1052 
Journal of Agricultural Research 
Vol. XXXI, No. 11 
DISCUSSION 
Throughout all the various phases of these investigations the 
economic importance of grading sweet-corn seed for canning purposes 
was kept in mind. Each experiment demonstrates the difference in 
rate of growth and time of maturity between the plants from large 
and small kernels. The stalks from large seed have in all eases been 
more rapid in growth and more even in maturity than those from 
small seed. They have also been more resistant to adverse weather 
conditions and have produced larger yields. For the sake of greater 
uniformity in date of maturity, it would seem wise to plant the large 
and small kernels in separate parts of the field, so that the grain may 
be harvested when it has reached the proper stage without the 
necessity of picking the whole field twice. 
SUMMARY 
The large and small kernels of sweet corn germinate and the 
seedlings come up at about the same time. There is a slight variation 
in each type, but one has no distinct advantage over the other. 
The seedlings from the large kernels are nearly always larger than 
those from the small ones, and usually remain so. This difference is 
apparent from the earliest stages. 
The large seedlings grow more rapidly and become established in 
the soil more quickly than the small ones. Consequently, they pass 
from one stage of development to another in advance of those from 
the small kernels. 
Plants from large kernels reach the tasseling, pollen-shedding, 
full-silk, and canning stages about five days before those from smsdl 
kernels. Hence, large seed within a variety tends to produce early 
maturity and greater uniformity. 
Sweet corn for canning purposes should be graded. The large and 
small kernels should be planted separately. 
No difference was found in the size of kernels produced on the 
ears from large seed and those from small. 
There was a larger number of two-eared stalks among those from 
the large kernels than from the small ones. . 
More barren and unproductive stalks were found in the plot 
planted with small kernels than in that planted with large ones. 
LITERATURE CITED 
(1) * Clark/Y. A. 
1904. SEED SELECTION ACCORDING TO SPECIFIC GRAVITY. N. Y. State 
Agr. Exp. Sta. Bui. 256: 367-425, illus. 
(2) Degrtjlly, L. 
1898. SELECTION DES BLES ET AUTRES SEMENCES PAR LA DENSITY. 
Prog. Agr. et Vit. 30: 453-455. 
(3) Deherain, P.—P., and Dupont, C. 
1902. CULTURE DU BLE AU CHAMP ©’EXPERIENCES DE GRIGNON, EN 
1902. Compt. Rend. Acad. Sci. [Paris] 135: 654-657. 
(4) Haberlandt, F. 
1866. UEBER DEN EINFLUSS DES SAMENS AUF DEN ERNTEERTRAG. B6h- 
misches Centbl. Gesam. Landeskultur 1866:4. [Original not 
seen. Abstract in Jahresber. Agr. Chem. (1866) 9: 298-300. 
1868.] 
