What pesticide works well to control gummosis in peach trees?

The peach tree is a small deciduous tree. Its fruit is one of the fruits of the Yangtze region in daily life, and its flesh is delicious and nutritious, earning it the title of “the number one fruit under heaven.” So, what pesticide should be used for gummosis in peach trees?

1. What pesticide should be used for gummosis in peach trees?

From December to the following January, spray a 400-fold fungicide solution + silicone to eliminate overwintering fungal sources and insect eggs; you can also spray a 600-fold fungicide solution + silicone before the peach tree buds, to kill active pathogens; or spray a 600-fold fungicide solution from late March to mid-April for prevention; or spray a 600-800-fold fungicide solution from early May to early June and from early August to early September for control.

2. Introduction to peach gummosis

Peach gummosis is an important disease of branches and trunks, causing tree decline, reduced yield or tree death. There are two types: non-infectious and fungal-infectious.

1. Physiological gummosis: mainly occurs on the trunk and main branches. After rain, the gum contacts the air and turns into tea-brown hard amber-like gum blocks. After infection by saprophytic fungi, the diseased part turns brown and rots, causing the tree vigor to become weaker and weaker, and in severe cases causing tree death. The disease is more severe in the rainy season, more severe in older trees, and milder in young trees.

2. Infectious gummosis: mainly damages branches and trunks. The pathogen infects current-year branches, mostly invading from wounds and lateral buds, causing tumor-like protrusions centered on lenticels. It does not produce gum in the same year and has latent infection characteristics. The following year, the tumor bark cracks and gum oozes out. In the late stage of the disease, a large number of spindle-shaped or round small black spots appear on the surface of the diseased part. There are 2 peak periods in 1 year: 1 from early May to early June, and 1 from late August to early September.