Answer: It sounds like fusarium root rot. This soilborne fungus invades the roots, causing the vascular tissue to clog and limiting the flow of water and nutrients to the leaves. Eventually the whole plant succumbs. If the disease problem is not too severe in your garden, you can rotate other nonsusceptible crops such as cabbage or sweet corn into your bean plot. Avoid planting any other beans, peas or limas there. For severe infestations, soil solarization can be effective. Remove any plant debris, rake the area smooth and moisten the soil. Lay a sheet of white plastic loosely over the area and fasten the edges. Leave it alone for about 6 weeks, then remove the plastic and plant. This process kills the disease organisms in the soil. Avoid tilling again before planting.
Q&A Library Searching Tips