Atlas on climate change impacts on crop water balance of Groundnut (Arachis hypogaea) and Pigeon pea (Cajanus cajan) in rainfed districts of Andhra Pradesh

Andhra Pradesh is the key producer of groundnut and pigeon pea within India. Owing to its diversity in agro ecological situations, location specific requirements and land use, the crop water balance varies, affecting the crop production in rainfed districts. Therefore, the problem of climate change may need to be addressed first at regional level and later at national level as a part of adaptation and mitigation strategies. Increased frequency of untimely high intensity rains upset the soil-water balance for which rainwater harvesting can act as a technology stopgap in placing appropriate crops and cropping systems at farm level in Andhra Pradesh where Groundnut and pigeon pea are grown primarily as rainfed crops. For efficient use of harvested rain water or for managing ground water, documenting the components of water balance will come in handy in saving crops from extreme weather events. Besides these, documentation would also help in effective water resources planning and management. In this context, this Atlas with Geospatial maps is brought out which deals with the issues pertaining to crop water balance and mapping the dynamics of its components in rainfed areas of the state of Andhra Pradesh.