Control of Diseases and insect pests of Pinellia ternata

Disease

Pinellia mosaic virus disease: whole plant symptom. When the disease occurs, the leaf color is mottled with dark green and light green, both flowers and leaves. The leaf shrinks and the plant becomes small. Control methods: virus-free tuber planting and stem tip culture and other detoxification techniques are adopted to cultivate virus-free Pinellia ternata tuber is the most economical and effective measure.

Pinellia mosaic virus disease

Leaf spot disease: there are purple-brown disease spots on the leaves at the onset of the disease, and then the plants gradually wither. Prevention and treatment: spray 1 ∶ 1 ∶ 120 Bordeaux solution or 65% Dysenamine 500x solution before and at the initial stage, once every 7-10 days for 2-3 times.

Block foundation rot disease: mostly occurs in long-term stagnant water, after the disease, the underground block foundation rotted, the aboveground part withered, ditching and drainage was often used for prevention and control.

Insect pest

Taro double-line diamondback moth: the larvae endanger the leaves, bite into notched or light-eating leaves, and only part of the petiole remains. Prevention and control method: spray 90% trichlorfon 800 times liquid in infancy; it can also be caught manually.