Soil properties of a toposequence in the moist semi-deciduous forest zone of Ghana

Owusu‐Bennoah, E.; Awadzi, Theodore W.; Boateng, Enoch; Krogh, Lars Brian; Breuning‐Madsen, Henrik; Borggaard, Ole K.

doi:10.4314/wajae.v1i1.40565

Cited by 25 publications

(25 citation statements)

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“…The low aluminium for iron substitution rate suggests formation of the pisolite iron oxides in an environment low in soluble aluminium. Accordingly, the pH in the Nzima soil is acidic but not very strongly acidic (pH CaCl2 4.2-5.2, Table 2) and the aluminium saturation is low (1-7%) (Owusu-Bennoah et al, 2000). Consequently, the pisolites must have been formed through a redox process in accordance with previous suggestions for formation of pisolites and ironstone crusts (McFarlane, 1991;Dos Anjos et al, 1995;Singh and Gilkes, 1996;Brown et al, 2003).…”

Section: Pisolite Characteristicsmentioning

confidence: 57%

“…1). The landscape is gently rolling and the soils on the slopes form one of the most common catenas in the tropical moist semi-deciduous forest zone in Ghana, which is the Bekwai/Nzima-Oda association according to the Ghanaian soil classification system (Ahn, 1970;Owusu-Bennoah et al, 2000). The soil parent materials are almost exclusively Pre-Cambrian rocks, predominantly consisting of phyllites, greywackes, schists, sandstones and gneisses (Adu, 1992).…”

Section: The Study Sitementioning

confidence: 99%

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Characteristics and genesis of pisolitic soil layers in a tropical moist semi-deciduous forest of Ghana

Breuning‐Madsen¹,

Awadzi²,

Koch³

et al. 2007

Geoderma

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Section: Pisolite Characteristicsmentioning

confidence: 57%

Section: The Study Sitementioning

confidence: 99%

Characteristics and genesis of pisolitic soil layers in a tropical moist semi-deciduous forest of Ghana

Breuning‐Madsen¹,

Awadzi²,

Koch³

et al. 2007

Geoderma

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“…Orthic Acrisols and Xanthic Ferralsols are acid (pH < 5.5) low fertility status soils containing small amounts of plant available nutrients (particularly nitrogen (N), phosphorus (P) and potassium (K)), with low cation exchange capacity (e.g., Ferralsols < 16 cmol kg −1 ) and base saturation (e.g., Acrisols < 50%). Drainage is related to topography, with poorly drained, flood prone clay to loamy sand textured Gleysols in valley bottoms, and well drained Acrisols and Ferralsols respectively on lower and upper slopes (Annan-Afful et al, 2004;Annan-Afful et al, 2005;Owusu-Bennoah et al, 2000).…”

Section: Agro-ecological Conditions In Ghanamentioning

confidence: 99%

Climate, soil and land-use based land suitability evaluation for oil palm production in Ghana

Rhebergen

Fairhurst²,

Zingore

et al. 2016

European Journal of Agronomy

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a b s t r a c tIn the past decade, oil palm (Elaeis guineensis Jacq.) has become the world's most important oil crop. The large demand for palm oil has resulted in a rapid expansion of oil palm cultivation across the globe. Because of the dwindling availability of land in Southeast Asia, most expansion of the industry is expected in Central and South America and sub-Saharan Africa, where land with suitable agro-ecological conditions is available. Using Ghana as a case study, a method for evaluating areas that are both suitable and available for oil palm production is presented. Our assessment used spatial data and GIS techniques, and showed that areas with suitable climatic conditions (annual average water deficit <400 mm) is about 20% greater than was previously identified. The observed differences are the result of using different methods to determine suitability, and climate change. A major climatic factor limiting suitability for oil palm production in Ghana is the annual water deficit, with the most suitable areas located in the rainforest and semi-deciduous forest zones with higher rainfall in southern Ghana. Opportunities for large-scale oil palm plantation development is limited, however, because of the lack of availability of large and contiguous tracts of land that are required for commercial plantation oil palm development. A feasible strategy for oil palm expansion is therefore smallholder production, which can make use of smaller parcels of land. Alternatively, oil palm production in Ghana can be increased by yield intensification on land already planted to oil palm. This can also reduce the requirement for further land clearance for new plantations to meet the growing demand for palm oil. Such assessments will be essential for guiding government policy makers and investors considering investments in oil palm development.

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“…The climate is humid tropical dominated by two rainy seasons. Average annual rainfall is 1179 mm with 80% falling from March to mid July and from September to November (Owusu-Bennoah et al, 2000). Temperatures vary little during the year, reaching a maximum of 28-29 °C in February/March and a minimum of 25-26 °C in July/August (Christiansen & Awadzi, 2000).…”

Section: Methodsmentioning

confidence: 99%

Aluminium release from acidic forest soil following deforestation and maize cultivation in Ghana, West Africa

Behrensdorff¹,

Elberling²,

Krogh³

2009

West African Journal of Applied Ecology

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Acidic tropical soils often have high Al 3+ concentrations in soil solutions, which can be toxic to plants and, thereby, reduce agricultural yields. This study focuses on the impact of deforestation and cultivation on the short and long-term Al geochemistry of acidic soils in Ghana, West Africa. Site-specific investigations were made at two sites covered with forest and one site cultivated with maize (Zea mays L.). The capacity of soil to resist acidification was investigated in a leaching experiment and the corresponding release of aluminium quantified. Field results revealed a significant aacidification and Al mobility in the root zone of the cultivated site as compared to the forest sites. The leaching experiment showed that further acidification would significantly enhance Al-release and, consequently, the presence of Al 3+ in soil solution. It is concluded that deforestation and cultivation in the study area has resulted in increasing levels of Al3+ and a lowering of the soils capacity to resists further acidification. This may be critical in relation to land-use management and long-term agricultural productions.

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Soil properties of a toposequence in the moist semi-deciduous forest zone of Ghana

Cited by 25 publications

References 0 publications

Characteristics and genesis of pisolitic soil layers in a tropical moist semi-deciduous forest of Ghana

Characteristics and genesis of pisolitic soil layers in a tropical moist semi-deciduous forest of Ghana

Climate, soil and land-use based land suitability evaluation for oil palm production in Ghana

Aluminium release from acidic forest soil following deforestation and maize cultivation in Ghana, West Africa

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