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Potassium (K)

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2017 Indiana CCA Conference

Dr. Murrell will be giving the presentation, "Crops Access More Potassium Than Is in a Soil Test."

Access to Critical Soil Test Values Makes Better Fertilizer Decisions

An important first step in determining fertilizer strategies is soil testing. The critical value for a soil test indicates the likelihood of a crop response to an added nutrient but often these values ...

Access to Critical Soil Test Values Makes Better Fertilizer Decisions

An important first step in determining fertilizer strategies is soil testing. The critical value for a soil test indicates the likelihood of a crop response to an added nutrient but often these values ...

Potassium responses in beans, canola and wheat

An experiment at Glenthompson, 2017

Documenting the Need for Potassium in Uruguay

Agriculture in Uruguay initially developed in high potassium (K) soils, under conventional tillage and crop rotations that required no K fertilizer. The scenario changed during the last decades driven ...

Documenting the Need for Potassium in Uruguay

Agriculture in Uruguay initially developed in high potassium (K) soils, under conventional tillage and crop rotations that required no K fertilizer. The scenario changed during the last decades driven ...

钾需要更多关注!

我们都知道,植物需要14种必需矿质养分的正确组合来维持它们的正常生长。但是,通常好像仅有几种元素得到了关注,要么因为其价格,要么因为其对环境的影响 钾是每一项农业经营成功的关键组分,但却总是被忽略。钾素前沿科学大会召开在即,与会科学家们将会深入探讨钾在土壤和植物中的行为,以及如何改善高素管理(www. Kfrontiers.

北美洲土壤的钾素肥力

2016年初,国际植物营养研究所发布了北美洲第四次土壤检测总结报告。之前的总结报告分别是在2001年、2005年和2010年发布的。2015年的报告包括了730万份土壤样本的含钾量。这份报告是62家私立和公立土壤分析测试实验室通过自愿参与和慷慨奉献而形成的。想了解参与工作实验室的详尽名单,参见soiltest. ipni. net/about/Labs. 2012年美国钾肥利用率(移走量/施用量) ...

Potassium

Potassium (K) is an essential plant macronutrient taken up in large quantities, like nitrogen. In plants, K does not become part of complex organic molecules. It moves as a free ion and performs many ...

Nutrient Expert for improved fertilizer recommendations for maize in sub Saharan Africa

The Nutrient Expert (NE) decision support tool has been successfully adapted for use in developing fertilizer recommendations that address wide diversity of soil and climatic conditions in Ethiopia, N ...

良好的营养是植物健康的关键

Rob Mikkelsen著, 谢玲 译 涂仕华 校 想要获得作物高产,良好的开端是关键。在其作物生长的早期阶段,幼苗特别容易受到多种环境和生物胁迫的影响。为了使作物免受环境胁迫和病害困扰,从播种到收获都必须保证均衡营养。随着我们对植物健康前沿研究的不断深入和了解,植株营养和抗病性之间的关键联系也更加清晰可见。本文可提供以下一些例证: 钾 钾在植物很多人们熟o.

Potassium Deficiency Symptom Images

Here are some images featuring potassium deficiency in various crops.

Balanced Fertilization of Grain Crops in Egypt Can Double Yields

In Egypt, the application of mineral fertilizers is highly skewed towards nitrogen, which has led to the gradual depletion of other nutrients like phosphorus, potassium, and several micronutrients fol ...

钾肥,在狗牙根饲草生产中仍然很重要

Mike Stewart著, 谢玲 译 涂仕华 校 狗牙根是一种重要的多年生暖季牧草,用于全球热带、亚热带地区放牧和干(饲)草生产。在美国南部,估计有600多万英亩的狗牙根牧场或饲草种植。海岸狗牙根长得很高,美国南部有很多标准杂交狗牙根。不过,其他杂交品种,尤其是Tifton 85在近几年来也开始侵入了。 根据国际植物营养研究所的植物计算应用工具(PlantCalc app),每吨狗牙根消耗46l ...

Enhancing Indian Farmer Income with Balanced Nutrition of a Rice-Maize Rotation

It has become increasingly common for farmers to grow rice, followed by maize each year in their fields. This rice-maize cropping system provides an option for farmers to diversify and improve their i ...

Crop residue burning and the loss of nutrients from fertilizers

Fate of topdressed fertilizers when stubbles are burned.

Improved Fertilization Boosts Olive Production in Morocco

Olives are one of the most important fruit crops in Morocco. The country’s fruit production has nearly doubled in the last ten years. But this higher production is mainly due to increased tree plantin ...

Frontiers of Potassium Science Conference Website

O site da Conferência Internacional "Fronteiras do Potássio" já está disponível com informações e palestras.

IPNI na Frontiers of Potassium Science Conference

Dr. Luís Prochnow, diretor do IPNI Brasil, apresentou uma palestra intitulada Rates and Residual Effect of Potassium Fertilization in a Brazilian Oxisol na Conferência Frontiers of Potassium Science, ...

Potassium for fodder quality – 2016

Results of a field trial at Bessiebelle, Victoria

Potassium responses on wheat and canola at Glenthompson, 2016

Field work undertaken in association with Southern Farming Systems.

4R Nutrient Management For Canola

Youtube video available

Potassium removal and use in Australia

Presented at the K Frontiers workshop, Rome, Italy

Improving Yield and Profitability of Processing Tomatoes in Northwest China with Potassium

Tomatoes require a relatively large amount of potassium (K) for adequate growth. Recently, scientists have detected declining K concentrations for soils in the Xinjiang region, and this is thought to ...

Improving Yield and Profitability of Processing Tomatoes in Northwest China with Potassium

Tomatoes require a relatively large amount of potassium (K) for adequate growth. Recently, scientists have detected declining K concentrations for soils in the Xinjiang region, and this is thought to ...

Improving Coffee Crop Nutrition in Vietnam

The main objective of this project is to understand current crop nutrition practices in Coffee in Vietnam, with the aim to use the insights and develop based on them field trials that support and prom ...

Publication Development and Knowledge Sharing

This project engages scientific authors, consultants, service providers, and other partners to identify suitable collaborators for IPNI SEAP, and then establish partnerships that add value to research ...

Seed Project and Incubator Program

This is an incubator project that identifies and then tests new ideas for research and market development.

Effects of different potassium sources on yield, quality and net income of processing tomato

Case study Effects of different potassium sources on yield, quality and net income of processing tomato By Shihua Tu Processing tomato requires large quantity of K, more than N, to meet healthy growth ...

Overcoming Low Maize Yields with Lime and Potassium in Chiapas, Mexico

Soil acidity is a major constraint that limits maize productivity in the southern agricultural region of Chiapas, Mexico. The region’s dominant sandy soils are derived from granite in a lowland tropic ...

Overcoming Low Maize Yields with Lime and Potassium in Chiapas, Mexico

Soil acidity is a major constraint that limits maize productivity in the southern agricultural region of Chiapas, Mexico. The region’s dominant sandy soils are derived from granite in a lowland tropic ...

Frontiers of Potassium Conference - Crop Quality

Topic Highlight: Potassium and Crop Quality

The Overlooked Plant Nutrient?

It’s well understood that plants require the right combination of the 14 essential mineral nutrients to sustain their growth. However, it frequently seems like just a few of the nutrients get most of ...

不同钾肥品种对加工番茄产量、品质和效益的影响

4R养分管理案例3 - 不同钾肥品种对加工番茄产量、品质和效益的影响 加工番茄的正常生长和高产优质需要大量的钾素营养,对钾的需求量甚至超过氮。用于番茄生产的钾肥品种主要有硫酸钾、硝酸钾和氯化钾。在生产中,种植者大多选用硫酸钾或硝酸钾,因为他们害怕氯化钾中的氯离子会影响番茄生长和品质,特别是在干旱地区。Chapagain 等 (2003)的研究指出,在加工番茄 .

Frontiers of Potassium Conference - Human Health

Topic Highlight: Potassium and Human Health

3 Potassium deficiency symptoms

Potassium for pastures

Удобрения пролонгированного действия

Серия: Минеральные удобрения

Диаммонийфосфат (диаммофос)

Серия: Минеральные удобрения

Нитрофос и нитрофоска

Серия: Минеральные удобрения

Нитрат калия (калиевая селитра)

Серия: Минеральные удобрения

Тиосульфаты

Серия: Минеральные удобрения

Калимагнезия (лангбейнит)

Серия: Минеральные удобрения

Сульфат калия

Серия: Минеральные удобрения

Комплексные удобрения

Серия: Минеральные удобрения

Хлористый калий

Серия: Минеральные удобрения

1 Pasture and animal production

Potassium for pastures

Project Description - Updated nutrient response curves in the northern and southern regions of Australia

Soil testing is a key strategy in the efficient use of expensive fertilizer and other nutrient inputs, ensuring that the mix of nutrients applied match the fertility status and crop demand for the lik ...

