Browsing by Author "Ombugadu, A."

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    ASSESSMENT OF BIODEGRADATION POTENTIAL OF PLEUROTUS OSTREATUS ON SOME SELECTED AGRO – WASTES IN KEFFI, NIGERIA
    (Department of Microbiology, Nassarawa State University Keffi,, 2019-05-14) Makut, M.D.; Odonye, E.P.; Galleh, Raphael Peter; Ombugadu, A.
    The agricultural industry is challenged with large tones of lignocellulosic wastes disposal which distort the aesthetical beauty of our environment. This study aimed at assessment of biodegradation potential of Pleurotus ostreatus (P. ostreatus) on some selected agro-wastes in Keffi, Nigeria. The samples (cassava peels (CP), banana leaves (BL), saw dust (SD), yam peels (YP) and groundnut shells (GS) were inoculated with equal proportions of Pleurotus ostreatus for a period of four weeks. The proximate composition, lignocellulosic content and the carbon-nitrogen ratio and pH of the substrateswere determined and compared. Significantly (P < 0.05) was an improvement of protein and crude fibre above the undegraded samples, and protein enhancement was highest in banana leaves (13.29%) and lest in saw dust (2.49%), crude fibre enhancement was highest in banana leaves (32.45%) and lest in yam peels (9.45%). The fungus also delignified the “wastes” with significant (P < 0.05) reduction in the lignin, cellulose and hemicellulose contents. Lignin for instance reduced by 50.00% in CP, 39.49% in BL, 25.58% in SD, 39.12% in YP and 28.19% in GS; Cellulose reduced by 21.32% in CP, 10.57% in BL, 10.93% in SD, 26.44% in YP and 15.88 in GS; Hemicellulose reduced by 21.04% in CP, 18.06% in BL, 15.29% in SD, 26.16% in YP and 26.32% in GS while Fibre reduced by 27.92% in CP, 27.13% in BL, 21.75% in SD, 28.44% in YP and 21.23% in GS.
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    Early Wet Season Distribution of Anopheles Mosquitoes in Keffl Area, Nasarawa State, Nigeria
    (Department of Zoology, Nasarawa State University, Keffi., 2019-08-28) Umbugala, T.A.; Tongjura, J.D.C.; Ombugadu, Ruth Jamila; Hassan, S.C.; Ombugadu, A.; Amuga, G.A.
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    Isolation, Identification and Screening of Pseudomonas Fluorescens from Soil Environment of Keffi, Nasarawa State - Nigeria for the Production of Bio- Fertilizer
    (Department of Microbiology, Nassarawa State University Keffi,, 2017-05-11) Makut, M.D.; Ishaya, I.O.; Ombugadu, A.; Onawola, O.O.; Abikoye, E.T; Mohammed, S.A.
    Bio-fertilizer has been identified as an alternative to chemical fertilizer to increase soil fertility and crop production with no residual harmful effect to the environment.This study on isolation, identification andscreening of Phosphate solubilisationabilityofPseudomonas fluorescens from soil environmentwas carried out from May to September 2018. Soil samples were collected from eight different locations and Pseudomonas strainswere isolated and identified using standard microbiological methods.The 16SrRNA gene sequence analysis of the strain showed maximum similarity of 96% with Pseudomonas fluorescensreference type straindeposited in RDP GenBank. Pseudomonas strains isolated from five different sites showed clear halo zone ranging from 8-18mm. Solubilized Phosphate content produced by Pseudomonas ranged from 207.3 mg/l -273.75 mg/l.
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    Isolation, identification andScreening of Pseudomonas fluorescens from soil environment of Keffi, Nasarawa state - Nigeria for the production of Biofertilizer
    (Department of Microbiology, Nasarawa State University Keffi, 2018-05-05) Makut, M.D.; Ombugadu, A.; Onawola, O.O.; Abikoye, E.T.; Mohammed, S.A
    Bio-fertilizer has been identified as an alternative to chemical fertilizer to increase soil fertility and crop production with no residual harmful effect to the environment.This study on isolation, identification andscreening of Phosphate solubilisationabilityofPseudomonas fluorescens from soil environmentwas carried out from May to September 2018. Soil samples were collected from eight different locations and Pseudomonas strainswere isolated and identified using standard microbiological methods.The 16SrRNA gene sequence analysis of the strain showed maximum similarity of 96% with Pseudomonas fluorescensreference type straindeposited in RDP GenBank. Pseudomonas strains isolated from five different sites showed clear halo zone ranging from 8-18mm. Solubilized Phosphate content produced by Pseudomonas ranged from 207.3 mg/l -273.75 mg/l.