What are the correct methods for using low-toxicity fungicides?
How are low-toxicity fungicides used? Please provide an introduction to the methods. The following introduces the methods for using several low-toxicity fungicides: Antimycin 120 (Nongkang 120, 120 agricultural antibiotic) is suitable for controlling powdery mildew, anthracnose and Fusarium wilt. To control soil-borne diseases such as Fusarium wilt of cucurbits and eggplant, a 2% aqueous solution at 130 to 200 times dilution can be used...
How are low-toxicity fungicides used? Please provide an introduction to the methods
The following introduces the methods for using several low-toxicity fungicides:
Antimycin 120 (Nongkang 120, 120 agricultural antibiotic) is suitable for controlling powdery mildew, anthracnose and Fusarium wilt. To control soil-borne diseases such as Fusarium wilt of cucurbits and eggplant, a 2% aqueous solution at 130 to 200 times dilution can be used for root drenching, 500 milliliters each time, once every 5 days.
Metalaxyl (also known as Ridomil, Apron) can be used to control downy mildew of cucumber and Chinese cabbage, late blight of cucumber and green pepper, and late blight of potato. Generally, at the early stage of disease onset, a 25% wettable powder at 600 to 800 times dilution is sprayed. For soil-borne diseases, 400 to 500 grams of 25% wettable powder per mu can be diluted with water for soil treatment. Previcur can control leaf diseases caused by Pythium, Phytophthora and downy mildew fungi. Drenching with 72.2% Previcur water-soluble liquid at 400 to 600 times dilution can control vegetable Phytophthora diseases and damping-off and Rhizoctonia rot at the seedling stage. Spraying with 72.2% water-soluble liquid at 600 to 1000 times dilution at the early stage of disease onset can prevent cucumber downy mildew. Mixing this product with non-alkaline fungicides can improve the control effect.
Sandofan can be used to control early blight, late blight and rot of tomato, downy mildew and Phytophthora blight of cucumber, Phytophthora fruit rot of eggplant, and early blight and late blight of potato. Generally, at the early stage of disease onset, a 64% wettable powder at 400 times dilution is sprayed.
Procymidone (Sumilex) has a special effect on gray mold and sclerotinia rot of cucurbits, vegetables and grapes. Generally, a 50% wettable powder at 600 to 800 times dilution is sprayed, or a 30% granule formulation is used for smoke fumigation.
Phosethyl-Al (also known as triethyl phosphonate aluminum, phosethyl) has significant control effect on downy mildew and Phytophthora diseases of many crops, with a residual period of more than 20 days. Generally, 40% Phosethyl-Al at 250 to 300 times dilution is sprayed. Iprodione mainly acts preventively, such as against early blight of tomato and gray mold of cucumber and pea.
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