Amit Kumar Yadav, Kritanjay Kumar Maurya, Krishna Kumar Pandey, Vishal Mehta, Abhishek Yadav and Utkarsh Pandey
Abstract
Weather conditions play an important role in wheat production. The present study analyzed the individual and joint effects of selected weather variables on wheat yield using long-term data. Wheat yield data for 33 years (1990-91 to 2022-23) along with weekly weather data on minimum temperature, maximum temperature, bright sunshine hours, and wind velocity were used. Weather indices were developed using weighted and simple (unweighted) approaches, and multiple regression models were fitted to study their effects on yield. The results showed that most weather indices were not significant, while the time trend had a positive and highly significant effect in most models. Bright sunshine hours showed comparatively stronger influence on wheat yield.