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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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 Better Crops with Plant Food Better Crops with Plant Food Issue No. 3 of 2010 Now Available Online The current issue of Better Crops with Plant Food (2010, No. 3) is loaded with articles that focus on spatial variability. It is well known that not all fields or areas of a field respond the same to nutrient applications and other management practices. Topics in this issue come from around the globe and address spatial and temporal variability challenges in large-scale crop production operations as well as small-holder farming situations. For example, an article from northeast China looks at spatial variability and site-specific nutrient management of spring wheat under collective contract cropping, while a story from India reports on use of village level soil fertility maps as a decision support tool in the red and lateritic soil zone. There is an update on advances in the use of remote sensors in Argentinean agriculture and an article on use of active optical sensors for crops in Brazil. From Russia, there is an article summarizing positive results with variable rate fertilizer application in on-farm research with spring wheat in the Trans-Volga Samara region. Optimizing N for wheat growing on hostile subsoils in Australia is a challenge and the need for more research is explained in a summary article. Topics from North America take a closer view of temporal variability of crop response to fertilizer, precision management zones for sugarbeet production, and getting started with precision agriculture. A timely overview article is titled "Precision Agriculture: Does It Make Sense?" Read this Issue Nutrient Source Specifics Series Looking for brief information about the production, agricultural use, management practices, and chemical properties of common fertilizer materials? Read articles |
 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 |
 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 Story IPNI 2010 Edition of Nutrient Deficiency Photo Contest Now Accepting Entries 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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