Control methods: 1, to strengthen the cultivation and management. Strawberries grown in greenhouses should be ventilated frequently to reduce the humidity in the greenhouse. At the same time, water should be applied in an appropriate amount to keep the soil moist. 2, chemical control. At the onset of illness, it can be sprayed with 50% Kombat Zinc 700x or 65% Zinc Zinc 800x. To prevent contamination of the fruit, the pesticide should be applied after each fruit harvest.
Fruit rot disease. The disease can develop on flowers, young fruit, large fruits and mature fruits. At the onset of young fruit, dark brown spots appeared on the fruit surface. After the gradual enlargement, the lesions were brown on the edge and slightly sunken in the middle. In later stages, the fruit rots partially or completely. Rain and snow, high humidity, severe low temperatures or high incidence. Especially when the soil moisture is high, the fruits near the ground not only have high morbidity, but also have serious damage.
Control methods: 1, to strengthen the cultivation and management. When the young fruit begins to form, regardless of whether it is cultivated in the open field or under protected cultivation, the amount of watering should be properly controlled. When rain and snow occur for a long time, the drainage ditch should be started around the cultivation area so that the clear water discharges quickly and the dark water drains off. Reducing soil moisture can greatly reduce the incidence of near-surface fruits. When harvesting, it was found that the diseased fruit should be removed in time and brought out of the field for disposal. It should not be thrown in the field. 2, chemical control. At the time of onset of illness, 50% of Fomex 600x, or 65% of Kedistan 400x can be sprayed, and the efficacy can reach above 95%.
Strawberry leaf curl insect. The newly hatched larvae first crawl on the foliage or on the back of the leaves. When the larvae age slightly larger, the leaf larvae are lashed and the green larvae latently damage the leaves, causing the leaves to curl. When the leaves are eaten, they are transferred to Neighboring leaves are reticulated.
Control methods: to control this worm, it is necessary to grasp the larvae at the beginning of hatching, the food intake is small, the drug resistance is weak, and the favorable timing before the net is sprayed. The agents with better effects are: 90% crystal trichlorfon 1200 times, or 25 enemy kills, 20% fast killing 2500 times, or 20% chlormethrin EC 2000 times. If it is controlled more than 2 times, the drugs should be used interchangeably to improve the control effect. In order to reduce the contamination of the fruit, it is advisable to apply the pesticide after harvesting the fruit or to stop spraying it 7 days before harvesting. Http://Content/9f3b3578-585d-4865-b707-cb6da37a016f?cType=2
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