0 Potassium for sheep and beef pastures

Sheep and Beef Australia and New Zealand

Pensando en Nutrientes y Fertilidad de Suelos para los próximos 30 años

Conmemoración de los 30 años de adopción del sistema de Siembra Directa en el Paraguay

Potassium research at Uruguay - Exploration of Responses to Potassium in Western Uruguay

Paper and presentation at the 2016 Soil Science Congress of Russia

Potassium

Potassium (K) is an essential plant macronutrient taken up in large quantities, like nitrogen. In plants, K does not become part of complex organic molecules. It moves as a free ion and performs many ...

科学家聚集一堂为改善作物钾素营养指明方向

Scott Murrell著, 谢玲 译 涂仕华 校 一个世界知名科学家小组相聚在夏威夷的科纳海滨,共同讨论作物钾素营养的未来。这次钾素科学前沿研讨会聚焦在钾肥和土壤钾对植物营养的贡献上,为解释和管理土壤钾素的时空变异提出了一系列对应策略。该小组受命确定一些现有土壤钾素评估或钾肥推荐中缺失或表征不充分的关键概念。 “该小组的重要发现之一是必须把重点放在研.

钾肥的来源与品种

Mike Stewart著, 谢玲 译 涂仕华 校 农业中的钾(K)通常泛称为钾碱。术语钾碱是来源于早期一种生产技术,那时K是用水过滤柴灰,滤液置于铁锅中经水分蒸发而得到。这种方法是依靠树木的根系从土壤中吸收矿物K,然后将树木砍下燃烧获取。得到的K是碳酸钾,它被用作肥料以及用于生产玻璃和肥皂等。有趣的是,美国授权的第一个专利是生产钾肥(1790)。在那个年代,收集 .

Симпозиум "Эффективность калийных удобрений в современных системах земледелия"

в рамках VII съезда Общества почвоведов им. В.В. Докучаева

IPNI em visita a campos de pesquisa no Estado do Piauí

Dr. Valter Casarin, Diretor-Adjunto do IPNI Brasil, visitou três regiões agrícolas importantes no estado do Piauí, onde são desenvolvidas pesquisas e campos demonstrativos, com a cultura de soja.

Results of 2015 HRZ Nutrition Experiments

Summary of responses from nutrient omission experiments.

Калийное состояние почв Уругвая: текущая ситуацияи прогнозы на будущее

M. Барбазан, К. Баутес, Л. Бьюкс, Ж.M. Бордоли, A. Калифра, Ж.Д. Кано, A. дель Пино, O. Эрнст, A. Гарсия, Ф. Гарсия, С. Маззилли и A. Квинке

Banana quality and yield affected by optimal rates and of ratios of nitrogen and potassium fertilizers in Guangdong

Differing from many other crops, banana is a crop that needs sufficiently higher amount of potassium (K) than nitrogen (N) to obtain best yield and quality. Besides fertilization rates, the ratio of K ...

Effects of K sources on yield and quality of Chinese cabbage in Chongqing

Both potassium chloride (KCl) and potassium sulfate (K2SO4) are commonly used in agricultural production. People used to apply KCl on grain and oil crops, but for vegetables, which fertilizer should b ...

Biomass production of forage grasses in response to nutrient use in Brazil

Brazil is an important beef producer and world exporter with a herd size of over 210 million heads that occupies 170 million hectares of pasture. National stocking rate is about only 1 head/ha in resp ...

IPNI Southeast Asia's International Publication Partnership on Oil Palm Nutrition

Our understanding of the importance of nutrients for sustainable oil palm production is incomplete. Extensive experimental work has been dedicated to understand yield response of oil palm to nutrients ...

Oil Palm Training Program

This project delivers training on the application of 4R principles in all stages of the oil palm production cycle from the initial nursery stage to the productive mature stage.

Potato response to potassium fertilizer combined with different P sources in Inner Mongolia, China

This project initiated in 2016 and mainly evaluate the effect of MOP and/or SOP combined with DAP and new compound fertilizer containing N, P S and Zn on potato yield and farmer's income.

Scaling of Maize Fertilizer Recommendations Philippines

The project provides a model for scaling 4Rs in maize through the use of Nutrient Expert Maize recommendations by members of smallholder cooperatives, by building capacity of farmer leaders and market ...

STUDY OF DOSES OF POTASSIC FERTILIZATION IN OPENING SOILS IN THE STATE OF PIAUÍ

Considering the increasing adoption of reduction of potassium fertilization as a practice to reduce the cost of production, the present work aims to evaluate the factors that influence the dose of pot ...

Updated nutrient response curves in the northern and southern regions of Australia

The development of the Better Fertilizer Decisions for Crops database has identified gaps in the current region, nutrient and crop combinations. This project will generate data for the dominant crops ...

Promotion du concept du 4R par IPNI Afrique du Nord dans les zones céréalières du Maroc

Dans le cadre du projet Agrium et en ouverture de la campagne agricole 2015-2016 IPNI Afrique du Nord a organisé des journées de sensibilisation et d'information au profit des agriculteurs des zones c ...

关于召开化肥零增长下养分高效利用国际学术研讨会 会议通知

关于召开化肥零增长下养分高效利用国际学术研讨会会议三轮通知 各有关单位、各位专家、学者: 2015年农业部制订了《到2020年化肥使用量零增长行动方案》,提出力争到2020年主要农作物化肥使用量实现零增长。为凝练当前化肥减施中的重大科学需求、借鉴发达国家化肥减施中的成功经验,以及交流肥料高效利用中的最新进展,中国植物营养与肥料学会化学肥料专业委员会 .

钾肥用量和施用时期对苹果产量品质和果园钾素平衡的影响

在辽宁盖州、山东栖霞、陕西凤翔开展田间试验研究氯化钾( KCl ) 用量和施钾时期对苹果产量、品质的影响,并与硫酸钾( K2SO4 ) 比较。研究确定了苹果经济最佳KCl 用量和最高产量KCl 用量,钾肥的最佳施肥时期和施钾对苹果品质的影响。.

钾肥用量和施用时期对棉花产量品质和棉田钾素平衡的影响

研究钾肥用量和施用时期对棉花产量、纤维品质、钾肥利用率和棉田钾素平衡的影响,确定钾肥正确的用量和合适的施用时期,可为棉花主产区科学施肥提供依据.

我国马铃薯的4R 养分管理措施

马铃薯是继水稻、小麦和玉米后第四位粮食作物。全球1/3的马铃薯来自发展中国家。我国是世界上最大的马铃薯生产国,2013年产量达到9594万吨,其中2/3产于6个省份,即内蒙古、甘肃、四川、贵州、云南和重庆。肥料用量低且不平衡是马铃薯产量低和品质差的主要原因之一,而且西南地区马铃薯种植区很大一部分在山区和高原地区,限制产量的因素复杂多样。土壤养分含量低r.

Timing of K fertilizer affects yield and quality of lettuce in Chongqing

Under optimal fertilizer rates, adjusting timing of K fertilization can achieve better yield and quality of lettuce.

北方棉花的4R 钾肥管理措施

棉花分布在全国25个省份,面积超过7500万亩,皮棉总产量达650万吨。北方棉区主要分布在新疆、河南、河北、山东,面积和产量占全国的2/3以上,使农民增收的主要经济作物之一。钾对棉花高产优质至关重要,但北方棉区施钾量不足。这篇文章着重阐述了棉花生产中按照正确的品种、正确的用量、正确的施肥时期和施肥方法的4R养分管理措施进行钾肥管理对棉花产量、品质和 .

新疆加工番茄生产中4R 钾肥管理措施

新疆是我国加工番茄主要生产和加工基地,番茄种植面积由2001年的33万亩,增加到2010年的140万亩,产量已达500万吨。新疆光照充足、昼夜温差大、湿度低等有利于加工番茄生长和干物质积累。加工番茄的正常生长需要大量的钾素营养,对钾的需求量超过氮。然而传统上认为在新疆灰漠土上钾充足,从而导致农民长期不施用钾肥,造成土壤钾素耗竭,土壤有效钾含量下降,从而.

西北地区向日葵4R 养分管理

向日葵是我国重要的油料作物之一,西北地区是主产区,面积占全国的72%以上,超过1000万亩。在向日葵施肥上农民主要施用有机肥配合施用N、P肥,尤其磷肥过量施用比较普遍,而施钾肥的农户只有不足10%。即使施钾地区钾肥的用量不足向日葵需求量的30%。因此,钾肥的合理施用是提高向日葵产量和品质的主要措施之一。本研究总结现有的研究成果,根据4R养分管理原则提出 .

中国西北地区马铃薯钾肥管理

Potassium management in potato production in Northwest regionof China

Los 4 Requisitos del Manejo Responsable de Fósforo y Potasio

Presentación realizada en el Simposio Internacional manejo Sostenible de Suelos organizado por CIAT y el Gobierno de Santa Cruz en Santa Cruz de la Sierra (Bolivia) el 27 de Julio de 2015.

