After the end of October, the temperature dropped, rainy days, and the incidence of diseases and insect pests also increased, and farmers should pay attention to the prevention and control of the following four diseases.
1. Powdery mildew produces irregular shape and shape of white powdery mildew on the leaf surface, spreading throughout the entire leaf surface, causing the leaves to turn yellow and dry. At the beginning of the disease, spraying 15% triadimefon (triadimefon), wettable powder 1000-1500 times, 20% triazole-copper 2000-fold, 36% thiophanate-methyl suspension 500-600 times, and other agents.
2. Verticillium wilt disease often begins to exhibit symptoms after fruit set and grows from bottom to top or from side to side. At the beginning, the leaves turn yellow between the leaf margins and veins, and then develop to half of the leaves or the whole leaf turns yellow. The early disease leaves are wilting at sunny high temperatures and can be recovered sooner or later. The late-stage disease leaves turn yellow from yellow and eventually causes wilting. Even falling off, when the whole plant leaves browning sagging and even leaving bare stems. The disease is a plant-wide disease. The roots, stems, branches, and petioles of the diseased plants can be seen as browning, but the above-mentioned cross-sections are squeezed and there is no milky-white turbid fluid leakage. This is different from Bacterial wilt. After the onset of disease, the roots were irrigated with 600-fold chlorothalonil and 500-fold carbendazim mixture and 500 g per plant.
Thirdly, at the leaf edge of gray mold, water-soaked large spots are formed first, followed by browning, forming an elliptical or nearly circular yellowish rhinophyte spot with a diameter of 5 to 10 mm, densely covered with gray mold layer, and severe large-spotted patches. The whole leaf is dry. Stain and petiole disease can also produce brown lesions, and when the humidity is high, gray mold grows. The fruit was infected, and the young fruit around the fruit peduncle first produced a brownish brown lesion. After the expansion, it was dark brown and rotted and rotted. The surface of the young fruit had irregular round gray mold and lost its food value. The protected land can be applied with 10% fasting smoke agent, 250g/mu each time, or 5% chlorothalonil dust agent, 1kg/mu each time; it can also be sprayed with 50% quickan WP at the early stage of disease. 1500 ~ 2000 times solution or 50% nongrilled WP 1000 times or 36% thiophanate-methyl suspension 500 times. It should be noted that when eggplants are drunk, 0.1% of 50% Skoda WP or 50% acetaminophen WP or 50% NR WP is needed for growth hormone.
Fourth, the symptoms of Mianbing disease Mianbing disease is the Ministry of disease surface grow thick white cotton flocculent hyphae, rapid expansion, the disease quickly fell to the ground. At the beginning of the disease, spray 75% chlorothalonil wettable powder 500 to 600 times, 40% ethoxyphos aluminum wettable powder 200 times, 72.2% Proccel water 700 to 800 times, 64% antivirus WP 500 times Liquid, 14% ammonia solution of copper and other 300 times liquid and other control, every 7 to 10 days spray 1, even prevention 2 to 3 times, while paying attention to spray protection of fruit.
1. Powdery mildew produces irregular shape and shape of white powdery mildew on the leaf surface, spreading throughout the entire leaf surface, causing the leaves to turn yellow and dry. At the beginning of the disease, spraying 15% triadimefon (triadimefon), wettable powder 1000-1500 times, 20% triazole-copper 2000-fold, 36% thiophanate-methyl suspension 500-600 times, and other agents.
2. Verticillium wilt disease often begins to exhibit symptoms after fruit set and grows from bottom to top or from side to side. At the beginning, the leaves turn yellow between the leaf margins and veins, and then develop to half of the leaves or the whole leaf turns yellow. The early disease leaves are wilting at sunny high temperatures and can be recovered sooner or later. The late-stage disease leaves turn yellow from yellow and eventually causes wilting. Even falling off, when the whole plant leaves browning sagging and even leaving bare stems. The disease is a plant-wide disease. The roots, stems, branches, and petioles of the diseased plants can be seen as browning, but the above-mentioned cross-sections are squeezed and there is no milky-white turbid fluid leakage. This is different from Bacterial wilt. After the onset of disease, the roots were irrigated with 600-fold chlorothalonil and 500-fold carbendazim mixture and 500 g per plant.
Thirdly, at the leaf edge of gray mold, water-soaked large spots are formed first, followed by browning, forming an elliptical or nearly circular yellowish rhinophyte spot with a diameter of 5 to 10 mm, densely covered with gray mold layer, and severe large-spotted patches. The whole leaf is dry. Stain and petiole disease can also produce brown lesions, and when the humidity is high, gray mold grows. The fruit was infected, and the young fruit around the fruit peduncle first produced a brownish brown lesion. After the expansion, it was dark brown and rotted and rotted. The surface of the young fruit had irregular round gray mold and lost its food value. The protected land can be applied with 10% fasting smoke agent, 250g/mu each time, or 5% chlorothalonil dust agent, 1kg/mu each time; it can also be sprayed with 50% quickan WP at the early stage of disease. 1500 ~ 2000 times solution or 50% nongrilled WP 1000 times or 36% thiophanate-methyl suspension 500 times. It should be noted that when eggplants are drunk, 0.1% of 50% Skoda WP or 50% acetaminophen WP or 50% NR WP is needed for growth hormone.
Fourth, the symptoms of Mianbing disease Mianbing disease is the Ministry of disease surface grow thick white cotton flocculent hyphae, rapid expansion, the disease quickly fell to the ground. At the beginning of the disease, spray 75% chlorothalonil wettable powder 500 to 600 times, 40% ethoxyphos aluminum wettable powder 200 times, 72.2% Proccel water 700 to 800 times, 64% antivirus WP 500 times Liquid, 14% ammonia solution of copper and other 300 times liquid and other control, every 7 to 10 days spray 1, even prevention 2 to 3 times, while paying attention to spray protection of fruit.
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