Hawthorn root rot control method

1. Strengthen cultivation management, increase tree vigor, and increase resistance to disease. To improve irrigation and drainage facilities in orchards, so that drought can be poured and flood drainage can be achieved; soil structure can be improved to prevent soil erosion, and conditional orchards can be deep-turned. In the growing season, the cultivating grasses and cultivars shall be timely and timely cultivated; the pruning shall be reasonable, the tree fruit quantity shall be adjusted, and the phenomenon of size shall be avoided; the orchards with poor fertility shall adopt the formula fertilization technique.

2. Deal with diseased trees. In the spring and autumn, the roots were air-dried in the eucalyptus soil and the diseased part was scraped or the roots were removed. During the period of air-drying, avoid pouring water or rain in the tree points and let it dry for 7 to 10 days. After scraping the lesions, use a Bordeaux mixture or 5 Baume degrees lime sulfur or 45% crystal lime sulfur to irrigate the roots. Can also apply 50% of carbendazim 1000 times solution or 50% of Li Kuangjing wettable powder 300 times in the wound, the control effect is better.

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