Possibly correct, but be sure to consider any other factors and consult with local farmers or industry to be sure there is some agreement. Rice culture can also use water storage and periodic flooding to assist in growing, weed control, etc. Coastal areas that lack some way for tidal control or flushing with freshwater can also have losses when tidal rivers are very low, allowing more salt water influence. However, just comments, I am not an expert on India or rice and other crop culture. But 50 years of data is impressive.

i took yearwise data from 1967 to 2016 india and crop wise production (15 crops) and independent variable rain and temp.