Assessment of soil enzyme activities based on soil samples from the Beas River bed India using multivariate techniques

Kumar V., . and Sharma A., . and Thukral A. K., . and Bhardwaj R., . Assessment of soil enzyme activities based on soil samples from the Beas River bed India using multivariate techniques. pp. 135-145. ISSN 1394-7990

This study was aimed at assessing soil enzyme activities in the Beas River bed for the pre-monsoon post-monsoon and winter seasons. Soil samples were collected in triplicates from four sites for each season and analysed for 21 soil characteristics. The soil enzymes assessed were urease catalase polyphenol oxidase (PPO) and invertase. The hypothesis tested was that the enzyme activities are determined by soil characteristics and other environmental variables. Data were analysed using analysis of variance multiple comparison test cluster analysis principal component analysis stepwise multiple linear regression analysis and artificial neural networks. It was concluded from the study that maximum soil urease PPO and invertase activities occurred during the winter season. There were two factors underlying the enzyme activities: factor-1 for urease and catalase and factor-2 for PPO and invertase. Urease activity was increased to a maximum by the phosphate content of the soil an important component of animal excreta. Nickel and Cu are the prosthetic groups of urease and PPO which contributed a maximum to the activities of the respective enzymes.

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Abstract

This study was aimed at assessing soil enzyme activities in the Beas River bed for the pre-monsoon post-monsoon and winter seasons. Soil samples were collected in triplicates from four sites for each season and analysed for 21 soil characteristics. The soil enzymes assessed were urease catalase polyphenol oxidase (PPO) and invertase. The hypothesis tested was that the enzyme activities are determined by soil characteristics and other environmental variables. Data were analysed using analysis of variance multiple comparison test cluster analysis principal component analysis stepwise multiple linear regression analysis and artificial neural networks. It was concluded from the study that maximum soil urease PPO and invertase activities occurred during the winter season. There were two factors underlying the enzyme activities: factor-1 for urease and catalase and factor-2 for PPO and invertase. Urease activity was increased to a maximum by the phosphate content of the soil an important component of animal excreta. Nickel and Cu are the prosthetic groups of urease and PPO which contributed a maximum to the activities of the respective enzymes.

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Item Type:	Article
AGROVOC Term:	Soil
AGROVOC Term:	Enzyme activity
AGROVOC Term:	Soil sampling
AGROVOC Term:	Rivers
AGROVOC Term:	Soil analysis
AGROVOC Term:	Catalase
AGROVOC Term:	Distilled water
AGROVOC Term:	Analytical methods
AGROVOC Term:	Analysis of variance
AGROVOC Term:	Factor analysis
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:53
URI:	http://webagris.upm.edu.my/id/eprint/7765

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