Prevention of locust recipe - fenbutatin
Other names for fenbutatine are Tolke, Krypton-Tin, Nguyen-Chenxi, Fenbuxi, etc. The common dosage forms are 50% phenylbutan WP, 20% fenbutatin, and 10% fenbutatin. , 25% fenbutatin wettable powder and so on. There are currently more than 30 companies registered in the Ministry of Agriculture's Institute of Drug Control, among which the Zhejiang Pharmaceutical Chemicals Co., Ltd., Shanghai Sakamoto Pharmaceutical Co., Ltd., Wuxi City Jiabao Pharmaceutical Co., Ltd., Guangdong Province Foshan Daxing Biological Chemical Co., Ltd., Zhejiang Huaxing Chemical Pesticide Co., Ltd. and several other companies.
Butyltin is a long-acting, special acaricide, which has a good contact with Pteris. The initial virulence after spraying was slow, the activity began to increase after 3 days, and peaked at 14 days. Long period of validity, up to 30 days or more. It has no harm to crops and is safe to various natural enemies and beneficial insects. It is suitable for controlling many kinds of pests of crops such as fruit trees, vegetables, tea trees, cotton and flowers, but it is not effective for quail eggs. When fenbutatin is used at temperatures below 22 degrees, it has low efficacy and should not be used at low temperatures.
Object of prevention and use:
1. Pests of fruit trees: control citrus spider mites, from April to May in April; prevent citrus rust, grow fruit on fruit and fruit on citrus; prevent and control apple, hawthorn red spider, prevent and treat hail in summer Use a concentration of 10% EC 500-800 times, 25% wettable powder 1000-1500 times, and 50% wettable powder 2000-3000 times evenly spray. The validity period is 1-2 months.
2. Tea tree pods: control tea orange wolfberry, tea short mash, in the tea non-picking period, with the center of the occurrence of spot prevention and control, the occurrence of a comprehensive prevention peak. Spray evenly with 50% wettable powder 1500 times. Tea leaves are mostly concentrated in the back of the leaves and in the lower part of the tea bush. The spraying must be even and thorough.
3. Tea plant pests and diseases: control of chrysanthemum leafhoppers, rose leafhoppers, in the occurrence period with 50% wettable powder 1000 times, evenly sprayed on the foliage and leaves.
Precautions:
1. The phenathine daily allowable intake (ADI) is 0.03 mg/kg.
2. Maximum residue limits (international standard) in crops, 5 mg/l in citrus, 1 mg/l in tomato, up to 6 times, with a maximum drug concentration of 1000 mg/l.
3. The last application from the harvest time, citrus more than 14 days, 10 days before the harvest of the tomato was stopped.
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