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4R

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

eKonomics News Team

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In this Issue Review, potential issues needing addressed and P management practices for five cropping systems in North America are described. To decrease the chances of environmental impact while supporting high crop yields, producers should question: what source they use, what application rate to apply, what timing coordinates with crop uptake, and what placement they should utilize.

The International Plant Nutrition Institute (IPNI) is well known for their promotion of the 4R’s: right source, right rate, right time, and right place. In this Issue Review, Dr. Bruulsema discusses the potential environmental concerns associated with higher phosphorus (P) application rates due to expectations of higher yields. A science workshop sponsored by IPNI and The Fertilizer Institute (TFI), in collaboration with Field to Market® Alliance for Sustainable Agriculture, was held in June, 2016 in Washington, D. C. The main goal of the workshop was to describe 4R practices specific to each of the major commodity cropping systems of North America. There were 19 specialists that contributed to the conference from all over the U.S. and Canada.