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Glue-dried peach branches are the most common physiological diseases. The diseased trees are weakened, and the branches are often broken, resulting in incomplete canopy, premature tree failure, shortened results, low yield, and poor quality. Prevention and control measures: (1) Taoyuan should drain water to prevent waterlogging, and pay attention to soil improvement, lime soil for acid soil, and organic fertilizer for viscous heavy soil. (2) In the early spring, scrape off the peach gum block, then apply the wound with medical purple oil and apply it once every 10 days or so.
Fusarium oxysporum, the ascospores or spores, is overwintering on the bud scales and barks of peach trees. In early spring, the overwintering spores germinate and invade the leaves when the peaches sprout, making the diseased leaves hypertrophic, shriveled, and discolored. The occurrence of the disease is closely related to the early spring gas conditions. The germination of peach trees is severe when it is continuously cloudy and rainy, and vice versa. The incidence of early-maturing varieties is usually heavy, and that of late-maturing varieties is light. Prevention measures: (1) Strengthen orchard management. The diseased leaves were found to be removed and burned in time, and timely application of fertilizers was made to the seriously ill strains to increase the tree vigor and improve the resistance of the trees. (2) Peach blossom before opening a 4 ~ 5 Baume degrees lime sulfur or 100 times the equivalent (that is, copper sulfate, lime and water ratio of 1:10:100) Bordeaux mixture, with 65% in late May Sen Zinc wettable powder 300 ~ 500 times sprayed 1 to 2 times.
Peach trees in spring are prone to gummy disease and leaf deflation, and measures should be taken to prevent and treat them early.