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Control of rhododendron disease in Belgium

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, The physiological pathological changes in the prevention and control of common diseases of Belgian rhododendron are mainly caused by the difference of water quality between production and marketing places, the uncomfortable temperature on the way of circulation or the lack of time in the family. The main treatment method is to adjust the light, pH and temperature of irrigation water according to the physiological habits of Belgian rhododendron. The common diseases in pathology are as follows: Botrytis cinerea is treated by thinning seedlings, reducing humidity and heat preservation as the fundamental measures. Drug treatment can be treated with prohydantoin (1500-fold solution), mancozeb (500x solution), Sukeling (15.

Control of common diseases and insect pests

The physiological pathological changes in the common diseases of Belgian rhododendron are mainly caused by the difference of water quality between production and marketing, the uncomfortable temperature on the way of circulation or the lack of time in the family. The main treatment method is to adjust the light, pH and temperature of irrigation water according to the physiological habits of Belgian rhododendron.

The common diseases in pathology are:

Grey mold disease

Take thinning seedlings, reducing humidity and heat preservation as the fundamental measures. For drug treatment, one of the fungicides can be sprayed, such as prohydantoin (1500 times), mancozeb (500x), Sukeling (150x), chlorothalonil (600x) and so on. Generally use 2-3 times, once every 7-10 days, it is better to use drugs in rotation.

White silk disease

White silk fungus generally harms the roots. The cultivation substrate should be strictly selected and preventive measures such as exposure to the sun or mixing medicine should be adopted before use. Drug treatment can irrigate the roots with dioxone (500 times solution) or pentachloronitrobenzene (800 times solution) during the growth period. Generally, it can be eliminated by applying twice, and the interval is about 10 days.

Stem rot

Stem rot usually occurs on the seedling bed, and the symptom is stem rot at the base of the seedling. Transplanting seedlings in time is the fundamental way to control. The effect of drug prevention and treatment is better when the root is irrigated with poison alum (600 times liquid) or DuPont Kelu (600 times liquid).

The common pests are mainly mites and red spiders. Mite repellent (1500-fold solution) or avermectin (3000-fold solution) are sprayed for drug control. It can be solved by spraying twice, once every 7-10 days.

 
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