IMPROVEMENT OF KUBANKA DURUM WHEAT. 9 
TABLE 4.—Stem-rust infection recorded on the Kubanka wheat selections in the years dur- 
ing which rust occurred at these stations in North Dakota in the years stated. 
{T=Trace.]} 
Annual and average stem-rust infection (per cent). 
| 
Dickinson, N. Dak. 
Fargo, N. Dak. | Edge- 
variety. | Nursery. Piatss. 4 Nursery. | Plats. _| plats. 
| 
|—-- Sj} —| —_______-; 
erst on 8 alton Aver- i913 1919,1920|1921|1922| AVF! 1921/1922 AYET 1999 
Pee eRe (2s | age. | age. | || age. | < 
j stg) Loo fe eed le me) (ee |e est | eres | Pe 1 FD 
| med eae 
No.2 oad 9 a oe Dea Eee 30:4 50-1 — S|. FO 100-49 1S he oe Nace &, 
Se STE SEC ES )ieT Ls ey dal aM De 15s 40h = 521 -60.105.)), AS a icc pee eta: epee aay: 
ING wae a: PS; 138 ibe Bess eee Bl oS. eal os |” ALA zk. ona ieee acloe me oa 
No: 345. 2s 8|-5| 9 eek 12 9/101 10} 5| 40} 93| 32. 40} 851 631......2 
No.45._4 te /8).5/ 8 W105 | 104. 8-| 3.)16 | 5 |.304-95 | 30 i Ree es eS) 
No. 55.02. eS 5 Se hig ae eee 15s FO le1O 78.\ 2 22: | lees eccie lee ace 
Se eee pest 5 Belk dcootnee REIS AF het SEERA es § erm AAP a Pg Wee 
je 2 eee oars ao Bees Greets ee hee 10} 47/ 5|60/95| 431.... Sh ioe tie 
Barge lea 1} 8 Hoiegel | sae oe POH] FO bas | 6Ou Gon 40-|. cle. ease certs: 
WaiGa-. adel bel 14 Bo) 265) a1 307), TO) 5170) 40°F 95) 20). sortase lone 
S| ee RS Oley: 51 5110) * 81.10 |.184 5 | 60/95 | « 38, 35 |-901 °° 63]. 0 2... 
Cr Seaman pests 1 14-( 306 | 8 | Ee al ase: AOAC | A BOs|2O5f . 243+) Sea tet, Ack eee ae 
NG, 68 eo, fefay| 22) 1G Sees tlloas @ too eine Svs Vien $3"), 2Oesde 11 
tS eee ee eT bee fi 2 1 6 alee 1 EEL ston [Se |b en ctee colt eel ae, Sere 
Nea senda eT | Sooo tl rl) a) 68 517] Of] 65}. 23 B.) 21400) erat 13 
No: 99.5 62... [oe oer a Bat = 7 ACG ee eS laa 1.5] 5| 0] 14-18 64 = 22-15 9 12 
Non 4005 25% 22. 64-41-1143 Ae: ee PS ASA FO TS. |) (42 ls. | Stee ae eee 
Moz Wat 3| T | 10 lal ees bee ees (= Fae ero | AOR 5S AGH alah Ao ea ese 
Nai 52262 5. | Petit Pa ee aris. ol -seb se: PO Se eS-| GOs | 244 |e Ss eee a ae 
Nortigs 2k... fesse ks S431 4 451 51. 7-|-0 110 |/18 Bf 31°30! 2 k7sl 7 
Lie 6 7 ce maeees se ee a 24 ‘1]-3 Daas AS eos [ie [ee aes ae, eee rR aoeence 
Rebs oe =. - - Bae bis | vale | ret io | 27 | 5 |60 | 95 | 39155 | 85 | 70 |.2o ot. 
C. 1. No. 1440....|-.7| I-12 FL 7V Bal 6) 12-14E.| 8 | 50 1-95 | 44 1245.)°85. | 65 27 
Monad 3.2.4 |} 4) 7) 5 Sak sl as Be 2 et AV ee Ons ota 
I j j } | 
| 
| 
1 Average of 143 pure-line selections. 
STIFFNESS OF STRAW. 
Kubanka, like other varieties of durum wheat, grows tall and has 
heavy heads. Consequently, it has a tendency to lodge if rain 
and wind storms occur just before harvest. Lodging is especially 
likely to occur if the crop is sown on fallow or on unusually fertile 
land and when abundant moisture causes a rank growth of straw 
and well-filled heads. Under the conditions prevailing at Dickin- 
son, N. Dak., lodging has not often been a serious factor, and no per- 
centages were recorded, although some notes on lodging were taken. 
Considerable lodging occurred at Fargo in 1920 and 1922. Percent- 
ages of lodgimg were recorded on the Kubanka selections in the 
nursery in 1920 and in the plats in 1922. The results show Nodak 
to be slightly weak in straw, ranking about the same in that respect 
as Monad and slightly better than Acme. Selection No. 99 has a 
medium strength of straw, being a little stiffer than Monad and 
Acme. Selections Nos. 63, 74, and 133 have comparatively stiff 
straw. 
SEMOLINA QUALITIES. 
As a large part of the durum wheat grown in this country is made 
into semolina for the production of macaroni and other edible pastes, 
the varieties of this wheat which are grown should possess the quali- 
ties demanded by that industry in addition to those already men- 
tioned. The semolina industry demands a durum wheat which 
