188 



EXPERIMENT STATION RECORD 



Crops— see also Field crops, Forage crops, and spe- 

 cific crops. 

 absorptiou of plant food by, (31) 617. 

 and fertilizers, treatise, (27) 218. 

 and soils, textbook, (30) 695. 

 animals affecting, (30) 649. 

 as affected by- 

 climate and soils, (33) 825. 



lead nitrate. (26) 225. 



other crops, (31) 627. 



radioactive earth, (33) 123. 

 choice of, (34) 694. 

 composition as affected by irrigation, (28) 130, 



332. 

 cost of production, (26) 398; (32) 688, 791; (37) 



190, 595, 790. 

 cost of production- 

 determination, (33) 89. 



in California, (37) 890. 

 critical period of growing season, (39) 810. 

 culture — 



at high altitude, (37) 437. 



experiments, (281 147. 



in Brazil, (29) 428. 



in California, (37) 890. 



in Germany, (30) 525. 

 drought-resistant and water tolerant, (40) 891. 

 dry-land, water economy, (27) 531. 

 effect on— 



drainage water, (26) 619. 



each other, (40) 135, 623. 



nitrification in soils, (35) 321. 



nitrogen content of soils, (38) 213. 



soil bacteria, (37) 421. 

 emergency, for overflow lands, (27) 337. 

 feeding of, treatise, (34) 326. 

 fertilizer ingredients removed by, (26) 422. 

 fertilizer requirements, (28) 722; (31) 217, 820; 



(32) 620. 

 fertilizing with carbon dioxid, (28) 728. 

 field experiments, standardization, (39) 829; 



(40) 823. 

 food requirements of, (31) 215. 

 food value per acre, (38) 292. 

 for Arizona, (37) 209. 

 for dairymen, (33) 97. 

 for sandy, alkali, and hill lands, (40) 891. 

 foreign, statistics, (26) 190, 491. 

 graphic summary of seasonal work, (39) 495. 

 growing under glass. (26) 391. 

 growing without potash, (35) 325; (37) 218. 

 growth as affected by alkali, (36) 118. 

 hand chart of, (33) 429. 

 handbook, (30) 133. 

 harvested, analyses, (29) 119. 

 hoed, methods of variety testing, (26) 436. 

 hogging off in the corn belt, (32) 192. 

 identification of varieties, (26) 434. 

 improvement, (28) 827; (34) 735. 

 insects affecting, (27) 453, 552. 

 insurance against fire, (37) 888. 

 insurance against hail in France, (26) 388. 

 intertilled, tractors for, (26) 398. 

 irrigated, costs and seasonal distribution of 



labor, (40) 388. 

 laboratory manual, (36) 692. 

 laboratory material, (30) 394. 

 large v. small, in relation to prosperity, (31) 191. 

 loss in weight after harvesting, (33) 635. 

 marketing, (28) 894; (36) 91. 

 mutual influence in relation to nitrogen, (32) 



515 

 new, for Rhodesia, (40) 333, 825. 

 of India and the East, diseases, (40) 47. 

 of southern France, Algeria, Tunis, and 



Morocco, (39) 437. 

 oil producing, fertilizer experiments, (26) 129. 

 plant food combinations for, (26) 622. 

 plant food removed by, (40) 429. 

 prices in Ireland, (31) 96; (32) 594. 

 relation to— 



rainfall, (33) 715. 



temperature, (39) 615. 

 relative unDateral impoverishment of soil by, 



(39) 724. 

 school lesson on, (32) 597. 

 sulphur requirements, (26) 726. 

 textbook, (28) 298. 



Crops — Continued. 



toxic effect of copper on, (37) 527; (38) 28. 



treatise, (28) 632. 



utilization of phosphates by, (31) 823. 



vegetatively propagated, selection in, (26) 434. 



water requirements, (28) 321, 537; (30) 34; (32) 

 127; (34) 306; (35) 633. 



yield as affected by irrigation, (28) 132. 

 Cross- 

 arms, tests, (27) 443. 



breeding, variations under, (34) 864 



pollination, effect on plants, (29) 339. 



vine, notes, (27) 346. 

 Crossing-over, mechanism of, (35) 866. 

 Crossties— 



identification of wood, (38) 645. 



industry in Canada, (37) 245; (38) 147. 



industry in 1915, (37) 838. 



industry in United States, (30) 845. 



preservation, (30) 845; (33) 544; (37) 748. 



service tests, (36) 46. 



woods suitable for, (36) 46. 

 Crotalaria— 



as green manure, (37) 320. 



burkeana, notes (26) 882. 



candicans, culture experiments, (37) 131. 



Colletotrichum sp. on, (39) 453. 



diversistipula, analyses and digestibility, (27) 

 871; (32) 167. 



grandibracteata, insects affecting, (28) 555. 



juncea — 



as green manure, (30) 339; (31) 230, 722; (36) 



232. 

 culture and improvement, (28) 633. 

 nodule formation, (38) 528. 

 notes, (27) 36. 

 seed position in planting, (40) 635. 



retusa— 



analyses, (26) 126. 

 culture, (34) 736. 

 culture experiments, (27) 233. 

 • saltiana — 



fertilizing value, (32) 722. 

 notes, (40) 44. 



seeds, germination experiments, (31) 230. 



spp. as green manure, (36) 324. 



spp., culture experiments, (35) 528. 



spp., fertOizing value, (34) 34. 



striata, analyses, (29) 215. 



striata as green manure, (38) 220. 



usaramoensis as green manure, (38) 637. 



vitellina, analyses, (31) 863. 

 Crotin — 



and its antitoxins, (32) 78. 



occurrence in locust seeds, (30) 204. 

 Croton bug — 



as factor in bacterial dissemination, (30) 250. 



destruction, (38) 558. 

 Croton gratissimus, analyses and digestibilitv, (27) 



871; (32) 167. 

 a-Crotonic acid, studies, (36) 12. 

 Crotons, food plant of purple scale, (26) 756. 

 Croupous enteritis in cattle, notes, (28) 886. 

 "Crowa" fiber, tests, (31) 526. 

 Crowdy for cows, (29) 172. 

 Crowfoot, habits and eradication, (37) 542. 

 Crown gall — 



as affected by X-rays, (39) 453. 



chemically induced, (38) 648. 



inoculation experiments, (28) 447. 



nature and cause, (28) 446. 



notes, (31) 449, 746; (40) 844. 



of fruit trees, notes, (29) 348. 



relation to cancer, (35) 545, 650; (37) 245. 



resemblance to human cancer, (26) 646. 



structure and development, (27) 649. 



studies, (29) 45; (35) 244, 645; (36) 541, 747; (38) 

 752, 852. 

 Crown rot, studies, (28) 347. 

 Crows- 

 damage by, in Denmark, (26) 452. 



economic status, (38) 856. 



notes, (30) 851. 



relation to anthrax, (30) 780. 



relation to hog cholera, (30) 285. 



roosts, winter, (35) 156. 



subspecies in Colorado, (40) 853. 

 Crucianella maritima, analyses, (33) 466. 



