SMALL GRAINS OX ARLINGTON EXPERIMENT FARM 
11 
have proved to be unadapted. They are lacking in spring vigor and 
produce poorly filled heads. Preston, Power, and Haynes Blue- 
stem, hard red spring wheats sown in the fall, though seldom winter- 
killed are late in maturing and have yielded poorly. Red Eock, a 
variety developed at the Michigan Agricultural Experiment Station, 
has yielded more than any other bearded wheat and ranks second of 
all varieties in the 5-year period, 1919-1923, inclusive. 
Figure 2 shows graphically the average yields of six varieties of 
winter wheat in the 6-year period, 1918-1923, inclusive. Representa- 
tive heads of four varieties are shown in Figure 3. 
The varietal experiments begun in 1910 included 26 varieties of 
common wheat, 13 of which were awnless and 13 awned. Power, an 
awnless spring wheat, was grown in only one year and then discarded. 
After yield data had been obtained for four or more years, varieties 
of poor yielding ability usually were discarded. Six awnless and 
eight awned wheats were grown during the entire period from 1910 
to 1923, inclusive. Five of the six awnless wheats have higher 
average yields for the 14-year period than any of the awned varieties. 
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Fig. 2.— Diagram showing the average yields of six varieties of winter wheat grown at the 
Arlington Experiment Farm in the 6-year period, 191S-1923, inclusive 
The average acre yield of the six awnless varieties for this period was 
1.8 bushels higher than that of the six best awned varieties. The 
6-year average (1918-1923) permits a comparison between 13 awnless 
and 15 awned varieties and strains. Five of the six leading varieties 
are awnless, two of them being recent introductions into the varietal 
experiments. The average acre yield of the 10 highest yielding awned 
varieties from 1918 to 1923. inclusive, was 28.8 bushels, as compared 
with 29.7 bushels for the 10 highest yielding awnless varieties. 
Table 7 shows the average agronomic data recorded for 17 varieties 
of winter wheat grown during the 12-year period, 1912-1923, inclu- 
sive. The superior yield of the awnless varieties may be readily seen. 
Purplestraw (C. I. Xo .1915) and Fultz are very similar in their growth 
habit, both producing a high yield of grain and a, low yield of straw. 
Plats of Purplestraw and Red Rock wheats are shown in Figure -4. 
Purplestraw (C. I. Xo. 1957) grows taller than either Purplestraw 
(C. I. No. 1915) or Fultz and produces a higher ratio of straw to 
grain. The two strains of Poole wheat included, C. I. Xo. 1979 and 
Potomac (C. I. Xo. 1733), are somewhat similar in habit of growth 
and time of maturity. Both are of midheight and produce consid- 
erable straw as well as grain. 
