240 



Journal of Agricultural Research 



Vol. Ill, No. 3 



Table IX. — Oil content of soy beans grown under different environmental conditions 



Variety and locality. 



Hansen (S. P. I. No. 20409) : 



Wooster, Ohio 



Statesville, N. C 



Pullman, Wash 



La Fayette, Ind 



Auburn, Ala 



Kingston . R. I 



Buckshot (S. P. I. No. 17251) 



Wooster, Ohio 



Pullman, Wash 



La Fayette, Ind 



Auburn, Ala 



Kingston, R. I 



Guelph(S. P. I. No. 17261): 



Wooster, Ohio 



Statesville, N. C 



La Fayette. Ind 



Auburn, Ala 



Kingston, R. I 



Ogemaw (S. P. I. No. 17258): 



Wooster, Ohio 



Statesville, N. C 



PuUraau, Wash 



La Fayette, Ind 



Aubiuii, Ala 



Kingston, R. I 



Weight of 

 1,000 beans. 



Gm. 

 SC- 

 ,S9- 

 72- 

 SO- 



64- 5 



251- 

 156. 

 334- 

 250. 



347- 



164. o 

 269. o 

 190.9 

 182.4 

 196. I 



207.4 

 193-5 

 137-8 

 249.6 



233-3 

 235-6 



Moisture in 

 kernels. 



Per c.€nt. 



5- IS 



5-1° 

 5-95 

 5-15 



6. 40 

 - 6.05 



5-85 

 5.80 

 6. 10 



5-75 



S- 70 



5.82 

 6. 12 

 5-32 

 5-9° 

 5.00 



Oil in 



kernels. 



Per cent. 



11. 90 

 12.95 



12. 25 



11. 05 

 12.38 



12. 00 

 16. 40 



14-55 

 13- 25 

 20. 60 



16. 20 

 20.05 

 18. 40 

 20. 90 

 17-65 



16.45 

 17-05 

 14.40 



13-70 

 19-25 



17. 00 



Oil in 

 I, coo beans. 



6.0 

 6.6 

 4.8 

 8.0 

 6-3 

 7-7 



41. 2 

 22. 7 



44-3 

 SI. 6 

 62.6 



26.6 

 53-9 

 35-1 

 38.1 

 34-6 



34-1 

 33-0 

 19.8 



34-3 

 44-9 

 40. o 



In some cases there are differences of more than 100 per cent in the 

 size of the seed, and also very large differences in the percentage of 

 oil, when soy beans are grown in different localities. It is e\'ident 

 that environment, as well as heredity, may affect tremendously the 

 size of the seed and the quantity of oil stoied therein. It should be 

 noted again, however, that the behavior of the four varieties of soy 

 beans was by no means the same when grown in different localities. 

 There seems to be one exception to this observation-^-namely, that 

 the conditions at Pullman, Wash., were such as to produce in each 

 case abnormally small seed. 



As cotton does not thrive in a cool climate, it has not been practi- 

 cable to study the development of oil in the seed under such a wide 

 range of conditions as in the case of soy beans. It can not be stated, 

 therefore, whether the quantitiy of oil stored in the seed is subject to 

 as wide fluctuations as have been noted in soy beans. By reference 

 to Table VIII it will be seen that in a 3-^year test all of the six vari- 

 eties of cotton produced considerably heavier seed, containing a decid- 

 edly lower percentage of oil, when grown in the Piedmont section of 

 northern Georgia than when grown in the Coastal Plain region of 

 South Carolina. The increase in size of seed in northern Georgia was 

 not entirely offset by the decrease in percentage of oil, so that the 



