Symptoms Leaf lesions are round, light brown or dark brown, 4 to 6 mm larger or larger, with concentric convolutions, and sometimes yellow halos around the periphery. Black mould on the lesion when wet. When the onset is severe, the lesions of the leaves often confluent, causing the leaves to die or the whole leaves to dry. Low-lying, extensive management, lack of water and fertilizer, plant growth is poor, disease resistance is weak, and the incidence is generally heavy.

Control methods

1 Seed Disinfection: Seedlings from disease-free plants or soaked seeds in warm water at 50°C for 25 minutes, and immediately moved into cold water, and then the seeds were taken out and air-dried. It can also be seeded with 50% seed-based WP with a seed weight of 0.3% or with 50% omeprazole WP with a seed weight of 0.4%.

2Strengthen management: Apply rotation and apply basic fertilizer, but apply high-quality organic manure that is decomposed, and add phosphorus and potassium fertilizer. Where conditions permit, it is also possible to use formula fertilization to make the plant grow well and improve the disease resistance of the plant. . Diseased leaves and sick bodies should be promptly cleared out of the field and buried or burned.

3 Chemical control: At the beginning of the disease, 50% acetaminophen wettable powder 1000 times, or 50% chloramphenicol wettable powder 800 times, or 50% thiram wettable powder 500 times, or 40% sterilization Dan wettable powder 400 times, or 64% anti-virus WP 500 times, or 50% quick-inking WP 1000 times, or 70% mannosulfuron wettable powder 400 times and other sprays, Spray once every 7 days and spray 3~4 times.

Foot And Leg Massager

Foot and leg massager

Foot and leg massager

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