The present study was conducted at the Norman E. Borlaug Crop Research Centre of . Pant University of Agriculture and Technology, Pantnagar to study the impact of increasing temperature and Carbon dioxide concentration on the dry weight yield of sugarcane crop during the crop growing season of 2015 and 2016. The performance of the CANEGRO model was found to be satisfactory for all the crop characteristics during the crop growing season. The variety of sugarcane that was selected for the study was Co-Pant 5224. The model sensitivity was analyzed for parameters like maximum and minimum temperatures (°C) and Carbon dioxide concentrations (ppm). The temperature variations were applied from ±1 °C to ±3 °C and the CO2 concentration was raised from ±50 to ±150 ppm. The sugarcane dry weight yield increased from 8277 kg/ha to 9561 kg/ha and decreased from 7057 kg/ha to 5954 kg/ha on increasing the temperature in 2015. While in the year 2016, the dry weight yield increased from 7759 kg/ha to 8499 kg/ha on decreasing the temperature while it decreased from 6938 kg/ha to 5372 kg/ha on increasing the temperature. The dry cane yield increased from 7834 kg/ha to 7986 kg/ha on raising the CO2 concentration from 50 ppm to 150 ppm while it decreased from 7510 kg/ha to 6318 kg/ha on decreasing the CO2 concentration in 2015. Similar was the trend found in the year 2016. The model was found to be sensitive to the effect of temperature either decreasing or increasing it than mean temperature and CO2 concentration. | Testing the sensitivity of canegro model for variability in temperature and Co2 concentration in Tarai region of Uttarakhand, India
