What is a highly effective and low-toxic pesticide?
2023-10-03 16:07:30
High potency, generally means that under normal conditions, the pesticide has the following control effects: 50 grams of active ingredient per acre of insecticide, the control effect is greater than 90%; the fungicide sprays 100 grams of active ingredient per acre of land, The control effect is greater than 70%; the herbicide applies 250 grams of active ingredient per acre, and its control effect is greater than 70%.
All in all, the highly effective pesticides for diseases, insects and weeds are high-efficiency pesticides. Pesticides are highly toxic to higher animals. The magnitude of toxicity is often expressed as the lethal dose (LD50) or lethal concentration (LC50) of rats, mice or rabbits, in milligrams per kilogram of body weight. The smaller the value of LD50 (or LC50), the greater the toxicity; conversely, the larger the value, the less toxic.
The toxicity of pesticides to mice or rabbits also reflects the toxicity to humans and animals. The acute toxicity of low-toxic pesticides (LD50) mg/kg is: oral administration of rats over 500-5000; rabbit skin application 350-2810 or more; rats inhaled through the respiratory tract for 4 hours to kill 1/3-1/2 concentration ( LC1/3-1/2) ppm, above 1000-10000.
According to this standard, the pesticides that are low in toxicity are: phoxim, methotrexate, Nongmute, Kruth, 螨代治, Tork, Pyrbis, Fujitsu, Rust, and chlorothalonil. , carbendazim, carbendazim, ruthenium sulphate, DT emulsion, Heda Zhuang, Nongdang, Weiluosheng, Youke saponin, acetochlor, chlorpyrifos, oxacillin, Bentazon, Dole, Lasso, Fluoride, Jingshen, Nateng, Hetrajin, etc. The first six of the above pesticides are insecticides and acaricides, the middle ones are fungicides, and the others are herbicides.
All in all, the highly effective pesticides for diseases, insects and weeds are high-efficiency pesticides. Pesticides are highly toxic to higher animals. The magnitude of toxicity is often expressed as the lethal dose (LD50) or lethal concentration (LC50) of rats, mice or rabbits, in milligrams per kilogram of body weight. The smaller the value of LD50 (or LC50), the greater the toxicity; conversely, the larger the value, the less toxic.
The toxicity of pesticides to mice or rabbits also reflects the toxicity to humans and animals. The acute toxicity of low-toxic pesticides (LD50) mg/kg is: oral administration of rats over 500-5000; rabbit skin application 350-2810 or more; rats inhaled through the respiratory tract for 4 hours to kill 1/3-1/2 concentration ( LC1/3-1/2) ppm, above 1000-10000.
According to this standard, the pesticides that are low in toxicity are: phoxim, methotrexate, Nongmute, Kruth, 螨代治, Tork, Pyrbis, Fujitsu, Rust, and chlorothalonil. , carbendazim, carbendazim, ruthenium sulphate, DT emulsion, Heda Zhuang, Nongdang, Weiluosheng, Youke saponin, acetochlor, chlorpyrifos, oxacillin, Bentazon, Dole, Lasso, Fluoride, Jingshen, Nateng, Hetrajin, etc. The first six of the above pesticides are insecticides and acaricides, the middle ones are fungicides, and the others are herbicides.
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