Indian Journal of Weed Science
Year : 2005, Volume : 37, Issue : 3&4
First page : ( 197) Last page : ( 201)
Print ISSN : 0253-8040.

Effect of Herbicides Alone and in Combination on Direct Seeded Rice

Singh V. P., Singh Govindra, Singh R. K., Singh S. P., Kumar Abnish, Dhyani V. C., Kumar M., Sharma G

Department of Agronomy, G. B. Pant University of Agriculture & Technology, Pantnagar-263 145 (Uttaranchal), India.

Abstract

Progressive increase in doses of both pendimethalin (from 1.0 to 2.0 kg ha⁻¹) and anilofos (from 0.4 to 0.8 kg ha⁻¹) resulted in decreased density and dry weight of all the weeds at 60 days stage. However, both the herbicides were more effective when 2, 4-D at 0.5 kg ha⁻¹ or bentazon at 0.72 kg ha⁻¹ were applied as follow up application. With follow up treatment pendimethalin at 1.0 kg ha⁻¹ with 2, 4-D at 0.5 kg ha⁻¹ recorded highest grain yield and weed control efficiency. Among alone applications oxyfluorfen at 0.25 kg ha⁻¹ was most effective as it was able to control both broad-leaved weeds and grasses, however, it was not as effective as herbicide combinations in obtaining grain yield.

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