Anthracnose can show up on soybean leaves, stems, and pods at almost any stage of the crop, and it tends to flare up hard whenever the weather stays warm and wet for a stretch. It's caused by the fungus Colletotrichum truncatum. Signs of Anthracnose in Soybean Dark, sunken lesions on stems and pods Small, irregular brown spots on leaves that merge into larger patches over time Leaves drying up and dropping earlier than they should Pods with shrivelled, discoloured, or poorly filled seeds Pinkish spore masses on infected pods and stems in humid weather Causes of Anthracnose in Soybean Warm, humid weather with frequent rain, especially around flowering and pod-fill Infected or uncertified seed carrying the fungus Continuous soybean cultivation in the same field without rotation Infected crop residue left on the soil from a previous season A thick, crowded canopy that stays damp longer after rain Stages Where Anthracnose Hits Hardest Seedling stage: infected seed can cause poor germination or seedlings that damp off soon after emergence Vegetative stage: leaf and stem lesions appear but usually cause limited damage on their own Flowering to pod-fill: the disease becomes most damaging here, especially in wet weather, attacking pods directly Maturity: infected pods can carry the fungus into the harvested seed, carrying the problem into next season Prevention of Anthracnose in Soybean Use certified, disease-free seed Treat seed before sowing in fields with a known history of the disease Rotate with a non-host crop where anthracnose has been a repeat problem Clear and destroy infected crop residue after harvest instead of leaving it in the field Avoid overly dense sowing so the canopy dries out faster after rain Solutions to Treat Anthracnose in Soybean 1. Carbendazim 12% + Mancozeb 63% WP This combination pairs a systemic fungicide with a contact one, so it keeps working inside the plant even as it protects the surface from new infection. It's one of the most widely trusted combinations for anthracnose because it tackles the fungus both from within the leaf and on its surface. Product Recommendation Saaf Fungicide Dhanuka Sixer Katyayani Samartha 2. Tebuconazole 25.9% EC Tebuconazole moves through the plant and keeps working even after it's absorbed, which helps it hold up better if rain follows soon after spraying. It also gives the crop a visible greening effect alongside stopping the disease. Product Recommendation Bayer Folicur Agriventure Tebcon Note: Rotate between these two fungicide groups across sprays rather than repeating the same one every time, to avoid resistance development in the fungus. Disclaimer: Always confirm current label registration, approved dosage, water volume, and pre-harvest interval (PHI) for your state before using any product, since labels are periodically revised by regulatory authorities. This guide is a general advisory. Do your own research and verification before using any product. Always confirm suitability for your crop stage, region, and field conditions before making any purchase, spray, or crop-management decision.