In the protein-rich group of crops, red gram or pigeonpea [Cajanus cajan (L.) Millsp.] occupies an important place among rainfed resource poor farmers because it provides quality food, fuel wood, and fodder. Its soil rejuvenation qualities such as release of soil-bound phosphorous, fixation of atmospheric nitrogen, recycling of soil nutrients, and addition of organic matter and other nutrients make pigeonpea an ideal crop of sustainable agriculture in the tropical and sub-tropical regions of India. India is the major pigeonpea growing country and it accounts for 36.3 lakh hectare area and 27.6 lakh tonnes annual production with productivity of 760kg per hectare (Anon., 2012).