THE SOY BEAN FOR OIL AND OTHER PRODUCTS. 
17 
Environment has been found to be a potent factor in the percentage 
of oil in the same variety. 1 Considerable differences occur in oil 
content when soy beans are grown in different localities. The Haber- 
landt variety grown in Mississippi, North Carolina, Missouri, Virginia, 
and Ohio gave the following percentages of oil, respectively: 25.4, 
22.8, 19.8, 18.3, and 17.5; while the Mammoth Yellow variety 
grown in Alabama, South Carolina, Tennessee, North Carolina, and 
Virginia gave, respectively, 21.2, 19.6, 19.5, 18.4, and 18.8. Variety 
tests conducted in various parts of the country indicate a higher per- 
centage of oil with the same variety for southern-grown seed. Similar 
results have been obtained in Manchuria, the North Manchurian 
beans showing an oil content of 15 to 17 per cent and the South Man- 
churian beans from 18 to 20 per cent. 
The soy bean lends itself readily to improvement by breeding, and 
experiments indicate the possibility of securing varieties of high oil 
content by selection. Individual plant selections from a Manchu- 
rian variety grown at Arlington Farm, Va., varied from 20.2 to 
25.5 per cent in oil content. Analyses of a large number of plant 
selections from the Mammoth Yellow variety, grown under identical 
conditions in the same field, showed variations in oil content from 
18.1 to 20.4 per cent. It is apparent that there is considerable 
variation in oil content of the same variety, and an opportunity is 
offered for developing strains of high oil content. (Table X.) 
Table X. — Analyses for 'protein and oil of important varieties of soy beans grown at 
Arlington Farm, Va., Newark, Del., and Agricultural College, Miss. 
Fat. 
Protein. 
Variety. 
Virginia. 2 
Delaware. 3 
Missis- 
sippi. 3 
Virginia. 2 
Delaware. 3 
Missis- 
sippi. 4 
Mammoth 
Per cent. 
18.6 
16.8 
19.2 
18.3 
19.3 
16.6 
17.6 
18.4 
19.1 
19.5 
17.8 
18.4 
15.9 
18.4 
Per cent. 
Per cent. 
18.6 
18.5 
Per cent. 
37.6 
40.0 
37.2 
38.5 
34.1 
40.3 
46.9 
35.0 
34.5 
36.8 
40.8 
35.6 
39.0 
37.8 
Per cent. 
Per cent. 
41.4 
Hollybrook 
16.8 
40.0 
39.0 
Manchu 
Haberlandt 
18.7 
17.6 
16.9 
38.2 
40.0 
40.5 
Medium Yellow 
I7.T 
39 6 
Chiquita 
Tokyo 
20.7 
38.1 
Lexington 
17.3 
39.1 
Guelph 
20.2 
40.3 
Black Eyebrow 
Shanghai 
18.5 
16.4 
17.5 
20.3 
15.7 
17.9 
41.4 
Peking 
17.2 
18.8 
36.4 
37.0 
40 1 
Wilson 
39.3 
46 3 
Biloxi 
Barchet 
11.8 
17.8 
45.9 
40.2 
41.0 
Virginia 
40.6 
1 Garner, W. W., Allard, H. A., and Foubert, C L. Oil content of seeds as affected by the nutrition 
of the plant. In Jour. Agr. Research, v. 3, no. 3, p. 227-249. 1914. 
2 Analyses made by Mr. H. A. Piper, Bureau of Chemistry. 
,3 Grantham, A. E. Soybeans. Del. Agr. Exp. Sta. Bui. 96. 39p.,illus. 1912. 
4 Robert, J. C Preliminary report on the economic value of the soy bean, p. 4, tab. 1. Miss. Agr. 
Coll., 1915. 
