An examination of how applying 4R Nutrient Stewardship practices can help achieve proper nutrient use efficiency.

The International Plant Nutrition Institute (IPNI) explains how farmers make 4R decisions (i.e., decisions on applying the Right source at the Right rate, Right time, and Right place) to minimize greenhouse gas emissions resulting from their nitrogen fertilizer applications. 4R Nutrient Stewardship promotes the best management practices that help farmers maximize the economic, social, and environmental performance of their nutrient applications.