‘HARD RED WINTER WHEATS IN DRY AREAS 33 
The varieties were grown on fallow and in three systematically 
distributed plats. The average yield for the standard Kharkof was 
9.5 bushels per acre. During the same 4-year period Kanred and 
Turkey (C. I. No. 6175) exceeded it by 0.8 bushel per acre, a differ- 
ence which is not significant. During the 2-year period, 1920 and 
1921, Montana No. 36, a selection of Kharkof, proved the most 
promising of any of the varieties tested. 
SUMMARY OF YIELDS 
In order to compare the yields of varieties at all of the 15 stations, 
the average yields of each variety, as expressed in percentages of the 
yield of the Kharkof variety during the same years at each station, 
are given in Table 18. A diagram showing the location of the 15 
field stations is shown in Figure 1. The Kharkof variety has been 
included in all of the experiments. Other varieties have been grown 
during only a part of these years. 
Table 18 shows that Alberta Red, C. I. No. 2979, slightly out- 
yielded Kharkof at 6 of the 8 stations where it has been tested. 
Argentine, C. 1. 1569, slightly exceeded Kharkof at all three stations 
where compared. Beloglina, C. I. No. 1543, equaled or exceeded 
Kharkof at 3 out of 9 stations. Blackhull exceeded Kharkof at 2 
out of 5stations and Kanred at 6 out of 9 stations. Kanred exceeded 
Kharkof more often and by a greater amount than any other variety. 
Karmont exceeded Kharkof at the two stations where they have 
been compared. This is a selection of Kharkof, C. I. No. 1583, 
which strain has exceeded the standard Kharkof, C. I. No. 1442, at 
3 of the 7 stations where both were grown. Two other strains of 
Kharkof, i. e., Montana No. 36 and “ Hays No. 2,” also have yielded 
well, exceeding the standard, at least at one station. 
The strains P-1066 and P—1068, which are very similar to Kanred, 
exceeded Kharkof at the Hays, Kans., station, where they were com- 
pared. Of the several strains of Turkey tested, C. I. No. 1571 in 
general has proved the best yielder, having exceeded Kharkof at 4 
out of 10 stations. 
The yields of most varieties and strains of hard red winter wheat 
have been very similar, and with the exception of Kanred few can 
be said definitely to be significantly better than the others. There 
are some, however, which have been found significantly poorer in 
ield than the standard Kharkof or the better strains previously 
isted. Very few varieties of soft red winter or white winter wheat 
have outyielded the leading hard red winter varieties in the dry-land 
areas covered by these investigations. 
DAYS FROM EMERGENCE TO MATURITY 
Notes on the dates of emergence and maturity of the varieties of 
wheat have been recorded each year at most of the field stations. 
The ripening of wheat in the Great Plains and Great Basin areas 
occurs prematurely in most of the seasons, owing to drought or hot 
winds. In moderately unfavorable seasons the period from emerg- 
ence to maturity is shorter and the difference in the time of matur- 
ity between early and late varieties is less than for the same varieties 
in a normal ripening season, such as usually occurs in the subhumid 
