Pot experiments were conducted to study ~he effect of individual or mixed
inoculation with R. legumlnosarum bv. Viceae, A:rotobacterchoroccum and phosphate
dissolving mycorrhiza (VAM) used to inoculate (aba bean infected or n n - infected
with board bean stain virus (BBSV). App(ication of Rhizobium alone Of in combination with either Azotobacter or
mycorrhiza led to a significant Increase in number and dry weight of nodules, and dry
weight of shoots and its total nitrogen content on both healthy or viral infected plants
in comparison with their corresponding control. The increase of nitrogen. phosphorus,
Pholosynthale pigments were a/so significantly increased after 60 days or planting. In
these respect the triple inoculation showed superiority than single or duall inoculation.
Saparate virus infection. signiflcandy reduced all these parameters. On th other hand
a clear recovery was obtained in all nitrogen fixation parameters. as we I as in grain
yield and its total N contents of disease plant due 10 application 0 mixture of
biofertillzers . The seed yield and its N concentration (N%) of diseased plants was
Significantly enhanced by triple inocclauon . The percentage of improvement reached
to 137. 27 % and 35.7 % respectively.