1058 
Journal of Agricultural Research 
Vol. XXIV 
Stem rust— Page 
biologic forms distribution, studies. 981,1003-zoxo 
grain, biologic forms, morphology, statis¬ 
tical study. 539-568 
infection of Marquis-Kota wheat cross, 
experiments. looi-ioio 
pats, biologic forms on varieties. 1013-1018 
results of crossing varieties of wheat.989-994 
resistance, inheritance in durum wheat 
crosses, color relations.979-996 
biological forms, differences, studies. 458,467-469 
wheat, resistance in a cross of common 
wheat.457-470 
Stem streak, potato, relation to phloem necro¬ 
sis. 242 
Stizilobium deeringtanum^ nutritive value.,. 433-440 
Storage apple, temperature relation— 
to disease... 165,169-171 
to internal browning. 169-^171 
Straw, utilization as energy source for Azoto- 
bacter, results. 271-273 
Stripe— 
disease, barley, cause, symptoms, descrip¬ 
tion, and control.642,650-656 
rust. See Rust, stripe. 
Striped Sod Webworm, Crambus mutabilis 
Clemens: George G. Ainslie... 399-4*4 
Studies of the Temperature of Individual 
Insects, with Special Reference to the 
Honey Bee: Gregor B. Pirsch. 275-288 
Studies on the Life History of Stripe Rust, 
Piiccinia glumarum (Schm.) Erikss. & 
Henn: Charles W. Hungerford.607-620 
Study of— 
Factors Affecting the Nitrogen Content of 
Wheat and of the Changes that Occur 
During the Devel<H>mentJof Wheat. George 
A. Olson. 939-954 
Rust Resistance in a Cross between Mar¬ 
quis and Kota Wheats: H. K. Hayes 
and O. S. Aamodt. 997-X012 
Study on the Effect of Changing the Absolute 
Reaction of Soils upon their Azotobacter 
Content: P. E. Gainey. 289-296 
Study of the Internal Browning of the Yellow 
Newtown Apple: A. J. Winkler. 165-184 
Sulphates, effect on plant growth in black 
alkali soils. 320-326,328 
Sulphur- 
effect on black alkali soil... 335 .336 
oxidation by microorganisms in black alkali 
soils. 297-305 
Sulphuric acid- 
effect on plant growth on black alkali soil. 320-328 
presence in soils, effect on Azotobacter con¬ 
tent. 294-396 
use in alkaline soil, studies...297,301 
com seed treatment for downy mildew.. 854-858 
Sunflower. Investigations: Ray E. Neidig 
and Robert S. Snyder..., —. 769-780 
Sunflower silage, composition tabl^ and dis¬ 
cussion. 771-776 
Sunflowers— 
composition, study.. 776-777 
cutting at different stages of maturity, 
results. 769.771-779 
distance apart in row, relation to yield and 
food value. 77 o. 777 . 779-7*0 
spacing, effect on composition... 770 - 777 .779-7*0 
Sure, Barnett, Read, J. W.; Nutritive Value 
of the Georgia Velvet Bean {Stizilobium 
deeringianum) .- ..^ 3 - 44 ° 
Sweden, oats stem rust, virulent form and 
abundance. *017 
Sweet Clover Investigations: Ray E. Neidig 
and Robert S. Snyder. 795"*oo 
Sweet potato— 
cultures, pectinase production, relation to 
acidity.^. 861-878 
decay, Rhizopus spp. causing. 441-456 
decoction, testing for pectinase produc¬ 
tion.. 864-*65»*7 o 
infection, experiments with “well” inocu¬ 
lation..—.441,445,456 
maceration, measurement in pectinase 
studies.865-869,871-872 
stem rot, Fusarium species causing, note .. 343 
Page 
Swingle. D. B., Morris. H. E., and Burke. 
Edmund: Injury to Foliage by Arsenical 
Spray Mixtures. 501-538 
Tangerine, Cleopatra, resistance to citms can¬ 
ker and scab, note. 957 
Taylor, G. S., and McGinnis, F. W.: The 
Effect of Respiration upon the Protein 
Percentage of '’^eat. Oats, and Barley 1041-1048 
Temperature- 
effect on Fusarium cultures.350.353 
growth of oats and of loose smut.'... 570-572 
internal browning of apples. 169-171 
spore germination of com smut. S93“597 
germination of oats smut.57*“58o, 580-585 
of insects, with special reference to honey¬ 
bee. 275-288 
relation to injury by arsenical sprays. 531 
relations of Eleven Species of Rhizopus: J. 
L. Weimer and E. E. Harter. 1-40 
Rhizopus spp. in rot of sweet potatoes. 443, 
44 S- 4 S 4 
to Rhizopus spp. 1-40 
soil, influence on Fusarium disease in cab¬ 
bage seedlings. SS“*6 
Thermoregulator, use in studies of Rhizopus 
spp*., description;. 443 
Thiobacillus spp., oxidation of sulphur in 
alkaline soils. 299-304 
Thomas, M. D., Harris, F. S., and Pittman, 
D. W.: Toxicity and Antagonism of 
Various Salts in the Soil. 3 * 7 - 33 * 
Tile, concrete— 
failure in peat soils, investigations.--- 47*-Soo 
testing in marsh waters of different com¬ 
position . studies..475-488.491 
Tiles, alkalinity testing. 477-4*® 
Timothy, stem rust, study of biologic form, 539-568 
Tisdale. William B.: Influence of Soil Tem¬ 
perature and Soil Moisture upon the 
Fusarium Disease of Cabbage Sellings .. 55-86 
Tobacco— 
extract— 
addition to arsenical sprays, effects. 522. S24‘'52S 
nicotine determination, improved 
method.... 961-970 
Tomatoes— 
injury by arsenical spraying. 512,5*4.5** 
washing with antiseptics to control watery- 
rot.^.903-904 
watery-rot, cause, description, and control 895-906 
Tomato-seed, press cake with com, feeding 
experiments..... 972-973 .976 
Toxicity and Antagonism of Various Alkali 
^Its in the Soil: F. S. Harris, M. D. 
Thomas, and D. W. Pittman. 3 * 7 - 33 * 
Transpiration, tests of conifers— . 106-130 
Traps, spore, use in upper air studies...... 599-605 
Trees— 
ecological studies, review.. 102-105 
Rocky Mountain, physiological require¬ 
ments. 97-164 
young, nutrition studies. 801-814 
Tsuga, rust occurrence, note. . . 893 
Turnip decoction, testing for pectinase pro¬ 
duction .. 864-865,870 
Ustilago — 
avenae, spore germination, temperature 
of. 577-597 
zeae, spore germination, temperature of.. 593-597 
Utah— , . , 
Cottonwood nursery, snow molding of 
coniferous seedlings.,— 741-748 
soils, sodium carbonate control experi¬ 
ments. 322-326 
Vegetables, susceptibility to arsenical poison¬ 
ing, differences. 5 **- 5*4 
Velvet bean. Georgia, nutritive value. —. 433-440 
grass, injury by Helminthosporium tri- 
septatum . 685-686 
Ventilation— 
apples, preventiem of internal browning, 
experiments. *76 
relation to transpiration of forest trees,.. 116-117 
Vitamines, velvet bean, in seed and leaf 433 . 438.439 
Volusia silt loam soil, manganese pot treat¬ 
ments of plants. 784-786 
