Biological control of Azotobacter chroococcum on Fusarium solani in tomato plant

Abstract

this experiment aimed to study the effect of Azotobacter chroococcum in reducing infection of the tomato plant by Fusarium solani under the greenhouse condition. The results show that Fusarium solani isolates proved high pathogenicity and chosen isolate (Fs4) for being given a lower percentage of germination of cabbage seeds and the highest disease severity to tomato seedling. Also, the results were indicated that T6 (Biofertilizer at concentrations (25 ml\2Kg soil) with F. solani (F.s4) was the past this treatment reduced significantly the disease severity (73.10%) which also recorded a positive effect on the growth parameter of tomato plant compare to T1 (pathogen only).