Pink disease is mainly harmful to tomato fruit and it can also harm the leaves. During the production process, excessive irrigation, excessive humidity, and lack of timely release of the powder cause disease. Tomato planting dense, partial nitrogen fertilizer can cause serious disease. Cultivation of tomatoes in greenhouses is usually from February to April. At this time, the temperature is high, the illumination is insufficient, and the ventilation is poor. The most common cause of pinkish pink disease is usually the disease of the lower middle part of the fruit. The peduncle of the diseased fruit develops a water-stained lesion, which turns brown to dark brown, does not sag, gradually expands and surrounds the fruit pedicle, and can later spread to the entire fruit surface. When the humidity is high, a dense layer of white mold can be produced, and soon a layer of velvety light pink mold layer grows on it, and the diseased fruit eventually rots. To prevent the occurrence of tomato pink disease, it should be under the premise of guaranteeing the proper temperature for tomato growth. In order to keep the soil moist and water content low, we should take drip irrigation and watering under the membrane. To cultivate tomato in protected areas, the planting density should be about 3300 plants per acre to avoid planting too dense. During the growth process, pruning and squatting should be timely and the old leaves should be removed at the appropriate time. Shed room should be strengthened to release air and humidity so that the relative humidity is lower than 85%. If the disease has not yet grown pink mold layer, remove the disease, put it in a plastic bag and take it out of the shed. Before the onset of illness, 50% Prochloraz Manganese Salt Wettable Powder 1000-1500 times or 10% difenoconazole water dispersible granules 2000 times, 72% cymoxanil Manganese Zinc Wettable Powder 800 times, 3% multi-resistance WP wettable powder 300 times, 20% chlorhexone suspension 600 times, 50% carbendazim WP 500 times, 40% polysulfide suspension 600 times spray control, 7 Spray once every 10 days, spray 2 or 3 times, and stop using the drug 7 days before harvesting. At the beginning of the disease, fuming chlorothalonil aerosol or powder spray 10% chlorothalonil dust, 1.5 kg per 1,000 square meters.
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