Prevention and cure of strawberry black spot disease incidence and methods

The law of onset: The pathogens are overwintering on mycelium or on the diseased tissue in mycelia. By propagation of seedlings, pathogenic spores in the environment can also cause the onset of infestation. High temperature and high humidity are conducive to disease. The humid microclimate in the field can aggravate the disease, and the incidence of severe disease is heavy. Resistance among varieties is different, Shenggang 16 is the most susceptible, Camrose, Shimei 4, Sweet Charlie, etc. are more resistant.

Control methods:

(1) Agricultural control: The selection of resistant varieties such as sweet Charlie, Camrose Rosa, and Shimei No.4. In the winter and spring seasons, the gardens are cleared, the decayed branches and leaves are burned, and in the growing season, the old and remnant leaves are removed and the infected fruits are destroyed.

(2) Chemical control: use 2% pyrimidine nucleoside antibacterial agent 200 times liquid, or 50% carbendazim wettable powder 800 times, or 70% thiophanate-methyl WP 1000 times, or 10 % Polymycin wettable powder 600 times, or 10% difenoconazole water dispersible granules 1000-1500 times spray. Intermittent spray 7 days, even spray 2-3 times, stop the drug 3 days before harvest.

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Shandong Shengli Bioengineering Co., Ltd , https://www.shenglipharm.com