Soil properties and mineralogy in relation to land use on a sedimentary toposequence in south-eastern Nigeria

Eshett, E. T.; Omueti, J. A. I.; Juo, A. S. R.

doi:10.1017/s0021859600085828

Cited by 19 publications

(11 citation statements)

References 7 publications

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“…Clay increased with soil depth in all the profiles which is attributable to clay migration as a result of eluviation and illuviation process. This was in conformity to the findings of Eshett (1989) for soils underlain by Falsebedded Sandstone. Clay content had low variation across the profiles of the land use types.…”

Section: Resultssupporting

confidence: 92%

Differences in carbon forms under two land use types in Abia State, South-east Nigeria

Ndukwu¹

2018

AST

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The storage of carbon in the soil helps to sustain the ecosystem of our environment. However, this study was to determine the differences in carbon forms (total carbon, organic carbon and inorganic carbon) under selected forest and pasture land use types in Abia State, Nigeria. Two profile pits were sung on each of the land use types using free survey technique. The profile pits were sampled based on horizon differentiation for routine and special laboratory analyses. The data obtained were statistically analyzed for coefficient of variation and correlation. Total carbon had mean of 2.07% and 2.12% for profiles 1 and 2 under pasture land use and 2.46% and 2.45% for profiles 3 and 4 under forested land use. Organic carbon as indicated by the mean was higher in forest land (profile 3=1.85%, profile 4=2.09%) than in pasture land (profile 1=1.37%, profile 2=1.40%) while inorganic carbon was higher in pasture land (profile 1=0.70%, profile 2=0.72%) over forest land (profile 3= 0.39 %, profile 4= 0.36 %). Organic carbon had high variation (≥45.97% ≤ 49.38%) in profiles of the pastured land use while it had low -moderate variation (≥12.55% ≤ 27.03%) in profiles of forested land use. Also, inorganic carbon recorded moderate variation (≥16.12% ≤ 25.95%) in profiles of pasture and forest land use types. The forest land use type was determined to contain more forms of carbon when compared with the pasture land use type.

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Section: Resultssupporting

confidence: 92%

Differences in carbon forms under two land use types in Abia State, South-east Nigeria

Ndukwu¹

2018

AST

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“…This result reflects the geologic formation and is typical of the soils of southeastern Nigeria (Igwe, 1995). The textural classification of the studied soil is in line with Smyth andMontgomery, (1962) Ashaye, (1969) in Western Nigeria and Eshett, (1985) in Eastern Nigeria who opined that the texture of surface horizon of soils of the humid tropics is dominantly loamy sand to sandy loam. Generally, bulk density ranges from 1.41 -1.62 g cm -3 at Umulolo and Bende with a mean of 1.50 g cm -3 and C.V of 12.00%.…”

Section: Resultssupporting

confidence: 83%

Sediment yield, detachment, and runoff from soil under selected parent materials in Southeastern Nigeria.

Agim

Igwe

2019

Nigerian Journal of Soil Science

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Soil degradation due to water erosion among other causes has been a major problem in southeastern Nigeria, therefore a study was conducted to determine sediment yield, detachment, and runoff from soil under selected parent material in southeastern Nigeria. The objective was to characterize the selected soils in terms of their physical and chemical parameters, carry out rainfall simulation, and to establish some relationships that exist among studied parameters with selected soil properties. Soil samples were collected in three replicates from twenty locations, 5 location each from 4 geologic formations namely Asu River Group, Bende Ameki Group, Coastal Plain Sand and False bedded Sandstone at a depth of 0 – 20 cm using soil auger. Standard laboratory procedures were followed for samples for routine analyses while the rest was subjected to rainfall simulation at an intensity of 190 mm/hr for a period of 30 minutes under dry and wet conditions of the soils. Result showed that significant P<0.05) differences among studied parameters. Sediment yield under wet and dry states ranged from 0.56 - 3.95 kg m-2 hr-1 and from 0.80 - 4.97 kg m-2hr-1. The highest sediment yield under both conditions was recorded at Ishiagu, Bende, Obinze and Okigwe from ARG, BAG, CPS and FBS derived parent materials, respectively. Detachment under both conditions ranged from 0.04 - 0.13 kg m-2hr-1 and from 0.03 - 0.21 kg m-2 hr- . Similarly, runoff ranged from 79.80 - 125.30 mm and 28.00 – 106.90 mm under wet and dry states. Result also indicated a negative relationship between clay fraction and sediment yield (r= - 0.62) under dry and ( r= - 0.27) under wet condition. Conclusively, the study noted that rainfall has great impact on studied soils as higher values of sediment yield and detachment were noted mostly under dry than in wet conditions.

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“…Therefore, silt and clay contents were higher in the middle and bottom fields than top field. The increasing trend in clay content from top to bottom along the toposequence was also observed by Eshett et al (1989) in Nigeria and Posner and Crawford (1992) in Senegal and Boling et al (2008) in Thailand and Indonesia.…”

Section: Influence Of Toposequence Position On Soil Propertiesmentioning

confidence: 55%

“…These differences in toposequence position may lead to differentiation in soil properties and hydrological conditions (Hseu and Chen, 2001;Tsubo et al, 2006) and therefore crop yield. Topography directly affects soil-forming processes through erosion and deposition, and variation has been observed in soil texture (Yamauchi, 1992), nitrogen (N), phosphorus (P) and potassium (K) content (Moormann et al, 1977;Eshett et al, 1989;Posner and Crawford, 1992;Yamauchi, 1992) among the toposequence positions. Furthermore, organic compounds present in the water also will influence soil fertility in paddy rice fields.…”

Section: Introductionmentioning

confidence: 99%

Toposequential variation in soil properties and crop yield from double-cropping paddy rice in Northwest Vietnam

Oo¹

2013

J. Cereals Oilseeds

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To access the spatial differences in soil properties and crop yield at cascade level affected by either sediment induced or farmers' fertility practice, field experiments were conducted in Cheing Khoi watershed area during spring and summer seasons with two different cascades. The cascades had fertilized and unfertilized parts and all the measurements were conducted at the top, middle and bottom field of each part. In both rice cascades, middle and bottom fields showed high silt and clay content while sand was the dominant type in the top field. Total nitrogen (TN) and carbon (TC) contents were significantly higher in lower lying fields than top field. Seasonal average surface water NH 4 concentrations for top, middle and bottom fields were 2.7, 3.4 and 3.2 mg L -1 in spring and 2.8, 3.5 and 3.1 mg L -1 in summer, respectively. Differences were substantial in yield components parameters and grain yield depending on toposequence position. Grain yields in the middle fields of both rice cascades were higher than other field positions in both fertilized and unfertilized fields. The grain yields were significantly related with surface water NH 4 concentration, TN content, sand and silt content of soil. The larger toposequential differences in crop yield require different field specific management practices for each position in order to improve rice production in this watershed area.

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Soil properties and mineralogy in relation to land use on a sedimentary toposequence in south-eastern Nigeria

Cited by 19 publications

References 7 publications

Differences in carbon forms under two land use types in Abia State, South-east Nigeria

Differences in carbon forms under two land use types in Abia State, South-east Nigeria

Sediment yield, detachment, and runoff from soil under selected parent materials in Southeastern Nigeria.

Toposequential variation in soil properties and crop yield from double-cropping paddy rice in Northwest Vietnam

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