Vertical Distribution of Physical and Chemical Properties of Soils of Ramapura-1 Microwatershed of YadgirTaluk and District of Karnataka, India
Rajendra Hegde
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre Hebbal, Bangalore-560 024, Karnataka, India.
M. B. Mahendra Kumar *
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre Hebbal, Bangalore-560 024, Karnataka, India.
K. V. Niranjana
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre Hebbal, Bangalore-560 024, Karnataka, India.
K. V. Seema
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre Hebbal, Bangalore-560 024, Karnataka, India.
B. A. Dhanorkar
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre Hebbal, Bangalore-560 024, Karnataka, India.
*Author to whom correspondence should be addressed.
Abstract
By using digitized cadastral map and satellite imagery an investigation was carried out to study the vertical distribution of physical and chemical properties of soils of Ramapura-1 microwatershed of Yadgirtaluk and district of Karnataka, India. The soil texture varied from loamy sand to sandy clay loam in surface and sandy clay loam to clay in subsurface. The per cent moisture distribution was varied from 3.89 to 54.94 per cent and it was increase with depth. The soils under the study were slightly acidic to alkaline (5.57 to 10.32) and non-saline in reaction. The organic carbon content was low to high (0.12 to 1.16 %) and decreased with depth. The per cent calcium carbonates in soils ranged from 0.60 to 8.19 per cent and uneven distribution in most of the soil series. The distribution of exchangeable bases in the order of Ca2+>Na+>Mg2+>K+. Most of the soil series were irregular in distribution of CEC (1.70 to 51.20 cmol (p+) kg-1) and CEC/clay ratio. The per cent base saturation was increase with depth in most of the series.
Keywords: Distribution, microwatershed, depth, series, irregular