Biological indicators of soil quality in organic farming systems

EA Stockdale, CA Watson

Research output: Contribution to journalReview article

14 Citations (Scopus)

Abstract

The health of the soil, recognized by its active role in the linked processes of decomposition and nutrient supply, is considered as the foundation of agriculture by the organic farming movement. Nutrient management in organically managed soils is fundamentally different from that of conventional agricultural systems. Crop rotations are designed with regard to maintenance of fertility with a focus on nutrient recycling. Where nutrients are added to the system, inputs are in organic and/or non-synthetic fertilizer sources that are mostly slow release in nature. Hence a greater reliance is placed on soil chemical and biological processes to release nutrients in plant-available forms. In this respect, nutrient availability in organically farmed soils is more dependent upon soil processes than is the case in conventional agriculture. The development and use of biological indicators of soil quality may therefore be more important in organic (and other low input) farming systems. The aim of this paper is to evaluate current evidence for the impact of organic farming systems on soil biological quality and consider the identification of appropriate biological indicators for use by organic farmers and their advisors. Organic farming systems are generally associated with increased biological activity and increased belowground biodiversity. The main impacts on biological fertility do not result from the systems per se but are related to the amount and quality of the soil organic matter pool and disruptions of soil habitat via tillage. Even within the constraints of organic farming practices it is possible for farmers to make changes to management practices which will tend to improve soil biological quality. It is, however, by no means clear that distinct indicators of soil biological quality are needed for organic farming systems. It is important not only to identify the most appropriate indicators but also
Original languageEnglish
Pages (from-to)308 - 318
Number of pages11
JournalRenewable Agriculture and Food Systems
Volume24
Issue number4
DOIs
Publication statusFirst published - 2009

Fingerprint

organic production
soil quality
farming systems
nutrients
soil fertility
farmers
agriculture
soil
nutrient management
nutrient availability
recycling
bioactive properties
tillage
soil organic matter
fertilizers
degradation

Bibliographical note

60900018
63800039

Keywords

  • Microbial biomass
  • Organic matter inputs
  • Soil ecosystem
  • Tillage

Cite this

@article{c76b59811f5b4fb3b5f8ae8c37e7e12b,
title = "Biological indicators of soil quality in organic farming systems",
abstract = "The health of the soil, recognized by its active role in the linked processes of decomposition and nutrient supply, is considered as the foundation of agriculture by the organic farming movement. Nutrient management in organically managed soils is fundamentally different from that of conventional agricultural systems. Crop rotations are designed with regard to maintenance of fertility with a focus on nutrient recycling. Where nutrients are added to the system, inputs are in organic and/or non-synthetic fertilizer sources that are mostly slow release in nature. Hence a greater reliance is placed on soil chemical and biological processes to release nutrients in plant-available forms. In this respect, nutrient availability in organically farmed soils is more dependent upon soil processes than is the case in conventional agriculture. The development and use of biological indicators of soil quality may therefore be more important in organic (and other low input) farming systems. The aim of this paper is to evaluate current evidence for the impact of organic farming systems on soil biological quality and consider the identification of appropriate biological indicators for use by organic farmers and their advisors. Organic farming systems are generally associated with increased biological activity and increased belowground biodiversity. The main impacts on biological fertility do not result from the systems per se but are related to the amount and quality of the soil organic matter pool and disruptions of soil habitat via tillage. Even within the constraints of organic farming practices it is possible for farmers to make changes to management practices which will tend to improve soil biological quality. It is, however, by no means clear that distinct indicators of soil biological quality are needed for organic farming systems. It is important not only to identify the most appropriate indicators but also",
keywords = "Microbial biomass, Organic matter inputs, Soil ecosystem, Tillage",
author = "EA Stockdale and CA Watson",
note = "60900018 63800039",
year = "2009",
doi = "http://dx.doi.org/10.1017/S1742170509990172",
language = "English",
volume = "24",
pages = "308 -- 318",
journal = "Renewable Agriculture and Food Systems",
issn = "1742-1705",
publisher = "Cambridge University Press",
number = "4",

}

Biological indicators of soil quality in organic farming systems. / Stockdale, EA; Watson, CA.

In: Renewable Agriculture and Food Systems, Vol. 24, No. 4, 2009, p. 308 - 318.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Biological indicators of soil quality in organic farming systems

AU - Stockdale, EA

AU - Watson, CA

N1 - 60900018 63800039

PY - 2009

Y1 - 2009

N2 - The health of the soil, recognized by its active role in the linked processes of decomposition and nutrient supply, is considered as the foundation of agriculture by the organic farming movement. Nutrient management in organically managed soils is fundamentally different from that of conventional agricultural systems. Crop rotations are designed with regard to maintenance of fertility with a focus on nutrient recycling. Where nutrients are added to the system, inputs are in organic and/or non-synthetic fertilizer sources that are mostly slow release in nature. Hence a greater reliance is placed on soil chemical and biological processes to release nutrients in plant-available forms. In this respect, nutrient availability in organically farmed soils is more dependent upon soil processes than is the case in conventional agriculture. The development and use of biological indicators of soil quality may therefore be more important in organic (and other low input) farming systems. The aim of this paper is to evaluate current evidence for the impact of organic farming systems on soil biological quality and consider the identification of appropriate biological indicators for use by organic farmers and their advisors. Organic farming systems are generally associated with increased biological activity and increased belowground biodiversity. The main impacts on biological fertility do not result from the systems per se but are related to the amount and quality of the soil organic matter pool and disruptions of soil habitat via tillage. Even within the constraints of organic farming practices it is possible for farmers to make changes to management practices which will tend to improve soil biological quality. It is, however, by no means clear that distinct indicators of soil biological quality are needed for organic farming systems. It is important not only to identify the most appropriate indicators but also

AB - The health of the soil, recognized by its active role in the linked processes of decomposition and nutrient supply, is considered as the foundation of agriculture by the organic farming movement. Nutrient management in organically managed soils is fundamentally different from that of conventional agricultural systems. Crop rotations are designed with regard to maintenance of fertility with a focus on nutrient recycling. Where nutrients are added to the system, inputs are in organic and/or non-synthetic fertilizer sources that are mostly slow release in nature. Hence a greater reliance is placed on soil chemical and biological processes to release nutrients in plant-available forms. In this respect, nutrient availability in organically farmed soils is more dependent upon soil processes than is the case in conventional agriculture. The development and use of biological indicators of soil quality may therefore be more important in organic (and other low input) farming systems. The aim of this paper is to evaluate current evidence for the impact of organic farming systems on soil biological quality and consider the identification of appropriate biological indicators for use by organic farmers and their advisors. Organic farming systems are generally associated with increased biological activity and increased belowground biodiversity. The main impacts on biological fertility do not result from the systems per se but are related to the amount and quality of the soil organic matter pool and disruptions of soil habitat via tillage. Even within the constraints of organic farming practices it is possible for farmers to make changes to management practices which will tend to improve soil biological quality. It is, however, by no means clear that distinct indicators of soil biological quality are needed for organic farming systems. It is important not only to identify the most appropriate indicators but also

KW - Microbial biomass

KW - Organic matter inputs

KW - Soil ecosystem

KW - Tillage

U2 - http://dx.doi.org/10.1017/S1742170509990172

DO - http://dx.doi.org/10.1017/S1742170509990172

M3 - Review article

VL - 24

SP - 308

EP - 318

JO - Renewable Agriculture and Food Systems

JF - Renewable Agriculture and Food Systems

SN - 1742-1705

IS - 4

ER -