Schisandra root rot, commonly known as bad ankle and neck disease, is one of the major diseases in Schisandra cultivation. At present, the area of ​​the disease is more common and the damage is more serious. The disease usually occurs from early May to early August. At the onset of onset, the epidermis at the junction of the root and the ground (root and neck position) became dark, and the cortex rotted and fell off. The ring formed and the leaves wilted. The entire plant died a few days later, and the cause of the disease was related to physiological diseases. In the early spring and late autumn, the surface of the ground changes drastically and the temperature difference is large. The tissue in the root and neck position is soft, the resistance to disease is reduced, and the cortex is infected with frozen bacteria, which will cause rot. The incidence of heavy soils and heavy soils with heavy muddy water, heavy growth, and poor vegetative maturity are more serious.
Control methods: 1 Select high-drying, not low-lying water loam soil, sand soil cultivation of Schisandra. 2 Strengthen comprehensive management, apply more organic fertilizer, and pay attention to drainage during the rainy season. In the autumn, about 30 centimeters of thick soil is cultivated in the root before freezing to prevent freezing of the root and neck. 3 Less damage to roots and plants during production. 4 At the beginning of the disease, use 50% carbendazim WP 500 times solution to irrigate the roots, or use 30% soil bacteria to eliminate the water agent to irrigate the roots.
Control methods: 1 Select high-drying, not low-lying water loam soil, sand soil cultivation of Schisandra. 2 Strengthen comprehensive management, apply more organic fertilizer, and pay attention to drainage during the rainy season. In the autumn, about 30 centimeters of thick soil is cultivated in the root before freezing to prevent freezing of the root and neck. 3 Less damage to roots and plants during production. 4 At the beginning of the disease, use 50% carbendazim WP 500 times solution to irrigate the roots, or use 30% soil bacteria to eliminate the water agent to irrigate the roots.
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