If sclerotia of either pathogen make their way back into the soil, both can survive for years causing significant problems.Īll infected plants need to be removed immediately and disposed of properly to help reduce the chances of sclerotia returning to the soil.įor more information on chemical control please see the 2022/2023 mid-Atlantic Commercial Vegetable Production Recommendations Guide. Whitish fungal growth (See figure 27) develops around the base of herbaceous plants. The pathogen produces large black sclerotia on the surface and inside infected stems. Southern blight is caused by a soil-born fungus, Sclerotium rolfsii. Infection occurs near the soil line, and. White mold is more common than Southern blight in New Jersey, and like Southern blight, once introduced into a field or high tunnel it can very difficult to control. privet, Liriope muscari, mulberry, Poncirus trifoliata, Rosa spp., Vinca minor, yucca, okra, tomato, and tobacco. Cool, wet weather favors disease development hot, dry weather checks it. The fungus will produce white, cottony mycelium and very small, spherical sclerotia which are often have a tannish, brown color. Late blight of tomato is a disease that progresses very rapidly. The resulting infection will girdle the plant causing wilt and death. Symptoms of Southern blight include infection at the base of the stem at the soil line. Like white mold, it can survive in the soil for many years. Southern blight is much more common in vegetable areas south of the state where summer temperatures remain hotter (above 90☏) for longer periods of time. Southern blight on plants is most likely to occur in the. The disease attacks a wide range of vegetable crops and ornamental plants at or below the soil line. It is caused by the soil borne fungus Sclerotium rolfsii. There have been a few reports of Southern blight ( Sclerotinia rolfsii) and White mold ( Sclerotinia sclerotiorum) on tomato and pepper in New Jersey. What is Southern Blight Southern blight, southern wilt, southern stem rot, and southern root rot all refer to the same disease.
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