href="@public@vhost@g@gutenberg@html@files@16900@[email protected]#CHAPTER_V" class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">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

PART II

Soil Fertility As Affected By Farm Operations And Farm Practices