Summer Defense Strawberry Diseases and Pests

April 14 02:01:27, 2021

In summer, when the high temperature season is in progress, strawberries are in the turfgrass stage. Because the planting density is high and the plants are crowded, the nursery is often crowded with poor ventilation. Some strawberry growers in non-raising seedling fields often manage the strawberry fields after harvesting them. With the high temperature and rain in summer, the humidity is high, which can easily cause the occurrence of strawberry powdery mildew, brown spot, and leaf spot, causing leaf damage and affecting photosynthesis. In addition, the moist soil environment is also conducive to the occurrence of earthworms and harm the root system. If a drought occurs in hot weather, it is easy to cause spider mites. For this reason, for the prevention and control of strawberry pests and diseases in the summer, early detection and early prevention and control are needed. Specific management measures are as follows:
1. When the diseased plants are found at the initial stage, the diseased leaves should be promptly cut off and burned, and the whole plant should be removed from the diseased plants. And treated with medicaments.
2. Clean the pastoral areas, remove old leaves and yellow leaves, carry them out of the field, and strengthen ventilation in the field.
3. Non-raising seedling fields should be timely removed stems, reduce nutrient consumption. Increase plant resistance to disease.
4. The nursery field should control the amount of nitrogen fertilizer when applying topdressing, and apply some phosphorus and potassium fertilizers appropriately to prevent plant growth.
5. When the weather is dry, pay attention to proper watering and avoid soil drought. After the continuous rainfall, the water in the field was eliminated and the soil permeability was enhanced.
6. Chemical control should be selected in the morning of sunny days, spraying the positive and negative sides of the blade. Powdery mildew control can use 25% triadimefon 3000 times spray. 70% thiophanate-methyl 1000 times can be used to control powdery mildew, brown spot and leaf spot. With 40% dimethoate 1000 times, 20% cypermethrin 3000 times solution or 1000 times aphid control aphids, spider mites. Found maggot harm, can be mixed bait prevention, with 90% 30 times trichlorfon 150 ml, add semi-cooked gluten 5 kilograms, made poison Valley, sprinkle in the locust activity.
Attention should be paid to the use of pesticides for the control of pests to avoid drug resistance.

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