Comparative efficacy and economics of mechanical and chemical weed control in wheat
2000
Kushwaha, B.L. | Singh, P.K. (R.M.P. (P.G.) College, Hardwar (India). Department of Agronomy)
In a field trial, two hand-weedings at 30 to 60 days after sowing of wheat crop was almost similar in yield as that kept weed free for entire crop season. Thus, keeping the crop weed free for entire crop season, did not prove economical. Chemical methods of weed control proved economical due to reduced cost of cultivation by minimizing the number of labours over mechanical methods of weed control alone or in combination with herbicidal treatment. Isoproturon was found to be more effective for controlling weeds in wheat field than that of 2, 4-D Na salt. Pre-emergence application of isoproturon at either dose (0.5 or 0.75 Kg/ha) reduced both grassy and non-grassy weed population and proved superior to post-emergence application of isoproturon alone or in combination with 2, 4-D Na salt.
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