Home › Medicinal Herb Cultivation › Article

What are the control methods for root rot in Schisandra chinensis?

Medicinal Herb Cultivation 0 views
Root rot in Schisandra chinensis, commonly known as "rotten neck" disease or "strangle neck" disease, is one of the main diseases in Schisandra chinensis cultivation. At present, the affected area is relatively widespread and the damage is relatively severe. The disease generally occurs from May to early August. When the disease begins, the epidermis at the junction of the root and the ground (the root crown area) turns black, and further the cortex rots and falls off, forming a ring, the leaves wilt, and after a few days the entire plant dies. The cause of the disease is related to a physiological disorder. In early spring and late autumn, the ground temperature changes drastically between day and night, with a large temperature difference; the tissue at the root crown area is tender, disease resistance is reduced, and the cortex is damaged by freezing and infected by fungi, all of which can cause rot and disease. Waterlogged, low-lying land and relatively heavy clay soil have severe disease incidence, and plants that are not robust in growth and have poor vine maturity have more severe disease incidence.

Root rot in Schisandra chinensis, commonly known as "rotten neck" disease or "strangle neck" disease, is one of the main diseases in Schisandra chinensis cultivation. At present, the affected area is relatively widespread and the damage is relatively severe. The disease generally occurs from May to early August. When the disease begins, the epidermis at the junction of the root and the ground (the root crown area) turns black, and further the cortex rots and falls off, forming a ring, the leaves wilt, and after a few days the entire plant dies. The cause of the disease is related to a physiological disorder. In early spring and late autumn, the ground temperature changes drastically between day and night, with a large temperature difference; the tissue at the root crown area is tender, disease resistance is reduced, and the cortex is damaged by freezing and infected by fungi, all of which can cause rot and disease. Waterlogged, low-lying land and relatively heavy clay soil have severe disease incidence, and plants that are not robust in growth and have poor vine maturity have more severe disease incidence.

Control methods: ① Choose loam or sandy loam plots that are high and dry and not low-lying or waterlogged for cultivating Schisandra chinensis. ② Strengthen comprehensive management, apply more organic fertilizer, and pay attention to drainage during the rainy season. Before freezing in autumn, pile about 30 cm of thick soil around the roots to prevent frost damage to the root crown area. ③ Minimize damage to roots and plants during production operations. ④ In the early stage of the disease, use 50% carbendazim wettable powder at 500 times dilution to drench the roots, or use 30% hymexazol aqueous solution to drench the roots.

Related Articles