348 



INDEX 



Organic matter in soils, 9, 27, 28, 48, 



5i,53 



Osmosis, 5, 6; illus., 5 

 Ovary, 151 

 Owls, 195, 196 

 Oxford, 257 

 Oxygen, i, 2 



Pasture, 108, 115, 116 



Peach, brown rot, 168; scab, 171 



Percolation, 18 



Phosphate, 33-36, 40, 42, 52; influ- 

 encing yield of potatoes, 34; illus., 

 35; methods of using, 34 



Phosphoric acid, 36, 40, 41, 43 



Phyloxera, 192 



Pig, see Hog 



Pistil, 150, 151 



Plant diseases, see Diseases 



Plant improvement, 147-160; asso- 

 ciations, 159; by crossing, 151-153; 

 illus., 150-151; double crossing, 

 illus., 157; by introduction of 

 foreign plants, 148; high yielding 

 plants, 147; meaning of, 147; new 

 plants, sudden appearance of, 149; 

 selection, 153-160; ear-to-row 

 trial, 155; illus., 155; four-hill- 

 unit method, 158; final, 155; 

 initial, 154; illus., 153; multi- 

 plying plot, 156 



Plant introduction, Division of, 148 



Plant food, 26-30, 33, 36, 38 



Plants, helping to grow, 1-7; im- 

 proving, 147-160, see Plant im- 

 provement; diseases of, 161-172, 

 see Diseases; insect injuries of, 

 179-193, see Insects 



Planting, 69; corn, 77; alfalfa, 113, 

 114; buckwheat, 107; clover, 112; 

 cotton, 122; fruit trees, 140, 141; 

 oats, 101; plan for garden, 133, 

 134; wheat, 95 



Plowing, 19 



Plum, brown rot, 36 



Poland China, 264; illus., 263 



Pollen, 151 



Pork, cuts of, illus., 262 



Potash, 38, 40, 41, 43 



Potato beetle, 183 



Potatoes, 124-129; climate suited for, 

 126; cultivation, 126; diseases of^ 

 128, 168; dry rot of, 168; fertilizing, 

 127; harvesting, 129; improvement, 

 158; insect injuries, 128; potash 

 needed for, 38; requirements for 

 production, 126; treatment of seed, 

 164; tubers, kind for selection, illus., 

 127; value of, 124; varieties, 126 



Poultry, 278-293; care of chicks, 290; 

 care of flock, 292; constitution 

 and vigor, 281; feeding, 283-287; 

 housing, 287; improvement, 282; 

 incubation, 288, 289; kinds, 278; 

 place on farm, 278; types and 

 breeds, 280; egg laying, 280; 

 general purpose, 281; meat, 

 280 



Production records, 308 



Productive ration, dairy cows, 244 



Protein, 2, 109, 207-211, 2^3, 244, 

 266, 274, 285 



Pruning, 142, 143; illus., 140, 142 



Pupa, 185 



Purdue University, 41, 291 



Rambouillet, 255 



Ration, 207, 208, 210, 212, 244 



Records, feed, 307; labor, 306; 



production, 237, 308 

 Recreation, 324 

 Rice, 89, 105, 106 

 Rock particles, 9, 14, 15 

 Root-hair, 4, 5; illus., 4 

 Root systems, 4, 5 

 Rot, bacterial, 168; bitter, 167; 



black, 1 68; blue mold, 168; brown, 



1 68; corn root, 84, 95, 165 

 Rotation of crops, 48, 83, 92, 95, 100, 



no, 114, 115, 116, 120, 125, 129, 



132, 133, 166, 178, 188 

 Rural community, 311-326 