Potassium for quality hay

K test strips on pastures

K responses on the Southern Tablelands

Research trials with NSW DPI

Project Description - Potassium responses in winter crops and pastures

Following the market development work in Queensland over the past few years, there are several areas that are proposed for attention during 2015. Monitoring of the Queensland sites will be continued w ...

Background to Omission Trials

Summary of HRZ omission trials treatments and seasonal conditions

K experiment at Lake Bolac

Windrows indicate marginal K status

Desafíos para el manejo sustentable de los nutrientes en sistemas de producción de soja en el Cono Sur

Presentación realizada en el Congreso Mercosoja 2015 organizada por EMBRAPA en Florianopolis (Brasil), 22-25 de Junio de 2015.

Producción de granos y adopción de tecnología en Argentina

Ing. Agr. Juan Martin Brihet – Bolsa de Cereales de Buenos Aires.

广东省基本情况简介

广东省地处北纬20°13′-25°31′,东经109°41′-117°20′之间,北回归线横贯本省。全省陆地面积17. 98万平方千米,约占全国总面积的1. 87%,其中宜农地434万公顷,宜林地1100万公顷,是中国国内人多地少的省份之一。2011年作物播种面积581. 7万公顷。广东省民族众多,除以汉族为主外,还有壮、瑶、回等52个民族,2014年常住人口为1.

重庆市基本情况简介

重庆市位于长江与嘉陵江汇合处,1997年设立直辖市,是长江上游最大的经济中心。全市幅员82403平方千米。截至2014年末,重庆市常住人口2991. 40万人, 年末户籍总人口3375. 20万人, 其中农业人口2003. 08万人,非农业人口1372. 12万人,城镇化率59. 6%。年平均气温16℃~18℃,大部分地区年平均降雨量1000㎜~1350㎜,无霜期325d~345d。森林覆盖率23 ...

农作物4R养分管理视频

根据多年研究结果,国际植物营养研究所(IPNI)中国项目制作了一系列8-10分钟的农作物4R养分管理视频资料,包括苹果、棉花、马铃薯、加工番茄等,向广大农业技术推广人员和农户介绍主要作物施肥中正确的肥料品种、正确的施肥量、正确的施肥时期和正确的施肥方法的4R养分管理策略。可免费向IPNI北京办事处索取。 IPNI北京办事处:北京中关村南大街12号,中国农科院旧主楼628 .

Frontiers in Potassium Science: Developing a Roadmap to Advance the Science of Potassium Soil Fertility Evaluation

During the past few decades, the move toward site-specific nutrient management has created a demand for greater accuracy and precision in soil potassium (K) evaluation. In many areas, the desired accu ...

Potassium deficiency in rice induced early heading

In a long-term field experiment with rice-wheat rotations conducted in Guanghan city, Sichuan province of China, it is of interest to observe that the K omission plot has headed about one week earlier ...

加工番茄的4R钾肥管理

新疆是我国加工番茄主要生产和加工基地,番茄种植面积由2001年的33万亩,增加到2010年的140万亩,产量已达500万吨。新疆光照充足、昼夜温差大、湿度低等有利于加工番茄生长和干物质积累。加工番茄的正常生长需要大量的钾素营养,对钾的需求量超过氮。然而传统上认为在新疆灰漠土上钾充足,从而导致农民长期不施用钾肥,造成土壤钾素耗竭,土壤有效钾含量下降,从而.

棉花的4R钾肥管理

棉花分布在全国25个省份,面积超过7500万亩,皮棉总产量达650万吨。北方棉区主要分布在新疆、河南、河北、山东,面积和产量占全国的2/3以上,使农民增收的主要经济作物之一。对棉花高产优质至关重要,但北方棉区施钾量不足。这篇文章着重阐述了棉花生产中按照正确的品种、正确的用量、正确的施肥时期和施肥方法的4R养分管理措施进行钾肥管理对棉花产量、品质和经 .

向日葵的4R养分管理

向日葵是我国重要的油料作物之一,西北地区是主产区,面积占全国的72%以上,超过1000万亩。在向日葵施肥上农民主要施用有机肥配合施用N、P肥,尤其磷肥过量施用比较普遍,而施钾肥的农户只有不足10%。即使施钾地区钾肥的用量不足向日葵需求量的30%。因此,钾肥的合理施用是提高向日葵产量和品质的主要措施之一。本研究总结现有的研究成果,根据4R养分管理原则提出 .

马铃薯的4R养分管理

马铃薯是继水稻、小麦和玉米后第四位粮食作物。全球1/3的马铃薯来自发展中国家。我国是世界上最大的马铃薯生产国,2013年产量达到9594万吨,其中2/3产于6个省份,即内蒙古、甘肃、四川、贵州、云南和重庆。肥料用量低且不平衡是马铃薯产量低和品质差的主要原因之一,而且西南地区马铃薯种植区很大一部分在山区和高原地区,限制产量的因素复杂多样。土壤养分含量低 .

缺钾诱导水稻提前抽穗

在成都平原的一个水稻-小麦轮作长期定位试验中,出现一个非常有趣的现象,即缺钾小区水稻会提前一个星期抽穗(右边抽穗的小区为缺钾处理)。这一现象从定位试验开始后3年后连年出现。该小区的稻谷产量比最佳处理减产8-16%,但在生长季节水稻植株一般没有明显的缺钾症状。在冬季的小麦上,缺钾小区小麦籽粒减产9-37%,但始终没有观察到小麦提前抽穗的现象。该试验.

集约化农田节肥增效理论与实践

本书主要以东北、华北、长江中下游为研究区域,选择玉米、小麦、水稻、蔬菜等作物为研究对象。重点阐述了肥际-根际养分转化与调控、作物养分吸收 转运与高效利用、有机无机肥料以及环境要素协同效应与机理、农田养分时空变异特征与调控、典型区域养分循环特征与节肥增效途径与模式,以及我国养分资 源高效利用的战略与对策。通过以上研究提出作物持续高产和 .

High rainfall zone nutrient omission trials 2015

Part of the GRDC project DAV00141 led by P Riffkin

Région de Chaouia: IPNI organise une grande journée de sensibilisation sur le principe du 4R pour une bonne gestion de la fertilisation du blé

Plus de 120 participants ont répondu presents à la journée de sensibilisation sur le concept du 4R pour la bonne gestion de la nutrition minérale du blé organisée par le programme IPNI Afrique du Nord ...

2014 Annual Report - Wheat and Lupin Potassium Responses

Investigation of TBK as a soil test to predict K response. The K response experiment near Lake Bolac was selected as an opportunity to take further measurements of TBK in order to better understand th ...

K response in wheat

Results from Chelmsford experiment.

NuGIS: Nutrient Use Geographic Information System

The Nutrient Use Geographic Information System (NuGIS) integrates multiple tabular and spatial datasets to create county-level estimates of nutrients applied to the soil in fertilizer and livestock ma ...

Advancing Intensive Management of Corn Systems in Minnesota (Irrigated)

This project is focused on high-yield continuous corn systems - Irrigated.

Best management practice of potassium for sunflower (Helianthus annuus, L.) in Northwest China

The objectives of the project are to: 1)To determine the critical level of soil K for sunflower production; 2)To study the influence of K source and time of application on sunflower seed yield and qua ...

Better nutrient management strategy for rice-wheat, rice-rapeseed and rice-rice cropping systems

Rice-upland crop rotation is one of the most important cropping systems in China. To increase fertilization efficiency in these rotations, improve farmland soil fertility and reduce the risk of non-po ...

Evaluation of Cotton Yield, Quality, and Plant Growth Response to Soil-Applied Potassium

The frequency and severity of potassium (K) deficiency symptoms in cotton have increased in some soils in the US Cotton Belt over the past decade or so. Insufficient levels plant available K in these ...

Nutrient performance indicators for the Australian grains industry

This project aims to develop and test a process to measure and report the nutrient use benchmarks partial nutrient balance (PNB) and partial factor productivity (PFP) for N, P, K and S for grain produ ...

Optimization of Winter Wheat Nutrition

Response of winter wheat to foliar sprays with Potassium Nitrate is studied in field experiments conducted in drought-affected areas.

Study of variable nutrient responses in cotton grown in Vertisols of North-Eastern Karnataka

A study wan undertaken with the objective of To characterize and assess fertility status of soils in intensive cotton and soybean growing areas of North-Eastern region in Karnataka To study the respon ...

Yield maximization in cotton through targeted yield approach and omission plot techniques in Vertisols of Karnataka

A study was undertaken in the Bt cotton growing farmer fields of Raichur district with the following objectives 1. To know the effect of targeted yield approach on growth, yield and quality of Cotton ...

Soil potassium supply capacity and relation with cotton yield and fiber quality in main cotton areas in North China

In order to realize soil potassium status and supply capacity as well as their relation with cotton yield and quality in the main cotton areas in North China, surface soil (0-20 cm), cotton plant and ...

