High-potency cypermethrin, also known as cyanate ether valerate, is an agricultural insecticide that mainly controls lepidoptera pests that occur on crops and has strong toxicity. According to China's standard gb2763-2016, the maximum amount of high-efficiency cypermethrin and cypermethrin residues (isomers) is 10mg/kg for tea, the lowest content for onions and rhizome vegetables is 0.01mg/kg, vegetables are generally higher than 0.5mg/kg, and legumes are generally higher than 0.5mg/kg. High-potency cypermethrin is a common and highly effective insecticide, but how to use it to be effective? There really is a doorway.
Period of application
1. Grape green blind bugs
Optimal control period: pest occurrence
Control method: spray evenly with 10% high-efficiency cypermethrin emulsion 3000-4000 times liquid. For the prevention of green blind bugs, once in 10-25 days, high-performance cypermethrin or bifenthrin or high-performance cypermethrin can be used with imidacloprid or thiamethiazide.
2. Peach small heartworm
Optimal control period: Peach small heartworm overwintering before the emergence of the day
Control method: use 10% high-efficiency cypermethrin emulsion 3000 times liquid and 50% octylthion emulsion 1000 times liquid.
3. Peach aphids
Optimal control period: peach aphid budding stage
Control method: Spray with 10% high efficiency cypermethrin emulsion 2000 times liquid.
4. Pear diptera
Optimal control period: the initial onset of pests begins throughout the onset of the disease
Control method: Spray with 10% high-efficiency cypermethrin emulsion 5000-6000 times liquid.
5. Apple small heartworm
Optimal control period: egg incubation
Control method: use 10% high-efficiency cypermethrin emulsion 3000-4000 times liquid.
6. Pear wood lice
Optimal control period: overwintering or young (1 to 3 years old) nymph occurrence period
Control method: spray evenly with 10% high-efficiency cypermethrin emulsion 3000-4000 times liquid.
7. Shell insects
Optimal control period: the dispersion and transfer period of Nymphs
8. Cotton bollworm
Optimal control period: the early age of pests
Tips: The above concentration is for reference only, please depend on the actual situation.
9. Corn armyworm
When there are more than 100 plants of insects, 20% chlorpyrifos benzamide suspension 4000 times liquid, 4.5% high efficiency cypermethrin emulsion 30 to 50 ml or 40% chlorpyrroenium • thiamethoxine water dispersible granules 8 to 12 grams of water 30 to 45 kg, even spray. In the chemical control process, try to control the corn armyworm before the third age, and the control time is generally selected for the high incidence time of morning and evening larvae feeding. Foliar spray was carried out with 4.5% high-performance cypermethrin 50 ml mixed with water 30 kg, or 4.5% high-efficiency cypermethrin 50 ml plus 50 ml of urea 30 kg water.
10. Blueberry grub
Spray 5% (mass fraction, followed by the same) high-efficiency cypermethrin 1000 times or annihilate 2500 to 3000 times during the adult stage of occurrence.
11. Peppercorn narrow giddings
In summer, the main pepper insect pests are aphids and narrow giddings, aphids are controlled by 80% imidacloprid spray spray, narrow gidding insects are coated on the trunk with high-efficiency cypermethrin 200 times liquid, and then appropriately bound with plastic film to apply the drug site, the effect is better.
12. Potato twenty-eight star ladybug
Grasp the second instar larval stage for pharmaceutical control, you can choose 2.5% high-efficiency cypermethrin emulsion 3000 times liquid, 4.5% high efficiency cypermethrin emulsion 2000 times liquid, 0.5% methylamino avermectin benzoate emulsion 3000 times liquid, 1.8% avermectin emulsion 1000 times liquid and other spray control.
Precautions
1. High-efficiency cypermethrin cannot be mixed with alkaline pesticides.
2. The safety interval of high-efficiency cypermethrin is 10-15 days before harvest.
3. The combination of high-efficiency cypermethrin and avermectin can effectively increase the efficacy.
4, high-efficiency cypermethrin is a flammable substance, must stay away from the source of fire!
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