Enzyme activities in a clay-loam soil amended with various crop residues |
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Authors: | P Perucci L Scarponi M Businelli |
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Institution: | (1) Istituto Chimica Agraria, Università degli studi, Perugia, Italy |
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Abstract: | Summary Amylase, dehydrogenase, arylsulphatase and phosphatases activities were measured in a clay-loam soil amended with seven different
crop residues. All enzyme activities, except phosphomonoesterase, were generally higher in the derived soil samples than in
the original soil. Addition of tobacco and sunflower residues caused an increase on most of the enzyme activities while tomato
residues increased only the amylase and phosphodiesterase activities.
As the enzyme activities were positively correlated to each other, a common source of the enzymes is suggested even though
the coefficients of correlation demonstrate that only a low percentage of the variability can be ascribed to the interactions
among enzyme activities. |
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Keywords: | Enzyme activity Crop residues Soil amendment |
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