Effect of rice stubble and nitrogen fertilizer management techniques on yield of wheat sown after rice

摘要: Abstract A series of four factorial experiments was undertaken to study the effects different stubble and N fertilizer management practices on yield wheat (Triticum aestivum L.) sown soon after rice (Oryza sativa harvest. The project aimed develop a package for successful growing in intensive rice-based rotations. Stubble technique, application time rate were all important determinants yield, accounting up 50, 31 43%, respectively, variance. Direct drilling into standing resulted highest average (2.4 t ha−1), with least year variation (S.D. = 0.40 ha−1). Burning followed by direct yielded 1.9 ha−1, but high 0.94 plus cultivation reduced (1.6 while incorporating 6–12 weeks before sowing slightly higher (2 ha−1) than at Wheat fell increasing levels (0–167 kg plots where incorporated sowing, increased when burnt or retained surface. Nitrogen frequently doubled largely number grains per head, addition heads m2 grain weight. Delaying until tillering usually yield. significantly 140 ha−1 applied tillering. stem elongation head maximum 70 ha−1. It concluded that directly delaying maximized rice.