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Studies on Soil Variability in Relation to Landforms for Optimizing Land Use Plan in Bundi District of Rajasthan

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Title Studies on Soil Variability in Relation to Landforms for Optimizing Land Use Plan in Bundi District of Rajasthan
 
Creator Meena, G. L.
 
Contributor Singh, R. S.
 
Subject null
 
Description Studies on Soil Variability in Relation to Landforms for Optimizing
Land Use Plan in Bundi District of Rajasthan
The present investigation highlights the impact of topography on the morphological, physical
and chemical properties of the soils of study area. The impact of topography on the soil formation has
been quantified and optimum and alternate land use plan has been suggested.
The soils of two physiographic regions i.e. eastern Rajasthan upland and Vindhyan landscape
consisting of six landforms viz. hill, pediment, valley, very gently sloping plain, nearly level plain-I
and nearly level plain-II were selected, in order to work out relationship between soil and landforms
and its effect on effective use of available resources. Total twelve pedons were examined in the field
and investigated in the laboratory using standard laboratory procedures. The soils on hill top and
pediment were very shallow to shallow, sandy clay loam to single grain in texture with medium coarse
weak sub angular blocky structure and exhibited dark reddish brown to yellowish brown colour. The
soils of valley were deep, sandy clay loam in texture with medium coarse weak sub angular blocky to
medium fine moderate sub angular blocky structure and exhibited reddish brown to dark yellowish
brown colour. The soils of remaining landforms were found deep to very deep, sandy clay loam to clay
in texture with medium moderate to strong angular structure (angular and sub angular) and exhibited
dark brown to very dark grayish brown colour. The water retention and available water capacity were recorded higher in the nearly level plain
soils as compared to soils of other landforms as well as in Vindhyan landscape than eastern Rajasthan
upland. The pH and EC were relatively lower in the soils of eastern Rajasthan upland than Vindhyan
landscape. Distribution of organic carbon was low in soils of all pedons but comparatively higher in
soils of Vindhyan landscape. Base saturation was higher in the soils of lower topographic position.
Cation exchange capacity was found positively correlated with clay and increases as clay increased
down the slope as well as with depth. Concentration of exchangeable bases was in order of
Ca2+>Mg2+>K+>Na+ in all the pedons soils. Silica content increased down the slope from hill top to
nearly level plain in both transects. The content of Alumina oxide, iron oxide and sesquioxide were
following the similar trend.
The uniform fine sand plus very fine sand to silt plus total sand ratio suggested the uniformity
within soil profile while variation between the soils of different landforms indicated that the soils of
different landforms have been developed from the uniform parent materials with different weathering
intensity as well as stages of soil development. The higher silica to sesquioxide, Reiche's product
index, bases to alumina and bases to sesquioxide ratio indicates lower state weather ability of soils of
hill top and pediment.
The soils of all pedons were found deficient in available nitrogen and phosphorus while
adequate in available potassium. The DTPA extractable micronutrients like iron, manganese and
copper were found sufficient and zinc was deficient in soils of both transect. Major and micronutrients
were found relatively higher in soils of Vindhyan landscape compared to soils of eastern Rajasthan
upland.
The soils of all pedons were classified in Entisols, Inceptisols and Vertisols orders. The soils
of hill top and pediment were not found suitable for arable crops as well as for horticulture crops due to
shallow depth, excessive erosion, low AWC and low organic carbon content. The soils of rest of
pedons were found marginally to moderately suitable for cereals (rice, maize, sorghum, wheat and
barley), pulses (cowpea and gram), oil seed crops (soybean, sesamum and mustard) and horticulture
crops (mango, guava, citrus and anola).
 
Date 2017-11-10T09:29:10Z
2017-11-10T09:29:10Z
2011
 
Type Thesis
 
Identifier Meena and Singh, 2011
http://krishikosh.egranth.ac.in/handle/1/5810035366
 
Language en
 
Format application/pdf
 
Publisher MPUAT, Udaipur