Rainy season pays attention to eggplant blight
The Eggplant Blight Disease, also known as egg drop and rotten eggplant, is one of the most important diseases of eggplant. The rainy years and seasons often cause disasters and cause serious losses. First, the symptoms identify the disease mainly damage the fruit, most of the incidence of young fruit near the ground. In the early stage of fruit onset, water-stained round spots appeared on the surface of solanaceous fruit, and then quickly spread to the entire fruit. The diseased disease department is yellow-brown or dark brown, gradually shrinking, becoming soft, and wrinkles appear on the surface. When the humidity is high, the disease minister is full of dense white flocculent layers, and the internal pulp turns brown and decays. The fruit was later shed, and it quickly rancid on the wet ground. It also left hanging on the branches. After rot, the water lost and dried up and became dark brown and brown. Sometimes leaves and shoots can also be affected. The victim's leaves have a nearly brownish or irregularly shaped water-stained, hazel-like spot, sometimes with pronounced ring veins, and sparse white molds on the spot when wet. The stems were infected, and they were initially water-stained and dark green or purple-brown afterwards. The diseased part was collapsed and the upper leaves were wilt. Second, the incidence of disease Occurrence of eggplant Mushroom disease is closely related to the temperature and humidity. The temperature of 28~30°C and relative humidity of 85% is beneficial to the onset. The cultivation of open field in the rainy season of July and August is the epidemic period. Rainy seasons come early, rainfall is heavy, and the weather is sweltering. The onset is early and heavy, and the peak incidence is often 2 to 3 years after the peak rainfall. Big 0C days appear. Low-lying terrain, poor drainage, and soil heavy weight, partial nitrogenous fertilizer on the site of heavy onset, closed fields, poor ventilation, is conducive to the occurrence and prevalence of diseases. III. Prevention and control measures Prevention and control of eggplant ooze diseases must be based on agricultural control. 1. Select disease-resistant varieties, implement rotation-for-cultivation selection of disease-resistance varieties such as eggplant variety No. 2 and no continuous cropping. Rotation for 3 to 5 years must be implemented. 2. The selection of strong seedlings and healthy seedbeds should pay attention to the fact that in the places where the topography is high and the river is not easy to collect water, the soil will be disinfected three weeks before sowing. 3, the use of mulching mulch film covering the cultivation site preparation to prevent water accumulation. Apply base fertilizer and increase phosphorus and potassium fertilizers. Wide and narrow row planting, timely cultivating, pruning, old leaves, improve ventilation and light transmission conditions. Harvested in time, found that the disease was immediately removed and buried. 4. Strengthen field inspections to detect diseased fruit and diseased leaves. Immediately use continuous drug control. Spray 72.2% Preclosure 800 times, or 75% chlorothalonil wettable powder 500 times, or 58% metalaxyl manganese. Zinc wettable powder 500 times, or 65% zinc wettable powder 500 times.