Nematicidal Effects Of Some Plant Extracts On Egg Hatchability And Control Of Mel Oidogyne Spp. In Cowpea (Vigna Unguiculata (L.) Walp.):- Nzenwa, Peter O.
ABSTRACT
The
effects of cold and hot aqueous extracts of 5 test plants (Lujfa cylindrica,
Momordica charantia, Euphorbia hirta, Desmodium scorpiurus and Stachytarpheta
cayennensis}, wood ash, a synthetic nematicide (karate-Lambdacyhalothrin) and a
tap water treated control were evaluated against the egg hatchability and
control of Meloidogyne spp in cowpea (Vigna unguiculata (L.) Walp) in the
laboratory and green house. The experiments were laid out in a completely
randomized design (CRD) with 13 treatments; (Hot water extracts (HWE) and cold
water extract (CWE) of L. cylindrica; E. hirta, D. scorpiurus, S. cayennensis,
wood ash, karate (Lamdacylalothrin) and control) replicated 3 times. The result
of the laboratory experiment showed that the hot and cold water extracts of L
cylindrica, and HWE of M. charantia, significantly (p <0.05) inhibited the
hatching of eggs of the pathogen. Result obtained from the Green house
experiments indicated that HWE of E. hirta, CWE of S. cayennensis and CWE and
HWE of L cylindrica significantly increased yield, (P< 0.05). The aqueous
extracts reduced the number of galls on the roots, nematode populations in the
root and soil samples. The results obtained with these extracts did not differ
significantly with the synthetic nematicide (Karate - lambdacyhalothrin). The
leaf extracts of the test plants could therefore be harnessed as source of
nematicides of plant origin to control the devastating effects of plant -
parasitic nematodes in cowpea field by local farmers.
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NZENWA, N (2023). Nematicidal Effects Of Some Plant Extracts On Egg Hatchability And Control Of Mel Oidogyne Spp. In Cowpea (Vigna Unguiculata (L.) Walp.):- Nzenwa, Peter O.. Repository.mouau.edu.ng: Retrieved Nov 21, 2024, from https://repository.mouau.edu.ng/work/view/nematicidal-effects-of-some-plant-extracts-on-egg-hatchability-and-control-of-mel-oidogyne-spp-in-cowpea-vigna-unguiculata-l-walp-nzenwa-peter-o-7-2
NZENWA, NZENWA. "Nematicidal Effects Of Some Plant Extracts On Egg Hatchability And Control Of Mel Oidogyne Spp. In Cowpea (Vigna Unguiculata (L.) Walp.):- Nzenwa, Peter O." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 08 Nov. 2023, https://repository.mouau.edu.ng/work/view/nematicidal-effects-of-some-plant-extracts-on-egg-hatchability-and-control-of-mel-oidogyne-spp-in-cowpea-vigna-unguiculata-l-walp-nzenwa-peter-o-7-2. Accessed 21 Nov. 2024.
NZENWA, NZENWA. "Nematicidal Effects Of Some Plant Extracts On Egg Hatchability And Control Of Mel Oidogyne Spp. In Cowpea (Vigna Unguiculata (L.) Walp.):- Nzenwa, Peter O.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 08 Nov. 2023. Web. 21 Nov. 2024. < https://repository.mouau.edu.ng/work/view/nematicidal-effects-of-some-plant-extracts-on-egg-hatchability-and-control-of-mel-oidogyne-spp-in-cowpea-vigna-unguiculata-l-walp-nzenwa-peter-o-7-2 >.
NZENWA, NZENWA. "Nematicidal Effects Of Some Plant Extracts On Egg Hatchability And Control Of Mel Oidogyne Spp. In Cowpea (Vigna Unguiculata (L.) Walp.):- Nzenwa, Peter O." Repository.mouau.edu.ng (2023). Accessed 21 Nov. 2024. https://repository.mouau.edu.ng/work/view/nematicidal-effects-of-some-plant-extracts-on-egg-hatchability-and-control-of-mel-oidogyne-spp-in-cowpea-vigna-unguiculata-l-walp-nzenwa-peter-o-7-2