Recently, I was asked, “How do I know if I should have sprayed a fungicide on my soybeans or not?” Below is a checklist of how to make these decisions and some photographs of a few foliar diseases.
- Check the weather and scout often. To know if a fungal disease is present, you’ve got to go to the field and look throughout the canopy. If it is warm, wet and humid, you probably have some disease present. There...