Cucumber leaf blight control method
Symptoms of cucumber leaf blight disease: mainly damaged leaves, round or irregular lesions, brown, peripheral or lack of yellow halos, gray-brown or brownish-brown moldy surface (conidia and conidia Stem), when severe disease leaves dead.
Incidence of the disease: The pathogens mainly lived in the soil with mycelia and left over in the winter, and conidia were produced in late spring. They were transmitted by air flow and then infected with conidiospores on diseased leaves for reinfection. Plant weakness, waterlogging in the field, high humidity, easy to induce the occurrence of the disease.
Control methods: Apply enough base fertilizer, drain water promptly after rain, and allow ventilation between buildings. Spray fungicide: 80% spray WP wettable powder 600-800 times; 75% chlorothalonil wettable powder 600 times; 50% carbendazim WP 800 times. Spray once every 10 days or so, for a total of 2-3 times.
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