Abstract :
Groundnut crop in Saurashtra region of Gujarat is predominantly grown as rainfed crop in kharif season. The year to year fluctuation in the crop yields are mainly attributable to the variation in rainfall and its distribution. In order to study inter-relationships between rainfall distribution and groundnut yield in Bhavnagar and Junagadh districts of Gujarat state, correlation and regression analysis techniques were employed. The district-wise average yield data of groundnut and daily rainfall data were used over a period of 44 years i.e. from 1970-2014. Five broad approaches were tried to study the inter-relationships between rainfall distribution and groundnut yield. They were (1) aggregate rainfall, (2) monthly rainfall (3) fortnightly rainfall (4) week-wise rainfall and (5) crop phase-wise rainfall. In general it could be inferred that that the quantum of rainfall during different phenophases of the groundnut had appreciable influence on groundnut productivity.
Keyword :
Inter-relationships, rainfall, distribution, yield, groundnut