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What are the precautions for using post-emergence herbicides in corn fields?
I. 2,4-D butyl ester. (1) Causes of phytotoxicity. Applying the herbicide too late, at too high a dose, or unevenly can cause phytotoxicity. (2) Symptoms of phytotoxicity. When the herbicide is applied to the soil, the young shoots bend and the young roots grow upward, then later return to normal. When the herbicide is applied to stems and leaves, the stems become twisted, the leaves become narrower, ...
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Which herbicides work well in corn fields?
Which herbicide is best for corn? And how should it be applied? Summers are rainy, and weeds are widespread in corn fields. The main weeds include crabgrass, barnyardgrass, green foxtail, goosegrass, redroot pigweed, purslane, copperleaf, and purple nutsedge. Corn is most severely harmed by weeds at the seedling stage, so chemical weed control should...
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What to Do About Corn Herbicide Injury? Detailed Remedial Methods
What to do about corn herbicide injury? Please advise. A farmer, having missed the pre-emergence soil-applied weed control for corn, resorted to post-emergence weed control at the 3-4 leaf stage using atrazine, acetochlor and 2,4-D butyl ester. After application, on June 22, when the plants were about 1 m tall with 10-12 leaves and topdressing was being prepared, the corn was found to have...
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How to Weed a Corn Field? Practical Methods and Tips Shared
How should a corn field be weeded? Please advise. Weeding in corn fields is divided into two types: chemical weeding and manual weeding. Chemical weeding is mainly carried out after sowing and before emergence. Herbicides are mainly divided into two categories: those that kill existing weeds and those that kill weeds that have not yet emerged, and they are generally used in combination. Representative herbicides for killing existing weeds include Gramoxone...
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How to correctly use herbicides on corn in summer?
How should herbicides be used on corn in summer? Please provide guidance. The growth period of summer corn is from June to September, which coincides with the high-temperature and rainy season, favoring the occurrence and damage of field weeds. Once the proper control period is missed, it is very easy for weeds to run wild, seriously affecting corn growth. Chemical weeding is an important measure for controlling weed damage in corn fields and increasing corn yield...
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How to choose herbicides for corn at sowing time in a scientific way
How to choose herbicides for corn at sowing time? Please advise. Weeds occur commonly and in great variety in corn fields. Among them, the Huang-Huai-Hai region is the largest corn-producing area in China, mainly growing summer corn. In this region, crops are grown twice a year, mostly in corn-wheat rotation, and there is also relay intercropping of corn with soybean, peanut, etc. The main weeds in this region...
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What should be noted when using chemical herbicides in corn fields?
What should be noted when using chemical herbicides in corn fields? Please advise on the following issues to note when using chemical herbicides in corn fields: 1. Improper selection of variety. Different herbicide varieties have different control effects on weeds. Some farmers do not understand chemical herbicides and mistakenly believe some casual claims, thinking that any herbicide can control weeds, result...
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What precautions should be taken for chemical weed control in corn fields?
What should be noted when using chemical weed control in corn fields? Please explain. Currently, chemical weed control in corn fields accounts for about 70% of the corn planting area. Most of the herbicides used in production are atrazine plus acetochlor or their compound formulations. However, because atrazine has a long residual effect and poses a threat to the safety of subsequent crops, it is not...
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How to Prevent and Control Herbicide Damage in Corn Fields
How do you prevent and control herbicide damage in corn fields? Please advise. You can refer to the following methods for preventing and controlling herbicide damage in corn fields: 1. Causes of herbicide damage. The safety of herbicides to crops is relative; only when used reasonably and as directed are they safe to crops. In corn production, herbicides may cause damage for a variety of reasons...
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What precautions should be taken when applying herbicides to corn seedlings?
What should be noted when applying herbicides to corn seedlings? Here is an introduction to chemical weed control technology in corn fields, which saves labor, saves effort, requires low input, and delivers high benefits. In recent years, the area where post-emergence herbicides for corn are applied in China's corn-producing regions has been expanding year by year. Because some applicators lack adequate application skills, some fields have experienced herbicide damage of varying degrees and...
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