How to improve the control effect of pesticides against pests and diseases occurring in various parts of wheat?

How to improve the control effect of pesticides against pests and diseases occurring in various parts of wheat?

If crops are ill, they need to use agricultural pharmacy. I believe this is clear to everyone. However, many people are not sure how to improve the control effect of pesticides. Some farmers grow wheat, and even use a lot of pesticides. The wheat disease has not been alleviated, but it has become more serious. Xiaobian now talk to you about this issue.

小麦各部位病虫害

1. Pesticide control of wheat ear disease

The pests and diseases that occur in the ear are mainly scab, smut, stalk and wheat stalk, which leads to the decrease of the ear and 1000-grain weight, which can not only cause serious yield reduction, but also the fungus toxin can cause wheat contamination, which should cause highly valued. In addition to smut can only be treated with a triazole fungicide for seed treatment before sowing, scab, spike, and wheat bran can be controlled in the flowering and filling stages. Prevention and control of scab and sclerotia can be carried out from the first spike to the early flowering stage, using 40% carbendazim SC100ml per acre, 40-50kg regular spray on water, or 20kg mist, electrostatic spray control, to mist and static electricity. The spray works best. It must be noted that if the amount of water spray is insufficient, the effect will be significantly reduced. The control of wheat bran can be controlled 1-2 times with 10% imidacloprid wettable powder (WP) insecticide 20-25g/mu spray at the initial stage.

小麦病虫害农药防治

Second, the late stage of wheat growth, leaf surface disease, pesticide control

The leaf disease in the late growth stage of wheat is mainly rust and powdery mildew. It can be sprayed with 20% of tebuconazole or propiconazole suspension 20-40ml before heading. The amount of water is the same as that of panicle. Continuous spraying of high-efficiency, low-toxicity and selective triazole pesticides in the late growth stage of wheat can prevent wheat scab, sclerotium, rust and powdery mildew, restore yield loss, and effectively control the production of scab. Toxin pollution can also promote wheat growth, enhance photosynthesis, resist dry hot winds and delay aging, and significantly increase wheat yield.

Third, the late stage of wheat growth, the basic disease pesticide control

The basic diseases in the late growth stage of wheat are mainly sheath blight and total erosion, which can cause premature aging of wheat and even death of plants. These two diseases mainly occur at the base of the plant, and it is difficult to control with the fungicide in the late stage of wheat growth, because it is difficult to apply the agent to the base of the infected wheat stem, and even if the systemic fungicide is selected, it cannot move to the base in the wheat body. Therefore, we should reduce the occurrence of diseases by controlling the humidity in the field.

小麦病虫害

I explained in detail the diseases that occurred in various parts of the wheat during the growth period and how to improve the control effect of the pesticides. I don't know if everyone understands it thoroughly.

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