INDEX 



437 



meat in oats from, 261 ; present 

 status of dry-farming, 385, 389 ; 

 fourth Dry-farming Congress in 

 Billings, 377. 



Montana Station, dry-farm work 

 begun, 369 ; on fallowing, 202 ; 

 water stored in soil, 120. 



Mormon, pioneers began reclama- 

 tion of West, 365. 



Morton, J. S., Secretary of Agri- 

 culture, 372. 



Motherwell, record of dry-farm, 410. 



Mulch, see also Cultivation; value 

 in reducing evaporation, 155 ; 

 explanation of effect of mulch, 

 152 ; natural mulch in arid cli- 

 mates, 149 ; on different soils, 

 149 ; effect of varying depth of, 

 158 : implements for making a 

 soil, 310. 



Natural precipitation, see Rainfall. 



Nebraska, area, 26 ; type of rainfall 

 over, 41 ; soils of, 74 ; deep and 

 fall plowing in, 195 ; fallowing 

 in, 197 ; storing the rains in the 

 soil, 115; water stored in soils 

 of, 122 ; wheats for, 236 ; milo 

 in, 246 ; present status of dry- 

 farming, 389. 



Nessler, 139, 154. 



Nevada, area, 26 ; typo of rainfall 

 over, 39 ; soils of, 75 ; evapora- 

 tion in, 132; fallowing in, 196; 

 present status of dry-farming in, 

 386. 



Nevada Station, dry-farming in, 

 369. 



Newell, 32. 



New Mexico, area, 26 ; type of 

 rainfall over, 39 ; soils of, 74, 76 ; 

 evaporation in, 132 ; fallowing in, 

 197 ; experiments on pumping, 

 343 ; mesquite and cacti on dry- 

 farm lands, 305 ; milo in, 245 ; 

 present status of dry-farming in, 

 388, 390. 



Nitrates, and transpiration, 190 ; 

 effect on germination, 210. 



Nitrogen, in arid humus, 59, 71 ; 

 critical element of soil fertility, 

 292 ; explanation of accumula- 

 tion of, 292 ; from leguminous 

 crops, 296 ; from lucern, 249. 



Not)be, 84, 85. 



Norris, Governor, president Dry- 

 farming Congress, 377. 



North Dakota, area, 26 ; fallowing 

 in, 197 ; meat in oats from, 261 ; 

 present status of dry-farming in, 

 389. 



North Dakota Station, dry-farming 

 in, 370. 



Nowoczek, 217. 



Nutrients, see Plant-foods; in crops, 

 264. 



Oak, on dry-farm, 253. 



Oats, 241 ; pounds, water for one 

 pound, 14, 15 ; depth of roots, 

 88 ; water absorbed by seeds of, 

 209 ; repeated drying in germina'- 

 tion, 218 ; amount to sow, 224 ; 

 meat in oats, 261 ; in rotations, 

 299 ; variation in composition, 

 268, 269. 



Odessa Station, 370. 



Office of Dry Land Investigations, 

 373. 



Ohio potatoes, 254. 



Oil, crude oil engines for pumping, 

 342. 



Oklahoma, area, 27 ; type of rain- 

 fall over, 40 ; soils of, 74 ; milo 

 in, 245 ; present status of dry- 

 farming in, 390. 



Olin, 357. 



Olive, dry-farm olive orchards in 

 United States, 252 ; industry in 

 Tunis, 252 ; trees in Tunis in 

 early days, 353 ; tax of oil from 

 Tunis, 353. 



Oregon, area, 26 ; type of rainfall 

 in, 39 ; soils of, 75 ; evaporation 



