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NuGIS – A New Tool for Evaluating Nutrient Use and Balance in the U.S.A. For the last couple of years, IPNI has been working on a rigorous GIS-based model for assessing nutrient balance and balance trends in the U.S.A., termed NuGIS. This project is part of our responsibility for understanding the nutrient status of cropping systems and as a complement to our periodic inventorying of soil fertility levels in the U.S.A. By integrating multiple data layers to create county-level estimates of nutrient removal by crops, fertilizer applied, and manure nutrients, NuGIS offers a rather clear picture of “normal” nutrient use. Geospatial techniques are used to migrate the county data to watersheds which will allow NuGIS output to be compared to the output of water quality models. NuGIS is available as an IPNI Technical Bulletin in printed form that can be accessed at the IPNI website (please see link below). In the near future, you will also be able to access the balance data interactively via an on-line tool that allows panning from the entire country down to a few counties or watersheds. We will also be preparing additional more focused publications on the findings of this project in the months ahead. |
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 Nutrient Source Specifics Series Looking for brief information about the production, agricultural use, management practices, and chemical properties of common fertilizer materials? Read articles Better Crops with Plant Food Better Crops with Plant Food Issue No. 2 of 2010 Now Available Online The current issue of Better Crops with Plant Food (2010, No. 2) offers readers a smorgasbord of articles and announcements related to current plant nutrition topics. From North America there is a report on how potassium nutrition can suppress soybean aphids, a closer look at managing nitrogen for economic returns and greenhouse gas reductions in irrigated cropping systems, a discussion of liming requirements for nitrogen fertilizer-induced soil acidity, and more. An article from China research reviews characteristics of nutrient uptake by grape. From India comes a story on how zinc-enriched urea improves grain yield and quality of aromatic rice. Benefits of integrating crops and tropical pastures as systems of production are highlighted in a report from Brazil. An article from Australia examines lessons to be learned from long-term experiments established in 1916. Two articles are included on magnesium, sometimes considered a forgotten element. Other announcements include details of the 2010 edition of the IPNI nutrient deficiency photo contest, information on the Director of the new IPNI Africa program, and the selection of Dr. Ji-yun Jin as the laureate of the 2010 IFA Norman Borlaug Award. Read this Issue |
 Impact of Traditional and Enhanced Efficiency Phosphorus Fertilizers on Canola Emergence, Yield, Maturity, and Quality in Manitoba The objectives of this research are to: (1) determine the relative effects of traditional and enhanced efficiency fertilizers in terms of safe rates for seed-row placement, and effects on crop yield, crop maturity, and seed quality and (2) determine if canola cultivars differ in response to seed-placed P fertilizer. Read Full Story 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. The area of K-defi cient soil has expanded and K defi ciency has become a serous problem. Read Full Story |
 IPNI 2010 Edition of Nutrient Deficiency Photo Contest Now Accepting Entries Read Full Story June 30 is the Deadline for Scholar Award Each year, IPNI offers the Scholar Award to honor and encourage deserving graduate students in any country where an IPNI program exists. Read Full Story2010 IPNI Science Award The IPNI Science Award recognizes outstanding achievements in research, extension, or education which focus on efficient and effective management of plant nutrients and their positive interaction in fully integrated crop production that enhance yield potential. Read Full Story New Videos from IPNI Feature 4R Nutrient Stewardship Read Full Story |
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