Silver nanoparticles used in concentration 100 ppm inhibited S. sclerotiorum development on fresh cut carrot. The best results were obtained for nano-silver with diameter 8 nm (when the spraying was done twice: before and after fungus inoculation). Nano-copper and mixture of nano-silver and nano-copper did not affect the disease development. It was found that none of used nanopar-ticles (nano-silver, nano-copper, and mixture of nano-silver and nano-copper) inhibited B. cinerea mycelium growth on fresh cut cabbage and fresh cut onion. Huwa-San TR50 appeared to be effective against S. sclerotiorum if the pathogen inoculation was done after two and three days of vegetable spraying. Huwa-San did not influence on B. cinerea growth on cabbage and onion.