CONTENTS

PART I

General Principles Underlying Plant Culture

Chapter Page
[I.]Introduction to Plants3
[II.]Roots9
Uses of roots to plants9
Habit of growth of roots11
Conditions necessary for root growth20
[III.]Soils23
Relation of soil to plants23
Classification of soils26
How were soils made?30
Soil texture37
[IV.]Relation of Soils to Water39
Importance of water to plants39
Sources of soil water40
Attitude of soils toward water:
Percolation
Absorption from below
Power to hold water40
The effect of working soils when wet45
[V.]Forms of Soil Water48
Free water48
Capillary water49
Film water50
[VI.]Loss of Soil Water
By surface wash
By percolation and leaching
By evaporation
By transpiration
How to check these losses53
[VII.]Soil Temperature57
How soils are warmed58
How soils lose heat
How to check loss of heat59
Conditions which influence soil temperature60
Value of organic matter61
[VIII.]Plant Food in the Soil63
[IX.]Seeds70
Conditions necessary for sprouting70
Seed testing75
How the seeds come up77
Use of cotyledons and endosperm79
[X.]Seed Planting81
Depth of planting:
Operation of planting
Planting machines81
Seed classification85
Transplanting87
[XI.]Spading and Plowing90
Spading the soil90
Plowing91
Why we spade and plow91
Parts of a plow92
Characteristics of a good plow95
The furrow slice96
How deep to plow96
"Breaking out the middles"97
Ridging the land98
Time to plow98
Bare fallow100
[XII.]Harrowing and Rolling101
Harrowing:
Why we harrow
Time to harrow101
Types of harrows102
Rolling106
[XIII.]Leaves108
Facts about leaves108
The uses of leaves to plants:
Transpiration
Starch making
Digestion of food
Conditions necessary for leaf work109
How the work of leaves is interfered with115
[XIV.]Stems120
What are stems for?120
How the work of the stem may be interfered with126
[XV.]Flowers128
Function of flowers128
Parts of flowers129
Functions of the parts:
Cross pollination130
Value of a knowledge of the flowers134
Fruit136

PART II

Soil Fertility As Affected By Farm Operations And Farm Practices

Chapter Page
[XVI.]A Fertile Soil141
Physical properties:
Power to absorb and hold water
Power of ventilation
Power to absorb and hold heat142
Biological properties143
Nitrogen-fixing germs144
Nitrifying germs145
Denitrifying germs147
Chemical properties:
Nitrogen in the soil
Phosphoric acid in the soil
Potash in the soil
Lime in the soil
Great importance of physical properties147
Maintenance of fertility150
[XVII.]Soil Water151
Importance of soil water151
Necessity of soil water151
Sources and forms of soil water153
Too much water154
Not enough water154
Loss of soil water155
How some farm operations influence soil water156
Hoeing, raking, harrowing and cultivating158
Manures and soil water159
Methods of cropping and soil water159
Selection of crops with reference to soil water160
[XVIII.]The After-cultivation of Crops164
Loss of water by evaporation164
Loss of water through weeds165
Saving the water165
Time to cultivate166
Tools for after-cultivation167
Hilling and ridging169
[XIX.]Farm Manures171
The functions of manures and fertilizers171
Classification171
Importance of farm manures172
Barn or stable manure173
Loss of value173
Checking the losses176
Applying the manure to the soil177
Proper condition of manure when applied179
Composts181
[XX.]Farm Manures, Concluded183
Green-crop manures:
Functions183
Benefits185
Character of best plants for green-crop manuring185
The time for green-manure crops186
Leguminous green-manure crops186
Non-leguminous green-manure plants191
[XXI.]Commercial Fertilizers192
The raw materials192
Sources of nitrogen193
Sources of phosphoric acid195
Sources of potash199
Sources of lime200
[XXII.]Commercial Fertilizers, Continued202
Mixed fertilizers:
What they are
Many brands
Safeguard for the farmer
Low grade materials
Inflating the guarantee202
Valuation205
Low grade mixtures207
Buy on the plant food basis209
[XXIII.]Commercial Fertilizers, Concluded211
Home mixing of fertilizers211
Kind and amount to buy212
The crop213
The soil215
The system of farming215
Testing the soil215
[XXIV.]Rotation of Crops219
Systems of cropping219
The one crop system221
Rotation of crops224
Benefits derived from rotation of crops230
The typical rotation231
Conditions which modify the rotation232
General rules233
Length of rotation233
[XXV.]Farm Drainage235
How surplus water affects fertility235
Indications of a need of drainage235
Drains:
Surface drains
Open ditch drains
Covered drains or under drains236
Influence of covered drains on fertility237
Location of drains:
Grade
Tile drains238
[Glossary]241