Browsing by Author "Apalowo, O. A"

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    Bioactivity of Aqueous Extract of Vernonia amygdalina and Peperomia pellucida on Meloidogyne incognita infecting two Telfairia Accessions
    (2021) Apalowo, O. A; Izuogu, N. B; Baba, H. S; Mustapha, S.
    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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    Investigating the potential use of plant-based compounds as environmentally friendly management strategies for controlling root-knot nematodes in cabbage crops
    (. Journal of Applied Life Sciences and Environment,, 2024) Baba, H. S.; Apalowo, O. A
    ABSTRACT. Vegetables are infected by root knot nematodes, especially Meloidogyne incognita, which results in both quantitative and qualitative losses. This study’s objective was to assess the effectiveness of plant extracts from Senna alata and Tamarindus indica in controlling cabbage-infecting root knot nematodes. The experiment was carried out to determine the effect of aqueous and powdered extracts of T. indica and S. alata on the control of root knot nematodes in two cabbage varieties. The test plants underwent phytochemical screening. Data were gathered on plant height, shoot weight, root weight, yield and soil nematode populations. All numerical data were subjected to analysis of variance using the GENSTAT statistical programme. Treating F1 Majesty and F1 Minotaur with powdered T. indica extract resulted in a significantly better (p>0.05) growth and yield (62.77 cm and 53.77 cm) than the other treatments. Significant variations were found between the shoot, root and yield weights of treated plants and their control counterparts. The positive control had the highest number of galled roots in both varieties (6.25 and 8.27). The treated plants performed much better than the control plants. The experiment also revealed some compounds, such as hexadecanoic, butyric and octadecadienoic acid. Based on this study’s findings, it is advisable to make use of these botanicals (T. indica and S. alata) on root knot-infested farms, as they are cheap, available and eco friendly alternatives to chemical nematicides, which are expensive and not environmentally friendly. Keywords: infecting; phytochemical; screening; significant; varieties.