Pepper is a commonly used cooking seasoning, and it is also affected by various diseases during the planting process. The pepper plaster disease is one of the more common diseases, and it is named after a piece of dog skin plaster on the pepper tree branch. Today, we will talk about the prevention and treatment of pepper plaster disease.
The pathogen of the pepper plaster is the basidiomycete fungus, and the whole membrane is like the plaster used by the Chinese medicine. If the plaster disease occurs lightly, the tree grows poorly yellow and has less fruit; the heavy one causes the stem to die.
Symptoms
After the onset of peppercorns on the trunk and branches of the pepper, an oval or irregular thick membranous mycelium layer is formed, which is brown to brown velvet, with a lighter edge and a dry and shrinking crack in the middle.
Law of onset
The secretion of scale insects can promote the occurrence of plaster pathogens, and the membrane cover of the plaster disease protects the scale insects. In rainy seasons and humid areas, germs can spread through scale insects, mites, and air currents. The pepper garden plaster disease, which is seriously endangered by the scale insects, occurs more frequently, and is also prone to occur in pepper gardens where the foliage is lush, the ventilation is poor, and the air is humid.
Control method
(1) Physical methods: timely remove the pests and branches, over the dense branches, do a good job in the prevention and control of aphids and scales; control the cultivation density, reduce the humidity of the pepper garden, and enhance the ventilation and light transmission capacity of the trees.
(2) Chemical control: In the middle of the onset, the lesions can be sprayed 3 times with Mancozeb, once every 7-10 days. If there is a mixture of scale insects, you can add the national light to spray the trunk or mix the medicine with the Guoguang Songer film and then brush the trunk.
The above is the control method of pepper plaster disease, the content is for reference only, the growers should adjust the control plan according to their actual situation.
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