1919] 



INDEX OF SUBJECTS, 



997 



Sugar cane — 



borer, control by parasites, 261, 4&2. 



borer, motb, studies, U.S.D.A., 60. 



borer on banana, 060. ^ 



Ijreeding experiments, 528, 736, 830. 



bud variations in, 337. 



chlorin in, determination and effects, 

 736. 



culture experiments, 529, 729, 82»;. 



culture in Burma, 529. 



culture in Hawaii, 730. 



culture in Soutb Africa, 528. 



culture in St. Vincent, 528. 



diseases, notes, 450, 841. 



distribution of solutes in sap, 525. 



experiments, study of, 234. 



fertilizer experiments, 528, 529, 533, 

 817, 826. 



frogbopper blight, notes, 843. 



grubs in Antigua, 462. 



grubs, remedies, 251. 



improvement in India, 522, 529. 



insects affecting. 354. 



Japanese, as silage crop, Tex., 30. 



Japanese, fertilizer experiments, Fla., 

 527. 



Japanese, spraying witli copperas, 

 Hawaii, 138. 



juice, cbanges during- sirup manufac- 

 ture, 507. 



smut, studies, 52. 



spacing experiments, 338. 



stripping experiments, 534. 



varieties as affected by salinity, 73t!. 



varieties in Java, 644. 



varieties in Porto Rico, 830. 



variety tests, 528, 529, 736, 825, S26. 



yellow striix", control, 347. 

 Sulfofication — 



effect on rock phosphate, 324. 



effect on soil constituents, 324. 

 Sulphate — 



of ammonia. (See Ammonium sul- 

 phate.) 



of potash. (See Potassium .sulphate.) 

 Sulphates — 



determination, 205, 411, 505. 



effect on soil solubility, Mich., 512. 



fertilizing value, 427. 

 Sulphoichthyolate preparations, 781. 

 Sulphur — 



ammonium wash, preparation and use, 

 751. 



atomic, fungicidal value, 657. 



determination in feeds and feces. 712. 



determination in foods, 505. 



dioxid, effect on soils and crops, 427. 



effect on green.sand potash, 799. 



effect on mineral phosphate, 131. 



effect on soils, 427. 



fertilizing value, 427. 



(See also Lime-sulphur.) 

 Sulphuric acid, effect on soils, 427. 

 Sulphurous acid, determination, 112. 

 Sumac — 



oil from, 710. 



psyllid in New Jersey, 549. 



Sunflower seeds, oil from, 209. 

 Sunflowers — 



as forage crop, N.Mex., 139. 



as phytometers, 327. 



as silage crop. 732 ; Nev., 227. 



as source of potash, 818. 



culture experiments, 230, 333. 



germination as affecte<l by organic 



sulistances, 523. 

 hybridization, 727. 

 Sunlight — 



bactericidal action, 681. 



i-elation to aldehyde production by 



chlorophyll, 133. 

 Superphosphate — 



and ammonium sulphate mixtures, set- 

 ting of, 425. 

 hisulphate, 723. 



effect on potash solubility, 126. 

 fertilizing value, 228, 229, 516, 814 ; 



Ala. College, 336 ; Ark., 130. 



(See also Phosphates, compari- 

 son.) 

 for alfalfa, Kans., 33. 

 for grain in Minnesota, 425. 

 manufacture, 628. 



reaction with calcium carbonate, 720. 

 Swamp — 



drainage, dynamite for, 483. 



fever in Wyoming, Wyo., 478. 



land in United States, U.S.D.A., 693. 



soils, culture experiments, Minn., 387. 



soils, effect on composition of crops, 



422. 813. 

 soils, fertilizer experiments, 813. 

 soils, management, 624. 

 Swedes — 



antiscorbutic value, 860. 

 culture in Minnesota, Minn., 387. 

 dry rot, studies. 657. 

 nutritive value, 557. 

 sodium for, R.I., 426. 

 time of sowing, 234. 

 Sweet clover — 



annual white, Hawaii, 138 : Idaho, 



225 ; Iowa, 227. 

 as hog pasture, U.S.D.A., 72. 

 as pasture crop, Nebr., 434. 

 culture experiments, Idaho, 225 ; N. 



Dak., 824. 

 culture on Canada prairies, 732. 

 culture on sandy soils. Wis., 18. 

 cutting at different heights, N.Dak., 



140. 

 for improvement of native pasture, 



Kans., 35. 

 bay, feeding value. Kans.. 71. 

 inoculaticm experiments, 523. 

 oats as nurse crop. Mo., 637. 

 root rot, Ariz., 345. 

 seeding experiments, N..T.. 35 ; Nebr., 



434. 

 silage, preparation, N.I>ak.. 140. 

 silage, studies, Mo., 334. 

 white, as affected by wet conditions, 



N.Dak., 140. 

 white, culture experiments, Ariz., 332. 



