Influence of residue and weed management practices on no-till wheat (Triticum aestvium L.) under rice-wheat cropping system

摘要

A field experiment was conducted during 2005-2006 and 2006-07 at Varanasi to evaluate the effect of rice residue (R, -residue removal, R2-residue retention, R,-residue retention with Trichoderma application and weed management practices (W,.-Control,W2- Hand weeding at 30 and 45 days after sowing (DAS), W3- Isoproturon +2.4-D (1.0+0.5 kg ha~(-1)) at 30 DAS, W4- Fenoxaprop 120 g ha1 ft Metsulfuron 4 g ha1 on growth, yield attributes and yield of wheat (Triticum aestvium L.). The rice residue retention with Trichoderma application produced significantly higher crop growth, yield attributes, grain (3321 and 3617 kg ha~(-1)) and straw yield as compared to residue retention alone (3264 and 3681 kg ha~(-1)) and residue removal (3069 and 3386 kg ha'). Among the weed management options, application of fenoxaprop ft metsulfuron (120 + 4 g ha~(-1)) gave significantly higher weed control efficiency (WCE) (74.19 and 75.07 %) and grain (3355 and 3722 kg ha~(-1)) and straw yields compared to isoproturon +2,4-D(1.0+0.5 kg ha'). Residue retention with Trichoderma application also registered the highest nitrogen uptake by wheat.