Vegetation analysis for the rehabilitation of red clay soils at Panchkhal, Kabhrepalanchok District

AbstractThe tropical red clay soils, formed by the Quaternary weathering of volcanic deposits (and other rock types) in tropical and subtropical environments, have a very open structure and consequent high voids ratio. These soils are particularly sensitive to disturbance during sampling and subsequent transportation and extrusion of the samples. This technical note describes a simple method for obtaining high quality, undisturbed samples from pits in a way that does not require extrusion or trimming of the sample in the laboratory prior to triaxial testing, and only minimal preparation prior to oedometer testing.

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Erosion control at construction sites on red clay soils

Environmental Management ◽

10.1007/bf01875066 ◽

1982 ◽

Vol 6 (4) ◽

pp. 343-352 ◽

Cited By ~ 4

Author(s):

A. Dennis Lemly

Keyword(s):

Erosion Control ◽

Clay Soils ◽

Construction Sites ◽

Red Clay

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A soil catena on weathered basalt in Queensland

Soil Research ◽

10.1071/sr9740001 ◽

1974 ◽

Vol 12 (1) ◽

pp. 1 ◽

Cited By ~ 7

Author(s):

RH Gunn

Keyword(s):

Soil Properties ◽

Clay Minerals ◽

Plant Communities ◽

Parent Rock ◽

Clay Soils ◽

Red Clay ◽

Parent Materials ◽

Surface Cover ◽

Soil Catena ◽

Fresh Rock

Deep weathering in the upper layers of basalt flows in central Queensland led to the deveIopment of lateritic profiles with a surface cover of leached red clay soils overlying ferruginous and mottled zones. Subsequent erosion and bevelling of the weathered mantle left small residuals of the old surface and exposed the underlying weathered zones. In places the mantle was completely removed to uncover fresh rock. A soil catena comprising six zones with associated discrete plant communities developed in these landscapes. Soil differences are related to variations in the intensity of weathering of parent materials and the leaching, translocation, and precipitation of differentially soluble and mobile constituents of the parent rock. The sequence of clay minerals is kaolinite -->kaolinite + randomly interstratified material + montmorillonite --> montmorillonite. The distribution of the plant communities is closeIy associated with variations in soil properties, particularly those which affect water relationships.

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Influence of the insecticides acetamiprid and carbofuran on arylamidase and myrosinase activities in the tropical black and red clay soils

Environmental Monitoring and Assessment ◽

10.1007/s10661-015-4631-2 ◽

2015 ◽

Vol 187 (6) ◽

Cited By ~ 5

Author(s):

G. Jaffer Mohiddin ◽

M. Srinivasulu ◽

N. R. Maddela ◽

B. Manjunatha ◽

V. Rangaswamy ◽

...

Keyword(s):

Clay Soils ◽

Red Clay

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Energetic relationships for crushing of soil clods

Progress in Agricultural Engineering Sciences ◽

10.1556/progress.2.2006.1.3 ◽

2006 ◽

Vol 2 (1) ◽

pp. 51-72

Author(s):

István Patay ◽

Virág Sándor

Keyword(s):

Moisture Content ◽

Specific Energy ◽

Soil Moisture Content ◽

Energy Requirement ◽

Clay Content ◽

Clay Soils ◽

Rigid Support ◽

Soil Plasticity ◽

Specific Energy Requirement ◽

The Relationship

Clod crushing is a principal problem with soils of high clay content. Therefore, there is a need for determining the conditions for clod breaking and clod crushing. The objective of the work was to develop a special purpose tool for single clod breaking both by rigid support of the clod and by a single clod supported by soil and to develop a machine for clod crushing. Furthermore, the purpose was to determine the relationship between the specific energy requirement for clod crushing in the function of soil plasticity and the soil moisture content by the means of the developed tool and machine. The main result of the experiments is summarized in a 3D diagram where the specific energy requirement for soil clod crushing is given in the function of the moisture content and the plasticity index for different clay soils.

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