XXV111 



THE ESSENTIALS OF AGRICULTURE 



Dietrich, William, 408 



Diseases of hogs, 405-406 



Diseases of plants. See Plant diseases 



Disking to destroy insects, 310 



Diversified farming, 439-440 



Doane, D. H., 417 



Dock, 63, in 



Dodder, 287-288 



Domestic animals, age of, indicated 

 by teeth (Appendix H), xii-xiii 



Dondlinger, P. T., 176 



Dragon flies, 302, 308 



Drainage, 122 ff.; effects of, 122; 

 kinds of, 122-123; lands needing 

 tiling, 123-124 



Dried blood, 102, 326 



Dry farming, 126 ff. ; definition of, 

 126-127; dry-farming areas, 127- 

 128; rainfall and other climatic 

 conditions, 128; conserving mois- 

 ture, 129; summer fallow, 129-130; 

 crops for dry farming, 131 



Dry rot of potatoes, 291 



Ducks, 310. See also Poultry 



Duggar, B. M., 34, 299 



Duggar, J. F., 190, 247 



Durra, 227 



Dutch Belted Breeders' Association, 

 371 



Ear-row method of selection, 13-14 



Eckles, C. II., 371 



Eggs, 326; testing of, 431. See also 

 Poultry 



Egypt, cotton in, 178 



Electric motors, 454 



Elliott, C. G., 132 



Elms, 63, 281 



Embryo, the, 35-36 



Emmer, 403 



England, consumption of sugar in, 

 236; beef cattle in, 381 ; swine in, 

 398; development of sheep in, 41 1- 

 416; origin of poultry breeds in, 4 1 9 



Ensilage. See Silos and silage 



Enzymes, 18, 32, 36, 37, 289, 322, 327 



Epidermis, 30 



Erosion, 84-86 



Europe, corn in, 135 ; apples in, 262 ; 

 oranges in, 262 ; forests in, 279 



Exercises, 45-48, 56-57, 69-71, 80- 

 81, 90, 99, 113-114, 121, 154-155, 

 176, 190, 222, 230, 235, 261, 276- 

 277, 285, 298-299, 319, 350-351, 

 3?o, 379-3 8o > 447-448 



Fallow, 128, 129-131 



Farm, size of, in relation to profits, 



43M39 



Farm accounts, 442 ff. ; keeping ac- 

 counts, 442 ; inventories, 442443 ; 

 what accounts to keep, 443 ; how 

 to keep accounts, 443-446 



Farm incomes, 5-6 



Farm management, 436ff.\ cardinal 

 principles, 436; size of farm, 436- 

 437 ; capital and profits, 437 ; why 

 the small business docs not pay, 

 437-439 ; diversification of farm 

 operations, 439440 ; distribution 

 of farm labor, 440441 ; horse labor, 

 441; utilization of farm products, 442 



Farm products, standardization 0^442 



Fat, 325-326, 327 



Fattening cattle, silage for, 259, 392- 



393 



Feeding animals, 320 ff., 339-346, 365- 

 368, 401-405, 425-429; animal prod- 

 ucts, 320; uses of feed, 320-321; 

 regulation of maintenance feed, 

 321 ; what the animal produces, 

 321-322; digestion of feed, 322- 

 323 ; improved and poor animals 

 compared, 324 ; digestibility of 

 feeds, 324-325 ; feeding and water- 

 ing, 325; protein, 325-326; carbo- 

 hydrates, 327 ; fats, 327 ; mineral 

 nutrients, 327-328; balanced ra- 

 tions, 328 ; why animals fatten, 328 



Fertility. See Soil fertility 



Fertilizers, commercial, 101 ff., 183- 

 184 ; need of, 101 ; extent of use of, 

 101-102; dried blood, 102 ; nitrate of 

 soda, 102; nitrogenous, 102; sulphate 

 of ammonia, 102; tankage, 102; low- 

 grade nitrogenous, 103 ; phosphatic, 

 103-104; bone-meal, 104; phosphate 

 rock, 105; potassium fertilizers, 105- 

 106; potassium chloride, 106; potas- 

 sium sulphate, 106 ; wood ashes, 

 106; mixed fertilizers, 107-108; 

 fertilizer formulae, 108 ; state con- 

 trol, 108; computingfertilizervalucs, 

 108-109; applying fertilizers, 109; 

 home mixing of fertilizers, 109 ; fer- 

 tilizers for different crops, 109-1 10 ; 

 lime, 1 10-112; possible injury to 

 soil, 1 1 2. Sec a/so Barnyard manure 



Feterita, 227 



Fiber crops, 777 ff. See also Cotton, 

 Flax, Hemp 



