Browsing by Author "Baba, H. S."

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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.
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    Pathogenicity and Control of Phomopsis sp. Associated with Yam Rot Using Bark Extracts of Mangifera indica L. and Parinari polyandra Benth.
    (Faculty of Natural Sciences Al-Hikmah University, Nigeria, 2017) Ahmed, O.; Baba, H. S.; Yusuf, S. Y.; Lawal, R. A.; Adebayo, O. V.; Ojomu, J. O
    The antifungal property of Mangifera indica and Parinari polyandra bark extracts against Phomopsis sp. isolated from rotting yam tubers was evaluated. Stock solutions prepared by dissolving 1 g of each extract in 100 ml of sterile water (i.e.1% w/v) were applied at 1:2, 1:4, and 1:6 (i.e. 1 part of the stock to 2, 4, and 6 parts of the culture medium v/v) in-vitro. The extracts were later applied at 0.5%, 1%, and 1.5% w/v as a coating on the yam tubers. The plant extracts significantly suppressed the growth of the fungus in vitro and reduced rot development in healthy yam tubers. The percentage inhibition of growth of the test fungus on medium treated with Parinari polyandra bark extract ranged between 10.50 – 21.35, 19.52 – 43.15, 29.41 – 50.14, 33.18 – 51.92 and 27.71 – 47.30 for concentration range between 1:6v/v – 1:2v/v of the stock solution at days 3, 5, 7, 9 and 11 of plating respectively. Percentage inhibition of growth of the fungus on Mangifera indica extract treated medium also ranged between 11.02 – 39.06, 34.93 – 49.32, 34.45 – 52.94, 38.37 – 54.18 and 31.88 – 50.42 for the same concentration range and days after plating respectively. The study showed the potential of these plant extracts in the control of post-harvest rots of yam tubers.
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    Plant parasitic nematodes associated with selected agricultural soils in Kwara State, Nigeria.
    (Published by the Faculty of Agriculture, University of Ilorin, Nigeria., 2020) Ahmed, O.; Izuogu, N. B.; Baba, H. S.; Kalejaiye, N. A.
    ABSTRACT Plant parasitic nematodes have caused huge yield loss on all agricultural crops. Knowledge of the type and quantity of these pathogens in soils is an indication of the risk of disease development in the crops grown on the soils. This study was carried out to determine the plant parasitic nematode composition of selected agricultural soils in Kwara State, Nigeria. Three sample locations from each of the forest and savannah agro-ecological zones of the state were selected for the study. Soil samples were taken from the rhizosphere of five crops commonly grown in each of the six sample locations (Celosia sp. Cowpea, Maize, Soybean and Teak) using soil auger. Nematodes were extracted using the modified Bearmann technique and the nematodes were identified using standard identification key. The identity of the nematodes was confirmed at the International Institute for Tropical Agriculture (IITA), Ibadan. A total of six nematode genera namely, Meloidogyne sp., Helicotylenchus sp., Scutellonema sp., Pratylenchus sp., Rotylenchus sp., and Tylenchus sp. were isolated with Meloidogyne sp. having the highest frequency of occurrence in most of the sampled locations and crops. The implication of nematodes in agricultural soils is discussed. Key words: Nematodes; Agricultural soils; Kwara State; Agro-ecology