Field Screening for Drought Tolerance in GroundnutS NNigamauthorR CNageswara RaoauthorG CWrightauthorDrought is a major abiotic stress affecting yield and quality of rainfed groundnut worldwide. Yield losses due to drought are highly variable in nature depending on its timing, intensity, and duration, coupled with other locationspecific environmental factors such as irradiance and temperature. The effects of drought on groundnut are manifested in several ways, affecting both quantity and quality of the crop. Water deficits, depending on the timing of occurrence, can cause significant reduction in yield by affecting physiological processes such as nitrogen fixation, photosynthesis, and calcium uptake by developing pods.......................Groundnut2002International Crops Research Institute for the Semi-Arid Tropics Book Section