Les scientifiques de IPNI Afrique du Nord en tournée de sensibilisation sur la bonne gestion des éléments nutritifs pour la culture du blé

En préparation à la nouvelle campagne agricole 2014-2015, le bureau IPNI Afrique du Nord a organisé durant le mois d'octobre 2014 des journées de sensibilisation sur la bonne gestion des éléments nutr ...

Is Potassium Fertilizer Really Necessary?

Dr. T. Scott Murrell, IPNI Scientist, November, 2013

Results from Capella (wheat) and Gindee (chickpea) - 2013.

Response to residual K from bands applied in 2011

El potasio en la agricultura uruguaya

Experiencias en los últimos años

4R Nutrient Stewardship for Sunflower Crops in Northwest China

Nutrient imbalance following over- and under-application of some nutrients has restricted sunflower production in Northwest China. A review of research demonstrates how the 4R Nutrient Stewardship app ...

4R Nutrient Management Practices for Potato Production in China

In China, potato yields have been restricted by low and unbalanced nutrient input. A key measure to better tuber yield, quality, and improved nutrient use efficiency will be successful implementation ...

Effect of Different Fertilizer Treatments on eggplant Production in Hainan

Abstract: Due to high economic returns of vegetable production, overdosing fertilizers is quite common in the vegetable bases in China. Thus, the purpose of this study was to determine the optimal fer ...

Nutrient Expert gained the good field performance for rice

Dr. Ping He participated mid-term evaluation of 973 project held in Wuhan. Dr. Ping He was involved in Nutrient Expert based fertilizer recommendation in topic 5 that including Nutrient Expert wheat, ...

Second Atelier de formation sur l'outil ''Nutrient Expert'' Organisé par IPNI North Africa

Dans le cadre de ses activités en Afrique du Nord, le bureau regional de IPNI en Afrique du Nord a organisé le second atelier sur le modèle de prise de decision en fertilisation '' Nutrient Expert". C ...

Effect of Potassium Chloride Application for Rice, Cotton and Potato in the Irrigated Zone of Kazakhstan

By Abdulla Saparov, Rakhimzhan Eleshev, Beibut Suleimenov, Gennadi Peskovki and Alexey Shcherbakov

2013 Annual Report - Exploring Potassium Deficiencies in the Northern Pampas of Argentina

In the 2012/13 season, weather conditions were favorable for spring-summer crops, with rainfall exceeding the average while high temperature records that occurred in a few months, did not affect the c ...

Пир для царицы полей

В.В. Носов, О.А.Бирюкова, А.В.Купров, Д.В. Божков

Des plateformes d'essais pour la formation au champ au profit des agriculteurs et des agents de développement issus des principales régions céréalières du Maroc

Le 21 Avril 2013 IPNI North Africa a organisé une journée de formation au champs sur la fertilisation des céréales au profit des agriculteurs et des agents de développement des principales région céré ...

Better Fertilizer Decisions for Crops

Project summary and access to the data interrogator

Bases para el manejo 4R de la nutrición del cultivo de trigo

Presentación realizada en el Simposio Internacional IPNI Brasil-IPNI Cono Sur, Foz do Iguacu (Brasil), 20-21 de Mayo de 2014.

Potassium

Potassium (K) is an essential plant macronutrient taken up in large quantities, like nitrogen. In plants, K does not become part of complex organic molecules. It moves as a free ion and performs many ...

IPNI China Program 2013 Newsletter

IPNI China Program highlights in 2013......

Nutrient management for banana in China

Banana, one of the most important subtropical and tropical fruits, mainly grows in the provinces of Guangdong, Guangxi, Hainan, Fujian, Yunnan and Taiwan in China. Among the provinces, Guangdong has t ...

2013 Annual Interpretive Summary - Climate Change Mitigation and Adaptation through Conservation Agriculture and Precise Nutrient Management in Current and Future Cereal-based Cropping Systems of the Indo Gangetic Plains

Participatory trials in eight farmer fields in Haryana were conducted to assess the effect of nutrient and residue management on wheat yield, nutrient uptake and carbon sustainability index. Three res ...

The effect of K applied at different times to wheat, Western Australia

Responses on a sandy soil in pot and field experiments

IPNI au service des agriculteurs de la région de Chaouia au Maroc

Dans le cadre de ses activités au Maroc, IPNI représenté par son bureau d'Afrique du Nord a organisé conjointement avec l'INRA de Settat une journée au champs sur la bonne gestion de la fertilisation ...

2013 Annual Interpretive Summary - Improvement of Recommendations for Potash Fertilizer Use and Adjustment of Currently Used Soil Potassium Test Interpretation Classes in Intensive Cropping Systems

This 3-year project has a special focus on optimization of fertilizer K rates for crops with high response to K, such as sugar beet, grain maize, rape, and soybean.

2013 Annual Interpretive Summary - Wheat and Lupin Potassium Responses

The Better Fertilizer Decisions for Crops project identified gaps in the dataset for wheat and canola responses to K in eastern Australia. This project will support additional soil measurements of sel ...

Oil Palm Best Management Practices in Ghana

The oil palm sector in West Africa is developing extensively, yet plantation and small producers are performing well below their potential, with yields as low as one-third of the optimum. In order to ...

Do we need to revisit potassium?

Paper presented at the Adelaide GRDC Advisor Update

Assessing the indigenous nutrient supplying capacity of soils to Soybean in Vertisols of Northern Karnataka

A study was undertaken in the farmer fields growing soybean in Northern Karnataka with the following objectives 1. To assess the fertility status of soils in soybean growing areas of Northern Karnatak ...

Brazilian Nutrient Balance

Nutrient balance is a tool to evaluate the use of fertilizers. In order to have a sustainable crop production system it is necessary that the amount of nutrients removed from the field is replaced thr ...

Breaking Soybean Yield Barriers: Integrating Crop Production Practices & Comprehensive Fertilization Strategies – a Cropping System Approach

This project is studying the effects of different farming systems on soybean yield in major production regions of the Americas. The specific research objectives are to: 1) quantify soybean yields acro ...

Developing Multi-Variate Management Zones for Corn Production

This project intends to evaluate the benefit of multi-variate management zones and develop strategies which can account for the temporal and spacial variability seen in crop nutrient requirements.

Field validation of Nutrient Expert for early and late rice in China

Nutrient Expert Rice was developed to evaluate and validate fertilizer recommendation method based yield response and agronomic efficiency as compared with soil testing and farmer's practice

Field validation of Nutrient Expert for middle season rice in China

response and agronomic efficiency as compared with soil testing and farmer's practice

Field validation of Nutrient Expert for single season rice in China

Nutrient Expert Rice was developed to evaluate and validate fertilizer recommendation method based yield response and agronomic efficiency as compared with soil testing and farmer's practice

Field validation of Nutrient Expert Soybean in China

Nutrient Expert Soybean was developed to evaluate and validate fertilizer recommendation method based yield response and agronomic efficiency as compared with soil testing and farmer's practice

On- farm precision nutrient prescription under pre- dominant cereal- cereal systems using Nutrient Expert®

The project was initiated to optimize nutrient usage and maximize cereal – cereal systems productivity in various rice growing ecologies and geographies in India. The research project will compare yie ...

Optimising the yield and economic potential of high input cropping systems in the High Rainfall Zone

The High Rainfall Zone in southeastern Australia has high yield potentials for wheat and canola, but growers are faced with challenges about resource allocation in a relatively new and rapidly evolvin ...

Potassium responses in winter crops and pastures

In collaboration with NSW DPI and the GRDC, the response of wheat and barley (Warndoo 2015) and wheat, triticale and canola (Breadalbane 2015) are being investigated. Responses of wheat and canola to ...

Калийное состояние почв Украины и эффективность калийных удобрений

Христенко A.А., Иванова С.Е., Гладких Е.Ю., Истомина Ю.А.

Variability in Potassium Concentrations of Irrigation Waters in India

Potassium concentrations in irrigation waters varied greatly across different locations in India (spatial), different times of the year (temporal), and different sources of irrigation used.

Response to Potassium in the Rice-Wheat Cropping System of Red and Lateritic Soils

West Bengal soils, thought to be rich in K, showed a significant increase in grain yield of rice and wheat with K addition over the existing fertilisation practice.

Response of Groundnut to Balanced Fertilisation and Omission of Potassium

On-farm and on-station trials showed that balanced fertilisation (i. e. , applying the right rates of N, P, K, S, Zn, B, and Ca) helped in maximising groundnut yield, nutrient uptake, and farmer profi ...

Potassium, Sulphur and Zinc Application Improved Yield and Economics of Rice-Wheat Systems

On-farm experiments conducted at 60 locations in northern India demonstrated that yields and profits for rice and wheat increased significantly with a combined application of K, S and Zn along with fa ...

