Abstract
In controlling Rhizoctonia solani a causal agent of damping-off to many important crops practical and chemical control are applied. However, these control are not successfully eliminate the disease. Furthermore, chemical application causes environmental problem, harm to human, and fungal resistance. Biological control of fungal disease has been developed. In this study four endophytic bacteria Bacillus sp. AJ02 and Xanthomonas sp. DJ01 isolated from healthy corn and Arthrobacter sp. AP01 and Bacillus sp. DP01 isolated from healthy paddy were employed to control corn seedling damping-off caused by R. solani. It was shown that all bacterial isolates inhibited R. solani growth with several hyphal decrements such as curved, petite, lytic, and swollen hyphae. Bacterial isolates were able to decrease corn seedling damping-off. One isolate Bacillus sp. DP01 reduced more ungrowth corn. Better performance including seedling height, seeding weight and dry weight, and leaf number was shown when the seedling was applied with bacterial isolates.
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