The sooner the better: It’s easier and more cost effective to overcome infestation by controlling sclerotinia sclerotiorum in its initial stage. Make it a routine to monitor the field regularly and search plants for the presence of white mold on a weekly basis.
As with any moisture-favorable disease, various techniques taken during crop growth can reduce the chances of infection and spread:
Maintain adequate space: Avoid over density planting in order to allow light to penetrate and to promote the quick drying of leaves and fruits on humid days
Recurrence: Year-after-year outbreaks in the same field can point to heavily contaminated soil. This could justify crop rotations and preventive measures such as soil disinfection. Solar disinfection of the soil (solarization or pasteurization) can be implemented in sunny areas. This involves covering prepared and moistened soil with a polyethylene film 35–50 μm thick and keeping it in place for at least 1 month during a sunny period of the year. This will eradicate the presence of white mold on the top layers of soil. It is common for solar disinfection to be accompanied by fumigants such as metam-sodium.
Sanitation: Plant debris must be removed during cultivation, especially affected plants that produce sclerotia, but also at the end of cultivation to avoid fungi from surviving in the soil after burial
Preventive control measures can be considered, including:
Improve air circulation: Promote drying foliage and shorten the duration of wetting periods by introducing net curtain vented areas
Proper soil drainage: The presence of standing water will promote the spread of white mold
Drip irrigation is preferable to other methods of irrigation
Other moisture reduction techniques (during growth) include covering the ground with polyethylene sheets to reduce evaporation from the soil and help isolate vegetation from the soil