Anthracnose of Soybean
Anthracnose can infect stems, pods, and leaves of the soybean, often without symptoms. Symptoms may become visible only during the reproductive growth stages. When weather conditions become warm and moist, small dark irregular spots appear on stem and pods. These spots may themselves be covered by small black dots. Leaves might curl and veins turn brown. In severely infected pods small, moldy sterile seeds are produced. Early infection of seedlings can lead to damping-off.
The pathogen can survive for over a year on plant material. Spores produced on infested residues are blown by wind and rain onto upper leaves. Infection typically occurs when leaf wetness, rain or dew periods exceed 12 h per day.Overall, the disease may have little effect on the yield, but stands and seed quality can be reduced. In regions with favourable conditions (wet soils, warm and humid weather), yield losses can be high.
No biological treatment is available against Anthracnose so far.
Always consider an integrated approach with preventive measures together with biological treatment if available. If more than 5 % of the seeds are infected, a treatment with fungicides is recommended. Chlorothalonil, copper sprays or propiconazole and the systemic fungicide thiophanate-methyl can be used.
Plantix offers detailed weather information on the following issues:
You can post your questions and pictures and get feedback from other farmers or gardeners. Plantix' experts will answer your questions related to plant diseases and pests.
Exchange with Plantix users around you, in your language and related to the crops you grow.
Connect to farmers, gardeners, experts and interested people around the world that discuss plant diseases, remedies and best practice for sustainable farming.
Plantix analyzes your picture within a few seconds and gives you instant feedback on your plant problem.
On top of the detection result, Plantix offers you a detailed description of possible solutions - both biological and conventional.
Plantix offers information on preventive measures to protect your crop from the next attack.