Potassium Response in Rice-Maize Systems

Emerging data from on-farm and on-station experiments in the rice-maize systems in India and Bangladesh have revealed very high system productivity and high responses of maize and rice to applied K.

Potassium Response and Fertiliser Application Economics in Oilseeds and Pulses in India

A review of the published literature showed variable K response in oilseeds and pulses across India. Economic calculations, using current prices of crop commodities and potash fertiliser, revealed sig ...

Potassium: A Key Nutrient for High Tuber Yield and Better Tuber Quality in Cassava

Potassium application led to increases in tuber yield, plant growth characteristics, tuber quality, K uptake and maintenance of available K in soil under cassava.

Mapping Potassium Budgets Across Different States of India

Potassium input-output balances in different states of India were estimated and mapped using the IPNI NuGIS approach. Results showed negative K balances in most of the states suggesting deficit K appl ...

Potassium nutrition in CQ Cropping Systems

Responses to applied K on wheat and chickpea

Potassium response curves - Wheat and Lupin Potassium Responses

The Better Fertilizer Decisions for Crops Project (BFDC) that concluded in 2012 identified several gaps in data around the development of robust soil test calibrations. This project seeks to collect c ...

Actualización en Fertilidad de Suelos y Fertilización de Cultivos

Presentaciones realizadas en los seminarios de Santa Rita y Minga Guazu (Paraguay) en Noviembre 2013.

Ensayos de la Campaña Verano 2012/13 del CREA Santa Cruz Este (Bolivia)

El grupo CREA Santa Cruz Este (Bolivia) ha establecido una red de ensayos de nutricion con el objetivo de determinar deficiencias y respuestas en los cultivos de la región y contribuir al desarrollo d ...

Rice field inspection activity in Hunan

Jointly with Mr. Wen Su & Ms. Dan Xiang, assistant managers from the Sinofert Hunan Branch and Mr. Yang Jiajun, director of the agricultural technology extension department from the Sinofert Hunan Bra ...

Simposio “Potasio en sistemas agrícolas de Uruguay”

Presentaciones del Simposio organizado por FAGRO (UdelaR), IPNI y Canpotex en Mercedes el 28 de Mayo de 2013

Generalized Nutrient Cycles

View and download some of the generalized nutrient cycles developed by IPNI.

Regional Nutrient Budgets for Australia.

Summary of a presentation made at the ANZ Soils Conference.

2012 Annual Interpretive Summary - Improvement of Recommendations for Potash Fertilizer Use and Adjustment of Currently Used Soil Potassium Test Interpretation Classes in Intensive Cropping Systems

During the last 15 years in Russia, both nutrient use (rates) and ratios have changed with a larger decline in the share of P and K fertilizers relative to N fertilizer. The adjustment of nutrient rat ...

Project Description - Improvement of Recommendations for Potash Fertilizer Use and Adjustment of Currently Used Soil Potassium Test Interpretation Classes in Intensive Cropping Systems

During the last 15 years in Russia, both nutrient rates and ratios were changed with a decline in the relative share of phosphate and potash fertilizers relative to N fertilizer. The adjustment of nut ...

Project Description - Assessment of Agronomic and Economic Benefits of Fertilizer Use in Maize Production Systems under Variable Farm Size, Climate and Soil Fertility Conditions in Eastern India

Background/Justification Eastern India is one of the most populous and intensively cultivated regions in the world. Farming in Eastern India is characterized by small landholders. Typically low resour ...

2012 Annual Interpretive Summary - Evaluation of the Potassium Status of Arable Soils in Ukraine on the Basis of Modern Soil Diagnostic Techniques and Development of Recommendations for the Rational and Efficient Application of Potassium Fertilizers.

The project aims to provide an accurate assessment of K status of arable soils, determine the demand for K fertilizers, establish the efficiency of K fertilizers in the soils of the main soil-climatic ...

Nutrient Uptake and Accumulation in Corn

Figures from Karlen et al. 1988. Agron. J. 80:232-242.

Assessment of Nutrient Contribution towards Yield of Bt Cotton through Omission Plot Techniques in Karnataka

The project was initiated to assess the yield responses to N, P and K fertilizer application in different Bt cotton growing farmer fields and also understand the extent of indigenous nutrient supplyin ...

Development and Validation of Nutrient Expert for Maize in Bangladesh

The project was initiated to develop and validate the Nutrient Expert for Maize, a site specific fertilizer recommendation tool for maize, in different maize growing areas of Bangladesh. The results f ...

Documenting Symptoms and Critical Values for Nutrient Deficiencies in Wine Grapes

Photographic images of nutrient deficiency symptoms were gathered for this project

Effects of AGARRE on the Response of Maize to Potassium in Villaflores

The objective of the study was to determine the influence of AGARRE—a commercial seed treatment whose proprietary composition contains micronutrients and hormones— in the response of maize to K suppli ...

Effects of Liming on the Response of Maize to Potassium in Jiquipilas

The objective of the study was to determine the influence of liming in the response of maize to K supplied by two sources and at four rates.

Response of Two Maize Cultivars to Potassium in Cintalapa

The objective of the study was to determine the response of an open pollinated variety and a hybrid to K supplied by two sources and at four rates.

Study and Application of Nutrient Management Expert System in a Summer Maize-Winter Wheat Rotation

IPNI China program is encouraging the use of crop nutrient management expert system in China, Since 2013, supported by IPNI China program, the project cooperators in the Soil and Fertilizer Institute, ...

Validation of fertilizer recommendations for soybean under high yielding crop production systems in Central and South of Russia

Fertilizer recommendations for soybean are developed and adjusted in field experiments conducted in Central and Southern Russia.

Wheat and Lupin Potassium Responses

Assessment of soil test and K responses for wheat and canola in southern Victoria.

Suelos y Fertilización: Taller 2012 de CONAPROLE

Presentacion realizada en el Taller de Actualizacion de CONAPROLE realizado en Soils (Canelones, Uruguay) el 29 de Noviembre de 2012.

Sintomas de deficiência de potássio

Potássio: Clorose nas pontas e margens das folhas mais velhas seguida por secamento, necrose ("queima") e dilaceração do tecido; colmos com internódios mais curtos; folhas mais novas podem mostrar clo ...

Folha com sintoma de deficiência de potássio

Potássio: A baixa disponibilidade de potássio sem o aparecimento visual da deficiência deste causa a “fome oculta”, ou seja, a redução na taxa de crescimento da planta com redução da produção de soja. ...

Deficiência de potássio

Imagem do Grupo Stoller, protegida por Lei Federal

Deficiência de potássio: menor crescimento da planta em geral e menor número de vagens

Potássio: Clorose marginal nos folíolos das folhas mais velhas, que evolue entre as nervuras. Manchas de tonalidade parda ou acinzentada, de tamanhos diversos, irregulares, em processo de necrose. Os ...

Deficiência de potássio: Clorose seguida de necrose das margens das folhas em E. pilularis

Potássio: Inicialmente as folhas velhas apresentam avermelhamento das bordas que progride em direção ao centro da folha.

Deficiência de potássio: à esquerda, fruto normal

Potássio: A clorofila começa a desaparecer em manchas na metade distal da folha; as manchas inicialmente amarelo-pálidas tornam-se bronzeadas à medida que se espalham e coalescem; as folhas podem se e ...

Deficiência em potássio: folhas mais velhas secas

Potássio: Bordas e pontas das folhas mostram clorose amarelo-alaranjada; lesões cloróticas localizadas entre as nervuras ao longo das margens e pontas das folhas; folhas mais velhas podem tornar-se to ...

Deficiência de potássio

Potássio: como nos dois casos anteriores, as folhas mais velhas são as primeiras a ser afetadas. Mostram um amarelecimento das pontas e margens, que depois secam e ficam com cor marrom ou preta. Os ra ...

Crop Yield and Soil Fertility as Influenced by Nutrient Management in Rainfed Inner Mongolia

Traditional nutrient management within the rainfed regions of Inner Mongolia usually results in poor crop productivity. In this study, six successive crop seasons found N, P, and K fertilizer to be re ...

Folhas de arroz com deficiência de potássio

Potássio: A deficiência de potássio na cultura de arroz não é tão comum como a de nitrogênio e a de fósforo. Entretanto, em solos muito arenosos, com baixa capacidade de retenção de potássio, poderá o ...

Response of potato to fertilizer application and nutrient use efficiency in Inner Mongolia

Inner Mongolia autonomous region (IMAR) is one of the major potato production area in China. The planted area of potato in IMAR is now about 760,000 ha and the total production is 9.55 million tons. T ...

Maize Response to Balanced Fertilizer Application in Northwest China

On-farm trials in NW China showed that the addition of potassium to N and P fertilizers used for maize resulted in an average increase of 1207 kg/ha more yield and USD 300/ha more income than the farm ...

4R Nutrient Management Practices for Potato Production in China

In China, potato yields have been restricted by low and unbalanced nutrient input. A key measure to better tuber yield, quality, and improved nutrient use efficiency will be successful implementation ...

