Causes and Control methods of Cotton Fertilizer damage

Cotton is an important economic crop in China, which has a long history and a wide planting area, but the phenomenon of fertilizer damage will occur due to improper management, which will lead to the wilting of cotton in a large area and dry up and die in serious cases. So how to prevent and cure the cotton fertilizer damage? Let's take a look.

First, the cause of fat damage

1. Partial application of nitrogen fertilizer

In production, many people think that nitrogen fertilizer can promote plant growth, so it generally appears that crop growth and development is good, the direct application of nitrogen fertilizer, nitrogen fertilizer overwintering, fertilizer damage is serious. In particular, highly volatile nitrogen fertilizer can easily lead to fertilizer damage to crops. Blind application of nitrogen fertilizer will also lead to the accumulation of nitric acid in crops, resulting in yellowing and shedding of leaves.

2. Excessive amount of topdressing

One degree should be paid attention to every time when topdressing, if the amount of fertilizer applied at one time is excessive, the fertilizer concentration of the soil will be too high, and the root system of the plant will absorb nutrients and water, thus causing fertilizer damage.

3. Apply unspoiled organic fertilizer

When applying organic fertilizer, the organic fertilizer is not fully mature, and the decomposition after application will emit a large amount of organic acid and heat, which leads to the phenomenon of root burning.

4. topdressing is too close to the root system.

Due to the fast decomposition of chemical fertilizer, if the fertilizer is applied close to the root during topdressing, the decomposition of chemical fertilizer will lead to fertilizer damage to crops.

II. Prevention and control measures

1. Rational fertilization

It is necessary to master the scientific formula when fertilizing, and the demand for fertilizer is different in each growth stage, so it is not appropriate to apply nitrogen fertilizer, especially in the middle and later stage of growth, it is necessary to increase the application of phosphorus and potassium fertilizer to promote the balanced growth of plants.

2. Do not apply as mature organic fertilizer

Organic manure must be fully mature before application, especially livestock manure can be mixed with chemical fertilizer only after accumulation and fermentation.

3. Increase the application of organic fertilizer

The application of appropriate amount of organic fertilizer during topdressing can strongly adsorb cations, so that the concentration of cations should not be too high, adjust the soil results and reduce the occurrence of fertilizer damage.

4. Pay attention to the distance between fertilizers

Fertilization should be about 10 centimeters away from the crop roots, and there is deep application, immediately after fertilization to cover the soil, so as not to burn seedlings, if the soil is dry, timely irrigation, reduce the concentration.

The above is the introduction of cotton fertilizer damage causes and control methods, hope to help you, want to know more related knowledge, please pay attention to us.