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Influence of soil management practices and substrate availability on microbial biomass and its activities in some haplic luvisols

Journal Article:

Abstract

Soil microbial biomass and activities are sensitive indicators of management effects. Higher contents of microbial biomass and higher activities, for example, are found with crop rotations in contrast to bare fallow and mono culture systems. The main reason for these differences is a higher input of crop and root residues in crop rotation systems, leading to more microbial available substrate. The objectives of this study were to describe indices for microbial available substrate in arable soils depending on management practices, and to relate them with soil microbial biomass and activities. At two locations (Muttergarten and hinger Hof near the University of Hohenheim, Stuttgart, SW-Germany), adenosine triphosphate (ATP) contents and microbial activities were measured in haplic Luviosls. As indices for microbial available substrate, water soluble organic carbon compounds in soils were determined and decomposable young soil organic matter was calculated from organic fertilizers and crop and root residues using empirical decomposition functions. Higher ATP contents and microbial activities were observed along with organic fertilization (liquid cattle manure) than with mineral fertilization. Shallow cultivation with a rotary cultivator led to higher values of microbial properties in the upper part of the Ap horizon than ploughing. Soil microbial parameters were higher in plots  More>>
Authors:
Friedel, Jurgen K [1] 
  1. University Hohenheeim, Stuttgart (Germany)
Publication Date:
Jul 01, 1996
Product Type:
Journal Article
Resource Relation:
Journal Name: Revista Mexicana de Ciencias Geologicas; Journal Volume: 13; Journal Issue: 2; Other Information: PBD: 1996
Subject:
09 BIOMASS FUELS; SOILS; BIOMASS; SUBSTRATES; CROPS; ADENOSINE; MINERALS; NUMERICAL DATA
OSTI ID:
20327455
Country of Origin:
Mexico
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0185-0962; TRN: MX0300036
Availability:
Available in Sociedad Geologica Mexicana A. C. and Instituto de Geologia, UNAM, Cd. Universitaria, Apdo. Postal 70-296, 04510 Mexico, D.F.
Submitting Site:
MX
Size:
page(s) 221-227
Announcement Date:

Journal Article:

Citation Formats

Friedel, Jurgen K. Influence of soil management practices and substrate availability on microbial biomass and its activities in some haplic luvisols. Mexico: N. p., 1996. Web.
Friedel, Jurgen K. Influence of soil management practices and substrate availability on microbial biomass and its activities in some haplic luvisols. Mexico.
Friedel, Jurgen K. 1996. "Influence of soil management practices and substrate availability on microbial biomass and its activities in some haplic luvisols." Mexico.
@misc{etde_20327455,
title = {Influence of soil management practices and substrate availability on microbial biomass and its activities in some haplic luvisols}
author = {Friedel, Jurgen K}
abstractNote = {Soil microbial biomass and activities are sensitive indicators of management effects. Higher contents of microbial biomass and higher activities, for example, are found with crop rotations in contrast to bare fallow and mono culture systems. The main reason for these differences is a higher input of crop and root residues in crop rotation systems, leading to more microbial available substrate. The objectives of this study were to describe indices for microbial available substrate in arable soils depending on management practices, and to relate them with soil microbial biomass and activities. At two locations (Muttergarten and hinger Hof near the University of Hohenheim, Stuttgart, SW-Germany), adenosine triphosphate (ATP) contents and microbial activities were measured in haplic Luviosls. As indices for microbial available substrate, water soluble organic carbon compounds in soils were determined and decomposable young soil organic matter was calculated from organic fertilizers and crop and root residues using empirical decomposition functions. Higher ATP contents and microbial activities were observed along with organic fertilization (liquid cattle manure) than with mineral fertilization. Shallow cultivation with a rotary cultivator led to higher values of microbial properties in the upper part of the Ap horizon than ploughing. Soil microbial parameters were higher in plots under a rape-cereals crop rotation, compared to a legumes-cereals crop rotation. Microbial biomass and its activities were related more closely to decomposable young soil organic matter than to soil humus content or to any other soil property. Water soluble organic carbon compounds did not prove as an indicator of microbial available substrate. [Spanish] La biomasa y la actividad microbianas son indicadores sensibles de los efectos del manejo del suelo. Por ejemplo, con la rotacion de cultivos se obtiene un contenido y una actividad mayores de la biomasa microbiana en contraste con el simple barbecho y con los sistemas de monocultivo. La razon principal de estas diferencias es un abastecimiento mas grande con residuos de cosecha y raices en los sistemas de rotacion de cultivos, que conduce a un mayor sustrato disponible para microorganismos. Los objetivos del estudio presente fueron describir los indices del sustrato disponible para microorganismos en suelos ara bles, dependiendo de las practicas de manejo de suelos, y relacionarlos con la biomasa y la actividad microbianas. En dos localidades (Muttergarten e Ihinger Hof, cerca de la Universidad de Hohenheim, Stuttgart, sudoeste de Alemania) fueron medidos los contenidos de trifosfato de adenosina y la actividad microbiana en Luvisoles haplicos. Como indices del sustrato disponible para microorganismos fueron determinados los compuestos organicos de carbon soluble en agua y se calculo la ateria organica de suelos jovenes susceptible a descomponerse en los fertilizantes organicos y en los residuos de cosecha y de raices, usando funciones de descomposicion empiricas. Los contenidos mas altos de ATP y las actividades microbianas mas altas fueron observados con la fertilizacion organica (abono liquido de ganado), antes que con la fertilizacion mineral. La labranza somera con un cultivador rotatorio condujo a valores mas altos de la propiedades microbianas en la parte superior del horizonte Ap que con la labranza con arado. Los parametros microbianos del suelo fueron mas altos en parcelas bajo una rotacion de cultivos de colza-cereales, en comparacion con una rotacion de cultivos de legumbres-cereales. La biomasa microbiana y sus actividades estuvieron relacionadas mas estrechamente a materia organica de suelos jovenes susceptible a descomponerse que al contenido de humus o a cualquiera otra propiedad del suelo. Los compuestos organicos de carbon soluble en agua no demostraron ser un indicador del sustrato disponible para microorganismos.}
journal = {Revista Mexicana de Ciencias Geologicas}
issue = {2}
volume = {13}
journal type = {AC}
place = {Mexico}
year = {1996}
month = {Jul}
}