GRAIN SORGHUMS IN THE TEXAS 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. 