Detalhe do bronzeamento da fome de potássio

Potássio: A conhecida "fome de potássio" inicia-se durante a frutificação das plantas, freqüentemente em manchas isoladas da lavoura. Nas folhas do "baixeiro"surge uma clorose entre as nervuras, que e ...

Agronomic Evaluation of Nutrient Management for Potato in Northwest China

This article summarized the effect of balanced fertilization on potato yield, nutirent limiting factors and nutrient use efficiency in China Northwest

The importance of K in crop yield and nutrient use efficiency

Farmers usually apply more P than K in crop production, most probably because of an assumed lower availability of P in soils and a lack of demonstrated K deficiencies. Attention must be paid to nutrie ...

Potassium Role and Benefits in Improving Nutrient Management for Food Production, Quality and Reduced Environmental Damages

Proceedings of the IPI-OUAT-IPNI International Symposium. Bhubaneswar, Orissa, India, 5-7 November 2009. Volume I: Invited Papers This publication, which is a result of the IPI-OUAT-IPNI International ...

Mejores Prácticas de Manejo de la Nutrición para una Agricultura Sustentable (Best management practices for crp nutrition in a sustainable agriculture)

Presentacion realizada en las jornadas de capacitacion de ASP en 9 de Julio, Bolivar, y Venado Tuerto en Junio de 2012.

Mejores prácticas de manejo de la nutrición de trigo-cebada/soja

Presentacion realizada en las joranadas regionales de ASP en Junin y Lincoln (Buenos Aires) el 8 y 9 de Mayo de 2012.

Seminario Fertilidad FAGRO 2012

Presentaciones del seminario organizado por la Facultad de Agronomia (UdelaR) en Montevideo el 25 de Abril de 2012.

Potassium Nitrate

NSS-11 Potassium Nitrate - Potassium nitrate (KNO3) is a soluble source of two major essential plant nutrients. It is commonly used as a fertilizer for high-value crops that benefit from nitrate (NO3- ...

Potassium Magnesium Sulfate (Langbeinite)

NSS-6 Potassium Magnesium Sulfate (Langbeinite) - Langbeinite is a unique source of plant nutrition since three essential nutrients are naturally combined into one mineral. It provides a readily avail ...

Potassium Sulfate

NSS-5 Potassium Sulfate - Potassium fertilizer is commonly added to improve the yield and quality of plants growing in soils that are lacking an adequate supply of this essential nutrient. Most fertil ...

Potassium Chloride

NSS-3 Potassium Chloride - Potassium fertilizers are commonly used to overcome plant deficiencies. Where soils cannot supply the amount of K required by crops, it is necessary to supplement this essen ...

Project Description - Improvement of Maize and Soybean (Chickpea) Mineral Nutrition on a Calcareous Common Chernozem

The Global Maize project was initiated in 2011 in Rostov Oblast, Southern Russia, on a common chernozem. Maize-soybean crop rotation was studied at the A-site in 2011-2014 and since 2015 it was change ...

2011 Annual Interpretive Summary - Nutrient Management and Optimized Fertilization on Wheat and Maize in Henan Province

Nutrient Expert-based Fertilizer Recommendation for Winter Wheat and Spring Maize in Henan, 2011. This study was conducted to validate Nutrient Expert (NE)-based fertilizer recommendations for winter ...

Finding Trends in Soil Test Data

The following materials are provided to help farmers and crop advisers use Microsoft Excel to examine soil test data over time to assess how a fertilization program changes soil test levels. The manua ...

Assessment of Agronomic and Economic Benefits of Fertilizer Use in Maize Production Systems under Variable Farm Size, Climate and Soil Fertility Conditions in Eastern India

Farming in Eastern India is characterized by small landholders. Typically low resource availability to the farmers and low profitability from cereal farming necessitates that inputs, including fertili ...

Improvement of Recommendations for Potash Fertilizer Use and Adjustment of Currently Used Soil Potassium Test Interpretation Classes in Intensive Cropping Systems

The project has the following goals: a) determine optimal potash fertilizer rates for major crops in crop rotation that have a high demand for potassium, b) evaluate the validity of currently used soi ...

Improvement of Winter Wheat Mineral Nutrition on Calcareous Common Chernozems

A one-season demonstration experiment in winter wheat grown after sunflower is conducted on farmer’s field. Recommended nutrient management is compared with farmer fertilizer practice. The variability ...

Nutrient Balance Assessments in Crop Production

IPNI sees on-going assessment of nutrient balance and nutrient use efficiency in crop production as one of its responsibilities. This page lists materials and/or tools developed by IPNI on assessments ...

Dinámica de los Macro y Micronutrientes, en los suelos de Santa Cruz y requerimientos de los cultivos de soya, trigo y maíz

Presentacion realizada en la Jornada de Capacitación Internacional “Manejo Sostenible de los Suelos Productivos de Santa Cruz” organizada por ANAPO, MDRT y Fo-Ar en Santa Cruz de la Sierra (Bolivia) e ...

Характер транслокации калия и кальция в растенийях

Зялалов А.А., Сибгатуллина М.Ш., Бариева А.И., Плеханова В.А. 2010. Агрохимия, 1: 27-32.

Роль элементов питания в повышении урожайности яровой пшеницы в Сибири

Рассматривается значение минеральных удобрений и других средств химизации для получения высоких и устойчивых урожаев яровой пшеницы – основной полевой культуры в Сибири. Достижимая урожайность этой ку ...

Project Description - Exploring Potassium Deficiencies in the Northern Pampas of Argentina

Brief background to the problem: In Argentina, the area cropped to soybean increased from 9 to 18 million ha and the production from 20 to 52 million t in the last 10 years. Despite of the large adopt ...

Mejores Prácticas de Manejo de la Nutrición - Agua, Bases y Micronutrientes

Presentación en el Taller organizado por ASP en San Antonio de Areco el 7 de julio de 2011.

Panel 5

Nutrición y Enfermedades

Mejores Prácticas de Manejo de la Nutrición de Trigo/Soja - Novedades en Bases y Micronutrientes

Presentación realizada en Marcos Juárez (Córdoba) el 3 de Mayo de 2011.

Project Description - Evaluation of the Potassium Status of Arable Soils in Ukraine on the Basis of Modern Soil Diagnostic Techniques and Development of Recommendations for the Rational and Efficient Application of Potassium Fertilizers.

R&D TARGET SPECIFICATION Evaluation of the potassium status of Ukrainian soils on the basis of modern soil diagnostic techniques and development recommendations for the rational and efficient applicat ...

Research Highlight - Southwestern China

Research to control soil erosion, nutrient losses, and maintain crop yields through optimal surface mulching and cultivation on intensely sloped farmlands

Webinar on Soil Test Levels in North America - 2010 Summary Update

Dr. Paul E. Fixen, Senior Vice President and Director of Research at IPNI, will present the highlightsof the recently released summary which compiled the results of approximately 4.4 million soil test ...

Improvement of Maize and Soybean (Chickpea) Mineral Nutrition on a Calcareous Common Chernozem

Ecological Intensification is compared with grower fertilizer practice in maize–soybean (chickpea since 2015) crop rotation at the A-site. Crop response to N is studied in both systems too. Actual asp ...

Research Highlight - Brazil

A Current Issue: Sustainable Production Systems under No-Till in the Cerrado

IPNI Research Projects - 2010

IPNI Research Project Summaries - 2010 This past year we provided financial and in-kind support to over 100 projects around the world. Our scientists work closely with the researchers and cooperators ...

Potassium Fertilizer Production and Technology

The production, marketing, and application of potassium (K) fertilizers (potash) are essential for maintaining global food supplies. The new IPNI presentation on the potash fertilizer industry describ ...

Mejores Prácticas de Manejo de la Fertilización - Potasio

Presentación realizada el 22 de Julio de 2010 en la Jornada de Actualización "Potasio en Uruguay: ¿Un problema real?", organizada por la Facultad de Agronomia (UdelaR) y la Union Rural de Flores, Trin ...

IPNI Introduces "Nutrient Source Specifics" Series

IPNI INTRODUCES “NUTRIENT SOURCE SPECIFICS” SERIES June 1, 2010—Norcross, Georgia, USA—The International Plant Nutrition Institute (IPNI) is introducing a new series of one-page, condensed fact sheets ...

Effect of Long-term Potassium Application on Rice Yield and Potassium Supply Capacity of Paddy Soil in Hunan

Available soil K in arable lands within the middle reaches of the Yangtze River region, especially in Hunan Province, has decreased since the 1970s because of large areas of super-hybrid rice planting ...

2009 Crop Nutrient Deficiency Photo Contest Winners

. Results of 2009 Crop Nutrient Deficiency Photo Contest

2010 Crop Nutrient Deficiency Photo Contest Winners

IPNI has announced the winners of the 2010 Crop Nutrient Deficiency Photo Contest. This year’s group of entrants was indeed global in scope and our judges were provided with a very diverse collection ...

