Nitrogen in the environment : nitrogen replacement value of legumes

Abstract

"Nitrogen is essential for all plant life. Regarding agricultural crops, a sound nitrogen management program is important for achieving high yields. For many crops, application nitrogen fertilizer is both a practical and sound method to produce top yields. The use of legumes, such as soybeans or alfalfa, can also be a valuable practice in the overall nitrogen management program of a crop rotation. Their use is valuable because they can add nitrogen to the soil for subsequent crops."--First page.