Soil penetrating quality in cultivated and forested coastal plain sands of Southern Nigeria

Udom, B. E.; Adesodun, J. K.

doi:10.1080/03650340.2015.1107677

Cited by 7 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Organic matter built up by the legume plant during the 2-season fallow may have contributed to such increases. The moisture content-dry density relationships found in this study further confirmed the widely held assertion that additions of water to soil increased force of cohesion within the soil particles, when water acting as lubricant [26]. The lubrication effect, however, continued to a limiting moisture range when water combined with the remaining air within the soil pores to fill the pore spaces.…”

Section: Discussionsupporting

confidence: 85%

Critical Moisture Content, Bulk Density Relationships and Compaction of Cultivated and Uncultivated Soils in the Humid Tropics

Udom¹,

Ehilegbu²

2018

ASRJ

View full text Add to dashboard Cite

Soil compaction affects soil fertility through increasing bulk density and soil strength. It also decreases infiltration rate, total porosity and amount of water stored in the root zone for crop use. In this study, we evaluated the optimum moisture contents (OMC) in relation to maximum dry density (MDD) and compaction of cultivated and uncultivated soils. The study was carried out on four land use types viz: uncultivated: Velvet tamarind (Dialium quineese), rubber plantation (Hevea brasiliensis) and cultivated: 5-year fallow and 10-year continuous cultivated soil to maize crop. Proctor test for the maximum dry density-moisture content relationship was carried out, including some hydraulic and structural properties of the soil, and their effect soil compaction. Results showed that optimum moisture content (OMC) for compaction relate to the maximum dry density (MDD). In which case, dry density increased with water content to a maximum and decrease as moisture content increased above the optimum. Soil organic matter (SOM) content and particle size distribution highly affected the MDD and OMC. The MDD and OMC were: 1.92 g cm-3 and 10.4%, 1.95 g cm-3 and 11.2%, 1.91 g cm-3 and 12.3%, and 1.87 g cm-3 and 12.8% for velvet tamarind, 5-year fallow, CC and rubber plantation soils respectively, at 0-15 cm depth. Changes in field bulk densities at similar depths were in the order of velvet tamarind < rubber < 5-year fallow < CC. There were highly significant (p < 0.01) relationships between MDD, total porosity, Ksat and SOM and negative relationships between these parameters and OMC. Thus, continuous cultivation increased MDD and reduced OMC for compaction. Two- season fallow periods with legume could improve soil hydraulic properties and maintain the MDD of sandy soils at minimum.

show abstract

Section: Discussionsupporting

confidence: 85%

Critical Moisture Content, Bulk Density Relationships and Compaction of Cultivated and Uncultivated Soils in the Humid Tropics

Udom¹,

Ehilegbu²

2018

ASRJ

View full text Add to dashboard Cite

show abstract

“…The contrast observed between total porosity and Ksat, and bulk density was not surprising, because pore-size distribution rather total porosity was adequate to relate these properties. This study agreed with Igwe and Wokocha (2006), and Udom and Adesodun (2016), that aeration capacity of soils was related the ratio of macro-to micro-porosity showed a positive trend with Ksat and bulk density.…”

Section: Micro Aggregate Stability Indicessupporting

confidence: 92%

“…This is because parameters such as ASC, CFI and saturated hydraulic conductivity (Ksat) are commonly used as estimates of soil structural stability. On the other hand, CDI and DR, are estimates of soil dispersion (Udom et al, 2016;. The higher values of CFI and ASC found in Calapogonium mucunoides and oil palm soil were indications of higher or better stability of the soils (Igwe et al, 2006) while a higher value of DR found in rubber, cassava and plantain soils were an indication of low structural stability.…”

Section: Micro Aggregate Stability Indicesmentioning

confidence: 98%

“…The concept of aggregate stability depends on both the forces that bind particles together in nature and the magnitude of the disruptive stress (Beare et al, 1994). Factors that influence aggregate stability are essential in evaluating the ease with which soils erode by water and/or wind, the potential of soils to crust and/or seal, soil permeability, quasi-steady state infiltration rates, and seedling emergence and in predicting the capacity of soils to sustain long-term crop production (Udom et al, 2016). Aggregate stability of soils can be measured by the wetsieving or raindrop techniques which rely on the principle of cyclically submerging and sieving the soil in water to emulate the natural stresses involved in the entry of water into soil aggregates (Kemper and Rosenau, 1986).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Micro-aggregate Indices and Structural stability of Soils under Different Management

