Plum tree gum disease mainly damages trunks, and fruit can flow. After the trunk and main branch were injured, the diseased department uplifted and the gum flowed out. The condition became worse after the rain. After the gum dried, it turned reddish-brown to a dark brown hard mass. When a large number of lesions on the branches, often a lot of plastic flow, resulting in weakening tree vigor, severe branches withered. The fruit is infected, yellow gum overflows the fruit surface, the disease is hardened, and cracks occur later, which seriously affects the value of the product.
The plum tree filthy gum disease can develop in the growing period, but it is the peak period of high-temperature, high-humidity from June to August. The physical damage of the tree, such as artificial mechanical damage and natural injury such as frost damage and sunburn, becomes the cause of fluidic gum disease; and the soil has heavy weight, poor ventilation and light transmission, excessive pruning, high soil moisture content, and long duration. Inadequate cultivation and management measures such as severe diseases, weeds and weeds also provide conditions for the occurrence of fluidic diseases. In addition, plum tree gum disease can also be caused by a fungus infection of the subphylum Subgeniospora.
The plum tree filthy gum disease can develop in the growing period, but it is the peak period of high-temperature, high-humidity from June to August. The physical damage of the tree, such as artificial mechanical damage and natural injury such as frost damage and sunburn, becomes the cause of fluidic gum disease; and the soil has heavy weight, poor ventilation and light transmission, excessive pruning, high soil moisture content, and long duration. Inadequate cultivation and management measures such as severe diseases, weeds and weeds also provide conditions for the occurrence of fluidic diseases. In addition, plum tree gum disease can also be caused by a fungus infection of the subphylum Subgeniospora.
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