The growth period of summer corn is high in the high temperature and high humidity season. The growth of weeds in the field is rapid and the rain is more artificial. It is more difficult to control weeds in labor. The chemical weeding in the cornfield is more and more accepted and widely used by farmers. There are many varieties of corn herbicides that require high technical use and can cause phytotoxicity to corn. The following five points are the precautions for using herbicides in summer corn fields:
First, after harvesting wheat, if there are a lot of weeds in the ground, it is necessary to use a herbicide. Glyphosate is a systemic herbicide that does not show any effect in the early stage after spraying, but in about two weeks, weeds will die from the roots.
Secondly, the herbicides that are unearthed from weeds include E-A mixture, Yucaojing and Dua mixture. Generally, 200 grams of preparation per acre and 45 kilograms of water are used, and the control effect is good. If the amount of water is small, the sealing layer of the agent is thin, and some weeds with strong resistance can easily drill the sealing layer, which makes the control effect poor. However, the amount of water should not be too large, otherwise the effective concentration of the agent will be reduced, and the sealing effect will not be achieved.
Thirdly, once the above-mentioned closed herbicides are exposed to cotton, peanuts, soybeans and vegetables, they will produce different degrees of phytotoxicity. Therefore, when spraying the above herbicides, the following principles must be followed: spray as much as possible without wind, and strictly prevent the chemicals from accompanying The wind drifts to the crops such as vegetables and peanuts; spray the nozzles down to minimize the drift of the medicament; wear a protective cover and spray it in front of the nozzle.
Fourth, in recent years, due to the poor effect of closed herbicides in some areas, some farmers have grown up such as corn and weeds, and then weeded with herbicides such as Yu Nongle and Yuheng. However, it is necessary to remind farmers' friends that the best period of prevention and control is when the corn is 4 to 5 leaves and the weeds are 3 to 4 leaves. If the corn is treated with 7 leaves, it may cause phytotoxicity.
Fifth, pests can occur in corn fields, and insecticides can be mixed with herbicides. However, when using herbicides Yu Nongle and Yuheng, they cannot be mixed with organophosphorus pesticides. They can only be mixed with pyrethroid pesticides. Read the instructions.
First, after harvesting wheat, if there are a lot of weeds in the ground, it is necessary to use a herbicide. Glyphosate is a systemic herbicide that does not show any effect in the early stage after spraying, but in about two weeks, weeds will die from the roots.
Secondly, the herbicides that are unearthed from weeds include E-A mixture, Yucaojing and Dua mixture. Generally, 200 grams of preparation per acre and 45 kilograms of water are used, and the control effect is good. If the amount of water is small, the sealing layer of the agent is thin, and some weeds with strong resistance can easily drill the sealing layer, which makes the control effect poor. However, the amount of water should not be too large, otherwise the effective concentration of the agent will be reduced, and the sealing effect will not be achieved.
Thirdly, once the above-mentioned closed herbicides are exposed to cotton, peanuts, soybeans and vegetables, they will produce different degrees of phytotoxicity. Therefore, when spraying the above herbicides, the following principles must be followed: spray as much as possible without wind, and strictly prevent the chemicals from accompanying The wind drifts to the crops such as vegetables and peanuts; spray the nozzles down to minimize the drift of the medicament; wear a protective cover and spray it in front of the nozzle.
Fourth, in recent years, due to the poor effect of closed herbicides in some areas, some farmers have grown up such as corn and weeds, and then weeded with herbicides such as Yu Nongle and Yuheng. However, it is necessary to remind farmers' friends that the best period of prevention and control is when the corn is 4 to 5 leaves and the weeds are 3 to 4 leaves. If the corn is treated with 7 leaves, it may cause phytotoxicity.
Fifth, pests can occur in corn fields, and insecticides can be mixed with herbicides. However, when using herbicides Yu Nongle and Yuheng, they cannot be mixed with organophosphorus pesticides. They can only be mixed with pyrethroid pesticides. Read the instructions.
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