B.E

Anozie

2018

Nigerian Journal of Soil Science

View full text Add to dashboard Cite

Low water stability of soil micro-aggregates accentuated by increased intensity of cultivation and soil degradation are among the significant issues that draw the atten- tion of Soil Scientists due to their effects on soil physical conditions. The study was carried out to quantify changes in micro-aggregate stability indices of soils on coastal plain sands under contrasting land use and management. Soil samples were collected from cassava plots, plantain, maize, rubber plantation, oil palm and 2-season fallow plots with Calapogonium mucunoides. Results revealed significant changes in micro-and macro-aggregate stability indices. Clay dispersion index (CDI) was 0.46 and 0.39 respectively in cassava and maize plots. Parameters such as aggregated silt and clay (ASC), clay flocculation index (CFI) and saturated hydraulic conductivity (Ksat) used as estimates of soil structural stability were significantly (p < 0.05) increased due to 2-season fallow and 10-year oil palm plantation. Two-year fallow increased ASC and CFI by 57 % and 86.5% respectively compared with continuous maize culti- vation. Ten-year cultivation to cassava and maize increased sand content by 18 and 9% respectively and decreased the mean weight diameter (MWD) of water stable aggregates and Ksat. Relationships showed significant (p < 0.05) positive correlation between ASC and CFI and Ksat. Two-year fallow with Calapogonium mucunoides and 10-year oil palm plantation improved the soil micro- and macroaggregate indices. They could be used to conserve the soil and reduce the degradation of soil resources.

show abstract

“…The soils in general showed a high crusting or sealing risk in all cultivation systems (Van der Watt and Classens, 1990). This is due to the low organic matter content (Udom and Adesodun, 2016;Udom and Kamalu, 2016). Soil sealing index (SI) was affected by cultivation systems (p <0.05).…”

Section: Soil Sealing Indexmentioning

confidence: 99%

Soil Shrinkage, Sealing Index and Hydro-Physical Properties of Vertisols as Influenced by Long-Term Cultivation Systems in Northern Egypt

Bassouny

2018

Journal of Soil Sciences and Agricultural Engineering

View full text Add to dashboard Cite

Soil shrinkage and sealing index are important for understanding water and solute transport in soils. Effects of long-term cultivation systems on the soil shrinkage, sealing and hydro-physical properties of Vertisols in Kafr El-Sheikh Governorate, Northern Egypt were studied. The cultivation systems were fruit trees (FT), field crops (FC), vegetables crops (VC), and noncultivated soil (NC). Forty eight samples were collected from sixteen soil profiles (three layers: 0-30, 30-60 and 60-100 cm) from different locations. The studied parameters included coefficient of linear extensibility (COLE), shrinkage ratio (SR), potential linear extensibility (PLE), soil sealing index (SI), bulk density (BD), penetration resistance (PR), saturated hydraulic conductivity (Ks) and soil water content (SWC). Long-term cultivation improved soil shrinkage, sealing and hydro-physical properties. Soil organic matter (SOM) and silt + clay contents increased in VC and FC compared with FT and NC systems in all layers (p < 0.05). The BD and PR decreased in all systems, and in VC and FC systems it was prominent compared with NC system. Ks and SWC increased (p <0.05) under VC and FC than in NC system. Low COLE, SR and PLE occurred in all systems particularly in VC and FC system. The VC and FC reduced shrinkage hazards, while high COLE, SR and PLE occurred in NC, indicating shrinkage hazards. The SI was significantly (p <0.05) affected by cultivation systems and sealing was low in soils of VC, FC and FT than NC. Each of COLE, SR and PLE showed a negative correlation (p < 0.01) with SOM, but a positive one with BD and PR (p < 0.01). Each of COLE and SR (p < 0.05) and PLE (p < 0.01) showed negative correlations with SWC and Ks. SI showed a negative correlation with each of COLE, SR, BD and PR (p < 0.01) and PLE (p < 0.05), and a positive one with SWC and Ks (p < 0.05). VC and FC improved the soil shrinkage, sealing index and hydro-physical properties of Vertisols.

show abstract

Soil penetrating quality in cultivated and forested coastal plain sands of Southern Nigeria

Cited by 7 publications

References 18 publications

Critical Moisture Content, Bulk Density Relationships and Compaction of Cultivated and Uncultivated Soils in the Humid Tropics

Critical Moisture Content, Bulk Density Relationships and Compaction of Cultivated and Uncultivated Soils in the Humid Tropics

Micro-aggregate Indices and Structural stability of Soils under Different Management

Soil Shrinkage, Sealing Index and Hydro-Physical Properties of Vertisols as Influenced by Long-Term Cultivation Systems in Northern Egypt

Contact Info

Product

Resources

About