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Effects of vermicompost, vermicompost tea and a bacterial bioagent against Meloidogyne incognita on banana in Egypt

Effects of vermicompost, vermicompost tea and a bacterial bioagent against Meloidogyne incognita on banana in Egypt

S. F. A. Awad-Allah 1 and M. S. Khalil 2

1Nematology Research Department, Agricultural Research Center, Plant Pathology Research Institute, Alexandria, Egypt
2Central Agricultural Pesticides Laboratory, Agricultural Research Center, Alexandria, Egypt

ABSTRACT

The nematicidal potential of vermicompost (VC), vermicompost tea (VCT) and the bacterial bioagent Nemaless® was evaluated against Meloidogyne incognita infecting banana (Musa acuminata) cv. “Grand Nain” as compared to the nematicide fenamiphos 40% EC under laboratory and field conditions. Experiments were carried-out during two successive seasons (2016 and 2017). Results of the laboratory tests showed that the toxicity of VCT and Nemaless® to M. incognita second-stage juveniles (J2) was increased as their concentrations and exposure times were increased. The LC50 of VCT ranged from 30.86 × 103 to 83.77 × 105 mg/l, while the LC50 of Nemaless® ranged from 2.69 × 108 to 3.17 × 108 cell/ml. Results from the field experiments revealed that all of the tested treatments greatly suppressed (P ≤ 0.05) the numbers of galls, egg-masses and nematode final populations. The most potent materials in reducing the numbers of M. incognita in banana soil, in a descending order, were: fenamiphos, Nemaless®, vermicompost and vermicompost tea (VCT).

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Pakistan Journal of Nematology

June

Pakistan Journal of Nematology, Vol. 42, Iss. 1, Pages 1-87

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