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Strawberry Spring Management
In the spring, effective management of grass weeds plays a crucial role in ensuring healthy growth, early harvest, high quality, and increased yield. The following measures should be implemented:
When the average temperature of the unheated membranes stabilizes around 10°C on a daily basis, it's time to start removing the protective coverings for overwintering plants. Care must be taken to avoid damaging the flower buds during this process. If plastic mulch is used, it should be removed during the day and re-covered at night, gradually being taken off entirely. This helps prevent large temperature fluctuations that could negatively affect strawberry growth. After uncovering, promptly remove old, diseased, and yellow leaves to improve light penetration and reduce disease risk.
During spring cultivation, regular weeding and soil loosening are essential to avoid root damage and prevent soil crusting from squeezing young plants. The middle cultivation should be combined with clearing ditches and drainage channels to eliminate waterlogging. Once strawberries begin to grow, remove dry or diseased leaves immediately and bring out any infected plant material from the field to prevent disease recurrence.
Fertilization should be timely, especially in mid-to-late March. A single top-dressing with 10–15 kg of urea per mu or 20–30 kg of compound fertilizer is recommended, along with 10–15 kg of additional fertilizer. During the flowering and fruiting stages, spraying 0.3% to 3% potassium dihydrogen phosphate two or three times can significantly enhance both yield and fruit quality.
Only flowers that bloom on well-developed inflorescences produce large, mature fruits. Therefore, after budding, it's important to thin out the buds—removing 20% to 25% of weak, late-developing buds—to reduce nutrient competition, resulting in larger, more uniform fruits that mature earlier and maintain higher quality.
As pests become active in spring, underground pests such as wireworms, locusts, and grubs may begin to attack the roots and stems of strawberries. To control them, shallow tilling in early spring can help destroy eggs and larvae in the soil. Additionally, applying 200 g of 90% trichlorfon or 200–300 g of 50% phoxim emulsion diluted in 500–700 times water and watering the roots can be effective.
For diseases like leaf spot, gray mold, bud blight, and powdery mildew, early prevention is key. Spraying 50% carbendazim or 70% thiophanate methyl at a dilution of 500–800 times can help manage these issues. Viral diseases are often spread by aphids, so using 40% omethoate diluted at 800 times is an effective preventive measure. However, it's important to avoid using chemical pesticides during the fruit ripening stage to ensure safe and high-quality produce.