INDEX 



Fertilizers, commercial, 



importance of thorough 

 mixing with the soil, 15. 



manufactured, 202. 



many brands, 202. 



mixed, 202. 



raw materials, 192. 



sources of lime, 193, 200. 



sources of nitrogen, 193. 



sources of phosphoric 

 acid, 193, 195. 



sources of potash, 193, 

 199. 



use of by farmer, 172, 192. 



value of plant food in, 205. 

 Filament of stamen, 129. 

 Film water, 50. 

 Fish scrap as a fertilizer, 



194- 

 Flower, 



of apple, 129, 130. 



of buttercup, 129, 130. 



calyx, 129. 



of cherry, 129, 130. 



corolla, 129. 



of cucumber, 133. 



functions of parts of, 130. 



of honeysuckle, 129. 



of melon, 133. 



parts of, 129. 



of peach, 129, 130. 



petals, 129. 



of petunia, 129. 



pistil, 130. 



pollen, 130. 



of potato, 129. 



sepals, 129. 



stamen, 129. 



of squash, 133. 



of tomato, 129. 



of wild mustard, 129, 130. 

 Flowers, 8, 128. 



essential parts of, 131. 



functions of, 130. 

 Food of plants, 63. 

 Forces of nature and the 

 farmer, 5. 



Forest soils, 29. 



Foundation facts and prin- 

 ciples of agriculture, 22. 



Free water in the soil, 48, 



153- 



injurious to roots, 153. 

 source of capillary and 

 film water, 153. 



Fresno sand, 28. 



Fruit, 8, 136. 



Fruit soils, 29. 



Fruits, 27. 



Furrow slice, 96. 



Gas lime, 201. 

 Geranium, 6. 

 Germinating seeds, 



need air, 73. 



need heat, 73. 



need water, 71. 

 Germs, 143. 



denitrifying, 144, 147. 



nitrifying, 144, 145. 



nitrogen fixing, 144. 

 Goosefoot family, 86. 

 Gourd family, 86. 

 Grafting, 136. 

 Grain crops humus wasters, 



224. 



Grain soils, 28. 

 Grass, 5. 



family, 86. 



soils, 28, 29, 30, 162. 

 Gravel, 26. 

 Gravelly loams, 29. 

 Green-crop manures, 171, 



183. 



benefits from, 185. 

 best plants for, 185. 

 Green manure-crops, 186. 

 clovers as, 188. 

 cowpeas as, 186. 

 legumes as, 186. 

 non-leguminous, 191. 

 soy-bean as, 189. 

 time for growing, 186. 



