How to Remove Weeds During the Corn Seedling Stage? A Detailed Guide to the Latest Practical Tips

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 triggering and worsening pest and disease damage. So how should weeds be removed from corn fields? Follow along with the editor to learn weed removal tips for the corn seedling stage.

1. Corn weed removal should be done early

First of all, corn weed removal should be done early, and control should be achieved as close as possible before the weeds emerge from the soil. If the weeds grow beyond 3 leaves, the optimal control period will be lost, and the efficacy of the herbicide will often decline, failing to achieve the expected effect. There are two reasons for using herbicides at this time: first, the 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 the growth and development of the seedlings. With herbicides, the correct weeding period must be mastered. The ideal period for control is when the corn has 3-5 leaves, or when the weeds have 3 leaves. Only by carrying out correct control during this period can weed growth be effectively controlled, and only by properly grasping the weeding period can the best control effect be achieved.

2. The herbicide dosage should be moderate

Herbicides are more or less effective against corn seedlings, so when using herbicides, attention should be paid to the dosage of the chemical to reduce the harm of the herbicide to the seedlings. If the dosage is too high, phytotoxicity is very likely to occur, causing the death of corn seedlings; while if the dosage is too low, the weeding effect will not be achieved. When removing weeds, we must spray strictly according to the instructions. For soil treatment type chemicals at the seedling stage, generally 150-200 grams per mu, and after emergence, generally 80-150 grams per mu.

3. Ensure soil moisture

Soil temperature and humidity are the key to ensuring efficacy. Applying the chemical after rain during the seedling stage can ensure that the chemical is quickly absorbed mainly by the weeds. When the soil is relatively moist, the actually sprayed solution can easily form a chemical film on the soil surface. Once weeds germinate and emerge, they will have the opportunity to contact and absorb the solution, thereby killing the weeds. During drought, the solution is easily volatilized, and it cannot be ensured that the effective ingredients of the solution spread to form a film, seriously affecting the weed removal effect.

4. Precautions for mixing chemicals

When mixing chemicals, secondary dilution must be carried out. Do not mix water and chemical directly, especially for powder-type chemicals. On the premise of choosing a certain amount of water, first mix a small amount of water evenly with the chemical, then add the remaining water, stir evenly, and spray, so as to avoid uneven mixing of water and chemical, which leads to uneven distribution of chemical concentration and results in a weed removal effect where weeds die in one patch that was sprayed with chemical, while weeds continue to grow in another patch that was sprayed with water.

The above is an introduction to weed removal tips for the corn seedling stage. We hope it can help you. To learn more related knowledge, please stay tuned to us.