= ss | — = —— 
46 BULLETIN 1276, U. S. DEPARTMENT OF AGRICULTURE 
The loaf volume is a good measure of the expansion or strength of 
the dough, the quantity and quality of gluten, and the resulting tex- 
ture and lightness of the bread. The average volumes of loaves of 
bread baked from flour of 14 varieties of hard red winter wheat are 
shown in Table 26. 
The average loaf volume of 54 samples of Kharkof was 2,052 cubic ° 
centimeters. Most of the other varieties of hard red winter wheat 
produced loaves having about the same volume as that of Kharkof. 
Alton, Blackhull, Kanred, Karmont, Montana No. 36, and Nebraska 
No. 60 all produced loaves of slightly lower volume, while Beloglina 
and Minturki produced distinctly larger loaves. 
TABLE 26.—Average volume of loaves of bread made from 14 varieties and strains 
of hard red winter wheat grown at 14 experiment stations in the Great Plains and 
Great Basin areas during three or more of the eight years from 1915 to 1922, 
inclusive, compared with that of the Kharkof variety in the same station years 
[Data obtained in cooperation with the Milling Investigations Section, Grain Division, Bureau of Agricul- 
tural Economics] 
Loaf volume (cubic centimeters) 
: Station = 
Class and i ah. i 
nd variety C.I.N years scp Kharkof, Difference 
y same 
named ark 
y Less Greater 
Tek EGY of NS Bei Sana ewe Wee a cen Bie ieee aaa 5797 5 2, 008 19320]: as ee eee 76 
PREG OTe ae creeps a Est 1438 8 1, 953 1, 989 1 oyu [ee oes 2 
IBelogling esses S22 oe Gere) Sh eee ee 1543 3 2, 443 2: 2050 ee eee 240 
Black y: es ee lege ES, ee 6251 13 1, 931 1, 982 5 Met eee Se 
TEEN CHE Igoe pacts sce, SEN SL Ce ee NRT SS G8 5146 25 1, 990 2, 039 AG) oa eee 
KARIM ONGE eee a eae eee ame 6700 11 1,970 1, 997 PA bial Rk ese ae 
na EK Of ee a ae re 1442 54 QOD 2 a5 4 ee Se ee er 
1D Xo vsee re nem Uae 5 pe 2 Yee oper jah fe eaeieepas © 1583 3 2, 013 2 O03 sear 10 
Kaharkot (Hays.No.2)o ss = 3 ee 6686 3 2, 000 LS OSs se ee 27 
VEN tur kdl sees ee ie 6155 9 2, 246 25 0133| Serene 233 
MiontanaiNonco-. 2 sae ee eee 5549 6 1, 875 1,918 43° Meese ree 
Nebraska Now60222: S43). 3 Ses 6250 4 1, 935 1, 973 38: jester ee 
PRUnKCYj3a-2 ose ol SE es 1 a 1558 8 2, 071 2, 078 7. lasers 
BUS) 8 So Ss oe ce gg aaa es 1571 7 1, 959 1 Qb3);|- se eee ee 6 
1 Bo ene US 2 Re pepe Svc |X SEES oer Ser keen fer 3689 3 2, 205 231'50G| oan 55 
SUMMARY OF RESULTS 
The normal or average annual precipitation at 10 field stations in 
the Great Plains has been between 14 and 23 inches and at 5 field 
stations in the Great Basin area between 7 and 14 inches. Drought, 
winterkilling, or disease have occurred in several of the years, fre- 
quently causing loss of the crop or early ripening and poor quality 
of the wheat. 
Yields and other important agronomic data, such as height of 
lant, time of maturity, stem-rust infection, and test weight per 
pushel, are presented for no less than 110 varieties and strains of 
winter wheat which have been.grown in plats. Samples of the more 
important varieties have been milled and bread baked from the flour. 
hree classes of winter wheat have been grown and compared— 
hard red winter, soft red winter, and white, including common and 
club. The hard red winter wheats have consistently outyielded the 
other classes of winter wheat. About 85 varieties and strains of 
hard red winter wheat have been tested. 
q 
: 
