The Causes of Corn Sheath Blight and Control Methods

1. Symptoms:

Main damage corn sheath, fruit spot is round or irregular shape, light brown, water immersion, disease, health department boundary blurred, lesions contiguous healed into larger moire plaques, the middle is light yellow or withered White, edge brown. When the humidity is high, the lush mycelium can be seen at the site of the disease, and then a small white pompon is formed and gradually turns into a brown sclerotia. Occasionally mottled lesions appear in the base of the stem. The stems of diseased plants are soft and disintegrated.

2. The law of onset:

The sclerotium is overwintering in the soil and infects corn in the second year. It first develops on the leaf sheath of the stem base of the corn and gradually develops upwards and four weeks. It generally begins to develop at the jointing stage of the corn. The disease develops quickly during the tasselling stage, and the damage is heavy during the toxoplasma filling stage. . The corn is planted with flails, and the incidence is heavy; the water, fertilizer and density are high; the humidity in the field is large, the air and light are poor, and the incidence is heavy. The number of precipitations in July and August is high, and the rainfall is large, which is easy to induce damage.

3. Control measures:

1. Planting disease-resistant varieties with moderately sized and upwardly sloping varieties have good ventilation and light transmission, and the incidence is light.

2. Strengthen the cultivation and management of reasonable fertilization, to avoid partial nitrogen fertilizer, reasonable irrigation and drainage, reduce the humidity in the field, and improve the resistance to disease. In the initial stage of disease, the diseased leaf sheath is removed from the lower parts of the corn plants, which can reduce the incidence.

3. Chemical control In the initial stage of disease, use 5% Jinggangmycin 100-150ml/mu, 20% powder 25g/mu or 150g/100ml/water, and add water 50-60kg stem and leaf spray.

Active Pharmaceutical Ingredients

Active Pharmaceutical Ingredients(API) refer to the raw materials used in the production of various preparations. They are the effective ingredients in the preparations. They are various powders, crystals, extracts, etc., prepared by chemical synthesis, plant extraction or biotechnology, but Substances that the patient cannot take directly. API is intended to be used in any substance or mixture of substances in the manufacture of pharmaceuticals, and when used in pharmaceuticals, it becomes an active ingredient of the pharmaceuticals. Such substances have pharmacological activity or other direct effects in the diagnosis, treatment, symptom relief, treatment or prevention of diseases, or can affect the function or structure of the body. According to its source, active pharmaceutical ingredients are divided into two categories: synthetic chemical active Pharmaceutical ingredients and natural chemical active Pharmaceutical ingredients.

Chromium Picolinate,Tianeptine,6-Paradol,Aminobutyric acid,acetylcysteine,L-Carnosine

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