38 
BULLETIN 1260, U. S. DEPARTMENT OF AGRICULTURE. 
Table 7. — Average yields of forage and seed of the miscellaneous varieties of sor- 
ghum grown at Amarillo, Tex., each variety being compared with a check during 
the 5-year period from 1913 to 1917, inclusive. 
Varietv. 
Serial Xo. 
Years 
under 
test. 
Variety used 
as a check. 
Forage 
Tons 
per acre. 
Sorgos: 
Dwarf Amber. 
Whooper 
Collier 
Colman 
Straight- 
neck. 
Johnson grass X 
sorgo. 
Grain sorghums: 
White kafir 
Early White milo. 
F. C. I. 6586. 
F. C. I. 5873. 
S. P. I. 21807. 
S. P. I. 34986. 
F. C. I. 02224. 
F. C. I. 5849. 
S. P. I. 19695. 
F. C. I. 5885.. 
Dwarf hegari j S. P. I. 34911. 
Brown kaoliang-.] S. P. I. 38088. 
Freed sorghum... S. P. I. 29166. 
A cuff sorghum.... F. C. I. 1615- 
I 
1914 to 
1917. 
1916 and 
1917. 
1914 and 
1915 
1913 and 
1914. 
1915 to 
1917. 
1915 to 
1917. 
1913 and 
1914. 
1914, 1916, 
and 
1917. 
1913 to 
1916. 
1916 and 
1917. 
1913 and 
1914. 
1916 and 
1917. 
Black Amber.. 
do 
do 
do 
.—.do 
do 
Dawn kafir 
do 
do 
do 
....do 1... 
.-..do 
1.83 
1.03 
3.98 
3.12 
4.26 
3.21 
1.80 
1.09 
2.84 
1.88 
3. 80 
1.74 
2.90 
2.90 
Sei ) yi&i.ds 
Bushels 
per acre. 
— M 
DC! 
64 21. 4 
o. J 
105 28. 3 
179 
147 
1.3 
12.4 
in 21.3 
25.3 
14.3 
36.3 
13.7 
26.8 
26.8 
1.43 I 12G 
2. 00 5o 
1.4 10.3 
8.8 12.4 
1.80 2.27 79 16.7 22.8 
.62 1.79 ! 35 4.5 8.3 
1.37 1.43 ' 96 9.0 10.3 
1.47 1.79 v2 2.2 8.3 
Feterita (F. C. I. No. 811), the variety which made the largest 
grain yield at Chillieothe, Tex., was second to Dwarf milo at Amarillo, 
although it outyi elded the latter variety every year except 1915, when 
climatic conditions were unusually favorable. In 1913 under very 
unfavorable climatic conditions feterita w r as the only grain sorghum 
to make a measurable yield of seed. It would appear, therefore, that 
of the two varieties Dwarf milo has the ability to respond more 
effectively to favorable conditions, while feterita is more likely to 
produce a crop in dry years. 
WOODWARD, OKLA.s 
Weather records show that the rainfall at Woodward is somewhat 
heavier than at Amarillo, Tex. The normal seasonal rainfall, how- 
ever, is not very different. During the period from 1915 to 1921, 
however, the average seasonal rainfall was more than 1.5 inches above 
the normal, although in some years this rainfall was not well dis- 
tributed. (See Table 1.) In 1916, for example, more than 10 of the 
17 inches of rain received during the growing season fell in June, the 
other months being exceptionally dry. Another poor season, 
especially for grain, was 1918, when the rainfall was deficient in the 
latter part of the growing season. 
The field station at Woodward is 1,900 feet above sea level and 
located in the heart of the sorghum belt. The climate is well suited 
'< The sorghum experiments al Woodward and Law ion, Okla., Dalharl and Big Spi ing, Tex., and Tucum- 
cari, N . Mex.\ are all conducted under a cooperative agreemenl with the ( ifflce ol Dry-Land Agriculture of 
the Bureau of Plant Industry, The cooperative agreemenl covering the tests oi grain-sorghum varieties at 
these stations is between the Office of Cereal [nvestigations and the Office ol Dry-Land Agriculture. 
Through the courtesy of the former office the records of these grain sorghums ari included, in order that 
i hej may be compared w itb t he sorgos as to I heir forme value. 
