Research article

THE INTEGRATED CONTROL OF EGGPLANT ROOT ROT DISEASE CAUSED BY FUSARIUM SOLANI IN THE GREENHOUSE

Baidaa A. A. Al–Mansoury* and Yehya A. Salih

Online First: February 22, 2023


The study aimed to evaluate the efficacy of the fungicide Topsin-M , Copper sulfate (CuSO4.5H2O) and the bioagents Trichoderma harzianum and T. longibrachiatumin for controlling eggplant root rot disease caused by Fusarium solani under greenhouse conditions in Basrah Province. The results of the pathogenicity test showed that the fungus F. solani reduced the germination of eggplant seeds with apercentage of 20% compared to the control treatment in which the germination rate reached 93.3% . The results also showed that the use of the fungicide Topsin-M at a concentration of 1 g.L-1 led to inhibit F. solani growth on PDA, completely while it inhibited the growth of bioagents T.harzianum and T.longibrachiatum, with percentages of 16.63 and 26.80% respectively. Both bioagents T.harzianum and T.longibrachiatum also achieved a high antagonistic ability against the pathogenic fungus F. solani on PDA, where a degree of antagonism amounted 2 and 1 respectively, according to the Bell scale. The results of the experiment also showed that the treatment of Topsin-M with bioagents T.harzianum and T.longibrachiatum separately and Copper sulfate (CuSO4.5H2O) in the presence of the pathogenic fungus achieved a highest percentage in reducing the infection severity 10.67 and 16.67%, followed by the treatment of the pathogenic fungus and Topsin-M with one bioagents T. harzianum and T.longibrachiatum each separately, where the infection severity amounted to 16.67 and 27.67% compared to the treatment of the pathogenic fungus F. solani alone, in which the infection severity amounted to 71.67% . These result reflected on eggplant growth indicators positively.

Keywords

Copper sulfate, Topsin-M, Trichoderma harzianum, Trichoderma longibrachiatum, Fusarium solani.