Record Details

EFFECT OF SPATIAL VARIABILITY IN A TOPOSEOUENCE ON SOIL PROPERTIES

KrishiKosh

View Archive Info
 
 
Field Value
 
Title EFFECT OF SPATIAL VARIABILITY IN A TOPOSEOUENCE ON SOIL PROPERTIES
 
Creator VARALAKSHMI, L.R
 
Contributor RAMAVATHARAM, N
 
Subject EFFECT, SPATIAL, VARIABILITY, TOPOSEOUENCE, SOIL, PROPERTIES
 
Description Spatial variability in a toposequence on soil physical
and chemical properties viz., Mechanical composition, bulk
density, Hydraulic conductivity, colour, pH, electrical
conductivity, organic carbon, available nitrogen, available
phosphorus, available potassium, cation exchange c·aprcity
and av•a ilable micronutrients was studied on two slopes with
slope percentages of 2.329 and 1.926 near Bhakarapet vill~e
in Chittoor district of Andhra Pradesh. Soil samples were
collected from seven profiles of slope-I and six profiles of
slope-II. In each profile soil samples from six depths "Were
collected.
In both the slopes the coarse sand fraction decreased
with depth within the profile and also down the slope. No
definite trend was noticed with fine sand and silt but the
clay content increased with depth and also down the slope.
Soil colour of both the slopes became darker at the base of
the slope. The hydraulic conductivity decreased with depth
within a profile and also down the slope. In the first slope
there was a decrease in the bul~ density with depth of the
profile and down the slope but in the second slope the trend
was reverse. The soil pH in both the slopes increased with
depth of profile and also down the slope. No variation in
electrical conductivity with depth within a profile and a
slight increase down the slope was observed. The CEC increased
with depth of the profile and also down the slope in both the
slopes. But this increase was steep in case of slope-I. The
ccganic carbon content decreased down the slope in both the
slopes. Slope-Iihas more available nitrogen compared to slope-L: •
Available phosphorus showed no definite trend with depth of the
profile but showed an increasing trend along the slope. In
slope-r, the available potassium followed a decreasing trend with
depth of the profile and down the slope, but showed no regular
pattern of either increase or decrease in slope-rr.
The available zn content decreased with depth of the profile
and increased down the slope in both the slopes. ~vailable Fe
showed no definite sequence in distribution with depth and along
the slope. Available copper followed the same trend of available
Fe. The available Mn was maximum in intermediate layers of all
the profiles of both the slopes. Down the slope available Mn
followed the same trend of available Fe and Cu.
 
Date 2016-08-18T14:02:15Z
2016-08-18T14:02:15Z
1989
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72906
 
Language en
 
Relation D3408;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD.