Detailed Explanation of Key Points of Cotton Seed Coating Technology

As temperatures gradually rise, spring plowing and sowing preparations get underway, and cotton planting also moves into seed selection, sunning of seeds and coating work. Cotton seed coating can promote seed rooting and sprouting and stimulate plant growth, and it is an important measure for preventing pests and diseases and ensuring full stands and strong seedlings. So how is cotton seed coating carried out? Let's take a look together.

I. Effect of seed coating agents on cotton seeds

There are currently quite a few seed coating agents on the market, and you can reasonably choose one according to local pest and disease damage and the seed variety. Its main function is to prevent and control cotton seed rot, sprout rot and seedling-stage diseases, and it can significantly increase the field emergence rate. Although seed coating can prevent and control pests and diseases and raise the emergence rate, you must pay attention to the timing of seed coating, because tests have proven that after seed coating there is a trend toward a lower germination rate. The germination rate of seeds coated on the same day of storage is noticeably lower than that of uncoated seeds, but the effect on healthy seeds from coating treatment is very small, only about 1%.

II. Precautions for use

1. Choose healthy seeds for coating

When coating, you must choose seeds with a high germination rate, a low broken-seed rate and plump grains. If unhealthy seeds are chosen, the effect on the germination rate after coating will be relatively large, while the effect on the germination rate of healthy seeds after coating will be relatively small, so before seed coating you must carry out manual seed selection.

2. Mechanical coating

To achieve uniform seed coating, it is recommended to choose mechanical coating, and the loss to seeds is also relatively low. When coating, strictly follow the pesticide-to-seed ratio recommended by the product for seed dressing to improve uniformity and seed dressing quality.

3. Lay down cloth for drying

After coating, cotton seeds increase in moisture content by about 3%, and at this point they need to be dried until the moisture content is below 12% before they can be bagged for seed dressing. When sunning seeds, it is strictly forbidden to sun them directly on concrete ground; be sure to lay down cloth to avoid high temperatures burning the seeds and reducing seed quality.

4. Complete coating as early as possible

Seed coating work is best completed 10 days before sowing. After drying, bag and store them, and store for more than 10 days before sowing to improve the emergence rate.

5. Understand the function of the coating

Coating machines currently on the market generally have a fungicidal effect. For example, fu-jia seed coating agent only has a fungicidal effect and no insecticidal effect, so farmers are reminded that when buying seed coating agents, they must understand its function.

The above is an introduction to cotton seed coating technology. I hope it can help you. If you want to learn more related knowledge, please follow us.