Abstract:
The study were conducted in plant protection Department, College of Agricultural Studies ,Sudan University of Science and Technology (SUST ) , in November 2015 in vivo and in vitro ,Wilt is an important disease of potato crop causing significant reduction in yield. In the present study, the pathogenic fungus was isolated from infected plant parts (debris plant) and identified based on morphological and cultural characters as Fusarium solani f. sp.eumartii. to evaluate the effects of , rgel (Solenostemma argel ) powder, Mycorrihzae fungi and Fungicide (Apronstar) 42 in green house against Fusarium solani f. sp.eumartii in potato crop. The result obtain plant height high was (58cm), when soil was treated with fungicide (Abronstar 42), with argel , (56.8cm) and Mycorrihzae (51.5cm) but the lowest plant height was attend when the soil was treated with Fusarium (27.2cm). The shoot ,roots dry weight and yield increased by applied Argel (10g,19g,5g,12g and 20g) and Mycorrihzae (14g,3g,12g,3g and 23g) to sterilized soil compared with the control (4g,2g,2g,1g,and 10g).The chemical control method was found to be the best among all methods used against wilt disease of potato . where chemicals could be combined with botanicals and or biological methods. Such strategy may decrease rate of the fungicides and consequently cost and increased environmental safety.
