Bioactivity of Aqueous Extract of Vernonia amygdalina and Peperomia pellucida on Meloidogyne incognita infecting two Telfairia Accessions
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Date
2021
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Abstract
Pot and field trials were conducted at the Teaching and Research farm of University of Ilorin,
Nigeria to determine the efficacy of aqueous extracts of Vernonia amygdalina and Peperomia
pellucida in the management of Root-knot nematode, Meloidogyne incognita infecting two
accessions of Telfairia occidentalis Hook. F. Pots were inoculated with galled roots of Celosia
agentea one week before planting to increase the initial nematode population. The pot trial was
set up in a Completely Randomized Design with five replicates while the layout for the field
experiment was a Randomized Complete Block Design replicated four times. Transplanted twoweek
old seedlings in the pots were inoculated with 10g of infected Celosia galled root before
application of treatment whereas the field was naturally infected. Treatment was applied a week
after transplanting and repeated six weeks after transplanting. Results from the study revealed
that treated plants in both trials had significantly higher number of branches, vine length and
number of pods. Also, the population density and galling of roots were significantly reduced in
treated plots to 3 and 4 against the control which has a gall rating of 7 and 6 respectively in pot and
field. While the improved yield and reduction in nematode population could be traced to the
treatments used, the tolerance of the accessions cannot be discountenanced.
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Keywords
Botanicals, root-knot nematode, Telfairia occidentalis, accessions, seedlings
Citation
Apalowo, O. A., Izuogu, N. B., Baba, H. S., & Mustapha, S., (2021). Bioactivity of Aqueous Extract of Vernonia amygdalina and Peperomia pellucida on Meloidogyne incognita infecting two Telfairia Accessions. African Journal of Agriculture and Allied Sciences (AJAAS), 1 (1) 9-22. A Publication of Faculty of Agriculture, University of Abuja