CEREAL EXPERIMENTS AT THE WILLISTON SUBSTATION. Hell 
Table V shows the number of centgeners, head rows, and rod rows 
planted each year since 1908. The number of rows of winter wheat 
grown each year since 1911 is shown separately. The winter-wheat 
rows have been 1 rod long or shorter. 
Taste V.—Number of plantings of spring and winter cereals in centgeners and in rows 
at the Williston substation, 1908 to 1914, inclusive. 
Spring cereals. Spring cereals. 
W inter i W inter 
Year. wheat Year. wheat 
Cent- | Head Rod rows. Cent- | Head Rod rows. 
geners.| rows. | rows. geners.| rows. | rows. 
MOORE. e2k ee WSS SS Oa ie ee A) ee ret USD Auer ees soe geliee 53 343 507 125 
TGS eea ae, Seeetaee an eae 107 87 SOO ae a eee ae TQS Ae hopes Boa tea Rr Bioeameate | 500 180 100 
HOTORES SEO SS st 111 426 SIO) | ein eee QUAY ee eevee tere ie Mig 546 175 75 
IO be Ae ee ee 55 280 200 90 
CENTGENERS. 
In 1908 there were 156 centgener plats. The number decreased 
each year until 1913, when centgeners were discontinued. The cent- 
gener plats were planted in squares with one seed in a place, the seeds 
being 4 inches apart each way. Hach centgener was sown with seed 
from a single plant. A complete centgener contained 100 seeds, if 
a plant produced that number. Around the outside of the plat two 
rows of some other variety were sown for protection. 
The best plant in each centgener plat each year was selected for 
planting the following year. All inferior plants were discarded. The 
plant selected for continuing the centgener was the one which ap- 
proached most nearly the standard sought. 
HEAD ROWS. 
The head rows are 5 feet in length and 12 inches apart. The seeds 
are spaced 3 inches apart in the row, thus requiring 20 seeds for each 
row. 
The material tested in head rows came from various sources. 
Much of it was in the form of individual heads chosen from the 
varietal plats of wheat, oats, and barley, or from farm fields. Each 
such head was planted in a head row. 
When the work was begun, it was thought that improvement 
would result from continuous selection within a pure line. The best 
plant was selected each year from the head row, just as in the cent- 
gener, and its seed sown the following year. This plan was aban- 
doned in 1912. Thereafter a race was kept in the head row but a 
single year. If inferior, it was discarded. If promising, a rod row 
was sown the followmg year with bulk seed from the head row. 
Notes were taken throughout the season on heading, ripening, yields, 
and such other factors as were considered essential to proper com- 
parisons. 
