A study was performed to determine the relative loss in corn production during the flowering season and to determine the drought period for losses of 10, 20, 30 and 50%, in Rio Verde Grande watershed, Minas Gerais, Brazil. The drought period varied from 2 to 4, 3 to 7, 4 to 9 and 5 to 11 days, during the flowering stage for loss in corn production of 10, 20, 30 e 50%, respectively. The corn crop is more sensitive in the north region of watershed for the studied planting period and requires a critical analysis of cultivation of this crop under rainfed conditions.
drought; Monte Carlo method; corn
