CRATTs^ SORGHUMS TN THE TF.XAS PANHANDLE. 
39 
Feterita made the high yield from home-grown seed in only one 
year; from seed grown at the Arlington Experimental Farm, Va., in 
three years; and from seed grown at Chico, Calif., in one year. In 
the 3-year average yield, plats from Chico seed take first place and 
from the home-grown seed third place. In the 5-year average yield 
the plat from home-grown seed is lowest. 
Dawn kafir produced less favorable results from home-grown seed 
than either of the other varieties. It made the best yield each year 
from seed grown elsewhere. The crop grown from Arlington seed 
leads in both the 3-year and the 5-year periods. 
These data tend to show that the source of the seed has little influ- 
ence on the yield of the resulting crop when grown at the Amarillo 
Cereal Field Station. 
CHEMICAL COMPOSITION. 
Samples of the grain produced in the environmental experiments 
with Dwarf milo, feterita, and Dawn kafir were analyzed by the Plant 
Chemical Laboratory of the Bureau of Chemistry. The percentages 
of water, ash, protein, fat, and fiber were determined, as were the 
weight of 1,000 kernels and the weight per bushel. Seed grown at 
Chico, Calif., was not available for sowing at any of the three stations 
in 1915, while the crop at Chico in 1917 was a total failure, except 
that enough seed was produced for resowing there in 1918. Analyses 
are presented from seed grown at the Arlington Experimental Farm, 
Rosslyn, Va., and at the Cereal Field Station, Amarillo, Tex., from 
Arlington and Amarillo seed in each of the five years, and at these 
two stations from Chico seed in 1916, 1917, and 1919. The figures 
on crops grown at Chico from Arlington and Amarillo seed are for 
1915, 1916, 1918, and 1919, and from Chico seed in 1916, 1918, and 
1919 only. These data are shown in Table XXII. 
In Table XXII the chemical data on environmental experiments 
are summarized, the data being combined in two ways. The average 
data shown are first combined by stations at which the crop was 
grown and then by sources from which the seed was obtained. Thus 
the average figures on Dwarf milo are given for all the crops grown 
at the Arlington Experimental Farm, Va., from all three sources, 
then those grown at Amarillo, Tex., and then those grown at Chico, 
Calif. Following these, averages are given for all the crops grown 
at the three stations from seed produced at Arlington, at Amarillo, 
and at Chico. Similar data are given for feterita and Dawn kafir. 
