How to prevent green celery rot disease

Rotten heart disease can occur in the entire growth period of celery, but the incidence of severe seedling stage. Early onset, can cause bad species, uneven emergence. The seedlings were infected after unearthing, and most of them showed growth spots or browning of the heart, necrosis, and dry rot, which spread from the heart leaves to the outer leaves. At the same time, they expanded from the roots to the roots, which resulted in browning and necrosis of the root tissues. The growth of the roots is not normal, and the diseased seedlings stop growing, resulting in the formation of inadvertent seedlings or clustered shoots. In severe cases, the diseased seedlings are necrotic and the quality of the vegetables is reduced. Onset of light, with the growth of seedlings in the young and adult stages continue to develop, so that some young petiole necrosis from bottom to top brown, and finally rot. The main conditions for the disease are: there are many opportunities for the emergence of seeds for planting bacteria, and the incidence rate is high. The high temperature of the soil in the greenhouse will cause severe diseases.

The main preventive measures are:

1. Chemical seed dressing. Prior to sowing, seed dressings should be seeded with 47% Garneton WP with a seed weight of 0.3%, or soaked with a 47% Garnett WP 400-fold for 20-30 minutes, and then sown.

2. Chemical control. In the early stage of disease, the diseased seedlings were removed and sprayed with liquid medicine in time for prevention and treatment. 77% can be used to kill the WP 500 times, or 30% Luoyang copper water agent 350 times, or agricultural streptomycin 500 times can be sprayed.

3. Remove the diseased seedlings. For rotten heart disease caused by necrotic diseased seedlings, it should be promptly removed and treated outside the shed to prevent the disease from continuing to spread, resulting in reduced production.

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