A Practical Course in Agricultural Chemistry - 1st Edition - ISBN: 9780080124605, 9781483160030

A Practical Course in Agricultural Chemistry

1st Edition

The Commonwealth and International Library: Agriculture and Forestry Division

Authors: D. W. Gilchrist Shirlaw
Editors: J. E. Nichols
eBook ISBN: 9781483160030
Imprint: Pergamon
Published Date: 1st January 1967
Page Count: 170
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Description

A Practical Course in Agricultural Chemistry provides practical methods in agricultural chemistry. This book discusses the major developments in agricultural analysis, including the atomic absorption technique and gas chromatography. Organized into six chapters, this book starts with an overview of the best instrument to use in soil sampling. This text then discusses a number of various methods for the mechanical analysis of soils. Other chapters consider the methods for the determination of phosphate, nitrogen, and potash in farmyard manure. This book discusses as well the methods for the determination of some of the individual minerals. The final chapter deals with the variation of the color of a solution with a change in the concentration of one of its constituents, which forms the basis of colorimetric analysis. This book is a valuable resource for students taking agricultural chemistry as a subsidiary course as well as for students in farm institutes or agricultural colleges.

Table of Contents


Author's Preface

Chapter 1 The Analysis of Soils

1.1 Soil Sampling

1.2 The Preparation of the Sample

1.3 The Mechanical Analysis of Soils

1.4 a Field Method for Textural Classification

The Determination of Apparent Density, True Density, and Pore Space

1.5 The Determination of Apparent Density

1.6 The Determination of True Density

1.7 The Calculation of Pore Space in Soils

The Determination of Soil Organic Matter

1.8 The Determination of Total Organic-Matter Content by Loss on Ignition

1.9 The Determination of Organic Matter From The Carbon Content of Soils

1.10 The Determination of Nitrogen in Soils

1.11 The Separation of Humus

1.12 The Fractionation of Soil Organic Matter

The Determination of Carbonate in Soils

1.13 a Simple Method for the Determination of Carbonate in Soils

1.14 The Determination of Carbonate by Collins' Calcimeter

1.15 The Determination of Carbonate by Titration

The Determination of Soil Reaction

1.16 Electrometric Determination of Soil Reaction

1.17 The B.D.H. Soil Test

1.18 The Tintometer Soil Reaction Test

1.19 The Determination of Lime Requirement by Woodrufts Buffer Solution

1.20 a Colorimetric Technique for Lime Requirement

1.21 The Determination of Lime Requirement by the Method of Hutchinson and Maclennan

1.22 The Estimation of Lime Requirement from Soil Reaction

1.23 Lime Requirement and Available Calcium

The Determination of Nutrient Status

1.24 Laboratory Method for the Extraction of Available Nutrients

1.25 Determination of Phosphate with a Colorimeter or with Standard Solution

1.26 The Determination of Potash by Flame Photometry

1.27 The Determination of Calcium by Atomic Absorption

1.28 The Estimation of Lime Requirement from Available Calcium

1.29 The Determination of Calcium by Flame Photometry

1.30 The Determination of Magnesium by Atomic Absorption

1.31 The Colorimetric Determination of Magnesium

1.32 Field Method for Available Nutrients

1.33 The Determination of Phosphate in the Field

1.34 The Determination of Potash by Turbidimetry

The Examination of Cation Exchange Properties

1.35 The Determination of Exchangeable Hydrogen

1.36 The Quantitative Determination of Metallic Cations That are Not Present as Soluble Salts

1.37 The Quantitative Determination of Metallic Cations That are also Present as Soluble Salts

1.38 The Determination of Cation Exchange Capacity of Soils

Chapter 2 The Examination of Fertilizers and Manures

2.1 Introduction

2.2 Sampling and Dry-Matter Determination

2.3 The Determination of Organic Matter

2.4 The Determination of Nitrogen

2.5 The Determination of Phosphate

2.6 The Determination of Potash

2.7 The Gravimetric Determination of Potash

Chapter 3 The Proximate Analysis of Feeding Stuffs

3.1 Introduction

3.2 Sampling: Dry-Matter Estimation and Preparation of Sample

3.3 Determination of Total Minerals (Ash)

3.4 Extraction of Minerals and Percentage of Insoluble Ash

3.5 The Determination of Individual Minerals

3.6 The Determination of Sodium

3.7 The Determination of Potassium

3.8 The Determination of Calcium by Atomic Absorption

3.9 The Determination of Calcium by Flame Photometry

3.10 The Determination of Magnesium by Atomic Absorption

3.11 The Determination of Magnesium by Colorimetry

3.12 The Determination of Phosphate

3.13 The Determination of Crude Protein

3.14 The Determination of Digestible Crude Protein

3.15 The Determination of Crude Fat — Ether Extract

3.16 The Determination of Crude Fiber

3.17 The Calculation of Nitrogen-Free Extractive (Soluble Carbohydrates)

3.18 The Estimation of Starch Equivalent

3.19 The Presentation of Results

Chapter 4 The Analysis of Milk

4.1 Introduction

4.2 The Gravimetric Determination of Total Solids

4.3 The Determination of Total Solids by the Density Hydrometer

4.4 The Gerber Fat Test

4.5 A Gravimetric Method for Determining Milk Fat (Modified Rose and Gottlieb Method)

4.6 The Determination of Total Proteins in Milk

4.7 The Determination of Non-Casein Nitrogen

4.8 The Determination of Lactose

4.9 Titratable Acidity of Milk

4.10 The Determination of Ash in Milk

4.11 The Hortvet Method for Depression of Freezing-Point

Chapter 5 Special Biochemical Techniques

5.1 The Determination of The Reaction of Silages

5.2 The Determination of Volatile Fatty Acids by Gas Chromatography

5.3 Volatile Fatty Acids by Paper Chromatography

5.4 The Determination of Lactic Acid

5.5 The Determination of Lactic Buffering Capacity of Grass Intended for Silage

5.6 The Characterization of Carbohydrates

5.7 The Extraction of Soluble Carbohydrates

5.8 The Hydrolysis and Extraction of Hemicelluloses

5.9 The Hydrolysis and Extraction of Cellulose

5.10 The Determination of Lignin

5.11 Colorimetric Estimation of Carbohydrate in Solution

5.12 The Determination of Fructosan

5.13 The Determination of Fructose, Pentoses and Other Sugars

5.14 The Determination of True Protein

5.15 The Determination of Gross Energy

5.16 Artificial Rumens

5.17 The Determination of Volatile Fatty Acids in Rumen Sample

5.18 Semi-Micro Technique for In Vitro Digestibility Determinations

5.19 The Estimation of Amino Acids by Paper Chromatography

Chapter 6 Some of The Instruments in Agricultural Chemistry

6.1 The Electrometric pH Meter

6.2 The Flame Photometer

6.3 The Atomic Absorption Apparatus

6.4 The Colorimeter and the Spectrophotometer

6.5 The Ballistic Bomb Calorimeter

6.6 The Gas Chromatograph

Details

No. of pages:
170
Language:
English
Copyright:
© Pergamon 1967
Published:
Imprint:
Pergamon
eBook ISBN:
9781483160030

About the Author

D. W. Gilchrist Shirlaw

About the Editor

J. E. Nichols