Pesticide is a necessity for crop cultivation, but the use of the plant more or less causes phytotoxicity to crops. Today, Xiaobian tells you about the remedies for common phytotoxicity of crop cultivation, and farmers have to look over it.
In the process of using pesticides, if it is inadvertently heavy, it will easily cause phytotoxicity, affecting the growth of crops, forming a large area to reduce production, and even when severe, there will be no granules. Then, what kind of remedial measures should be taken after the phytotoxicity is presented?
Spray with water or alkaline water
When the pesticide is sprayed on the lighter and earlier phytotoxicity formed by the foliage of the plant, the leaf surface of the victim crop should be sprayed with as much water as possible. It can be repeated 2-3 times until the pesticide concentration is lower than the concentration of the pesticide. These clean waters not only wash away the drugs on the surface of the plants, but also allow the crops to absorb more water and add water to the crop cells.
The effect of the phytotoxicity is reduced because the concentration of the agent in the crop is diluted. The field where the application is excessive is to be washed and washed, and the residual drug concentration is diluted together with the water. This can be useful to reduce the degree of phytotoxicity of crops.
Remove or trim the affected organs and replant the seeds
After the phytotoxicity is present, the leaves of the damaged fruit can be trimmed and removed in time to avoid the disease caused by the infection of the dead part. For example, in the fruit tree, the methods of perfusion, injection, and dressing are often used. When the branch is more suckable, it should be removed immediately, and the drug solution should continue to be transported and soaked downwards. Immediately, the water should be poured to avoid the spread of the drug.
When applying a highly systemic insecticide, if the phytotoxicity caused by the application of the drug is too high, the damaged branches should be removed immediately. For fields where the seeds or wheat seedlings are more severely damaged, the crops should be destroyed or replanted or interplanted according to the degree of damage. If there is a serious situation that cannot be recovered due to serious misapplication, it should be completely destroyed in time. Regarding the plots where the seeds or wheat seedlings are lightly damaged in the field, in order to promote the early emergence of wheat seedlings, it is necessary to strengthen the fertilizer and water treatment in the field, and it is necessary to make up for the nitrogen fertilizer. If the soil is damaged in the middle of the plant growth period, the soil permeability should be improved in time, and artificial soil or cultivating loose soil should be carried out.
At the same time, appropriate application of phosphate fertilizer and potassium fertilizer to promote the development of plant roots.
Spray appropriate safety adjuvants to reduce phytotoxicity
When the crop phytotoxicity caused by liquid pesticide spray occurs, the symptoms of phytotoxicity appear early, and spraying a certain amount of suitable safe adjuvant at this moment can reduce the phytotoxicity of the pesticide to the crop, and then play the role of detoxification maintenance.
Such as the phytotoxicity caused by omethoate, spraying 0.2% borax solution can alleviate; the phytotoxicity caused by copper sulphate or Bordeaux mixture can be alleviated by spraying 0.5% calcium hydroxide solution; by glyphosate, 24 -Pesticide phytotoxicity caused by herbicides such as -D butyl sulfonate, imiflusulfuron, omnivorin, butachlor, etc., spraying 0.15% of Huangjia natural saponin with 5000-10000 times solution can alleviate phytotoxicity; % of soapy liquid can alleviate the phytotoxicity of organophosphorus pesticides.
Choosing the right and appropriate safe adjuvant can not only detoxify, but also promote the growth and development of plants.
Follow the quick-acting fertilizer or spray hormone remedy
Apply fertilizers such as urea to the medicinal crops to add nutrients, strengthen the growth of crops, promote early crops and accelerate crop recovery.
Herbicides and plant growth regulators that inhibit the synthesis of gibberellin in plants may be used to relieve the onset of phytotoxicity by spraying gibberellin, detoxification, etc. after the drug.
The above is a remedy for the remedies for the ultra-practical common phytotoxicity compiled by Xiaobian. I hope that many farmers will help.
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