Strawberry Summer Pest and Disease Control Methods and Precautions
Applying Boron and Iron Fertilizer Can Improve Strawberry Quality. Strawberries are currently being marketed in large quantities, but as strawberries grow and fruits are harvested, farmers neglect the application of micronutrient fertilizers, and combined with unreasonable fertilization, this causes a deficiency of trace elements needed for strawberry growth, especially with boron and iron deficiency symptoms being particularly obvious, which has already affected strawberry yield...
Summer is the high-temperature season, and strawberries are in the period of vigorous runner production. Because seedling fields have high planting density and crowded plants, ventilation is often poor; some strawberry growers in non-seedling fields often neglect management of strawberry fields after fruit harvest, and combined with high summer temperatures and frequent rain, high humidity easily causes the occurrence of strawberry powdery mildew, brown spot, and leaf spot, damaging leaves and affecting photosynthesis. In addition, a moist soil environment also favors the occurrence of mole crickets, causing damage to the root system. If drought occurs during high-temperature weather, it easily triggers red spiders. For this reason, summer control of strawberry pests and diseases requires early detection and early control. The specific management measures are as follows:1. When diseased plants are found in the early stage, the diseased leaves should be cut off and burned promptly, and severely infected plants should be pulled out entirely. And treat with pesticides.
2. Clean the field, remove old leaves and yellow leaves, carry them outside the field for disposal, and strengthen ventilation in the field.
3. In non-seedling fields, runners should be removed promptly to reduce nutrient consumption. Enhance the disease resistance of the plants.
4. When topdressing in seedling fields, the amount of nitrogen fertilizer should be controlled, and some phosphorus and potassium fertilizer should be applied appropriately to prevent excessive vegetative growth of the plants.
5. When the weather is dry, pay attention to appropriate watering to avoid soil drought. After continuous rainfall, drain field water promptly to enhance soil permeability.
6. Chemical control should be carried out on the morning of a sunny day, and when spraying, both the front and back sides of the leaves should be covered. For powdery mildew control, 25% triadimefon wettable powder at 3000 times dilution can be used for spraying. 70% thiophanate-methyl at 1000 times dilution can be used to control powdery mildew, brown spot, and leaf spot. Use 40% dimethoate at 1000 times dilution, 20% fenvalerate at 3000 times dilution, or acaricide-aphidicide at 1000 times dilution to control aphids and red spiders. If mole cricket damage is found, poisoned bait can be mixed for control: use 150 ml of 90% trichlorfon at 30 times dilution, add 5 kg of half-cooked blighted grain to make poisoned grain, and scatter it where mole crickets are active.
Note that pesticides for pest and disease control should be used alternately to avoid developing resistance.