How do sweet-scented osmanthus trees suffer from leaf blight?
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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What are the diseases and insect pests of sweet-scented osmanthus trees?
How to plant Osmanthus fragrans? Please guide the planting of sweet-scented osmanthus flowers as small evergreen trees, such as golden cinnamon (orange flowers), silver cinnamon (yellow and white flowers), cinnamon (orange-red flowers), four seasons osmanthus (yellowish white flowers) and so on. Osmanthus fragrans is not only an important greening tree species, but also a famous spice plant, which has high edible value. First, complexity.
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Suitable temperature for growth of Pleurotus eryngii
The growth temperature of Pleurotus eryngii was 6 ℃ ~ 25 ℃. The growth of mushroom body is slow at 6 ℃ ~ 15 ℃, but the mushroom body has fine tissue and beautiful color, so high quality mushroom can be cultivated. The management of bud stage should strengthen ventilation in order to promote the growth of cap and inhibit the growth of stalk.
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