| Chapter | | Page |
| [I.] | Introduction to Plants | 3 |
| [II.] | Roots | 9 |
| | Uses of roots to plants | 9 |
| | Habit of growth of roots | 11 |
| | Conditions necessary for root growth | 20 |
| [III.] | Soils | 23 |
| | Relation of soil to plants | 23 |
| | Classification of soils | 26 |
| | How were soils made? | 30 |
| | Soil texture | 37 |
| [IV.] | Relation of Soils to Water | 39 |
| | Importance of water to plants | 39 |
| | Sources of soil water | 40 |
| | Attitude of soils toward water: | |
| | Percolation | |
| | Absorption from below | |
| | Power to hold water | 40 |
| | The effect of working soils when wet | 45 |
| [V.] | Forms of Soil Water | 48 |
| | Free water | 48 |
| | Capillary water | 49 |
| | Film water | 50 |
| [VI.] | Loss of Soil Water | |
| | By surface wash | |
| | By percolation and leaching | |
| | By evaporation | |
| | By transpiration | |
| | How to check these losses | 53 |
| [VII.] | Soil Temperature | 57 |
| | How soils are warmed | 58 |
| | How soils lose heat | |
| | How to check loss of heat | 59 |
| | Conditions which influence soil temperature | 60 |
| | Value of organic matter | 61 |
| [VIII.] | Plant Food in the Soil | 63 |
| [IX.] | Seeds | 70 |
| | Conditions necessary for sprouting | 70 |
| | Seed testing | 75 |
| | How the seeds come up | 77 |
| | Use of cotyledons and endosperm | 79 |
| [X.] | Seed Planting | 81 |
| | Depth of planting: | |
| | Operation of planting | |
| | Planting machines | 81 |
| | Seed classification | 85 |
| | Transplanting | 87 |
| [XI.] | Spading and Plowing | 90 |
| | Spading the soil | 90 |
| | Plowing | 91 |
| | Why we spade and plow | 91 |
| | Parts of a plow | 92 |
| | Characteristics of a good plow | 95 |
| | The furrow slice | 96 |
| | How deep to plow | 96 |
| | "Breaking out the middles" | 97 |
| | Ridging the land | 98 |
| | Time to plow | 98 |
| | Bare fallow | 100 |
| [XII.] | Harrowing and Rolling | 101 |
| | Harrowing: | |
| | Why we harrow | |
| | Time to harrow | 101 |
| | Types of harrows | 102 |
| | Rolling | 106 |
| [XIII.] | Leaves | 108 |
| | Facts about leaves | 108 |
| | The uses of leaves to plants: | |
| | Transpiration | |
| | Starch making | |
| | Digestion of food | |
| | Conditions necessary for leaf work | 109 |
| | How the work of leaves is interfered with | 115 |
| [XIV.] | Stems | 120 |
| | What are stems for? | 120 |
| | How the work of the stem may be interfered with | 126 |
| [XV.] | Flowers | 128 |
| | Function of flowers | 128 |
| | Parts of flowers | 129 |
| | Functions of the parts: | |
| | Cross pollination | 130 |
| | Value of a knowledge of the flowers | 134 |
| | Fruit | 136 |
| Chapter | | Page |
| [XVI.] | A Fertile Soil | 141 |
| | Physical properties: | |
| | Power to absorb and hold water | |
| | Power of ventilation | |
| | Power to absorb and hold heat | 142 |
| | Biological properties | 143 |
| | Nitrogen-fixing germs | 144 |
| | Nitrifying germs | 145 |
| | Denitrifying germs | 147 |
| | Chemical properties: | |
| | Nitrogen in the soil | |
| | Phosphoric acid in the soil | |
| | Potash in the soil | |
| | Lime in the soil | |
| | Great importance of physical properties | 147 |
| | Maintenance of fertility | 150 |
| [XVII.] | Soil Water | 151 |
| | Importance of soil water | 151 |
| | Necessity of soil water | 151 |
| | Sources and forms of soil water | 153 |
| | Too much water | 154 |
| | Not enough water | 154 |
| | Loss of soil water | 155 |
| | How some farm operations influence soil water | 156 |
| | Hoeing, raking, harrowing and cultivating | 158 |
| | Manures and soil water | 159 |
| | Methods of cropping and soil water | 159 |
| | Selection of crops with reference to soil water | 160 |
| [XVIII.] | The After-cultivation of Crops | 164 |
| | Loss of water by evaporation | 164 |
| | Loss of water through weeds | 165 |
| | Saving the water | 165 |
| | Time to cultivate | 166 |
| | Tools for after-cultivation | 167 |
| | Hilling and ridging | 169 |
| [XIX.] | Farm Manures | 171 |
| | The functions of manures and fertilizers | 171 |
| | Classification | 171 |
| | Importance of farm manures | 172 |
| | Barn or stable manure | 173 |
| | Loss of value | 173 |
| | Checking the losses | 176 |
| | Applying the manure to the soil | 177 |
| | Proper condition of manure when applied | 179 |
| | Composts | 181 |
| [XX.] | Farm Manures, Concluded | 183 |
| | Green-crop manures: | |
| | Functions | 183 |
| | Benefits | 185 |
| | Character of best plants for green-crop manuring | 185 |
| | The time for green-manure crops | 186 |
| | Leguminous green-manure crops | 186 |
| | Non-leguminous green-manure plants | 191 |
| [XXI.] | Commercial Fertilizers | 192 |
| | The raw materials | 192 |
| | Sources of nitrogen | 193 |
| | Sources of phosphoric acid | 195 |
| | Sources of potash | 199 |
| | Sources of lime | 200 |
| [XXII.] | Commercial Fertilizers, Continued | 202 |
| | Mixed fertilizers: | |
| | What they are | |
| | Many brands | |
| | Safeguard for the farmer | |
| | Low grade materials | |
| | Inflating the guarantee | 202 |
| | Valuation | 205 |
| | Low grade mixtures | 207 |
| | Buy on the plant food basis | 209 |
| [XXIII.] | Commercial Fertilizers, Concluded | 211 |
| | Home mixing of fertilizers | 211 |
| | Kind and amount to buy | 212 |
| | The crop | 213 |
| | The soil | 215 |
| | The system of farming | 215 |
| | Testing the soil | 215 |
| [XXIV.] | Rotation of Crops | 219 |
| | Systems of cropping | 219 |
| | The one crop system | 221 |
| | Rotation of crops | 224 |
| | Benefits derived from rotation of crops | 230 |
| | The typical rotation | 231 |
| | Conditions which modify the rotation | 232 |
| | General rules | 233 |
| | Length of rotation | 233 |
| [XXV.] | Farm Drainage | 235 |
| | How surplus water affects fertility | 235 |
| | Indications of a need of drainage | 235 |
| | Drains: | |
| | Surface drains | |
| | Open ditch drains | |
| | Covered drains or under drains | 236 |
| | Influence of covered drains on fertility | 237 |
| | Location of drains: | |
| | Grade | |
| | Tile drains | 238 |
| | [Glossary] | 241 |