Herbicides have been accepted by farmers as fertilizers. The use of herbicides can reduce labor intensity and improve field weeding effects. However, improper use can also cause undue losses to farmers due to phytotoxicity. Spring sowing, how to reduce the phytotoxicity of herbicides, farmers friends, may wish to consider the following aspects.
1. The choice of the herbicide herbicide has a strict range of use, sometimes a word difference, it may cause a major disaster. Such as: butachlor and acetochlor, bensulfuron-methyl and chlorsulfuron, although only one word, but one used in paddy fields, one used in dry fields. Rice, soybeans, corn, different types of vegetables and crops require different types of herbicides; different crops, different squat (season) crops with different growth stages, require different types of herbicides. Therefore, we must pay attention to these factors when purchasing drugs. Careful use of new varieties, must not be used for herbicides that have never been used, should first pass a small area test or see if the results of the surrounding people are safe, and then decide whether to use or not.
2. Attention to the concentration of herbicides Some farmers like to increase the concentration of herbicides. Many pesticide companies also like to recommend high-concentration pesticides to farmers. (Pesticide manufacturers can do this, one can sell more drugs, two can improve the control effect, and more pull back customers). It is very dangerous. Increasing the concentration at random can lead to phytotoxicity. For example, acetochlor can cause soybean damage, and 2,4-butyl butyl ester can cause corn phytotoxicity.
3. Attention to Drift Hazards Many phytotoxicity disputes are often caused by pesticide drift. This is because each crop has some sensitive pesticide varieties. For sensitive crops, only a small amount of herbicide can cause phytotoxicity. For example, 2,4-dibutyl acrylate droplet drift can affect grapes 100 meters away; using rice fields with quinclorac to water the vegetable field will cause vegetable phytotoxicity. There are many examples of crops sensitive to pesticides. For example, dicotyledonous plants such as grapes and soybeans are sensitive to 2,4-butyl butyrate, rice is sensitive to chlorsulfuron-methyl and lanthanide, and acetochlor is applied to cucumber, spinach, wheat and millet. , sorghum and other crops are not safe, Atrazine is not safe for vegetables, pears and peach trees.
4. Attention to the next (season) crops Some herbicides have long residual effects and have an impact on the squat (season) sensitive crops. For example, in newly opened paddy fields, vegetable plots and new greenhouses, the seedlings are not long, rotten or dead, and many are caused by the use of herbicides. Therefore, when using herbicides, it is necessary to consider what crops are to be planted in the next season (season). In the following seasons, beet, potato, melon, sorghum, rice, cotton, vegetables, etc., cannot use atrazine or chlorine. Sulfasulfuron, chlorsulfuron and the like as herbicides for the off-season crops; when sowing soybeans and wheat, the use of atrazine for the upper crops should be reduced by half. Different crops have different sensitivity to different herbicides. When selecting herbicides, we must pay attention to the impact on the lower and lower season crops. The safest and most reliable way is to consult with the agricultural technicians or pesticide companies and follow the instructions to decide which type of herbicide to use.
1. The choice of the herbicide herbicide has a strict range of use, sometimes a word difference, it may cause a major disaster. Such as: butachlor and acetochlor, bensulfuron-methyl and chlorsulfuron, although only one word, but one used in paddy fields, one used in dry fields. Rice, soybeans, corn, different types of vegetables and crops require different types of herbicides; different crops, different squat (season) crops with different growth stages, require different types of herbicides. Therefore, we must pay attention to these factors when purchasing drugs. Careful use of new varieties, must not be used for herbicides that have never been used, should first pass a small area test or see if the results of the surrounding people are safe, and then decide whether to use or not.
2. Attention to the concentration of herbicides Some farmers like to increase the concentration of herbicides. Many pesticide companies also like to recommend high-concentration pesticides to farmers. (Pesticide manufacturers can do this, one can sell more drugs, two can improve the control effect, and more pull back customers). It is very dangerous. Increasing the concentration at random can lead to phytotoxicity. For example, acetochlor can cause soybean damage, and 2,4-butyl butyl ester can cause corn phytotoxicity.
3. Attention to Drift Hazards Many phytotoxicity disputes are often caused by pesticide drift. This is because each crop has some sensitive pesticide varieties. For sensitive crops, only a small amount of herbicide can cause phytotoxicity. For example, 2,4-dibutyl acrylate droplet drift can affect grapes 100 meters away; using rice fields with quinclorac to water the vegetable field will cause vegetable phytotoxicity. There are many examples of crops sensitive to pesticides. For example, dicotyledonous plants such as grapes and soybeans are sensitive to 2,4-butyl butyrate, rice is sensitive to chlorsulfuron-methyl and lanthanide, and acetochlor is applied to cucumber, spinach, wheat and millet. , sorghum and other crops are not safe, Atrazine is not safe for vegetables, pears and peach trees.
4. Attention to the next (season) crops Some herbicides have long residual effects and have an impact on the squat (season) sensitive crops. For example, in newly opened paddy fields, vegetable plots and new greenhouses, the seedlings are not long, rotten or dead, and many are caused by the use of herbicides. Therefore, when using herbicides, it is necessary to consider what crops are to be planted in the next season (season). In the following seasons, beet, potato, melon, sorghum, rice, cotton, vegetables, etc., cannot use atrazine or chlorine. Sulfasulfuron, chlorsulfuron and the like as herbicides for the off-season crops; when sowing soybeans and wheat, the use of atrazine for the upper crops should be reduced by half. Different crops have different sensitivity to different herbicides. When selecting herbicides, we must pay attention to the impact on the lower and lower season crops. The safest and most reliable way is to consult with the agricultural technicians or pesticide companies and follow the instructions to decide which type of herbicide to use.
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