| The inhibitory affects of different concentrations of high and low molecular weight of chitosan (CH-HMw and CH-LMw, respectively) and chitosan nanoparticles (CH-HMw-NPs and CH-LMw-NPs, respectively) against linear growth and spores/sclerotia germination of the 18 phytopathogenic fungi of tomato, potato and green bean were evaluated in vitro. The studies showed that CH-HMw-NPs and CH-LMw-NPs were highly effective against all tested pathogenic fungi compared with CH-HMw and CH-LMw. Furthermore, CH-HMw-NPs and CH-LMw-NPs at concentrations 0.1% and 0.05% showed completely inhibited (100%) the mycelial growth of all tested pathogens. Meanwhile, Chitosan HMw and LMw at 1.0% caused 100% reduction of all tested pathogenic fungi. Rhizoctonia solani and Fusarium... |
