Field experiment was conducted at Agricultural College and Research Institute, Madurai during Rabi 2010-2011 to study the effect of weed competition in direct seeded rice under aerobic condition. In this study, post-emergence mixture of fenoxaprop + (chlorimuron + metsulfuron) on 30 DAS (T 6 ) provided a broad spectrum of weed control by significantly reducing weed density and dry weight at 60 DAS and resulted in significantly higher weed control efficiency and lower nutrient depletion by weeds. Post-emergence mixture of fenoxaprop + ethoxysulfuron on 30 DAS (T 9 ) resulted in significantly higher nutrient uptake and grain yield of aerobic rice.
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