Are you still irrigating roots to prevent pests? Is there a new way to do it that works?

Use 1 kg of lime powder, 200 grams of dichlorvos and 15 grams of sulfur powder, put it in a bucket and add water to make a paste to paint the trunk. Because its living environment is relatively hidden, there are relatively few natural enemies that can harm it, and the density of wormholes is relatively stable. 3 yuan a pack can be managed for five minutes, scatter the medicine around the fruit tree, and the heavenly cow will eat it when it smells the medicine, and all of them will die.

Under the tree, avermectin, toxin, you can use it, if there is an eye on the trunk, use a syringe to inject.

<> and the dosage is small, reducing waste, although the drug absorbed by the soil volatilizes slowly, its advantage is that it has a long duration and causes less pollution. Every year to have aphids, we must master the time and amount of spraying, you can use the drug in advance, the prevention and control effect is better than the later medication, each tree buried 1-2 taels, or the use of 70% imidacloprid granules to water 40 pounds, each tree watered 200-300 ml, the effect is good. However, for root nematodes, grubs and other underground pests have little control effect, after all, the effect will be greatly reduced through systemic and then transmitted to underground roots.

Seed treatment and soil treatment can also be carried out to control underground pests such as grubs. However, spraying with thiamethoxam on crops does not control underground pests. It can control underground pests, even mole crickets.

When I transplanted tomatoes last year, I used thiamethoxam as a root irrigator, and it worked very well. With the advantages of good systemic conductivity, high activity, long duration and easy use, it is chosen by many people for pest control. Near evening, sprinkle evenly on the soil and cover it with nylon paper to disinfect the soil and kill underground pests.

In particular, pests and diseases often plague vegetable farmers. There are many greenhouse vegetable farmers and open-air vegetable farmers in the area, and they begin to irrigate the roots of seedlings when the sun is weak and close to setting in the afternoon, and the insecticidal rate is more than 90%, and it also treats grubs and needleworms. You can use avermectin granules or thiazolphosphine as a base application, or you can use avermectin residue as a base fertilizer!

Nematodes can also be treated.

Yes, there is no good way to prevent it at present, and now it can only be carried out through some root irrigation to carry out a series of prevention and promote the development of seedlings.

Before planting, the seedlings are dipped in the roots.

After the seedlings are dipped in the roots, the effect of preventing underground pests is very obvious, and there is almost no harm from underground pests during the growth process, and there is almost no pesticide residue.

Before the use of medicine, the total amount of medicine for all plants should be calculated according to the dosage of a single plant, and then the agent should be diluted with water to a suitable concentration, and then the roots should be irrigated with the prepared solution. The fungicide chosen should not disrupt the biological community and ecological balance inside the soil after being applied to the soil. If the shed has been applied with fungicide, try not to use fungicide to irrigate the roots to prevent disease, so as to prevent killing the beneficial microorganisms in the fungal fertilizer and making the fungal fertilizer ineffective.

Summary. Hello dear, you can use fluopyramide, which is a newly developed bactericidal nematicide by Bayer, with the trade name "Lufuda" and "Baibaig". Since its listing, it has been the first high-efficiency, low-toxicity and environmentally friendly nematicide due to its outstanding effect in the prevention and control of root-knot nematode, gray mold, powdery mildew, leaf mold, gray mold and other diseases, especially in the prevention and control of root-knot nematode.

Dear, you can use fluopyramide, which is the latest bactericidal nematicide developed by Bayer's relatives, with the trade name "Lufuda" and "Bailu Yubaike". Since its listing, it has been the first high-efficiency, low-toxicity and environmentally friendly nematicide due to its outstanding effect in the prevention and control of root-knot nematode, gray mold, powdery mildew, leaf mold, gray mold and other diseases, especially in the prevention and control of root-knot nematode.

Root-knot nematode disturbance, sclerotinia sclerotinia disease, powdery mildew, gray mold, early blight, etc. are the most common hail and most serious diseases on a variety of crops. These diseases have the characteristics of fast spread, serious harm, and difficulty. In particular, Li Fan root-knot nematode disease, which mainly harms underground roots, is more difficult to control, and the use of the above fungicides can be well controlled.

Generally speaking, if the disease of the plant is very serious, the medium group needs to irrigate the plant, but the dosage should be appropriate. If the disease of the plant is not particularly severe, it is better to spray it with chlorothalonil. Chlorothalonil is a broad-spectrum, protective fungicide.

The mechanism of action is that it can interact with glyceraldehyde triphosphate in fungal cells, and bind to the cysteine-containing protein in the orange enzyme, thereby destroying the enzyme activity and causing the metabolism of fungal cells to be damaged and lose vitality. Chlorothalonil has no systemic conduction effect, but after spraying on the plant body, it can have good adhesion on the body surface and is not easy to be washed away by rain, so the effect period is longer.

If the vine is rotten from the inside out, the leaves are wilted at noon on a sunny day, and there is no mold layer in the diseased part, and the vine has adventitious root symptoms, it should be a bacterial disease such as bacterial canker disease or bacterial medullary necrosis.

Bacterial diseases. It is recommended to irrigate the roots with copper preparations such as copper or quinoline copper or thiasen copper, and at the same time spray bacterial pesticides such as mesomycin or thiazole zinc or chunleimycin and so on with foliar fertilizer. (Severe vine symptoms can also be combined with high concentrations of the above products to apply vine disease or injection).

This disease is mainly controlled by root irrigation, supplemented by foliar spray control, and the ability of crops to transmit water and fertilizer is poor after the disease, and the leaves are sprayed with mixed foliar fertilizer to supplement energy.

Serious uprooting! Then the original soil was disinfected with the above-mentioned pesticides.

It is best to prevent it early, and it is best to use copper preparations such as copper ammonia on the day of planting to prevent it.