01261nam a2200217Ia 4500 CTU_229054 210402s9999 xx 000 0 und d 631.81 U58/Vol.10 United Nations Economic Commission for Europe Efficient use of fertilizers in agriculture United Nations Economic Commission for Europe New York The United Nations 1983 An important way farmers can conserve energy is making efficient use of fertilizers and other nutrient sources. This book will introduce farmers to the concepts of fertilizer energy and efficient nutrient use. It discusses how to optimize fertilizer use by soil testing, fertilizer placement, and application and by using farm manures and cover crops as part of a soil fertility plan. It includes a discussion on the impact of nutrient carry-over and crop rotation on fertility planning. Thoughtful use of these management practices will help farmers conserve energy and save money. Cây trồng,Crops Dinh dưỡng,Hội nghị,Nutrition,Congresses Nhật Ngân dqhieu Trung tâm Học liệu Trường Đại học Cần Thơ