Variability analysis and impact of weather parameters on productivity of green gram in Jalgaon district of Maharashtra

The secondary data on productivity of green gram in Jalgaon district, Maharashtra from the year 1991 to 2018 (28 years) were collected from Epitome of Maharashtra. Looking to the adverse climatic situation and persistent changes in productivity of green gram in Jalgaon district, the present investigations were undertaken in order to study the impact of weather parameters on productivity of green gram. The study revealed that annual average number of rainy days was 39.5 with a standard deviation of 8.9 days during the season period of green gram during last 28 years. Thus among the weather parameters high variability was observed in case of wind velocity (58.4%) followed by bright sunshine hours (43.9%) while the area and production of green gram in Jalgaon district showed wide variation depicting that the number of rainy days was the most important factor for achieving higher yield in the district. The productivity of green gram was mostly influenced by rainfall and number of rainy days. The wind velocity and relative humidity in the evening indirectly influenced the productivity of green gram during the study period. In the present study the highest contribution of wind velocity (22.09%) in productivity of green gram was observed.