The Causes and Treatment of Camellia (T-J) Disease
A brief knowledge sharing, introducing the causes and treatment methods of Camellia (T-J) disease for green plant care. Here are the details explained by the editor:
The Causes and Treatment of Camellia (T-J) Disease
Camellia (T-J) disease overwinters in the form of mycelium in diseased branches and leaves. When the temperature rises to about 20°C in the following spring, the pathogen produces conidia, which are spread by wind and rain. When the air humidity is high, the spores germinate and infect the leaf tissue. It can be controlled with thiophanate-methyl, benomyl, or carbendazim. It is recommended to mix potassium dihydrogen sulfate solution when spraying, which can enhance plant resistance.
Causes of Camellia (T-J) Disease
Camellia (T-J) disease overwinters in the form of mycelium in diseased branches and leaves. When the temperature rises to about 20°C in the following spring, the pathogen produces conidia, which are spread by wind and rain. When the air humidity is high, the spores germinate and infect the leaf tissue. The optimal temperature for the growth and development of the pathogen is about 25°C.
Symptoms of Camellia (T-J) Disease
Camellia (T-J) disease occurs on the leaves of camellias, mainly on mature or old leaves. The lesions are nearly circular or irregular, dark green, and eventually turn yellowish-brown or reddish-brown, with small black dots in the center, varying in size, and can expand to more than half of the leaf.
Treatment of Camellia (T-J) Disease
Camellia (T-J) disease can be controlled with thiophanate-methyl, benomyl, or carbendazim. It is recommended to mix potassium dihydrogen sulfate solution when spraying, which can enhance plant resistance.
Camellia (T-J) Disease MedicationCamellia (T-J) disease requires timely spraying for control. Generally, 25% benomyl wettable powder, 50% thiophanate-methyl wettable powder, or 50% carbendazim wettable powder can be used for spray control.
Prevention and Treatment Methods for Camellia (T-J) Disease
1. If there are withered branches and leaves, they should be cleared promptly, and dense and diseased branches should be pruned and incinerated to eliminate the source of infection.
2. Strengthen cultivation management, apply organic fertilizers to enhance plant resistance, remove weeds frequently to reduce bacterial transmission, and irrigate rationally.
3. At the beginning of the disease, spray with an equal concentration of 150 times Bordeaux mixture, zineb, or methylethylthiophanate every 15 days, for 2-3 times.
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