Control of diseases and insect pests of licorice
(1) Rust: the disease occurred from May to June, causing damage to leaves. Prevention and treatment methods: ① concentrated burning of diseased branches; at the initial stage of the onset of ②, 90% diazepam sodium was sprayed 400 times.
(2) Brown spot disease occurred from May to June, causing damage to leaves. Prevention and treatment methods: ① concentrated burning of diseased branches; at the initial stage of the onset of ②, spray 1: 1 100: 160 Bordeaux solution or 70% methyl topiramate wettable powder 1500-2000 times.
(3) powdery mildew occurred from May to June, causing damage to leaves. Prevention and cure method: spray 0.2-0.3 Baumedu stone-sulfur mixture.
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What are the main local diseases and insect pests of licorice? How to prevent and cure?
(1) at the initial stage of the onset of rust, the rust can be sprayed with 1000 times of 25% powder or 97% of diazepam, once every 7-10 days, for a total of 2-3 times. (2) spraying Bordeaux liquid at 1:1 before the onset of brown spot; at the initial stage of the disease, spray control with 2000 times of methyl thiophanate wettable powder or 75% chlorothalonil, once every 7-10 days for a total of 2 times. (3) the aphids were sprayed with 1500 times of 40% dimethoate EC.
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Prevention and control of diseases and insect pests of licorice
The main diseases of licorice are rust, powdery mildew and brown spot. Licorice rust mainly harms the leaves and tender stems of the plant. Yellowish-brown blister is produced on the back of the infected leaves, and brown powder is released after the epidermis is ruptured. The control method burns the leaves of diseased plants. At the initial stage of the disease, it can be prevented and treated with 1000 times of powder and sulfur mixture or 65% wettable Dysen zinc, once every 7 to 10 days, 2 to 3 times in succession. Licorice brown spot disease is also called
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