Causal organism: Fusarium oxysporum f.sp.capsici
Fusarium wilt is one of the important disease occurring in both temperate and warmer areas. The degree of loss caused by the pathogen varies depending upon host cultivar, race of the pathogen and environmental conditions.
- On the young seedlings initially, water soaked areas developed at the collar region and a brown sunken lesion which soon appeared as girdled resulting in seedling collapse.
- On adult plant initially, slight drooping of leaves which led to drying of leaves starting from lower ones extended from root to stem region and plants exhibited wilting symptom.
Yellowing of leaves
Drooping of leaves
Drying of plants
Discoloration of Vascular bundle
Primary source of inoculum: Chlamydospores, Soil, Seed.
Secondary source of inoculum: Micro conidia, Macro conidia, water
- Fusarium is a soilborne fungus. Once a field is infested, the pathogen may survive in the soil for many years. The fungus can be transported by farm equipment, drainage water, wind, or animals, including humans. The fungus is seed and soil borne.
- Warmer and drier climates (>25o C) favor disease and also when crop rotations are not practiced.
Submitted by naipagropediaraichur on Fri, 16/03/2012 - 10:40