The Crop Nutrition Network in the CREA Region of Southern Santa Fe, Argentina

The Regional Consortium of Agricultural Experimentation (CREA), a farmer organization based in Southern Santa Fe, has collaborated with IPNI to establish a network of field experiments

Site-Specific Nutrient Management of Wheat in Eastern India

The main objective of this study was to evaluate the site-specific nutrient management (SSNM) in wheat in eastern India.

Assessment of Soil Potassium Supplying Capacity from Soil Nutrient Reserves and Dissemination of Nutrient Management Technologies through Nutrient Manager

Information generated from this project would help develop soil based coefficients on allowable draw down of soil K reserves, which can be used with Nutrient Manager for rice and maize in the determin ...

Effect of rate and timing of K on three crops

A glasshouse experiment comparing the rate and time of K application on wheat, canola and lupins.

Grain mineral contents under elevated carbon dioxide

How will elevated carbon dioxide affect wheat grain macro and micro nutrient concentrations and grain functional properties.

Improving nutrient use efficiency and profitability in rainfed production systems

Prevalence of yield gaps, multiple nutrient deficiencies and low nutrient use efficiencies in rainfed region helped in initiating this project. The project was aimed at establishing strategies for imp ...

Nutrient Balances for Australian Natural Resource Management Zones

Estimating nutrient inputs and removals in Australian agricultural regions.

Nutrient Demand of Oil Palm Hybrids in Tropical America

Nowadays there are several oil palm regions in Latin America with plantings of the OxG material, which is a cross of Elaeis oleifera (American oil palm) with E. guineensis (African oil palm). There ar ...

Nutrient Expert Development and Assessment

This project aims to (1) develop, test, and refine new versions of Nutrient Expert (NE) for new crops and new geographies in Asia and Africa, (2) conduct field trials and build agronomic database for ...

Nutrient omission plots in spring wheat in Russia: Omsk Oblast and Republic of Bashkortostan

One-season nutrient (N, P, K) omission plots were conducted on leached chernozems in agricultural enterprises' fields. Fertilizer rates were calculated for the expected grain yield of 3 t/ha based on ...

Nutrition of Hybrid Willows for Bio-fuel Production

Seven different clones of willow grown as a potential bio-fuel crop were evaluated in their response to irrigation and N, P, K and S fertilization. After three growing seasons, prior to harvesting the ...

Study on Nutrient Management Technology for Vegetables in Wuhan

Over fertilization for vegetable in Wuhan is very serious problem. Therefore, supported by IPNI China program, the project cooperators in Wuhan Academy of Agricultural Science carried out this researc ...

The Response of Crops to Potassium Placement Depth and Band Spacing

The right place for K in summer dominant rainfall areas of northern Australia.

Tools for sustainable oil palm production. In situ fertilizer studies for plantations in Ecuador.

There is a large and unmet demand of local research in oil palm nutrition. With support of the national oil palm guild we are carrying out a fertilizer trial in Ecuador to find local reference values, ...

Effect of Potassium and Magnesium Sources on Coffee Yield and Fruit Quality in Brazil

Brazil has been the world’s largest producer and exporter of coffee for at least 150 years. However, average yields remain low at 900 kg/ha. Potassium fertilization is one of the main factors influenc ...

Effects of Potassium Fertilization of Soybean Grain Yield and Disease Incidence in Iowa

This project was conducted from 2005 until 2008 at five Iowa locations (20 site-years) to assess the effects of K fertilization and tillage on soybean grain yield and incidence of leaf/stem diseases. ...

Significant opportunities to increase maize production in the Philippines

First results from on-farm studies in seven regions indicate significant opportunities to increase maize production in the Philippines. Farmer fertilizer use was insufficient to achieve high, profitab ...

Possible Consequences of Cutting Back on K

Many growers across North America have faced tough choices on cutting back or even eliminating application of key nutrients, particularly K. Of course, the question of the impact of this decision on c ...

Panel 1

Las MPM de los nutrientes

Panel 4

Las MPM para los Cultivos y Sistemas de Producción

Resultados de la Red de Ensayos Exploratorios en NPKS y Micronutrientes de FUNDACRUZ en las Zonas Norte, Centro y Este

Presentación realizada en la jornada técnica organizada por Fundacruz el 17 de Marzo de 2009 en las instalaciones de ANAPO (Santa Cruz de la Sierra, Bolivia).

2008 Crop Nutrient Deficiency Photo Contest Winners

. Results of 2008 Crop Nutrient Deficiency Photo Contest

Fertilizer Best Management Practices - CIG Version

These publications are a series prepared by cooperators with the staff of the International Plant Nutrition Institute (IPNI). It is part of a project in cooperation with the Foundation for Agronomic R ...

FERTILIZER: AN INVESTMENT FOR 2009 CROPS

FERTILIZER: AN INVESTMENT FOR 2009 CROPS February 23, 2009-Norcross, Georgia, USA-Like baseball teams across the land, most farmers plan to go into the spring with hopes of the best season they've eve ...

Global Maize Project in China: Dahe, Shijiazhuang, Hebei Province

Project was initiated in 2009 from summer maize rotated with winter wheat to test how the performance of ecological intensification (EI) compares to that of current farmer practice (FP).

Global Maize Project in China: Liufangzi, Gongzhuling, Jilin Province

Project was initiated in 2009 to test how the performance of ecological intensification (EI) compares to that of current farmer practice (FP)

Nutrient Management and Optimized Fertilization on Wheat and Maize in Hebei Province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2010

Research in Herbosa Succession Process Based on Soil Fertility Evolution

Weed biodiversity is one of the indicators of farmland ecological environment and greatly affected by different fertilization patterns. This research program was to study weed community under differen ...

Balanced Fertilization on Cash Crops in Southwest China

Balanced fertilization on production of high-yield Baxi banana Application technologies of K, Mg and S for the first and second Baxi banana plant were studied. The vegetative growth, floral emergence, ...

IPI-OUAT-IPNI International Symposium on Potassium Role and Benefits in Improving Nutrient Management for Food Production, Quality and Reduced Environmental Damage

IPI-OUAT-IPNI International Symposium on Potassium Role and Benefits in Improving Nutrient Management for Food Production, Quality and Reduced Environmental Damage. November 5 -7, 2009, Orissa Univers ...

Fertilizer Best Management Practices (BMPs)

The concept of fertilizer best management practices (BMPs) is not new...it was first introduced almost 20 years ago. Fertilizer BMPs are more important today than ever before and need to be based on a ...

IPNI Staff Presentations at the 2008 ASA/SSSA/CSSA

Presentations made by IPNI stafff at the 2008 annual Tri-Societies meetings held in Houston, Texas, in October.

Seminario "Criterios para la fertilización con P y K en sistemas agrícolas" - Paysandú (Uruguay) - Julio 2008

Presentaciones realizadas en el Seminario "Criterios para la fertilización con P y K en sistemas agrícolas" realizado en Paysandú (Uruguay) el 24 de Julio de 2008.

2007 Crop Nutrient Deficiency Photo Contest Winners

Results of 2007 Crop Nutrient Deficiency Photo Contest On this page, we highlight winners for each of the four categories. The entries were judged on the overall quality of the image as well as the su ...

Organic Agriculture

Organic Agriculture This page contains a collection of references on organi ...

Global Maize Initiative

The Global Maize project is an interdisciplinary, international research effort with an overall objective of creating local, ecological intensification (EI) practices for maize production that increas ...

Status of Nutrient Use in India

Key articles outlining the issues surrounding the current state of nutrient use in Indian agriculture.

Potash for Indian Agriculture - Pamplet Series

This pamplet series features crop nutrition and management information plus deficiency images for a variety of crops. The pamplets are organized by state and are available for download.

Nitrogen focussed publications

This page has moved: http://npg. ipni.

The Fertility of North American Soils

This is a report of the phosphorus (P) and potassium (K) fertility of the soils of North America. The data used in this report were provided by 70 major North American public and private soil testing ...

Fertilizer Economics - Tools for Management

How can growers best react and handle the unexpected conditions arising from increased fertilizer prices?

Crop Nutrition PowerPoint Series

The Crop Nutrition Series of PowerPoint presentations features crop nutrition and management information prepared by IPNI North American Program scientific staff. Each presentation includes approximat ...

Exploration of Responses to Potassium in Western Uruguay

Several regions of Uruguay has recently shown K deficiencies and responses. This project looks to determine the different areas with K deficiency, evaluate responses in the main field crops, and provi ...

Some Things to Know About Potassium

Potassium (K) is everywhere in nature. It can be found in oceans and seas, in the soil, in rocks and minerals, and in plants and animals. It is essential to all forms of life…human, animal and plant. ...

