14 BULLETIN 1046, U. S. DEPARTMENT OF AGRICULTURE. _ : 
=e Sa 
TABLE 2.—Stem-rust infection on susceptible and resistant varieties of wheat grown in the 
rust nursery at Manhattan, Kans., in 1916 and 1917. 
1916. 
Identification. 
: Rust in- 
Pl. vi, | Pedigree or, wane: SSS: : fection. 
fig. 1. | other : 
“| number. | 
6 Per cent. 
Ars eek Eo Sle) rata eas aie us BNA ao) Soe Rae Be mM ce Hard red winter..::.-.....-222.2..:-.- 65 
peers PSD es cies c= Semen ae ie i Ne SA gear ee etl Re GOSS as see See ee eet 40 
Cask IBUWob ener Kanne ds erao ses eas es aoe ae COs saws See eee nate eee 10 
1 Dee TT sot os ee rea ns Wage a aa ase sca ae acm en ally Poy C0 Ro eee pe ee ees ere Na eS ee le 45 
1D pes Rei tap d Bap Pane ets eae aN it Rela ee RA a Mane eal SE CONS Se ane ee ey 50 
Biases 2 DE (aie tane iter cert reat an SU ore rg Spe AIR, SS ele 6 Yo RSS Hien amine erent SME Sa 55 
eae PMQBS 2 ae | UA aa iors ES crag ars a a A NO rs ate eC) Cerin res ener eee ap sr oe ee 85 
HB Gee eve al OGAR As = [Saar ale Danaea ec x hn air aeate attra aE Ss Loin Rees GOSS a 5 ee eae ee ge 60 
ihe as 1 EeA 1S) Sheps oer ge see pce pa ee eh Si Sue oa le oe WO. oe eas eee a eg 5 
ieee TRAN afeSe ess es ei ear ace Dieta ae ea ee rire AZ, eet (0 Co erate ect ic | Somme an rey ae Ae 5 
ee PIO? Uae, Ee Sect ee coe eal Ses Sues ere neg ee ae 45 
eae PAQISE eee eS rae Beet array ge erred as a SNCs 6 Cott endl ar pa W0s esis Beene ee Sa eee 50 
Mi IRM Rissesc SS oe ee eee emesis Me heals ol We Go sseres eee ee ree 77 
NSS Check..... [est UTR rte eee ore yan teec sere apy oe pcoep cae |p GOs eects eee Sor 45 
(Oe ae eC sdleel SE (cele Gun irkca ee ee San eer ere ifardired S prin oases eee 50 
pee tae C3822) Deore same dnc Scene soe eee eee Red durum 5.255 oten. Saas al eee 
Or. PQ ees | essence iereisruin eo Sree Us Seas auth mI eS Hard urediwittenesccua. concn tect er eee 30 
Ieee Les ee Micall yi eo eerie es emiaceteg, UN epee Ses Softred: wititern2% 2:2. een wee 85 
1917 
| 
(Neve seen 7S yak es eile a neem apeee a8 pase a Samana paae batiordiredawinter sss .0) see eee ae | 95 
Bie cen: PTO eee ie ie aa iran a ve Ona cs a ie aap eseiee CORP ree Se ee ee eee | 70 
Cee IVs ae Kianred 2 nine i hits oc game bya lesen dO vais Eee eens aoc ee ae | Trace 
1B rte LE On ya Nese lg SN STNG ste e Ue  amaai  rhclat ae eee GOs oS Nat ce See ese | 
Rye ee LEAST Wosea eames el eee ah Te Den id ia en lee COs SEC Ae ene 70 
He eke WPA O38 S52 B Be ohn Sats cits. Org i cnegan ey crt eee ene GOs aS as eo conte Se 85 
Giss ROG Aor Soe PRA Abe Soe ee Nae ee | cer COs heel Sacre Un ace ee | 70 
13 beanie PROG Sees sl ceo aie etc ee are re re eae C0 Vc gaa MENG ce eee ee me A 5 
1 bre eee J EO ova Geers emi See ae recess Man ye ealenr | Aa GOsi sesh ayo ee Se eee 5 
deacon Plas a Pcie Mie aeiiaiene ie ney ees creraee ie Norte aes [ise ee a oa pe Ses ric rem ic Noo 85 
Nee ee Keans#20483 | cAlbentasedees 2c ee se renee eee. GO se oS oR seca bse 88 
boa Minn: 169:.| Haynes Bluestem. _..../...1./..| Hard red spring... 2.) 7 85 
Misictiee (CRIB ieliel <Ghlopinlic wees So ann cele | Duran se Sere os aera cree | 10 
Ne poe BD Mee ee lee Pee Oe oer kee ems em meta rete ames | Hard rediwintert: 22 eae ee | 40 
Ona Ode 3077. eR cores eee | SOft-red winter cee stoosc ee ee | 95 
GREENHOUSE EXPERIMENTS. 
To check the nursery results similar experiments under controlled 
conditions were conducted in the greenhouse. 
INOCULATION METHODS. 
Nearly all the varieties, both winter and spring, which were used 
in the field were inoculated in the seedling and heading stages in the 
greenhouse. Careful records of the inoculated plants of each variety 
have been kept and their behavior compared with the behavior of 
the same variety in the field. The number of plants which can be 
grown under greenhouse conditions is more or less limited, and for 
this reason conclusions from such experiments should always be 
drawn with caution. 3 | 
INOCULATION OF SEEDLINGS. 
In inoculating seedlings the first leaf was inoculated and all others 
were trimmed off. The uredinial material came from stock cultures 
grown on Improved Turkey (Kansas No. 2382), or some other sus- 
