Selection of herbicides during corn sowing
2022-10-27 10:08:53
Weeds in corn fields are common and varied. The Huanghuaihai area is the largest corn producing area in China. It is mainly planted in summer. The crops in this area are planted twice a year, mostly for corn and wheat rotation, as well as corn, soybeans and peanuts. The main weeds in this area are crabgrass, purslane, goosegrass, field convolvulus, alfalfa, teff, and fragrant aconite. The area of ​​corn field damage accounts for 82% to 96% of the planted area, of which medium damage The area is 66%.
In the corn sowing period, 72% metolachlor (such as Jinduole, Jindubao), 90% acetochlor (such as Fengsite, Fengdi high) and other amide herbicides can be used. It is best to seal the soil immediately after sowing, which can effectively prevent the germination of various annual grass weeds. Thiosulfuron-methyl and oxazinone are herbicides with good sealing effect on broadleaf weeds before corn seedlings, which can be used to block the germination of annual broadleaf weed seeds. Gramineous weeds and broadleaf weed mixed fields can be used to prevent annual weeds and broadleaf weeds from atrazine, which is superior to grass weeds in controlling broadleaf weeds. Atrazine can be used for post-emergence soil treatment after corn sowing, and can also be used for post-emergence stem and leaf treatment. However, due to its long-lasting effect period, if the active ingredient per acre is more than 133 grams, the crop in the cold regions of the north will be It is not possible to grow sensitive crops such as wheat, soybeans, and millet. In order to improve the sealing effect on grass weeds and reduce the dosage of atrazine, it is generally recommended to use an amide herbicide in combination with atrazine. Jiner Yufengbao, Jiner Yujing, Jineryu Nongxi, etc. are such mixed products.
Its dosage of 220~250 ml per mu has a good sealing effect on grass weeds and broadleaf weeds, and it is safe for the crops. The following formula can also be used: 90% acetamino 40-60 ml per acre plus 38% atrazine 75-100 ml; 72% metolachlor 75-100 ml per acre plus 38% atrazine 75~100ml; use 90% acetochlor 40~60ml or 72% metolachlor 75~100ml per acre and 1.25~1.5g of 75% thifensulfuron dry suspension.
When the herbicide is used for the above-mentioned closed treatment, the low temperature during the application period, the unevenness of the ground, the accumulation of water, the late application period, and the excessive application amount may cause different degrees of phytotoxicity. If the soil moisture is poor when applying the medicine, it should be applied after watering.
From: Henan Science and Technology News
In the corn sowing period, 72% metolachlor (such as Jinduole, Jindubao), 90% acetochlor (such as Fengsite, Fengdi high) and other amide herbicides can be used. It is best to seal the soil immediately after sowing, which can effectively prevent the germination of various annual grass weeds. Thiosulfuron-methyl and oxazinone are herbicides with good sealing effect on broadleaf weeds before corn seedlings, which can be used to block the germination of annual broadleaf weed seeds. Gramineous weeds and broadleaf weed mixed fields can be used to prevent annual weeds and broadleaf weeds from atrazine, which is superior to grass weeds in controlling broadleaf weeds. Atrazine can be used for post-emergence soil treatment after corn sowing, and can also be used for post-emergence stem and leaf treatment. However, due to its long-lasting effect period, if the active ingredient per acre is more than 133 grams, the crop in the cold regions of the north will be It is not possible to grow sensitive crops such as wheat, soybeans, and millet. In order to improve the sealing effect on grass weeds and reduce the dosage of atrazine, it is generally recommended to use an amide herbicide in combination with atrazine. Jiner Yufengbao, Jiner Yujing, Jineryu Nongxi, etc. are such mixed products.
Its dosage of 220~250 ml per mu has a good sealing effect on grass weeds and broadleaf weeds, and it is safe for the crops. The following formula can also be used: 90% acetamino 40-60 ml per acre plus 38% atrazine 75-100 ml; 72% metolachlor 75-100 ml per acre plus 38% atrazine 75~100ml; use 90% acetochlor 40~60ml or 72% metolachlor 75~100ml per acre and 1.25~1.5g of 75% thifensulfuron dry suspension.
When the herbicide is used for the above-mentioned closed treatment, the low temperature during the application period, the unevenness of the ground, the accumulation of water, the late application period, and the excessive application amount may cause different degrees of phytotoxicity. If the soil moisture is poor when applying the medicine, it should be applied after watering.
From: Henan Science and Technology News
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