What Are the Symptoms of Fertilizer Burn in Tomatoes? Detailed Prevention and Control Measures

Tomatoes have a relatively high demand for fertilizer, so fertilizing is an important part of lighting during cultivation, but you must watch out for fertilizer burn when fertilizing. Once fertilizer burn occurs, it not only wastes fertilizer but also causes enormous damage to the growth and development of tomatoes. So what should you do when fertilizer burn occurs in tomatoes? Let's take a look at the detailed introduction below.

1. Causes

Fertilizer burn, as the name suggests, is caused by excessive fertilization, mainly by applying too much chemical fertilizer at one time. The high concentration damages the root system and reduces its ability to absorb nutrients. Because the plant lacks sufficient nutrients and water, a series of symptoms affecting growth and development appear.

2. Symptoms

In the early stage of damage, irregular gray or grayish-white spots appear on the leaves. As the condition develops, the spots expand, with a withered green center, and later the spots cause perforation of the leaves. Unlike diseases, these scorch spots will not expand endlessly, and the condition develops rapidly under high temperature and drought. When too much nitrogen fertilizer is applied, the plant can suffer poisoning from absorbing excessive ammonia. During the nitrification process of ammonia, nitrite can also accumulate, causing poisoning and symptoms such as browning of the root system and yellowing of the leaves.

3. Preventive Measures

Fertilize scientifically and reasonably. A single application should not be too large, and fertilization should be uniform. When applying high-concentration chemical fertilizers, water immediately after fertilization or apply them with irrigation water to control the fertilizer concentration. At the same time, reduce the amount of chemical fertilizer applied when fertilizing and increase the application of organic fertilizer. If conditions permit, biological bacterial fertilizer can be used as organic fertilizer, using layered application and full-depth application methods to avoid leaving fertilizer exposed on the soil surface.

4. Remedial Methods

⟦NL>When fertilizer burn symptoms appear in tomatoes, water promptly to promote root absorption of water and dilute the fertilizer solution in the plant body. At the same time, combine this with foliar spraying by spraying a large amount of clean water to dilute the high-concentration fertilizer solution on the leaf surface and reduce the damage. If the fertilizer burn is relatively severe, you can spray agents such as sodium nitrophenolate, brassinolide, and Jiehai Ling, which can promote the flow of cell protoplasm, improve cell vitality, and prompt the plant to quickly recover its vitality.

The above is an introduction to the symptoms of fertilizer burn in tomatoes and prevention and control measures. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.