Influence of Seasonal Variations on Population Dynamics of Phyto-Parasitic Nematodes in Soil and Roots of Bell Pepper (Capsicum annuum L.) in Otari, Rivers State, Nigeria
Ekine Emmanuel Green *
Department of Biology, Federal University Otuoke, Bayelsa State, Nigeria.
Ezenwaka Chinonye Oluchi
Department of Biology, Federal University Otuoke, Bayelsa State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Weather instability affects nematode proliferation in soil, affecting plant growth. Identifying endemic species and favourable seasons can guide farmers in cultivating crops during specific seasons, minimizing infections and improving yield. A survey to evaluate the influence of seasonal disparity on plant parasitic nematodes population in soil and roots of bell pepper (Capsicum annuum L.) was carried out during dry and rainy seasons in Otari, Abua/Odual Local Government Area of Rivers State, Nigeria. Five bell pepper cultivated fields were randomly selected and a total of 300 soil samples were collected and assayed for soil nematodes. The soil samples were collected using a soil auger at 0-15 cm depth, and roots were collected by the use of sterilized kitchen knife simultaneously for the isolation of nematode. The modified sieve plate method was employed for the extraction of nematodes. Nematode identification was carried out using a pictorial key. A total of 2,220 nematodes from 11 genera were reported in this study, among which 1,290 (58.1%) were recovered during the rainy season while the dry season showed 930 (41.9%) nematodes. Nematode population vary significantly between seasons in soil (P = .13) and roots of bell pepper (P = 3.90), with Heterodera species having higher density (1.44 and 1.03) during the rainy and dry seasons respectively in the soil. High density of Meloidogyne (0.97) was recorded during the rainy season and Radopholus spp (1.40) during the dry season in the root of bell pepper plant. The study showed that seasonal variations impacted on nematode population abundance in fields, establishing that nematodes are responsive to every unsteady condition of the soil environment resulting from seasonal disparity, and only species who adapt rapidly survive. Farmers should increase crop cultivation during the rainy season to boost yield, as nematodes population decline as rainfall increases.
Keywords: Bell pepper, nematodes, population dynamics, seasonal disparity, soil
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References
Imafidor HO, Ekine EG. A survey of the nematode pests of the crop cassava (Manihot esculenta) in Rivers State, Nigeria. African Journal of Applied Zoology & Environmental Biology. 2016;18:17-18.
Gboeloh LB, Elele K, Ekine EG. Plant parasitic nematodes associated with cucumber (Cucumis sativa) cultivated in Abua/Odual local government area of Rivers State, Nigeria. International Journal of Science, Technology, Enginerring, Mathematics and Science Education. 2019;4(1):23-31.
Noling JW. Nematode management in tomato, pepper and eggplant. EN-032 Florida corporative extension service, University of Florida. 2009;492-520.
Orluoma CA, Ekine EG, Karibi EI. Populations of phyto-parasitic nematodes on groundnut (Arachis hypoeal) cultivated fields in Egbolom, Abual/Odual Local Government Area, Rivers State, Nigeria. FNAS Journal of Scientific Innovations. 2023;4(2):19-26.
Cedergreen N, Norhave NJ, Svendsen C, Spurgeon DJ. Variable Temperature Stress in the Nematode Caenorhabditis elegans and its Implication for Sensitivity to an Additional Chemical Stressor. PLOS ONE. 2016;11 (1):10-17.
Dabur KR, Bajaj HK. Nematode trophic groups as affected by zero lillage in rice wheat cropping system. Jaipur. 2002;81-84.
Ekine EG, Gboeloh LB, Imafidor HO, Elele K. Nematode community composition and species diversity from pre-cropping to harvest of Cucumber (Cucumis sativa) in Abua, Rivers State. Nigeria Journal of Nematology. 2020;5:19-29.
Renco M, Liskova M, Cervkova A. Seasonal fluctuation on the nematode communities in a hop garden soil. Helminthologia. 2010;47(2):115-122.
Talwana HL, Butseya MM, Tusime G. Occurrence of plant parasitic nematodes and factors that enhance population build up in cereal-based cropping system in Uganda. African Crop Science Journal. 2008;16(2):119-131.
Hassan J, Chishti MZ, Ahmad I, Iqbal M, Lone BA. Seasonal nematode population density on maize and mustard. World Applied Science Journal. 2009;6(6):734-736.
Southey JF. Laboratory method for work with plant and soil nematodes. Her majesty’s Stationery office, London. 1986; 201.
Mekete T, Dababa A, Sekora N, Akyazi F, Abebe E. Identification Key for agriculturally important plant-parasitic nematodes identification course. A manual for nematology. 2012;109.
Cerevkova A, Cagnan L. Seasonal effect on the population dynamics of soil nematodes in a maize field. Journal of Central European Agriculture. 2012;13 (4): 739-746.
Boland GJ, Melzer MS, Hopkin A, Higgins V, Nassuth A. Climate change and plant disease in Ontario. Canadian Journal of Plant Pathology. 2004;26(3):335-50.
Daramola FY, Malgas R, Malan AP. Occurrence and seasonal changes in the population of root-knot nematodes on honeybush (Cyclopia sp.). Helminthologia. 2021;58(2):202-212.
Arun KY. Soil moisture effect on the activity of three entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) isolated from Maghalaya, India. Journal of Parasite Distribution. 2012;36(1):94-98.
Andrea C, Ludovit D. Seasonal effect of population dynamics of soil nematodes in a Maize Field. Journal of Central European Agriculture. 2012; 13(4):739-746.
Ekine EG. Impact of poultry manure on soil nematode dynamics and yield of bell pepper (Capsicum annuum) in Abua/Odual Local Government Area, Rivers State. PhD thesis, Ignatius Ajuru University of Education, Port Harcourt, Rivers State, Nigeria; 2020.
Wall JM, Virginia RA. Control on soil biodiversity sight from extreme Environment. Applied Soil Ecology. 2009; 13:137-145.
Wang KH, McSorley R, Fasilo TR. Foliar and root-knot nematodes as pest of ornamental plants. Bug. Tutorials, University of Florida Press. 2006;188.
Shokoohi E, Mashela PW, Iranpour F. Diversity and seasonal fluctuation of Tylenchid plant parasitic nematode in association with alfalfa in Kerman Province of Iran. Journal of Nematology. 2019;51:1-14.
Elele K. Influence of organic amendment on soil nematodes community composition and infectivity on eggplant (Solanumm elongena L.) in Rivers State. PhD Research Thesis, University of Calabar, Nigeria. 2016;67-68.
Deming L, Qi L, Fangming L, Young J, Wenju L. Vertical distribution of soil nematodes in an age sequence of Caragan microphylla plantation in the Horqin Sandy land. Ecological Research. 2006;22:49-56.