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SPATIAL CHARACTERIZATION OF CONTAMINATED SOILS AND WATER AND THEIR IMPACT ON THE QUALITY AND SAFETY OF AGRICULTURAL PRODUCE: A REGIONAL CASE STUDY AT VILLAGE LEVEL.

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Title SPATIAL CHARACTERIZATION OF CONTAMINATED SOILS AND WATER AND THEIR IMPACT ON THE QUALITY AND SAFETY OF AGRICULTURAL PRODUCE: A REGIONAL CASE STUDY AT VILLAGE LEVEL.
Ph.D.
 
Creator VANITA MEENA
 
Contributor Ravinder Kaur
 
Subject Salinity, sodicity, chemical degradation, micro-nutrients, trace metals
 
Description T-8771
Owing to the lack of detailed spatial information on the existing resource profile and the
actual location, type, extent and source of contaminants across different spatial scales, the
present study was primarily aimed at applying modern geo-spatial techniques for prioritizing
soil–water resource degradation problems across Ujjina village of Mewat district (Haryana).
The study involved generation of detailed spatial information on the soils and surface/ground
waters of the Ujjina village through actual resource surveys, standard laboratory methods and
GIS/remote sensing techniques. A geo-spatial analysis of the study area revealed that the soils
of the study area were predominantly of saline character (EC > 4 dS/m and ESP < 15%), with
no micro-nutrient deficiency or heavy metal contamination besides cadmium. It was observed
that these salt affected soils were associated with marginally saline to saline (> 2.5 dS/m)
ground waters. Thus, the chemical degradation of the study area in general seemed to be of
geogenic nature. The southernmost part of the Ujjina village, subject to saline ground and/
drain water irrigations, seemed to be the worst affected area in terms of its excessive root
zone EC (>4 dS/m) and ESP (> 15%) levels. In general, heavy metal concentrations (viz. Cu,
Fe, Mn, Zn, Cr, Ni, Pb and Cd) in the (filtered) canal drain and groundwater water samples
were observed to be well within their permissible limits. However, average iron
concentrations in the ground waters of the southernmost part of the study area were observed
to be about 10 times larger than those in the surface (canal/ drain) waters. This was primarily
attributed to the intermittent anoxic root zone conditions (under dominant Paddy-Wheat crop
rotation in the study area), favouring high soil-Fe mobilization and thus its leaching to the
native shallow ground water aquifer.
 
Date 2016-08-22T15:00:09Z
2016-08-22T15:00:09Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73325
 
Format application/pdf
 
Publisher IARI, DIVISION OF ENVIRONMENTAL SCIENCES