Suksa kan kaengyaeng khong watchaphut lae kan chai san khemi khuapkhum nai mansampalang.
1982
Jumlong Jiamjumnanja
The experiments on weed competition and herbicide application in cassava were conducted at Sriracha Research Station, Cholburi from November 1976 to July 1980. In Competition studies of weeds to cassava in dry season (mid-February) weed control could be delayed only 75 days after planting, and initial weed free duration of 105 days was needed. Preliminary studies on preemergence application of herbicides in dry season (late November to April) indicated that the herbicides which gave satisfactory control of weeds and also without phytotoxic effect on cassava plants were napropamide, cyanazine, alarchlor at the rate of 0.75 and 1.50 kg/ha; thiobencarb, butachlor and methoprotryn at 1.50 and 300 kg/ha; diuron and trifluralin at 0.50 and 1.00kg/ha; linuron at 1.00 and 2.00 kg/ha; metolachlor, flumeturon, thiobencarb P, nitrofen and oxadiazon at 1.00, 2.00, 3.00, 4.00 and 0.80 kg/ha, respectively.
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