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Red meat honey grapefruit autumn management
In the fall, the roots of red-fruited pomelo, along with the long autumn shoots and the fruit itself, undergo rapid growth. As the season progresses, water and sugar accumulate in the saccharomyces cells, making the fruit plump and sweet. During this critical phase, any damage from pests, diseases, heavy rain, or drought can significantly affect the size, quality, and yield of the pomelo. Therefore, it's essential to implement timely and effective autumn management practices to ensure high-quality fruit production and a bountiful harvest.
First, apply autumn shoot fertilizer at the right time. Before the "big summer" period, for every 100 kilograms of fruit produced, apply 3 kilograms of urea and 2 kilograms of potassium fertilizer to support strong fruit development and vigorous shoot growth. After the "big summer" and before the "White Dew" festival, avoid fertilizing, as more than 80% of the nutrients needed have already been supplied in the first half of the year. This helps reduce fruit cracking. From "White Dew" to "Autumn Equinox," apply fertilizer twice, using 2 kg of urea and 0.5 kg of potassium per 100 kg of fruit. This promotes fruit sweetness and supports flower bud differentiation, laying a solid foundation for future yields.
Second, manage water, pests, and diseases effectively. Autumn often brings typhoons, which bring heavy rain and warm, humid conditions—ideal for disease spread. Mid-September is also the second peak for red spider infestations. Strengthen garden management by preparing for floods and ensuring proper drainage. If possible, spray preventive pesticides before the typhoon arrives to minimize damage.
During periods of prolonged heat and drought, keep the ground free of weeds and avoid excessive cultivation. In well-watered orchards, use sprinklers or irrigation to maintain soil moisture, preventing fruit cracking, sunburn, and excessive lignification. These measures help improve both the quality and yield of the pomelo.
Third, focus on pest and disease control. Timely intervention is crucial for maintaining fruit quality and yield. Here are some key strategies:
1. Red spider: Spray 3000 times diluted solution of full grams in mid-September.
2. Rust mites: From August to September, spray 80% dexamethasone zinc at 500 times and 1000 times ammonium phosphite solution.
3. Greasy spot: Apply 80% dexamethasone at 500 times mixed with Jinggangmycin at 500 times, 1–2 times during August to September.
4. Ring disease: Spray thiophanate-methyl and Jinggangmycin at 500 times, 1–2 times between August and September.
5. Leafhoppers: Spray dipterex at 800 times in early September.
6. Aphids: Spray 2500 times thiazole or 2000 times gentian treasure in late August or early September. For young shoots, spray every 5–7 days starting when they reach 0.5 cm, for 3–4 applications.
Proper autumn care not only enhances fruit quality and yield but also sets the stage for a successful harvest the following year. Taking these steps ensures that your pomelo trees remain healthy and productive throughout the season.