Abstract:

Oxadiazon?acetochlor 42% EC was sprayed on soil with pre-emerge peanut to study its control effect, optimum dosage, control techniques on annual weeds and safety to peanut by field trails. The results showed that oxadiazon?acetochlor 42% EC had excellent control effect on annual weeds and no injuries of peanut seedling in peanut fields. The stem control effect of annual weeds reached 91.7%-93.2% after 20 days and 85.7%-87.7% after 40 days at the optimum dosage of 810-1080 g a.i. and water 600 L per hectare. The fresh weight effect of this treatment was 82.1%-84.4% after 40 days.