What are the functions and effects of Imidacloprid?
1. Function
(1) Imidacloprid can kill aphids, planthoppers, whiteflies, leafhoppers, thrips and other piercing-sucking pests, as well as Coleoptera, Diptera and Lepidoptera pests, such as leafminers, rice weevils, rice mudworms, etc.
(2) Imidacloprid is a new generation of chlorinated nicotine insecticide with the characteristics of broad spectrum, high efficiency, low toxicity and low residue, and has multiple effects of contact killing, stomach poisoning and systemic absorption. After use, pests are not easy to develop resistance.
2. Effect
(1) Imidacloprid is a nitromethylene systemic insecticide (the agonist of nicotinic acetylcholine receptors), which can interfere with the motor nervous system of pests, causing the failure of chemical signal transmission, and there is no cross-resistance problem.
(2) After the pests come into contact with the agent, the normal conduction of the central nervous system is blocked, and eventually paralysis and death.
(3) Imidacloprid cannot control nematodes and red spiders.
3. Speed of effect
(1) It will start to take effect after about 10 minutes after application (when mixed with pyrethroid drugs, aphids can die within 3-5 minutes), and a high degree of control effect can be achieved after 24 hours after application.
(2) When the temperature is above 23-26℃, the effect of imidacloprid is better, and the effect is slower when the temperature is below 10℃.
(3) When the weather is clear and windless, the pesticide can be applied around 10 am or around 3-4 pm. At this time, there is no dew in the field and the drug will not be diluted.
How to use imidacloprid
1. Wheat aphids
(1) Before sowing, use 60-70 grams of imidacloprid suspension seed dressing agent (600 grams/liter) for every 10 kilograms of seeds.
(2) From the heading stage to the early filling stage, use 4-7g of 70% imidacloprid water dispersible granules per mu and dilute them with 30-45kg of water for even spraying, and spray 1-2 times in a row.
2. Fruit pests
When controlling pests such as aphids, whiteflies, thrips, and leafminers on fruit crops such as cucumbers, eggplants, tomatoes, and watermelons, use 12-16g of 25% imidacloprid wettable powder per mu and dilute them with 45-60kg of water for even spraying, spraying once every 15 days, and spraying twice in a row.
3. Cruciferous vegetable pests
When controlling pests such as aphids, leafhoppers, and whiteflies, use 15-20g of 10% imidacloprid wettable powder per mu and dilute them with 30-45kg of water for even spraying, spraying once every 15 days, and spraying twice in a row.
4. Protected Area Pests
To control pests such as whiteflies and leafminers in protected areas, evenly spray 6-8g of 70% imidacloprid water-dispersible granules per mu (approximately 100-200g) in 45-60kg of water at the initial onset of an infestation. Spray once every 10-15 days for 2-3 consecutive sprays.
5. Tea Tree Green Leafhopper
In the early stages of an infestation (or when insect numbers begin to increase rapidly), evenly spray 25% imidacloprid wettable powder at a dilution of 3,000-4,000 times, or 5% imidacloprid emulsifiable concentrate at a dilution of 600-800 times, or 10% imidacloprid wettable powder at a dilution of 1,200-1,500 times, or 350 g/L imidacloprid suspension concentrate at a dilution of 4,000-6,000 times, or 200 g/L imidacloprid soluble concentrate at a dilution of 2,500-3,000 times, or 50% imidacloprid wettable powder at a dilution of 6,000-8,000 times. Spray every 10-15 days for 2-3 consecutive sprays.
