Prevention and control of common diseases of celery: symptoms of celery heart rot / leaf edge rot, prevention and control of celery heartburn

Celery heartburn is a common physiological disease in celery planting, which is mainly caused by plant calcium deficiency and serious heart leaf fertilizer, which seriously affects the quality and yield of celery. Reduce the income of farmers. So how to prevent celery heartburn? Let's take a look at the detailed introduction.

1. Heartburn symptoms

Heartburn also requires heart rot, which mainly harms the heart leaves. The growing point of the heart leaves turns brown when the disease occurs, and then gradually expands to cause the heart leaves to wither and scorch. With the development of the disease, the roots and stems of celery will die one after another. This phenomenon is rarely seen at the early stage of growth, mainly when the plant has 11-12 leaves and heart leaves.

2. The cause

At this time, one of the three physiological diseases of celery growth is mainly due to the lack of calcium in the plant and the lack of calcium and boron in the soil, which leads to the lack of these; when the concentration of salt in the soil is high, it will affect the absorption of calcium by celery roots; in addition, when the soil is too dry, the partial application of nitrogen fertilizer will also inhibit the absorption of calcium by the root system, all of which may cause celery heartburn. After heartburn occurs, if you encounter a humid environment, the heart leaves will be infected and rot.

3. Prevention and control methods

It is necessary to adopt scientific formula fertilization and reasonably regulate the content of nitrogen, phosphorus, potassium and other trace elements in the soil to ensure the balance of plant nutrients. Choose high dry non-saline-alkali land for planting, should not flood irrigation, should apply more farm manure or organic fertilizer, less chemical fertilizer, and do a good job of cooling measures in the period of high temperature. When raising seedlings, the soil should be disinfected strictly, remove diseased leaves or diseased plants in time, take them out of the field and burn them, spread quicklime on the disease points, and spray low concentration calcium nitrate solution.

The above is the introduction of celery heartburn prevention and control methods, hope to help you, want to know more related knowledge, please pay attention to us.