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Pinellia ternata pest and disease control methods and key technical points

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(1) Root rot: This disease is prone to occur in hot seasons when water accumulates in the field. After onset, the underground tubers rot, and the aboveground parts then collapse and die. Control methods mainly focus on drainage, removing diseased plants and treating the diseased holes with 5% lime water or pouring it on the roots; alternatively, soak seeds in 0.5%-2% lime water for 12-30 hours at sowing time. (2) Viral disease: Manifested as leaf curling and mosaic, mostly occurring in spring and summer. After onset, diseased plants should be pulled up and burned, and the area disinfected with lime. (3) Red hawk moth: With

(1) Root rot: This disease is prone to occur in hot seasons when water accumulates in the field. After onset, the underground tubers rot, and the aboveground parts then collapse and die. Control methods mainly focus on drainage, removing diseased plants and treating the diseased holes with 5% lime water or pouring it on the roots; alternatively, soak seeds in 0.5%-2% lime water for 12-30 hours at sowing time.

(2) Viral disease: Manifested as leaf curling and mosaic, mostly occurring in spring and summer. After onset, diseased plants should be pulled up and burned, and the area disinfected with lime.

(3) Red hawk moth: The larvae damage leaves, mostly occurring after May. It can be controlled by spraying stomach poisons such as trichlorfon or by manual capture.

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