Propanil Plus Tridiphane for Barnyardgrass (Echinochloa crus-galli) Control in Rice (Oryza sativa)

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Abstract
Field experiments were conducted from 1983 through 1985 to evaluate the influence of tridiphane at 0.3, 0.6, 1.1, and 2.2 kg ai/ha when tank mixed with propanil at 2.2 or 3.4 kg ai/ha on control of 3- to 4-leaf or 4- to 6-leaf barnyardgrass in rice. Tridiphane at 0.6 kg/ha or greater tank mixed with propanil at 2.2 or 3.4 kg/ha enhanced control of 3- to 4-leaf barnyardgrass compared to propanil applied alone at 3.4 kg/ha. Rates of tridiphane at 1.1 kg/ha or greater plus propanil at 3.4 kg/ha were necessary to control 4- to 6-leaf barnyardgrass. ‘Starbonnet’ rice injury was minimal for all treatments.