Pest and Disease Control for Edible Fungi and Downy Mildew Control in Broccoli

Strengthen inspections and apply fungicide promptly to control the disease. Spray to control it when a primary infected plant or an infection center appears. Fungicide options include 35% metalaxyl, 64% oxadixyl-mancozeb, and 58% metalaxyl-mancozeb wettable powder at 500x to 700x dilution, or 65.5% propamocarb aqueous solution and 72% cymoxanil wettable powder at 600x to 800x dilution, or 69% dimethomorph-mancozeb + 70% chlorothalonil (1:1) at 1000x dilution. Use them alternately and spray evenly.