Nutrient Use and Cycling

IPNI Working Group #1

Agricultural sustainability requires responsible nutrient management. Considering this important aspect, the primary goal of the Nutrient Use and Cycling working group is to develop and gather information related to nutrient imbalances and use. Our efforts consider the application of nutrient sources, nutrient removal by crops and losses from fields, soil nutrient levels, and impacts of ongoing or anticipated changes in cropping intensity.

As a way forward, our working group is specifically focused on the development and support of nutrient use decision support tools and publications. Examples of these efforts are listed below.

1. Crop-Specific Field Nutrient Balance Calculator for Brazil
      A web-based system for calculating nutrient balances with fields for a single crop or cropping system. Future plans involve the expansion of the calculator into a multi-lingual, regionally-based calculator.

2. Crop Nutrient Removal App and Online Calculator (PlantCalc)
      The calculator estimates crop nutrient removal of N, P, K, and S for a broad, and continually expanding list of field crops. The calculator is uniquely multilingual—providing full access in six languages including English, French, Spanish, Portuguese, Russian, and Chinese (Mandarin).

3. Nutrient Use Geographic Information System (NuGIS) 4. Global Nutrient Uptake and Removal Database
      Currently in development phase, this database is intended to improve the accuracy of nutrient uptake and removal estimates, which are becoming increasingly important in the refinement of nutrient management at farm or field levels as well as in nutrient balance calculations and models at larger scales.

5. Nutrient Use, Performance and Agronomic Gap System (NuGAPs)
    Currently in development, this system will be a focused source of estimates of Fertilizer Use by Crop, Yield Gap, Fertilizer Gap, and Nutrient Performance data.

6. Crop Nutrient Deficiency Symptoms Image Collection
      Provides a comprehensive assortment of hundreds of classic cases of crop nutrient deficiency documented from research plots and farm fields located around the world. A multilingual product—providing full access in six languages including English, French, Spanish, Portuguese, Russian, and Chinese (Mandarin).

7. Crop Nutrient Deficiency Photo Contest
    Our contest is an effort to encourage field observation and increase understanding of crop nutrient deficiencies. This is the 10th year for the contest. Entries are received
8. Nutri-Facts Series
    The full series is comprised of 17 individual pieces that correspond to nutrients categorized as essential, beneficial, or important to plants. By explaining how each nutrient plays a vital role in plant growth, these fact sheets help us all understand the importance of fertilizer and soil fertility management. The series is being adapted to an increasing number of regions and languages.
9. Crop-specific deficiency symptom e-books
    The first e-book of the series “Plant Nutrition Diagnostics” was released in April for Broccoli in Kindle and I-Book formats

10. “Importance of Lios” video
11. A Guide to Identifying and Managing Nutrient Deficiencies in Cereal Crops

12. Nutrient Stewardship Calendar
      Yearly produced six page calendar with different focus areas
      • Crop specific and nutrient specific deficiency symptom
      • Role of different Nutrients in plant nutrition

WG-01 Members
  • Sudarshan Dutta (co-chair) Deputy Director, South Asia Program, Kolkata, India
  • Gavin Sulewski (co-chair), Editor, Peachtree Corners, GA, USA
  • Eros Francisco, Deputy Director, Brazil Program, Rondonopolis, Brazil
  • Brian Green, IT Manager, Peachtree Corners, GA, USA
  • Svetlana Ivanova, Vice President, Eastern Europe & Central Asia, Moscow, Russia
  • Shutian Li, Deputy Director, China Program, Beijing, China
  • Rob Mikkelsen, Vice President, Communications, Merced, CA, USA
  • Scott Murrell, Director, North America Program, West Lafayette, IN, USA
  • Shea Shirley, Communications Agronomist, Saskatoon, SK, Canada
  • Armando Tasistro, Director, Mexico & Central America Program, Peachtree Corners, GA, USA
  • Shamie Zingore, Director, Sub-Saharan Africa Program, Nairobi, Kenya

Gavin Sulewski discussing WG01.