MySheen

Fungal perforation of peach

Published: 2024-11-08 Author: mysheen
Last Updated: 2024/11/08, [symptoms] Leaf infected, primary round or subcircular spot, purple edge, slightly ringed, size 1mm; in the later stage, grayish brown mildew grew on the spot, dried off in the middle, formed a perforation, the edge of the perforation was neat, and the leaf fell off when there were many perforations. New shoots and fruits are infected, and the symptoms are similar to those of leaves. [incidence rule] [regional hazard] [comprehensive control] ⑴ eliminates bacterial sources. Cut off the diseased branches in time, thoroughly remove the diseased leaves, burn or bury them deeply. Spray before the peach tree sprouts

[symptoms]

The leaf is infected, the primary round or subcircular spot, the edge is purple, slightly ringed, the size is 1-4 mm; in the later stage, the gray-brown mildew grows on the disease spot, the middle part dries off, forms the perforation, the perforation edge is neat, when the perforation is many, the leaf falls off. New shoots and fruits are infected, and the symptoms are similar to those of leaves.

[morbidity regularity]

[regional hazard]

[integrated prevention and control]

⑴ scavenged the bacterial source. Cut off the diseased branches in time, thoroughly remove the diseased leaves, burn or bury them deeply. Before peach trees sprout, spray 300 times of 80% pentachlorophenol sodium once. If you need to control overwintering pests, you can add 3-5 Baumetu stone sulfur mixture to use. It is best when the peach bud scale is enlarged, but the green and delicate tissue is not exposed.

In early spring, ⑵ sprayed 50% thiophanate methyl wettable powder 500x solution or 70% mancozeb dry powder 500x solution, 50% carbendazim wettable powder 1500 fold solution, 1V 1V 100g 160x Bordeaux.

 
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