What if the rich tree got leaf spot?
What should we do when there is a spot on the leaves of the rich tree?
Leaf spot is a common disease of rich trees, many flower friends do not know how to treat the leaf spot disease, for ordinary flower friends, many drugs are not readily available, so it is necessary to give priority to prevention and reduce the diseased leaves in time.
Symptoms of rich leaf spot disease:
In the early stage of the disease, small brown spots appeared on the leaf edge or leaf tip, and after expansion, it showed irregular disease spot, dark brown, and finally gray-white irregular spot. In the later stage of the disease, the disease spot was gray or grayish brown, the edge was dark brown lines, and there were or no yellow lesions in the periphery of the spot. The major disease spot is in the shape of paper. Under wet conditions, the disease produces a small number of small black spots.
The causes of rich leaf spot disease:
The disease is a fungal disease, which is caused by a kind of leaf spot mold. of course, it may also be caused by retting roots caused by improper water and fertilizer.
Prevention and control of leaf spot disease:
1. The planting density is suitable for ventilation and light transmission.
2. Timely drainage after rain, greenhouse ventilation and light transmission, in order to cool down and dehumidify.
3. The root system of the rich tree is underdeveloped, so it should be watered and fertilized in time to make it grow healthily and improve its disease resistance.
Cut off the diseased leaves in time after the disease. Spray 65% Acetobacter wettable powder or 50% carbendazim at the initial stage of the disease? Sulfur suspension 800 times solution, 30% basic copper sulfate suspension 400 times solution, 75% Dakonine wettable powder 700 times solution, etc. Once every 10 days.
The leaf spot of rich tree is mainly prevented, pay attention to ventilation and light, and pay attention to the maintenance of root system.
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