Evaluation of Different Sowing Methods and Varieties on Performance and Agro-Meteorological Indices of Wheat

The field experiment was conducted at Punjab Agricultural University, Ludhiana during the season of 2022-23 to study the effect rabi of different sowing methods on phenological development, agro-meteorological indices and wheat yield.Two wheat varieties PBW-725 viz.and PBW-869 were sown under three different sowing methods conventional sowing, happy seeder sowing and super seeder sowing.viz.Different phenological stages of wheat crop were recorded by visual observations.Crop sown with happy seeder required more number of days to progress through various growth stages (emergence to maturity) followed by those sown with the super seeder and conventional method.The happy seeder sown crop exhibited higher helio-thermal use efficiency, photo-thermal use efficiency, heat use efficiency and radiation use efficiency compared to crop sown with super seeder and conventional methods which contributed to more yield under happy seeder sowing.Linear relationships were established between various agro-meteorological indices and grain yield.The analysis revealed a positive correlation of growing degree days, helio-thermal units, photo-thermal units, and heat use efficiency with grain yield, indicating that increases in these agro-meteorological indices are associated with higher grain yields.