Biocontrol of Meloidogyne incognita Using Entomopathogenic Nematodes and their Symbiotic Bacteria under Greenhouse Conditions | ||||
| Egyptian Journal of Agricultural Sciences | ||||
| Volume 76, Issue 3, July 2025, Page 81-94 PDF (1.64 MB) | ||||
| Document Type: Research articles | ||||
| DOI: 10.21608/ejarc.2025.450925 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Noha Mohamed Alaa Abu Shady  ; Shaimaa Fathy Abd Elrahman Diab
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| Department of Zoology and Agricultural Nematology- Faculty of Agriculture- Cairo University | ||||
| Abstract | ||||
| Ten entomopathogenic nematode (EPN) strains, five different types of bacteria, oils and nematicide (Vydate) were tested in pots for their antagonistic effects against Meloidogyne incognita (galling, egg masses production and soil population) on eggplant plants. One strain of Steinernema abbasi (S.3), S. arenarium (S.RIO), and three strains of S. carpocapsae were used in greenhouse studies. Additionally, pots containing 2000 RKN J2s were treated with three Heterorhabditis indica strains, two H. bacteriophora strains, and the associated bacterium (Photorhabdus sp.). There was a significant reduction in M. incognita densities in all EPN’s treatments when compared to the check. EPNs and Photorhabdus bacterium decreased soil population up to 99.6 % when treated with S. arenarium (S.RIO) and 99.2 % reduction occurred by H. indica (3 MANGO) treatment and up to 99.5 % soil population reduction in MANGO3 BACTERIA (Photorhabdus sp.) compared to the check. The findings also showed a significant reduction in the number of galls (-46.5% reduction) and egg masses (-65.2% reduction) as compared to the check for the S.3 (S. abbasi) strain. Regarding the plant growth criteria, a decrease was seen in all Steinernema treatments compared to the check, with the exception of the shoot fresh weight and plant length of ATS and all plant growth criteria of S.3, S.RIO isolates, and Vydate when compared with the nematode alone. Except for CITRUS 5 isolates, which showed insignificant count reduction in shoot fresh and dry weights but the contrary was seen in root fresh weight. Heterohabditis treatments enhanced shoot fresh and dry weights. | ||||
| Keywords | ||||
| Meloidogyne incognita; eggplant; entomopathogenic nematodes; Photorhabdus sp | ||||
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