My soybean pods and stems have dark brown to black sunken blotches, some with tiny black dots, and the seeds inside are shrivelled and discoloured. Started in the wet pod filling period. What is this and can I save the crop?
2 जवाब
Dark sunken blotches on pods and stems with tiny black specks and shrivelled discoloured seed during wet pod filling points to anthracnose and the pod and stem blight complex. It mainly spreads in prolonged humid weather and through infected seed, so this is partly a seed and rotation problem for next year. For the standing crop, a recommended fungicide can protect the still healthy pods if applied during the wet spell, rotating fungicide groups, following label dose and PHI. Do not save seed from a badly infected field, since the fungus carries on the seed, and a fungicide seed treatment next season reduces it. Improve drainage and avoid an over dense canopy that stays wet. Harvest at the right moisture and dry the seed well to limit further spoilage. Confirm the disease from a pod photo with your KVK or IISR Indore.
I learned the hard way not to keep seed from such a field. The next crop had poor germination and disease again. Now I buy fresh treated seed after a bad year.