Control of leaf blight disease of maize using two bioagents and some natural plant oils [electronic resource].

Includes reference.

Four of each of (Bacillus sp and Streptomyces sp.), isolated from maize phyllosphere and some natural plant oils (Jojoba, Garlic and Castor) as well as El-Kanz 2000 (a natural compound) were evaluated for their antagonistic efficiency against Helminthosporium turcicum causing leaf blight disease of maize under laboratory conditions. As plant oils El-Kanz 2000 (1%) is being the best effective treatment with inhibition zone in diameter (30 mm), followed in descending by Garlic oil (2%), Jojoba oil (15%), and Castor oil (40%) with inhibition zones in diameters (24,19,18 mm, respectively). On the other hand, Bacillus sp. (No.4) gave the highest inhibition zone followed by streptomyces sp. (N03) . Application of all control materials mentioned above were used simultaneously with H. turcicum showed the highest effect on leaf t light disease incidence followed by both application (72h. before and 72h. after H. turcicum spores spraying) under greenhouse conditions. Mixture of Bacillus sp. and Streptomyces sp (1:1 v/v) was the most efficient treatment follower. by El-Kanz 2000 after the chentical fungicide.

Summary in Arabic.

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