INDEX OF SUBJECTS 
47 
Nicotine dust — 
for cucumber beetles, Wis. Bui. 355. 
making and use, N. J. Bui. 381, 400. 
volatility of nicotine, N. Y. State Bui. 
501. 
Nitrate of soda, for tomatoes, N. Y. Cornell 
Mem. 75. 
Nitrates — 
effect on potatoes, Colo. Bui. 291. 
in arid soils, toxicity, N. Mex. Bui. 142. 
Nitrification in muck soils, N. C. Tecb. Bui. 
24. 
Nitrogen — 
azofication in soil, Utab Bui. 185. 
in apple sboots, Oreg. Bui. 200. 
Nitrogenous fertilizers for apple trees, Mich. 
Spec. Bui. 127. 
Noctuidae, physical ecology, Minn. Tech. 
Bui. 12. 
North Dakota agricultural experiment sta- 
tion, report 1921-1923, N. Dak. Bui. 174. 
Nosema apis infection of bees, Minn. Tech. 
Bui. 13. 
Nutrition, animal, studies, Mo. Res. Bui. 59, 
61. 
Nuts. (See Filberts, Pecans, Walnuts.) 
Oats- 
by-products, digestion experiments, 
Tex. Bui. 315. 
cost of production, Ind. Bui. 272. 
Fowlds hulless, S. Dak. Bui. 205. 
variety tests, Wash. Bui. 179 ; W. Va. 
Bui. 192. 
Oedipodinae in Utah, Utah Bui. 191. 
Ohio agricultural experiment station, re- 
port 1923, 1924, Ohio Bui. 373, 382. 
Oil- 
emulsions, engine, Mo. Bui. 205. 
sprays, Wasb. Bui. 184. 
Olives, decomposition, Calif. Bui. 368. 
Onion — 
growing, N. Dak. Bui. 173. 
smut disease, Mass. Bui. 221. 
Orange, Satsuina, Miss. Bui. 217. 
Orange trees — 
effect of sodium chlorid and calcium 
chlorid, Calif. Tech. Paper 4. 
effect of sodium, potassium, and cal- 
cium, Calif. Tech. Paper 11. 
(See also Citrus.) 
Orchard grass seed, marketing, Ky. Bui. 
247. 
Orchards — 
cultural practices, Mont. Bui. 156. 
effect of arsenicals and marls, Colo. 
Bui. 294. 
farm, Wis. Bui. 363. 
fertilization, N. Y. State Bui. 503. 
Orchestes pallicornis, Ohio Bui. 372. 
Oriental fruit moth, Va. Bui. 234. 
Orthoptera in Utah, Utah Bui. 191. 
Pale western cutworm, N. Dak. Bui. 179. 
Paraclemensia acertfoliella, N. Y. Cornell 
Bui. 417. 
Parasites in ruminants, La. Bui. 186. 
Paratetranychus pilosus, Conn. State. Bui. 
252; Md. Bui. 264. 
Parsnips, chemical changes in storage, Md. 
Bui. 258. 
Pasture plants, yield and survival, N. Y. 
Cornell Bui. 424. 
Pastures, irrigated, Mont. Bui. 166. 
Peach — 
aphid, green, Pa. Bui. 185. 
buds, moisture index, Md. Bui. 255. 
crown gall, N. Y. Cornell Mem. 73. 
tree borer, N. J. Bui. 391. 
Peach trees — 
fertilizing, W. Va. Bui. 183. 
shading and ringing, N. H. Tech. Bui. 
23. 
Peach twig-borer, Calif. Bui. 355. 
Peaches — 
culture, Mo. Bui. 207. 
dusting versus spraying, Conn. State 
Bui. 245. 
varieties, Mich. Spec. Bui. 126. 
Peanut meal, for hogs, Ala. Bui. 224. 
Peanuts for hogs, Ala. Bui. 223. 
Pear, pineapple, Ga. Bui. 142. 
Pear psylla, fumigation, N. Y. State Bui. 
523. 
Pears — 
cold storage, Calif. Bui. 377. 
harvesting and storage, Oreg. Bui. 
206. 
pollination, Calif. Bui. 373. 
Peas — 
canned, flat sours, Mich. Tech. Bui. 
59. 
varieties for canning, N. Y. State Bui. 
526. 
Pecan — 
buds, development, Ga. Bui. 144. 
pollen, production, Ga. Bui. 144. 
trees, top working, Fla. Bui. 170. 
Pedigrees of dairy cattle, interpretation, 
Me. Bui. 318. 
Pennsylvania agricultural experiment sta- 
tion — 
publications, author index, Pa. Bui. 
180. 
report of director, 1923, 1924, Pa. 
Bui. 181, 188. 
Pepper diseases, Ga. Bui. 141. 
Petri dishes in the study of rust, Conn. 
State Bui. 260. 
Phomopsis citri, Fla. Bui. 167. 
Phorbia orassicae, N. H. Tech. Bui. 24; 
N. Y. State Bui. 512, 513. 
Phosphorus — 
in soils, Ohio Bui. 380. 
in phosphate rock, effect of heating, 
Md. Bui. 260. 
Phyllosticta solitaria, Ind. Bui. 267. 
Phymatotrichum omnivorum, Tex. Bui. 307. 
Phytonomus meles, N. Y. Cornell Bui. 420. 
Phytonomus nigrirostris, N. Y. Cornell Bui. 
420. 
Phytophaga destructor, Kans. Tech. BuL 
11. 
Phytophthora infestans, N. J. Bui. 384. 
