A climatological study on double cropping under Rainfed conditions in Bangalore region

The main rainfall, the coefficient of variation, the probability of getting a dry week and the probabilities of the weekly rainfall exceeding 0.5, I .0, 2. 0, 3.0 and 4. U cm ' during different weeks for the months April to December have been worked out using the rainfall data collected at Bangalore for the years J921 to 1970. The periods from 16 May to 15 August and 16 August to 15 December were considered as the crop seasons for growing cowpea and ragi respectively. The rainfall distributions for the two crop seasons was compared with the rainfall distribution in the traditional crop growing Season from 16 July to 15 November. The conditions by which two crops can be raised under rainfed condition in Bangalore region has been discussed.