How to control jujube anthracnose

The pathogen of jujube anthracnose is the semi-known fungus subphylum, anthrax genus. The pathogen needs to be transmitted under rain conditions and cannot be transmitted by wind. After onset in July, the degree of morbidity is related to the amount of rain and tree vigor in the current year. Rain and rain are early, and the onset is early and heavier, and vice versa. The initial appearance of brown spotted water spots followed by a sub-circular pitted lesion, followed by a lesion that enlarged dense gray to black spots. The disease caused fruit drop, and the fruit was bitter and unpalatable. The agricultural measures for preventing and controlling jujube anthracnose included pre-winter clearing of the garden, removal of fallen leaves, rational close planting, and reasonable pruning to ensure good ventilation and light transmission. The chemical control methods include spraying the pure spot wheel 5000 times liquid to kill the overwintering bacteria source during the Qingyuan Garden, and using the Guodufu 800 times solution or the Debisheng 800 times solution for prevention after germination; before the disease occurs in the middle and middle period of July, combined with the control of the winter jujube Spot disease is controlled by using 600 times Freundlirich or Debyss 600 times spray. In the early stage of disease, pure spot wheel 5000-7000 times spray is used for prevention and cure. Spray again at intervals of 7-10 days.

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