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Pakistan Journal of Biological Sciences
Year: 2001  |  Volume: 4  |  Issue: 8  |  Page No.: 995 - 999

Effect of Fungal Filtrates of Aspergillus Species on Development of Root-knot Nematodes and Growth of Tomato (Lycopersicon esculentum Mill.)

Amer-Zareen, M. Javed Zaki and Nargis Jamil Khan    

Abstract: Seven species of Aspergillus were screened for their biocontrol potential against Meloidogyne javanica root-knot nematodes on tomato under greenhouse conditions. Culture filtrates (CF) of Aspergillus niger, A. terreus and A. tamarii improved plant height, root length and fresh shoot weight when used as soil drench or bare root dipped seedlings. Besides, maximum reduction in gall formation and egg mass production was obtained by CF of A. niger, A. fumigatus and A. terreus in both soil drench and bare root dip seedlings compared to control. A. niger was found most successful in minimizing root and soil densities of root-knot nematodes in soil drench treatments compared to other test CF and control. Bare root dipped seedlings by A. nidulans CF reduced the root-knot development in tomato roots and in rhizosphere.

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