How to weed corn during the seedling stage? Master these tips for good results

Weeds in corn fields not only affect the growth of corn, but also compete with corn seedlings for water and nutrients, seriously affecting corn growth and even inducing and worsening pest and disease damage. So how should you weed in corn fields? Come with the editor and take a look at these corn seedling stage weeding tips.

1. Weed corn early

First, weed corn early, and try to control weeds as soon as possible before they emerge. If weeds grow beyond 3 leaves, the best control period will be lost, and the efficacy will often decline, failing to achieve the expected effect. Using herbicides at this time has two reasons: first, weeds have low resistance and are very easy to kill; second, in the early seedling stage, control is relatively safer and basically will not affect seedling growth and development. Herbicides must be applied at the correct weeding period. The ideal period for control is at 3-5 leaves, or between the 3-leaf stage of weeds. Only by carrying out correct control during this period can weed growth be effectively controlled, and only by properly mastering the weeding period can the best control effect be achieved.

2. The herbicide dose should be moderate

Herbicides are more or less effective against corn seedlings, so when using herbicides, pay attention to the dosage to reduce harm to the seedlings. If the dosage is too high, phytotoxicity is very likely to occur, causing corn seedling death; if the dosage is too low, the weeding effect will not be achieved. When weeding, be sure to spray strictly according to the instructions. For seedling stage soil treatment herbicides, generally 150-200 grams per mu; for post-emergence herbicides, generally 80-150 grams per mu.

3. Ensure soil moisture

Soil temperature and humidity are key to ensuring efficacy. Applying the herbicide after rain during the seedling stage can ensure the herbicide quickly reaches the main area absorbed by weeds. When the soil is relatively moist, the sprayed solution easily forms a chemical film on the soil surface, and once weeds germinate and emerge, they have the opportunity to contact and absorb the solution, thereby killing the weeds. In drought, the solution is easily volatilized, and the effective ingredients cannot be ensured to spread and form a film, seriously affecting the weeding effect.

4. Precautions for mixing the herbicide

When mixing the herbicide, be sure to dilute it twice. Do not mix water and herbicide directly, especially powdered herbicides. After choosing a certain amount of water, first mix a small amount of water evenly with the herbicide, then add the remaining water, stir evenly, and then spray. This avoids uneven mixing of water and herbicide, which leads to uneven distribution of herbicide concentration, resulting in a weeding effect where weeds die in one patch sprayed with herbicide while weeds continue to grow in another patch sprayed with water.

The above is an introduction to corn seedling stage weeding tips. I hope it can help you. To learn more related knowledge, please stay tuned to us.