Valley bottom soils of the sub-humid tropical Southwestern Nigeria on basement complex: Characteristics and classification

Fagbami, Ayodele; Ajayi, Francis Olayiwola

doi:10.1080/00380768.1990.10414983

Cited by 16 publications

(13 citation statements)

References 19 publications

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“…There is limited information on their detailed specific characteristics that could enable their identification for specific agricultural utilisation (Fagbami and Ajayi 1990;Ogban and Babalola 2003). In the literature, little is known about the irrigation quality of surface water of inland valleys of the study area, though there have been studies on the water quality of other surface and groundwaters.…”

Section: Introductionmentioning

confidence: 99%

Assessment of surface water quality of inland valleys for cropping in SW Nigeria

Aboyeji

Ogunkoya

2015

Appl Water Sci

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Inland valley agro-ecosystems which are a category of wetlands have potential for sustainable crop production relative to uplands. A major challenge to their utilisation in the study area is their heterogeneity in hydrology, morphology, soil types and agro-economy. The study assessed the surface water quality of three typologies of the agro-ecosystems-amphitheatre-like valley-heads (Am), valley-side (VS), and low depression (LD)-for cropping. Surface water of six sites were sampled during the wet and dry seasons. The physicochemical properties and metal concentrations of the samples were analysed. Descriptive statistics and water quality indices were used to assess the suitability of the waters of the agro-ecosystems for cropping. Results showed that the valleys have neutral to slightly alkaline waters. Values of physicochemical parameters are generally within the acceptable range for cropping. The concentration of major cations varied across the inland valley types, but exhibited similar characteristics within each valley. The dominance of the major cations is in the order of Na [ Ca [ K [ Mg. ANOVA results indicated that there is no significant difference in the concentration of heavy metals across the valleys (F = 2.044, p = 0.138, a = 0.05). Generally, most of the physicochemical parameters and trace metals have low concentrations and are non-toxic to plants. Values of water quality indices (sodium adsorption ratio, soluble sodium percentage, total dissolved solids and permeability index) indicated that the concentrations of minerals in waters across the valley typologies are generally within permissible limits for cropping.

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Section: Introductionmentioning

confidence: 99%

Assessment of surface water quality of inland valleys for cropping in SW Nigeria

Aboyeji

Ogunkoya

2015

Appl Water Sci

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“…Consequently, the prefix "aeric" can be used to describe these soils. Fagbami and Ajayi (1990) used the prefix `ustic' to describe similar soils, mostly WTIII soils in southwestern Nigeria. Although the long priod of drought (dry season) which follows that of high WT (rainy season) may inhibit the development of aquic characteristics in WTIII (Moormann and van der Wetering, 1985), high soil water potential due probably to high capillary fringe does not support an `ustic' sub-groups, which is used for hydromorphic soils that have a matrix chroma of 2 or more, yet periodically subject to saturated conditions.…”

Section: Classification Of the Soilsmentioning

confidence: 99%

Characteristics, Classification And Management Of Inland Valley Bottom Soils For Crop Production In Subhumid Southwestern Nigeria

Ogban¹,

Babalola²

2009

Agro-Science

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“…This is due to their heterogeneity in terms of hydrology, morphology, soil types, and agro-economy (Ogunremi, Okusami, Olaniyan, & Nwankwor, 2000;Thenkabail & Nolte, 1996). There is limited information on the characteristics of inland valleys that could enable ready identification for specific agricultural utilization (Fagbami & Ajayi, 1990;Ogban & Babalola, 2003). The emergent challenge is how to expand inland valley utilization, and increase agricultural production with a view to enhancing food security.…”

Section: Introductionmentioning

confidence: 97%

Hydro-period dynamics of some inland valley agroecosystems in southwest Nigeria

Aboyeji

2016

African Geographical Review

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The potential use of inland valley ecosystems (a category of wetlands) for cropping has not been fully exploited due to their heterogeneity in hydrology, morphology, soil types and agro-economy. The study employed the hydro-period approach to investigate the dynamics of surface waters of six inland valley sites. Hydrographs and hydro-periods of the sites were determined using water-level fluctuation data collected using staff gages. Results show that water level rose gradually from the beginning of the rain season, peaked at the end of the season, and receded gradually until the hydrological peak of dry season in amphitheatre and valley-side valley types. In the low depression valleys, the plots indicate a more instantaneous response to rainfall events with little groundwater flow. The work concluded that amphitheatre and valley-side valleys types are perennial with high base flows and low flow variability, and hence should be suitable for year-round cropping with little or no application of irrigation. On the other hand, the stage-duration curves of the depression valleys are characteristics of seasonal streams occurring in low-sloped topography with largely rain-caused floods, low base flow, and high flow variability. Application of irrigation may be required for dry season cropping in these valleys.

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Valley bottom soils of the sub-humid tropical Southwestern Nigeria on basement complex: Characteristics and classification

Cited by 16 publications

References 19 publications

Assessment of surface water quality of inland valleys for cropping in SW Nigeria

Assessment of surface water quality of inland valleys for cropping in SW Nigeria

Characteristics, Classification And Management Of Inland Valley Bottom Soils For Crop Production In Subhumid Southwestern Nigeria

Hydro-period dynamics of some inland valley agroecosystems in southwest Nigeria

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