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Laboratory Methods for Soil Health Analysis, Volume 2
Читать книгу Laboratory Methods for Soil Health Analysis, Volume 2 - Группа авторов - Страница 1
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Вернуться на страницу книги Laboratory Methods for Soil Health Analysis, Volume 2
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Страница 1
Table of Contents
List of Tables
List of Illustrations
Guide
Pages
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1 Laboratory Methods for Soil Health Assessment: An Overview
How Can a Farmer Assess Soil Health in the Field?
What Do Researchers Need, and Can They Reach Consensus?
What Do Commercial Analytical Laboratories Need?
Summary and Conclusions
References
2 Sampling Considerations and Field Evaluations for Soil Health Assessment
Introduction
Soil Variability
Sampling Considerations Sources of Error
Site Characterization
Sampling Designs
Judgement Sampling
Simple Random Sampling
Stratified Random Sampling
Systematic Sampling
Composite Sampling
Sampling Depth
Timing and Frequency of Sampling
Sample Collection, Processing, and Archival
Field Evaluations
General Field Observations
Visual Soil Evaluations
Soil Health Test Kits
Sensor‐based Measurements
Summary
Acknowledgments
References
3 Soil Organic Carbon Assessment Methods
Summary
Introduction
Origin and Factors Affecting SOC
Functions of SOC
Biological Effects
Chemical Effects
Physical Effects
Crop Productivity
Measurement of SOC
Methods for SOC Analysis Soil Sampling and Preparation
Dry Combustion
Apparatus
Reagents
Procedures
Pre‐treatment for soils with inorganic carbon content
Loss‐On‐Ignition (LOI) (Salehi et al., 2011; Schulte and Hopkins, 1996)
Apparatus
Procedures
Calculation
Soil Inorganic C
Dry combustion Procedure
Other Analytical Methods and Issues Affecting Soil Carbon
Gravimetric method for loss of carbon dioxide (Loeppert and Suarez, 1996)
Apparatus
Reagents
Procedure
Calculation
Biochar
SOC Stocks: Considerations on Sampling Depth and Mass Corrections
References
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