1920] 



INDEX OF SUBJECTS. 



981 



Potato — 



beetle, Colorado, in South Dakota, 850. 



black rot, notes, 243. 



black scurf, notes. 150. 



blackleg, notes, 150, 245. 



blackleg, viabilit.v of organism, 054. 



blight, early, notes, 152. 



blight, late, comparison with tomato 



late blight, 447. 

 blight, late, notes, 44, 151, 162. 

 blight, late, remedies, 248. 

 blight, late, studies, 547. 

 blight on tomato, 154. 

 blights, notes, 150. 

 brown ring, notes, 243. 

 diseases, notes, 45, 652. 

 diseases In British IsioB, 245. 

 flea beetle In South Dakota, 850. 

 Fusarium wilt, studies, 447 ; Ind., 345. 

 hopper burn, control, 655. 

 insects, control, 851. 

 leaf roll, effect on tubers, 546. 

 leaf roll, studies, 154. 

 leafhoppers, studies, 355, 356, 655. 

 mosaic disease, transmission, 546. 

 Rhizoctonia, control, 547. 

 Rhizoctonia. notes. 47, 243, 652. 

 Rhizoctonia, studies, Wash., 749. 

 rust, notes, 346. 

 scab, notes, 243, 652. 

 scab, control. 532, 547, 751. 

 scab organism, nomenclature, 655. 

 scab, resistant varieties, Vt., 153. 

 shipments for 1919, U.S.D.A., 595. 

 starch manufacture, processes, 808. 

 starch, raw, digestibility, 365. 

 tipburn, studies, 356; Ind., 845; Vt., 



154. 

 tops, poisoning of cows, 180. 

 tuber worm on tobacco, 52. 

 tubers, rate of desiccation. 845. 

 tubers, spindling sprout disease, Md., 



154. 

 wart disease, certiflcatioa of Immune 



varieties, 47. 

 wart disease, In England, control, 348. 

 wart disease, notes, 45, 245. 

 wart disease, resistant varieties, 245. 

 wet rot, notes, 248. 

 wilt diseases, 54 f. 

 Potatoes — 



American Giant, situation in New 



York, 531. 

 aphids affecting, control, Va.Truck, 451, 

 as affected by potassium salts, 630. 

 as affected by sodium chlorid, 030. 

 as dry-farm crop, Ariz., 733. 

 changes after frost kills vines. Md.. 



139. 

 cost of production In New Jersey, 532. 

 cross-fertilization, technique, 829. 

 culture experiments. 234 ; Minn., 637, 



823, 824 ; Mo., 740 ; N.Mex., 832. 

 culture, handbook, 829. 

 culture, losses from poor seed, 531. 

 culture on peat soil, 23. 

 degeneration in, Mont., 46. 



Potatoes — Continued. 



degeneration, relation to depth of eyes, 



531. 

 dried, fat determination in, 414. 

 effect of Bordeaux mixture on plants, 



547. 

 effect of cold storage on seed value, 



Md., 138. 

 effect of new location, Minn., 636. 

 effect of reduced oxygen on keeping qual- 

 ity, N.H., 34. 

 effect of .soil electrification, Ky., 824. 

 fertilizer experiments, 126, 231, 234, 



532 ; Can., 727 ; Minn., 627, 824. 

 grades, U.S.D.A., 335. 

 grading and inspection, N.C., 490. 

 hill selection experiments, 527. 

 insects affecting, 532, 652. 

 iodin content, 204, 632. 

 irri.gatlon experiments, N.Mex., 332 ; 



Utah, 230. 

 late, culture. Mo., 740. 

 manuring experiments, 24 ; Minn., 627, 



815; Utah, 218. 

 nematodes affecting, 243, 350. 

 osmotic pressure in, 131. 

 planting dates, U.S.D.A., 485. 

 planting, digging, and sorting ma- 

 chines, 188. 

 planting distances, Idaho, 740. 

 protection in Quebec, 844. 

 raw and dried, vitamin C in, 765. 

 rotation experiments, U.S.D.A., 435. 

 rumors of dumping, U.S.D.A., 794. 

 seed, as affected by sprout production, 



Md., 138. 

 seed certification, 531. 

 seed inspection, 531. 

 seed, irrigated v. dry-land, Idaho, 739. 

 seed, planting date, Ohio, 740. 

 seed, preparation, Mich., 639. 

 seed production in Maine, 532. 

 seed selection. Wash., 798. 

 seed stocks, comparison, Ind., 339. 

 seed, treated v. untreated, Minn., 037. 

 seed treatment, 547, 732 ; Mich., 698. 

 seed, whole v. cut, Idaho, 739. 

 solanin-containing, poisoning, 866. 

 spraying, notes, 833, 

 spraying experiments, 356, 447 ; N.C., 



450; U.S.D.A., 843; Va.Truck, 451. 

 sprouting and greening, prevention, 



436. 

 sprout production, relation to seed 



value, Md., 138. 

 storage experiments, 436, 830. 

 storage houses, 829. 

 storage methods, Ariz., 734. 

 thinning experiments, 531. 

 variety tests, 232, 234 ; Ariz., 734 ; La., 



636; Minn., 036, 823; N.Mex., 332; 



Nev., 229 ; Tex., 34 ; U.S.D.A., 330, 



435; Wyo.. 135. 

 vitamin A in, 165. 

 wound cork formation in relation to 



seed piece decay, 732. 



