The Nutrient Stewardship 4R Pocket Guide

4R Nutrient Stewardship is a new innovative approach for fertilizer best management practices adopted by the world’s fertilizer industry. This approach considers economic, social and environmental dimensions of nutrient management and is essential to sustainability of agricultural systems. The concept is simple—apply the right source of nutrient, at the right rate, at the right time and in the right place—but the implementation isknowledge‐intensive and site‐specific