Ndifon Elias Mjaika1*, Emmanuel Ankrumah1, Chimdi Grace Ovute2 and Anosike Francis Chidi1
1Alex Ekwueme Federal University Ndufu-Alike Ikwo, PMB 1010, Abakaliki, Nigeria
2Federal Polytechnic Bauchi, School of Agricultural Technology, Department of Agricultural Technology, PMB 0231 Bauchi, Bauchi State, Nigeria
Abstract
Bambara groundnut (Vigna subterranea (L.) Verdc) is an excellent source of human and animal
foodstuff and pharmaceutical resources but its production is hampered by fungi diseases. Synthetic pesticides, botanicals and
bio-control sub-trials were conducted in vitro to control Fusarium oxysporum f.sp. voandzeia. The sub-trials were
each set up using completely randomized design with three replications. Data were collected on radius of the growth and area
covered by the colonies. Percentage inhibition of F. oxysporium (at 120 hours after inoculation (HAI)) using Trichoderma isolates
ranged from 16 – 87%. Significantly (P ≤ 0.05) less area of medium was covered by the pathogen due to presence of T. harzianum
NSBM, T. harzianum AIM16, T. harzianum AIM5, T. harzianum BGMP, T. virens BGMZ2, T. harzianum ZXMZ isolates
and check compared to the control. Percentage inhibition of F. oxysporium (at 144 HAI) using Mancozeb and Copper(I)oxide+Metalaxyl ranged
from 26 – 100% and both pesticides inhibited Fusarium significantly (P ≤ 0.05) more than the control. Percentage inhibition of F. oxysporum
at 144 HAI) using Eucalyptus, mahogany and cashew gums ranged from 5 – 100%. Eucalyptus 100% controlled F. oxysporum significantly more than
all other treatments followed by the check, Eucalyptus 10% and Mahogany 100% (which were at par).
Keywords:
biocontrol, pesticides, plant extracts, Trichoderma, underutilized crops
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