Effect of some post-emergence herbicides on wheat (Triticum aestivum L.) and associated weeds
1993
Ahmed, K. | Shah, Z. | Awan, I. | Khan, H. | Khan, H. (Gomal Univ., D.I. Khan (Pakistan). Dept. of Agronomy)
An experiment was conducted to determine the effect of six herbicides viz., Arelon 50 SC, Graminon 500 SC, Tribunil 70 WP, 2,4-D (Powder), Buctril M 40 EC and Dicuran MA 60 WP as post-emergence compared with one hand weeding and weedy check on weed population and grain yield of wheat, cultivar Pirsabak-85 during 1990-91. The experiment was laid out in a Randomized Complete Block Design with four replications. The results revealed that the application of herbicides and hand weeding significantly affected the number of productive tillers/m2 and grain yield (t/ha) while plant height at maturity (cm), head weight (g), number of grains per spike and 1000-grain weight (g) were not significantly affected by either the herbicides application or hand weeding over weedy check. The treated plots boosted grain yield of wheat over weedy check plots. However, Tribunil 70 WP gave the maximum grain yield of 4.863 t/ha followed by Arelon 50 SC (4.783 t/ha) while the minimum grain yields were recorded in weedy check plots (4.014 t/ha). Economic analysis of yield data indicated higher benefit-cost ratio in case of Tribunil 70 WP (31.240 %) followed by Arelon 50 SC (26.97 %) and Dicuran MA 60 WP (18.506%) which is a difference from weedy check.
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