BULLETIN 1046, U, S. DEPARTMENT OF AGRICULTURE. 



RESULTS OF THE NURSERY EXPERIMENTS. 



The percentage of stem rust found on the varieties grown in 1915^ 

 1916, and 1917 and the 3-year average for all varieties grown in all 

 three seasons are shown in Table 1. Notes on the quality of grain 

 also are given for the years 1916 and 1917. 



The varieties are arranged according to type and are grouped as 

 to the characters, winter or spring, awned or awnless, glabrous or 

 pubescent glumes, and soft or semihard to hard kernel. All of the 

 winter-wheat varieties with the exception of Binkel Club are common 

 wheats (Triticum vulgare). The spring grains include varieties of 

 common wheat, as well as durum wheat (T. durum), emmer {T. 

 dicoccum), and einkorn (T. monococcum) . 



The ''Identification numbers" include the 'Tedigree number," 

 as used by Prof. H. F. Roberts; the "Kansas number," which is an 

 accession number assigned by the department of agronomy; and 

 the C. I. number, used by the Office of Cereal Investigations of the 

 Bureau of Plant Industry. 



Table 1. — Stem-rust infection of wheat varieties after artificial inoculation in the nursery 

 at Manhattan, Kans., in the years 1915, 1916, and 1917, together ivith data on kernel 

 quality in 1916 and 1917. 



[Key to Symbols. — Identification numbers (columns 1 and 3): C. I.=Cereal Investigations, H= hybrid, 

 K= Kansas, P=pedigree. Rust infection (columns 5 to 7): T=trace, AVk= winterkilled. Quality of 

 kernels (columns 9 and 10): E=excellent, F=Mr, F— =poor to fair, F+=a grade better than fair, r±= 

 variable quaUty (some poor to fair, some fair to good), G=gcod, G— = a grade poorer than good, G+ = 

 a grade better than good, G± = variable quality (some fair to good, some good to excellent), P=poor, Vp= 

 very poor.] 



Growp /.—Awned, Glumes Glabrous, Kernel Semihard to Hard. 



Season, class, and iden- 

 tification number. 



Kansas 

 No. 



C.I. 

 No. 



Varietal name. 



Stem-rust infection (per cent). 



Quality of 

 kernels. 



1915 



1916 



1917 



3-year 

 aver- 

 age. 



1916 



1917 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



WINTER VARIETIES. 



Common wheats: 

 P647 



2356 

 2357 

 2368 

 2370 

 2376 

 2382 



2383 

 2385 

 2386 

 2388 

 2390 

 2391 

 2.398 

 2399 





Japan 



Per. 

 cent. 



40 



25 



25 



50 



50 



50 



45 

 25 

 40 

 25 

 ■ 40 

 35+ 

 40+ 

 45 

 65 

 65 

 65+ 

 40 

 35 

 25 

 25+ 



Per 

 cent. 



55 



68 



70 



75- 



60 



57+ 



47 



52 



32 



45 



30 



42 



65 



60 



48 



54 



42 



38 



45+ 



85 



47 



Per 

 cent. 

 Wk 

 Wk 

 Wk 

 Wk 

 88 

 58 



Wk 

 95 

 80 

 95- 

 Tto40 

 95 

 98 



Wk 

 90+ 

 65 

 78 

 95 

 90 

 97 

 85 



Per 

 cent. 



""■"66"' 

 55 



""57.'3" 

 50.6 

 55 

 35 

 57.3 

 67.6 



""'67."6' 

 61.3 

 61.6 

 57.6 

 56.6 

 52.6 

 52 



F-t- 

 F+ 



r± 



F 



F+ 

 P 



G± 





P651.. . 



Russian 





P675 



Red Winter Java 

 do 





P678 





P693.... 



1665 

 5592 





F- 



P706 



Improved Tur- 

 key. 

 Red Winter Java 



P 



P707 





P711 



G± i F- 



P712 







G ! F- 



P717 



1437 



Crimean 



F+ \ G 



P721 



G ! G 



P722 







G- I F- 



P732 







F ; F 



P733 







F- 1 



P736 







G P 



P737 









F- F- 



P742 



2434 



1538 



Ulta 



F- P 



P744 





P F 



P745 



2433 



1539 



Torgova 



F- ' F 



P746 





F P 



P750 



2411 



1543 



Beloglina 



F- , P 



