Adjuvant improves the efficacy of herbicide for weed management in maize sown under altered sowing methods
Journal Title: Journal of Experimental Biology and Agricultural Sciences - Year 2017, Vol 5, Issue 0
Abstract
Field experiment was performed to investigate the effect of adjuvant on efficacy of herbicides for weed management in maize under different sowing methods. Urea as an adjuvant was used to increase the efficacy of atrazine plus mesotrion herbicide. Weed density, fresh and dry weight of weeds, nutrient uptake (NPK) by weeds, yield and yield related components of maize were significantly affected by sowing methods and different chemical control treatments. Biomass of weeds were decreased in most cases, weeds were controlled in almost all treatments, herbicides’ full and reduced doses were not superior to manual hoeing treatments. Interactive effect among sowing methods and various chemical control treatments significantly affected the weed density, cob length, weight of 1000 grain, number of grains per cob, grain yield and biological yield. Among weed parameters, maximum weed density and biomass was observed at 20 and 40 days after sowing (DAS), and at harvesting when maize was sown as a flat sowing method and sprayed with Mesotrion + Atrazine at the rate of 19.76 g a.i. ha-1 + 197.6 g a.i. ha-1 + 3% Urea, while maximum economic yield (7.51t ha-1) and biological yield (21.82 t ha-1) were found in ridge sown plots as compared to control treatment. The study suggested that the herbicide dose can be condensed up to 20% if urea solution is used as adjuvant to get the same effectiveness as with recommended dose, with no compromised maize yield.
Authors and Affiliations
Muhammad Javaid Akhter, Rana Nadeem Abbas, Muhammad Ahmed Waqas, Mehmood Ali Noor, Muhammad Awais Arshad, Wajid Mahboob, Faisal Nadeem, Muhammad Azam , Umair Gull
Keywords
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- EP ID EP428086
- DOI 10.18006/2017.5(1).022.030
- Views 102
- Downloads 0
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