Identification and control methods for common pests and diseases of Alocasia macrorrhizos

Alocasia macrorrhizos is a very elegant plant. Although it is itself toxic, some people still like it and cultivate it. In the process of cultivation, you will always encounter some unavoidable pests, diseases, and other situations. So below, Shuai Shuai will tell everyone about the pests and diseases of Alocasia macrorrhizos!

I. Diseases

1. Leaf spot disease

Leaf spot disease is a condition that can make leaves turn yellow and withered. After it infects Alocasia macrorrhizos, it will cause some yellow spots to grow on the leaves of Alocasia macrorrhizos. When facing this condition, we can use chlorothalonil or carbendazim to spray the diseased leaves. Spraying continuously two or three times like this is enough, once a week.

2. Anthracnose

Anthracnose is a relatively frightening disease. Once it infects the leaves, it will make the leaves turn black and yellow, and then carbonize. This disease is caused by Bacillus anthracis. It can be sprayed with thiophanate-methyl solution, once a week, and spraying two or three times can relieve it.

3. Fusarium wilt

Fusarium wilt mainly harms its stems. This kind of Fusarium wilt is not very easy to discover, and the symptoms are not especially obvious. Moreover, once it is discovered, it is already at the late stage. As long as you find that a branch is leaning to one side, it is definitely Fusarium wilt. At this time, we can use a small knife to cut off the diseased part, then spray the not-yet-infected part with chlorothalonil medicinal solution, spraying once every ten days. After twenty days, it can recover.

II. Pests

The most common pest of Alocasia macrorrhizos is the red spider mite. Red spider mites not only suck the sap of the leaves, but also transmit the viruses they carry to the plant, harming the plant. Therefore, usually observe more. Once discovered, spray and kill them on the spot. Acaricides such as mite clear or saomanjing can all be used for control.

The above is what are the common pests and diseases of Alocasia macrorrhizos and how to control them. Have you all learned it? To learn more related information, please continue to follow Qinnongwang!