STATISTICAL STUDY OF SOIL PRODUCTIVITY IN SELECTED SUB WATERSHEDS
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Date
2018-08-23
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University of Agricultural Sciences, Bengaluru
Abstract
The study was conducted to analyse the soil productivity in Siddappanapalya sub
watershed having eight micro watersheds. From each micro-watershed forty grid soil
samples were collected and for each soil sample different physico-chemical characters,
major nutrients, secondary nutrients, micro nutrients were analysed and used for statistical
analysis. In order to assess the statistical significance between different soil properties
having a different characteristic in micro watersheds, multivariate analysis of variance
was performed and results indicated the significant difference between soil properties
among the micro watersheds. To assess the variation of particular soil character between
the micro watersheds, univariate analysis of variance which is considered as a post hoc
analysis of multivariate analysis were carried out. The results of the univariate analysis
clearly indicated the significant differences in the average values of each soil character
between the micro-watersheds. Based on the statistical mean differences, homogeneous
micro watersheds were formed for each of the soil character. The fertility status of the
soil is also analysed by using nutrient index approach. For calculating nutrient index
values the soil test values for different nutrients, samples were classified into low, medium
and high based on available standards. Further, forty soil samples in each microwatershed
were grouped into low, medium and high with respect to nutrient index. In
general based on all soil properties the low nutrient index in Siddappanapalya sub
watershed was observed.
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