Which types of pesticides are resistant to rain washing?
When should fruit trees not be sprayed with pesticides? Please advise: to improve fruit yield and quality, reduce the number of pesticide applications, and extend the productive life of the trees, the key is to master the following critical periods in pest and disease control. The first is the period when buds clearly swell, that is, the bare-branch spray. During this period, spray a high-concentration fungicide plus insect...
Which pesticides are not afraid of being washed by rain? Please give an introduction.The following pesticides are not afraid of being washed by rain:
Fast-acting pesticides. These pesticides have a strong contact-killing effect. After use, they can kill pests within 1 to 2 hours, and rain 2 hours after application will not affect their efficacy.
Systemic pesticides, such as insecticides like omethoate and imidacloprid, and fungicides like carbendazim and thiophanate. More than 60% of the active ingredients of these pesticides can be absorbed by crops after 4 to 6 hours. Even if heavy rain falls after 6 hours, they can still play a role in killing insects and fungi.
Rain-resistant pesticides. These pesticides are resistant to rain washing. Even if it rains 2 to 4 hours after use, their effectiveness will not be affected, such as validamycin and Bordeaux mixture.
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