Browsing by Author "Jimin, A.A."

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    ASSESSMENT OF RELATIONSHIP BETWEEN SOIL PROPERTIES, OCCURRENCE AND DISTRIBUTION OF AQUATIC MACROPHYTES IN THE FLOODPLAINS OF RIVER BENUE AT MAKURDI
    (Department of Agronomy, Nasarawa State University Keffi, 2020-03-03) Jimin, A.A.; Anjembe, B.C.; Ibrahim, Abdullahi Jaji
    Experiments were carried out in 11 locations during the rainy season of 2016 at River Benue and its floodplains to determine the effect of selected soil properties on the occurrence and distribution of aquatic macrophytes in the water bodies. All sample sites were selected on the basis of weed presence, density and diversity. The soil properties observed were soil pH, texture, exchangeable Calcium, Magnesium, Potassium and Sodium, available Phosphorus, Nitrogen, organic matter content and base saturation. The water quality parameters assessed were: pH, odour, turbidity, total dissolved solids (TDS), dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD) and total oxygen demand (TOD). Results indicated that pH of the soils, clay content, Soil texture,water pH, water turbidity TDS, DO, BOD, COD, TOD were varied in the different locations sampled. There was a negative but significant relationship between the occurrence and density of water hyacinth compared with the amount of sodium (Na) contained in the beds of the sampled areas. Similar trends were also observed between the occurrence and population density of Cyperus difformis and the content of potassium (K) in the bed soils, Pteridium esculentum and percentage clay content and bed organic matter content;occurrence and density of Rorippanasturtum-aquaticum, Ludwigia abbysinica A.Rich, Scleriana umanniana Boek., Eleocharis calva, Limnocha risflava, Cyperush aspan, Salvinianym phellula Desv., Anredera cordifolia and Myriophyllum aquaticum,Cyperus erecta and the bed soil pH.A negative and significant relationship also existed between the observed weeds and percentage clay content and bed organic matter content;the occurrence and density of Pycreus lanceolatris, and potassium content in the soil, the occurrence and density of Ludwigia decurrens and the sodium content in the soil while there were positive and significant relationships between the occurrence and density of Ludwigia hyssopifolia, Sacciolepis Africana and Cardiospermum helicacabum and the percentage contents of Calcium (Ca) and Magnesium (Mg) and the water quality parameters at the study locations.
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    Effect of Selected Water Quality Properties on the Occurrence and Distribution of Aquatic Macrophytes in the Floodplains of River Benue at Makurdi
    (Department of Agronomy, Nasarawa State University Keffi, 2018-04-04) Jimin, A.A.; Ibrahim, Abdullahi Jaji
    A study was carried out in River Benue and 10 sites constituting the floodplains of River Benue to determine the effects of selected water quality parameters on the incidence and infestations of aquatic macrophytes. All water quality properties were analyzed using Standard Procedures. Water pH was observed to be variable, ranging from 5.7 at River Benue at the point at which effluents from BBL are discharged to 7.8 at River Benue. Odour, turbidity, dissolved oxygen, (DO), total dissolved solids (TOD), biochemical oxygen demand (BOD) and chemical oxygen demand (COD), respectively also followed the same trend. No significant relationships existed between the occurrence and density of Azolla pinnata, Cyperus difformis, Kyllinga pumila, Pycreus lanceolatus (Poir.), Ludwigia decurrens, Leptochloa caerulescens Steud., Cardiospermum heliocacabum, Myriophyllum aquaticum, Pistia stratoites, Mariscus longibracteatus, Heliotropium indicum Linn., Sphenoclea zeylonica Gaertn.and Melochia corchorifolia and the water quality parameters at the study locations. However, positively significant relationships existed between the occurrence and density of Cyperus erecta and the pH of the water at River Benue and the amount of dissolved oxygen (DO) in water at the time of collection. There was a positive and highly significant relationship between Polygonium lanigerum R.Br., Heliotropium indicum, Persicaria decipens and Biochemical DO, BOD, COD and COD. Also, a positive and highly significant relationship existed between Ludwigia hyssopifolia and Sacciolepis africana with turbidity of water. The relationship to dissolved oxygen at time of water collection indicated the favorable disposition of these weeds to thrive and do well under conditions of relatively higher dissolved oxygen.
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    Field and Screen House Assessment of Parkia Based Products in the Control of Striga hermonthica in Maize in the Savanna
    (Department of Agronomy, Nasarawa State University Keffi, 2011-06-06) Ibrahim, Abdullahi Jaji; Magani, E.I.; Jimin, A.A.