The present investigation was to determine the antifungal ativity of different chitosans and chito-oligosaccharides against Alternaria solani. Out of four chitosans tested, chitosan DA10 and 134 was recorded as and at 1000ppm, respectively where as at 1500 ppm conc, the inhibition percent was and , respectively. Among the treatments, chitosans exhibited maximum growth inhibition of pathogen at obtained by enzymatic degradation of the chitosans using promising biocontrol agents have exhibited a positive effect on the growth of the test pathogen showing that they were not effective in reducing the disease. | Antifungal effect of chitosans and chito-oligosaccharides against early blight of tomato
