A Detailed Guide to the Prevention and Treatment of Common Pepper Diseases and the Methods of Applying Pesticides

AbstractPhytophthora blight: use fostyl-aluminium and mancozeb wettable powder for prevention and treatment. Viral disease: use zhibingling emulsion and duqing aqueous solution for prevention and treatment. Root rot: use sulfur suspension concentrate, thiophanate-methyl, carbendazim wettable powder, and shuangxiaoling aqueous solution for prevention and treatment. Gray mold: use procymidone wettable powder for prevention and treatment. Cotton bollworm: use cyhalothrin emulsifiable concentrate for prevention and treatment. Broad mite: use pyridaben emulsifiable concentrate and fenpyroximate suspension concentrate for prevention and treatment. Aphids: use imidacloprid wettable powder for prevention and treatment.

I. Pepper Phytophthora Blight

At the early stage of Phytophthora blight occurrence, you may choose to spray 64% oxadixyl and mancozeb wettable powder at 500 times dilution, 50% metalaxyl and copper wettable powder at 600 times dilution, or 70% fostyl-aluminium and mancozeb wettable powder at 500 times dilution for prevention and treatment. Spray about once every 5-7 days, and 2-3 consecutive sprays are sufficient.

II. Pepper Viral Disease

At the early stage of viral disease occurrence, you may choose to spray 1.5% zhibingling emulsion at 1000 times dilution or 5% duqing aqueous solution at 200-300 times dilution for prevention and treatment, which helps slow down viral symptoms. During this period, spray about once every 5-7 days, and 3-5 consecutive sprays are sufficient.

III. Pepper Root Rot

At the early stage of root rot occurrence, you may choose to spray or drench sulfur suspension concentrate at 800 times dilution, 50% thiophanate-methyl wettable powder at 500 times dilution, 50% carbendazim wettable powder at 500 times dilution, or 10% shuangxiaoling aqueous solution at 200-300 times dilution for prevention and treatment. During this period, spray about once every 10 days, and 2-3 consecutive sprays are sufficient.

IV. Pepper Gray Mold

At the early stage of gray mold occurrence, you may choose to spray 25% azoxystrobin suspension concentrate at 2500-3000 times dilution or 50% iprodione wettable powder at 800 times dilution for prevention and treatment. During this period, spray about once every 7 days, and 3 consecutive sprays are sufficient; or spray 50% procymidone wettable powder at 800 times dilution, generally once every 1 day, and 3 consecutive sprays are sufficient.

V. Pepper Cotton Bollworm

At the early stage of cotton bollworm occurrence, you may choose to spray 2.5% beta-cypermethrin emulsifiable concentrate at 2000-2500 times dilution or 2.5% cyhalothrin emulsifiable concentrate at 2000-2500 times dilution for prevention and treatment.

VI. Pepper Broad Mite

At the early stage of broad mite occurrence, you may choose to spray 15% pyridaben emulsifiable concentrate at 3000 times dilution and 5% fenpyroximate suspension concentrate at 3000 times dilution for prevention and treatment.

VII. Pepper Aphids

At the early stage of aphid occurrence, you may choose to spray 10% imidacloprid wettable powder at 2000-3000 times dilution or 20% acetamiprid wettable powder at 5000-10000 times dilution for prevention and treatment. During this period, spray once every 7-10 days, and 2-3 consecutive sprays are sufficient.