When should rice be sprayed with insecticides?
When should rice be sprayed with insecticides? Spraying insecticides on rice should pay attention to the following points: do not spray insecticides on rainy days, which is the basic knowledge of farmers, but many farmers often spray them at noon on sunny days, which is very undesirable and harmful, because: 1. At noon, the light is strong, the pests hide in the back of leaves and stems, the insecticidal effect is poor; 2, the medicine volatilizes and decomposes late under high temperature and strong light, and the control effect is poor. 3. Drugs do great harm to the human body. At this time, pesticide poisoning accidents are most likely to occur. Spraying insecticides is best at 8: 30 am and 4: 30 pm, because the dew is dry at this time in the morning, the medicine will not be diluted by dew and the efficacy will not be reduced, and the temperature is not high. It is the time when the activity of sunrise pests is most vigorous, and the control effect is the best. It is time for nocturnal pests to start their activities when the light is getting weaker in the afternoon. Spraying insecticides can effectively kill nocturnal pests. More insecticide application techniques and more rice planting techniques
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Why does spraying herbicide cause drug damage?
What types of herbicides can't be used on the lawn? Try not to use lawn herbicides: 1. Herbicides with long residual period include amidazolone propoxide, sulfonylurea metsulfuron, benzenesulfuron, heterocyclic trimethoprim and so on. These herbicides have a long residual period in the soil and have been used.
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What pesticides are often used in bananas?
What pesticides are often used in bananas? The following varieties of commonly used insecticides for bananas are introduced: (1) 5% wettable powder is a new type of insecticide with high efficiency and low toxicity, which can significantly prevent crop pests such as aphids and thrips.
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