(1) Strengthen the prevention and treatment of disease at the seedling stage, minimize germs, and prohibit the colonization of diseased seedlings in newly developed areas to prevent the spread of diseases.
(2) Strengthen cultivation and management, maintain robust growth of trees, and increase disease resistance.
(3) before the walnut germination, spray a Baume 5 degree lime sulfur agent to eliminate overwintering germs, reduce the source of infection, and other pests and diseases such as scale insects.
(4) Bordeaux spray before spraying walnuts to protect the tree is economical and effective.
(5) In the onset of May to June, the use of wet thiophanate powder control, the effect is better. In the walnut before flowering, after flowering, young fruit period, the fruit of a long-term spray once Bordeaux mixture, on behalf of Zinc can cure a variety of pests.
(6) After harvesting, combine pruning to remove the diseased branches, pick up the net dead branches, and burn them in a concentrated or deep-buried way to reduce the source of the disease. According to the occurrence and development law of walnut disease, it should be based on prevention, comprehensive management, under the premise of scientific management and ensuring strong tree vigor, there will be quality and quantity, and greater economic benefits.
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