Effect of rice straw buring on the efficacy of herbicides in wheat (Triticum aestivum)
1999
Singh, Samar | Malik, R.K. | Ram, Mangat(CCS Haryana Agricultural University, Karnal(India). Regional Research Station)
The field trials on wheat (Triticum aestivum emend. Fiori & Paol.) were conducted during 1992-94 at Uchani (Karnal) to find out the effect of rice straw burning and weed control tratments on Phalaris minor and wheat yield. Burning of the straw (6 or 12 tonnes/ha) increased the population and dry weight of weed, and decreased the wheat yield over straw removal. Isoproturon (1.00 and 1.25 kg/ha) and pendimethalin (1.50 kg/ha) being on par brought about significant control of weeds leading to increased wheat yield over weedy check. Weed infestation 90 DAS was greater in burnt plots than in unburnt plots, and the herbicides were more effective under unburnt conditions indicating their reduced efficiency under straw burnt conditions.
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