How to prevent and control viral diseases in winter melon cultivation?
How to prevent and control viral diseases in winter melon? Please introduce effective methods for preventing and controlling viral diseases. The main methods for preventing and controlling viral diseases in winter melon are the following 5 points for reference: (1) Choose relatively disease-resistant varieties. Raise seedlings in a centralized way, or lay silver-gray film in the field to repel aphids. (2) Timely control aphids in the field. You can use 20% fenpropathrin·malathion emulsifiable concentrate at 1500 times dilution, or 25%...
How to prevent and control viral diseases in winter melon? Please introduce effective methods for preventing and controlling viral diseases.The main methods for preventing and controlling viral diseases in winter melon are the following 5 points for reference:
(1) Choose relatively disease-resistant varieties. Raise seedlings in a centralized way, or lay silver-gray film in the field to repel aphids.
(2) Timely control aphids in the field. You can use 20% fenpropathrin·malathion emulsifiable concentrate at 1500 times dilution, or 25% pirimicarb emulsifiable concentrate at 2000 times dilution.
(3) Within 400 m around the winter melon field, it is best not to plant cucurbit crops.
(4) Select and keep seeds from disease-free melons, and soak the seeds with 10% trisodium phosphate for 10 minutes, or treat the seeds with dry heat, that is, constant temperature treatment at 70°C for 72 hours.
(5) At the early stage of disease onset, begin spraying 5% moroxydine hydrochloride aqueous solution at 500 times dilution, or 24% mixed fatty acid·copper aqueous solution at 800 times dilution, 20% moroxydine hydrochloride·cupric acetate aqueous solution at 500 times dilution, 3.85% ribavirin·copper·zinc (Bingdubike) emulsion in water at 600 times dilution, 6% moroxydine hydrochloride·triacontanol (Bingduke) wettable powder at 700 times dilution, 2% ningnanmycin (Junkeduke) aqueous solution at 500 times dilution, 0.5% mushroom polysaccharide aqueous solution at 250-300 times dilution, 10% mixed fatty acid copper aqueous solution at 100 times dilution, once every about 10 days, for 2-3 consecutive treatments.
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