31 Mar 2017

4R Phosphorus Management Practices for Major Commodity Crops of North America

Phosphorus plays crucial roles in biology and sustainability. It's particularly important in crop nutrition. 4R practices for phosphorus management have great potential to improve both crop yields and water quality. This paper reviews a science-based effort to describe such practices.

11 May 2016

Managing Phosphorus Sustainability

IPNI Webinar presented on 11 May 2016

02 May 2014

Crop Nutrient Balances

The crop nutrient balance--the comparison of nutrients applied in relation those removed by crops--is an important indicator of the sustainability performance of crop production. Deficits in the nutrient balance can limit crop yields and deplete soil fertility, and surpluses can cause economic waste

06 Jan 2014

Plant Nutrition Today

One-page news articles on current nutrient stewardship issues.

07 Jan 2013

4R Nutrient Stewardship Portal

Materials developed by IPNI and other cooperators on 4Rs

04 Dec 2012

4R Nutrient Stewardship Topic

Right Source, Right Rate, Right Time, Right Place

Program Profile

All IPNI scientists’ activities include agronomic programs that address phosphorus, nitrogen, potassium and other plant nutrients. 4R Nutrient Stewardship is a strategic component of the Institute’s regional and global tactical plans to support agriculture's ability to meet the world's production needs in a sustainable manner. Having a Phosphorus Program Director provides a point person to lead the Institute’s ongoing efforts in ensuring phosphorus is used effectively and efficiently.

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Heidi Peterson

Heidi Peterson joined the International Plant Nutrition Institute (IPNI) in 2017. Based in Stillwater, Minnesota, U.S.A., Heidi is the Phosphorus Program Director for IPNI. Dr. Peterson came to IPNI with significant leadership, teaching, and research experience surrounding phosphorus stewardship issues. She belongs to the American Society of Agronomy, American Society of Agricultural and Biological Engineers, and the Soil and Water Conservation Society.

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