Site-Specific Evaluation of the CERES Rice and Statistical Models to Predict Crop Yield Responses for Rice Cultivars at Uttar Pradesh

The study aimed at CERES model validation for rice cultivars at different dates of transplanting and different varieties. Treatment consisted of three varieties viz. Sarjoo-52, NDR-359 and Pant Dhan-4 and two date of transplanting viz. July 5, 2005 and July 25, 2005. The experiment was laid out in randomized block design. The simulation modeling were subsequently validate dagainst observe datafrom field experiment. Amongthe varieties accuracy of Pant Dhan-4 was found better in respect of biomass, Grain Yield (q/ha), Weight grain (gm), on 5^th July transplanting as comparison with 25^th July transplanting. Findings suggests that simulation modeling accuracy increased with earlytrans planting in all the varieties, however in statistical modeling grain yield (q/ha) prediction in both transplanting date the Sarjoo-52 was found to have close difference in observed with predicted value followed by Pant Dhan-4 and NDR-359.