154 
BULLETII>r 1334^ U. S. DEPAETMENT OF AGEICULTUEE 
varieties are humid-area spring sorts, and when fall sown or winter so^^ti they 
produce an excessive growth, thus making their chances of winterkilling much 
greater. This was the cause of the very low yields in 1916. 
The varieties tested in 1920 and 1921 with the exception of Coast were all winter 
sorts. Tennessee Winter (C. I. No. 257) far exceeded all others with an average 
yield of 74.5 bushels, as compared with 58.5 bushels for O. A. C. Selection 7 
(C. I. No. 2814), its nearest competitor. Coast (C. I. No. 690) was third in 
rank. In 1913, however, the two Coast barleys, Telli and Coast, were the 
lowest yielding sorts. 
Barley as an agricultural crop in New Mexico is of only minor importance. 
It is grown largely for winter pasturage. Although Tennessee Winter was not 
sufficiently tested at this station to determine its relative importance, it is both 
high yielding and winter hardy and is probably unequaled for the purpose for 
which barley is usually grown in this State. For this reason State College is 
considered with the stations in the winter-barley region, although ecologically 
it belongs in the Coast region. 
Table 93. — Annual acre yields of varieties of barley grown at the New Mexico 
Agricultural Experiment Station (at State College) in one or more of the nine 
years from 1913 to 1921, inclusive 
[Data obtained through the courtesy of the New Mexico Agricultural Experiment Station] 
Variety 
r.i. 
No. 
Acre yields Q)ushels) 
Years 
grown 
Aver- 
age 
yield 
(bus.) 
Percent- 
age of 
1913 
1916 
1917 
1920 
1921 
weighted 
mean 
Frankish . . ... ..- . 
207 
690 
2811 
208 
848 
2812 
194 
518 
754 
51.1 
28.1 
61.6 
43.1 
59.9 
29.7 
21.5 
9.5 
40.4 
3 
3 
3 
1 
3 
3 
1 
2 
1 
2 
2 
2 
2 
33.7 
46.8 
32.3 
43.1 
34.3 
19.7 
21.5 
48.9 
14.6 
44.3 
74.5 
51. 6 
58.5 
111 6 
Coast 
55.6 
56.6 
95 1 
Six-Row 
9. 7 25. 7 
107 
102 4 
Scotch 
8. 3 34. 6 
6. 9 22. 5 
113 6 
Hull-less - -- - 
65 2 
Telli 
51 1 
j 
51.6 
14.6 
51.5 
83.1 
61.5 
66.0 
46.2 
■"37."i' 
66.0 
47.7 
51.1 
92 3 
Nakano Wase (See PI. Ill, 
fig 1, D) 
26 6 
519 
257 
2S1S 
83 6 
Tennessee Winter 
140 6 
0. A. C. Selections 
103 
0. A. C. Selection? 1 2SU 
110 4 
REGIONAL ADAPTATION OF VARIETIES 
In order to make tlie discussion of results at each station fairly 
complete, statements of tlie adaptation of Yarieties and types have 
been repeated tbrougliout the bulletin. When the results of all the 
stations are brought together they should enable one to map the 
various regions of barley culture. There are many difficulties, 
however, in mapping. The boundary lines are intangible and fluc- 
tuate from year to year according to the season. The data available 
are often fragmentary or for so few years as to be inadequate. The 
boundaries themselves do not separate the regions of adaptation 
of one type from that of another. There are lines where two well- 
adapted t3^pes are equal in value and on each side of which either pro- 
duces good yields. Often types of probable high yield have not been 
tested or have been inadequately tested. It is possible that in many 
cases the most desirable sorts have never been introduced into America. 
For these reasons the history of barley cultivation and of varieties is 
a very desirable background for defining present limits. 
The regions are most easily separated on a basis of rainfall and 
temperature. In States east of the Rocky Mountains rains occur 
during the growing season. In tiiis district of smnmer rainfall there 
