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How do sweet-scented osmanthus trees suffer from leaf blight?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, What are the propagation methods of sweet-scented osmanthus trees? Please guide and thank sweet-scented osmanthus trees for the following breeding methods: 1. Grafting and reproduction. The rootstocks of sweet-scented osmanthus trees are generally privet or water wax, and most of them use ventral grafting or leaning grafting method. in recent years, some people have tried the tearing method. The tearing method is easy to operate, and the survival rate is about 93%. The specific method is: in the spring bud.

How do sweet-scented osmanthus trees suffer from leaf blight? Leaf blight is an important leaf disease of sweet-scented osmanthus, which is extensive and serious. The diseased leaves initially appeared large round or irregular patches, grayish brown, with dark brown edges; in the later stage, black spots appeared on the lesions and fused with each other, so that the leaves dried up in a large area. The disease is caused by mouldy fungus infection of rhinoceros leaves. Generally, the disease occurs more frequently on the old leaves after overwintering. In the environment of high temperature, high humidity and poor ventilation, the plant growth is weak and the disease is serious. Prevention and control: (1) strengthen cultivation management-increase the application of decaying fertilizer and potash fertilizer to avoid stagnant water in the soil, so as to promote growth and improve disease resistance. The diseased leaves were removed and burned to reduce the source of infection. (2) Pharmaceutical control-spraying 50% carbendazim 1000 times or 50% benzoate 1500 times during the disease period. It can also be sprayed with Bordeaux liquid with lime multiplication of 1V / 2V / 200. Click to get more sweet-scented osmanthus planting techniques

 
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