Nematicidal potential of three plant materials against Root-Knot Nematode (Meloidogyne incognita) infestation on Tomato (Solanum lycopersicum)
Journal Title: International Journal of Life Science - Year 2016, Vol 4, Issue 1
Abstract
Pot trial experiment was conducted at the College of Crop and Soil Sciences, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria between the months of June and October, 2014. The study was designed to determine; the nematicidal effect of leaf powders of Aspilia africana (African marigold), Terminalia catappa (Indian almond) and Cymbopogon citratus (Lemon grass) against nematode infestation on tomato; appropriate time of application of plant materials and to compare the effect of the plant materials with synthetic nematicide (carbofuran). The experiment consisted of six treatments with six replicates, arranged in a Completely Randomized Design. Parameters recorded were number of leaves, plant height, number of fruits, weight of fruits, fresh shoot weight, fresh root weight, number of galls in roots, number of nematodes egg in root and number of nematodes juvenile in soil. Result obtained showed that treatments at 1 and 15 days after inoculation (DAI) significantly reduced nematode population in some parameters than 30 DAI, although in some cases, there were no significant differences between treated and untreated. Thus, different powders significantly increased tomato yield when compared with untreated (nematode alone). However treatments with Aspilia africana appeared to be most effective, as it recorded least number of galls irrespective of periods of application, also for eggs in the roots and nematode juvenile in soil. Plants treated with nematicide ranked second in reducing number of galls, eggs in roots and nematode juvenile in soil. Aspilia africana performed better than Terminalia catappa and Cymbopogon citratus leaf powders, suggesting that they could be used in the management of root-knot nematodes in tomato production as alternative to chemical nematicides in view of their environmental hazard and pollution problems. Keywords:
Authors and Affiliations
EP, Ekpenyong, CC Ononuju, EA Ikwunagu
Keywords
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