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CHARACTERISATION AND CLASSIFICATION OF RED SOILS OF LEFT CANAL AREA OF POLAVARAM PROJECT IN EAST GODAVARI AND VISAKHAPATNAM DISTRICTS

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Title CHARACTERISATION AND CLASSIFICATION OF RED SOILS OF LEFT CANAL AREA OF POLAVARAM PROJECT IN EAST GODAVARI AND VISAKHAPATNAM DISTRICTS
 
Creator PRASAD, L.K
 
Contributor PILLAI, R.N
 
Subject inorganic compounds, climate, area, soil management, fruits, clay, livestock, potassium, calcium, economic resources
 
Description Representative red soils from Polavaram project left
canal area in East Godavari and Visakhapatnam distriats were
investigated. Six pedons were selected from Pedatadipalli,
Prakasarao Palem, Palacherla, Diwancheruvu, Suryaraopet and
Murari and described for their profile morphology. Horizon
wise soil samples were collected from e&ch profile and
subjected to laboratory analysis to stQdy the physical,
physico-chemical, chemical and mineralogical
characteristics. The clay samples from surface horizons of
all the pedons were subjected X-ray diffraction. From the
field observations made and laboratory data generated, the
soils were characterised and categorised.
The profile morphology revealed that these soils had
hard and compact lateritic and quartzitic sandstone layer in
deeper horizons and colour varied from grayish brown to dark
reddish brown and structure varied from granular to
subangular blocky and subangular blocky to angular blocky in
surface and sub surface horizons respectively.
The results of the laboratory analysis revealed that
the soils were light textured with low water holding capacity,
slightly acidic to weakly alkaline in reaction, low
inorganic matter and high in percent base saturation. The
exchangeable cations on the exchange complex were in the
order of: Ca+2 > Mg+2 > K+ > Na+. All the exchangeable
cations had shown an increasing trend with depth except
potassium.
The results of the X-ray diffraction analysis of the
clay samples revealed that these soils were dominant in
Kaolinite mineral in all the p.edons followed. by illite and
with minor amounts of montmorillonite and quartz.
Based on the morphology and physico-chemical properties,
X-ray diffraction ~nd climatic data of the study area,
these pedons were placed as under
1. Pedatadipalli: Fine loamy, mixed; hyperthermic Udic
Ustochrept.
2. Prakasarao Palem: Fine, mixed, hyperthermic Udic
Haplustalf.
3. Palacherla: Fine Loamy, mixed, hyperthermic Udic
Rhodustalf.
4. Diwancheruvu: Fine Loamy, mixed, hyperthermic Udic
Haplustalf.
5. Suryaraopet: Fine Loamy, mixed, hyperthermic Udic
Haplustalf.
6. Murari: Fine, mixed, hyperthermic Udic Haplustalf.
 
Date 2017-01-20T10:03:23Z
2017-01-20T10:03:23Z
1991
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/97241
 
Language en
 
Relation D3932;
 
Publisher ANDHRA PRADESH AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD