Analyzing Nitrogen Use Efficiency in Long Term Experiments in Rainfed Conditions

摘要

Rainf ed soils are not only thrusty but also hungry. These soils are highly degraded, low in organic matter and are multi-nutrient deficient. Spectacular response to N application is seen in rainfed crops though application levels of nutrients are very low compared to irrigated agriculture. However, harnessing nutrient supply with optimum soil moisture availability is crucial for improving nutrient use efficiency in rainfed agriculture. This paper deals with N deficiency; nutrient consumption; nutrient uptake and N use efficiency in some long-term manurial trials going on under rainfed conditions.