If farmers plant grapes, how to control insect pests? Grape growers, grape pests can not be ignored.
The species of grape pests are relatively few, except for a few kinds of pests, such as grape gall mite, green bug and so on, most grape pests are found occasionally. If there are insect pests in grapes, how should grape growers control them? Let's see what Mr. Fu has to say.
Grape gall mite
Grape gall mite
Growers can spray 3-5 Baume degree stone sulfur mixture after early spring grape sprouting and before leaf expansion, and 0.5% washing powder can be added to the solution to improve the spraying effect. After the grape leaves are unfolded, if it is found that there are killed grape leaves, the growers should remove them immediately and spray to control them. Pesticides can be prevented and treated with 0.2-0.3 Baumedolite-sulfur mixture, or 3000-4000 times solution of 1.8% avermectin EC, or 1000 times solution of 20% tetrazine suspension, etc. Do not use diclofenac on grapes to control mites, because these pesticides contain a certain amount of DDT in the production process, resulting in grape DDT residues exceeding the standard.
Grape green bug bug
Grape green bug bug
Grape growers should scrape off warped skin, clear weeds, withered branches and leaves in winter and early spring, and concentrated treatment can eliminate some overwintering adults. During the sprouting period, the grapes were sprayed with 2000-fold solution of permethrin pesticides such as deltamethrin and cyhalothrin, paying special attention to the early control of newly planted vineyards.
Grape spotted wax cicada
Grape spotted wax cicada
Combined with the pruning and management of grape branches and vines, grape growers can quickly remove the eggs from the branches and shelves and eliminate the overwintering eggs. Observe the back of grape leaves in time during the grape growing period. Once the damaged leaves are found, spray 2000 times the liquid of cypermethrin, cypermethrin and deltamethrin pesticides. When building grape orchards, we should try to stay away from miscellaneous wood forests such as Toona sinensis, so as to reduce the number of spotted wax cicadas.
Grape whitefly
Grape whitefly
Grape growers can be trapped and killed by yellow plate, and aphid wasps can be artificially propagated and released in greenhouse for biological control. Spray to kill adults and nymphs, in the same period, all kinds of insect states, must be used continuously. Commonly used pesticides are 10% deltamethrin EC 1000 times, 25% fenvalerate EC 1000 times, 2.5% deltamethrin EC 3000 times, 2.5% cyhalothrin EC 5000 times, and 20% cypermethrin EC 2000 times.
Grape growers, the above are all kinds of grape pest control methods, grape growers, have you learned? If you have any questions, you can leave a message in the comments.
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