Dry root rot disease of citrus caused by Fusarium solani (Mart.) is one of
the most serious diseases attacked citrus trees especially that cultivated in new
reclaimed lands in Egypt , it has been estimated to affect 8.9% of lime trees
and caused 39.6% loss in fruit yield (El- Mohamedy, 1998) . Such disease of
citrus was reported to attack all citrus varieties (El-Mohamedy, 1998; Catara
and Polizzi, 1999).). Control of this disease depends mainly on fungicides
application (El-Mohamedy, 1998 and Verma et al., 1999).Meanwhile
fungicides always desirable due to potential hazards to the environment.
Among the recent recommended trials for controlling soil borne pathogens
other than fungicides, biological and soil amendment means individually or in
combination were recommended.