Nutrient Management and Balanced Fertilization on Major Crops in Jilin Province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2011

Nutrient management and optimized fertilization on selected crops in Liaoning province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2011

Nutrient management and optimized fertilization on selected crops in Liaoning province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2011

Nutrient Management and Optimized Fertilization on Wheat and Maize in Henan Province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2010

Nutrient Management and Optimized Fertilization on Wheat and Maize in Henan Province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2010

Nutrient Management and Optimized Fertilization on Wheat and Maize in Shanxi Province

The project has been focusing on Nutrient Expert based fertilizer recommendation since 2010

Soil Nutrient Stratification in Long-term Sustainable Cropping Systems Research Study

A tillage by rotation study evaluated after 11 years to determine if the use of no-till had led to nutrient stratification in the plots. The results of this study indicate that nutrients did become st ...

Strategies for Improving the Crop Safety and Efficiency of Starter Fertilizer for Saskatchewan Crops

Crops were planted in flats of soil are prepared to simulate a seed-bed and a low-disturbance opener configuration (10% seed bed utilization). Eleven commonly grown Saskatchewan crops (wheat, barley, ...

The Effects of Potassium and Chloride Nutrition on Seed Yield of Canaryseed

The effects of potassium and chloride nutrition on seed yield of canary seed, was conducted to determine the responsiveness of canary seed to K and Cl- and provide better recommendations to producers ...

Dinámica de liberación y fijación de potasio en el suelo

Marta Elvira Conti Cátedra de Edafología - Facultad de Agronomía - Universidad de Buenos Aires Av. San Martin 4453 – (1017) Buenos Aires – Argentina conti@mail.agro.uba.ar

Evaluation of Long Term No-till Effects on Soil Fertility

The adoption of no-till seeding systems in western Canada has been driven by a variety of factors, moisture conservation and economic efficiency likely the major ones. This project was conducted to ev ...

Phosphorus, Potassium and Sulfur on Malt Barley

Determine the effect of phosphorus, potassium and sulfur on the yield and quality parameters of malt barley across the agro-ecological regions of Alberta.

Evaluation of Agronomic Practices and Quality Parameters of Timothy Hay

Determine how important maintenance fertilizer management is to maintain timothy stands and quality. Also whether additions of the micronutrient Cu are beneficial in maintenance of green color in timo ...

Optimizing Canola Production: Fertilization, Crop Protection and Genetic Yield Potential

Examine the individual and combined impact of three types of crop inputs: fertilization, crop protection and genetic potential for yield for canola (oil rapeseedl).

Project Description - Fertilizer Requirement of Irrigated Alfalfa

Surveys have indicated that there is a discrepancy between soil and tissue tests for P and K in many irrigated alfalfa fields in southern Alberta, and that insufficient P and K was being applied to th ...

Establishing a Plant Nutrition Network for the CREA Region in Southern Santa Fé

On-farm field experiments establish as a long-term network in 2000, to evaluate responses to N, P, and S in wheat, soybean, and maize in the southern Santa Fe and Southeastern Cordoba regions. Evoluti ...

Establishing a Plant Nutrition Network for the CREA Region in Southern Santa Fé

On-farm field experiments establish as a long-term network in 2000, to evaluate responses to N, P, and S in wheat, soybean, and maize in the southern Santa Fe and Southeastern Cordoba regions. Evoluti ...

Impact of Nitrogen, Phosphorus and Potassium Chloride Fertilizer Management on the Growth and Yield of Oats

Develop fertilizer management strategies which optimize fertilizer use efficiency for oats in the eastern sub-humid Prairie.

Impact of Production System and Nutrient Addition on Grain Quality in Long-term Rotation Studies in Western Canada

Assess crop rotation and nutrient application on flax yield and nutrient uptake.

Improving Forage Production and Longevity of Alfalfa Stands with Balanced Fertilization

To determine the influence of balanced fertilization on forage production, longevity of alfalfa stands, weed population and disease severity.

On-farm Evaluation of Potassium Chloride using Combine Yield Monitors

The addition of potassium (K) fertilizer to starter fertilizer blends is becoming a common practice in many areas of western Canada with high soil test K levels. Specific crops, such as malting barley ...

The Effect of Potassium and Sulfur on the Yield Variability of Canaryseed

Evaluate K and S additions on the yield and quality of Canary Seed production at five locations in Saskatchewan, Canada.

Field Crop Response to Potassium on Soils with High Extractable Potassium and Varying Soil Supply Rates of Potassium

Crop responses to K on many western Canadian soils, even on soils testing high in K, have many people questioning the soil testing procedures used and/or the method by which K varies within fields. Us ...

Landscape Management of Agronomic Processes for Site-specific Farming

The objective of this project is to measure and model landscape dynamics for a hummocky topography in the Black Soil Zone of east central Alberta. Then evaluate the potential benefit of variable rate ...

Management for Maximum Economic Yield of Open Pollinated and Hybrid Canola

This research was initiated to determine whether higher yielding hybrid rapeseed (canola) varieties require a higher level of management to express higher yields, compared to older open pollinated can ...

The Effects of Potassium Chloride to Counteract the Negative Effects of Side-banded Urea on Plant Establishment

A series of experiments to determine if adding KCl to side-banded urea would increase the safety to the seedlings against the toxic effects of side banded urea, regardless of the separation between th ...

Feeding the Plants that Feed the World

The developed resource is a science kit that includes hands-on experiments that show upper elementary and junior high school students how plants grow and their nutritional needs.

Fertility Management of Winter Wheat Grown after Alfalfa

Forage hay crops remove large amounts of nutrients from the soil, because of this, levels of available phosphorous, potassium and sulfur are often marginal for crops following forages.

Agronomic Aspects of Coated Potassium Chloride Fertilizers

Research investigating if polymer coated KCl will enhance the nutrient use efficiency of K and Cl, and reduce the damaging effect of higher rates of seed placed fertilizer.

Site-specific Management of Potatoes

This project is investigating the potential for site-specific management to improve yields of irrigated potatoes. Tissue concentrations of P and K can be quite variable.

The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-seeding Systems

Assess the impact of fertilizer placement on weeds in no-till seeding systems.

1995 Annual Interpretive Summary - Agronomic testing and introduction of potassium chloride in Pakistan

Potassium research studies conducted throughout the country in 1995 support previous results showing significant yield increases in major crops where soil available K levels are inadequate. Also, thes ...

Evaluation of seed placed fertilizer rates

Questions that now remain unanswered are urea impacts on calcareous soils and the role that ammonium sulphate might play in various mixes with urea and what the safe rates of combined N,P,K and S fert ...

Nutrient Requirements of Mixed Forages

This new project is attempting to demonstrate how balancing N and P, and harvesting methods can improve stand life and productivity.

The Availability of P and K Contained in Pea and Fababean Residue to a Subsequent Crop

Assess the availability, release and use of P and K from field pea and fababean residues, to subsequest cereal crops.

Maximizing Forage Productivity by Improving Effectiveness of P and K Fertilizers

Phosphorus fertilization is essential for good forage production. This study is showing how P fertilization affects dry matter yield and protein of alfalfa and bromegrass hay in central Alberta.

DRIS analysis of forage alfalfa silage, grain corn and greenhouse cucumbers

To evaluate the use of Diagnostic Recommendation Integrated System (DRIS) analysis on three high value crops - irrigated alfalfa, irrigated corn, and greenhouse cucumbers.

Influence of phosphorus fertilizer on the soil quality of a historic irrigated rotation

Determine the influence of historic phosphorus application on soil quality and nutrient supplying power in a low input irrigated crop rotation.

Nitrogen, phosphorus, and potassium fertility requirements for optimizing protein levels in malting barley

For optimum economic returns, fertilizer applications should be managed to apply sufficient N to attain the highest possible yield, without increasing protein content beyond the acceptable levels. For ...

Preliminary Evaluation of Point-injection for Application of P & K to Forage Grasses in Southern Alberta

Greenhouse study assessing the benefits of point-injection for improving P and K use by forage grass. Results will be used to design of future large-scale field experiments.

P and K fertilizer nutrients in forage crops

Only about 15% of the alfalfa grown in western Canada is fertilized annually, and generally with low rates of P. Therefore, P and K are often inadequate to produce the most economic yield. This projec ...

Interaction of drip-applied potassium with soil nutrients

Assess the effect of drip applied potassium (K) as it interacts with other nuitrients

Maximum yield canola production

Assess agronomic management requirements to achieve high yielding canola.

Influence of potassium chloride and polyphenols on the dynamics of the release of manganese from soils

Assess the effect of potassium chloride fertilization, and presence of polyphenols on the release of managanese from soils.

Investigation of Soybean Response to Potassium and Nitrogen Under High Yield Environments

Influence of tillage on soybean response to potassium, nitrogen, and micronutrient fertilization in high yield environments.

Nitrogen, sulfur and KCl management for wheat production in North Dakota

A research project investigating the N, S, K and Cl needs of wheat in North Dakota.