Determining the Nematicidal Effects of Some Plant Extracts on Egg Hatchability and Control of Meloidogyne spp. in Cowpea [Vigna unguiculata (L.) Walp]

The Current inquiry was undertaken to judge the nematicidal activity of five plant class: Luffa cylindrica (Linn) MJ Roem, Momordica charantia Linn, Euphorbia hirta Linn, D. scorpiurus (Sw.) Desv. and Starchytarpheta cayennensis L.C. Rich (Schau), forest ash and a artificial insecticide (L. cyhalothrin) on cell hatachability and control of Meloidogyne spp. in cowpea. The effects of five test plants (Luffa cylindrica, Momordica charantia, Euphorbia hirta, Desmodium scorpiurus, and Stachytarpheta cayennensis), forest ash from Gmelina aborea, a artificial insecticide (Karate-Lambda cyhalothrin), and prepared water from faucet (control) were assessed against the cell hatchability and control of Meloidogyne spp. in cowpea (Vigna unguiculata (L.) Walp) in the laboratory and hothouse. The experiments were laid out in a Completely Randomized Design (CRD) accompanying 13 treatments (Hot water extracts (HWE) and pessimistic person extracts (CWE) of L. cyclindrica; E. hirta, D. scorpiurus, S. cayennesis, M. charantia, forest ash, L. cyhalothrin and control) copied 3 times. The result of the workshop experiment showed that the uncertain water extracts of L. cylindrica and HWE of M. charantia significantly (p < 0.05) shy the hatching of nematode cells. Results acquired from the Greenhouse indicated that HWE of E. hirta, CWE of S. cayennesis, CWE and HWE of L. cylindrica considerably improved cowpea yield, (p< 0.05). The liquid extracts reduced the number of galls on the ancestries, nematode populations in the root and soil. The results acquired G. aborea extracts did not distinct considerably with the artificial nematicide – L. cyhalothrin. The leaf extracts of the test plants have potential as sources of horticultural nematicides to reduce the trenchant effects of plant-parasitical nematodes in cowpea fields. There is need for review course especially in the district of nematode population density that keep cause significant damage. Also, the influence of plant extracts in a field environment bear also be determined.

Author(s) Details:

C. C. Ononuju,
Department of Plant Health Management, Michael Okpara University of Agriculture, Umudike, P.M.B 7267 Umuahia, Abia State, Nigeria.

P. O. Nzenwa,
Department of Plant Health Management, Michael Okpara University of Agriculture, Umudike, P.M.B 7267 Umuahia, Abia State, Nigeria.

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Keywords: Plant extracts, cowpea, lambda-cyhalothtrin, inoculums, nematomde

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