CEKEAL EXPERIMENTS AT JUDITH BASIN SUBSTATION. 27 
from seeding as early in the spring as soil and climatic conditions per- 
mitted. In all the varietal work the effort has been to seed as early 
as possible. 
VARIETAL EXPERIMENTS IN FIELD PLATS. 
Table XIX gives the annual and average yields of 24 varieties of 
oats grown in plats at the Judith Basin substation from 1908 to 1915. 
Of the 24 varieties in this table, only 3 have been tested during the 
Fig. 10.— Heads of representative varieties of oats (left to right): 1, White Russian; 2, Siberian; 
3, Swedish Select; and 4, Sixty-Day. 
entire period and only 14 of them are now being grown. Heads 
of representative varieties of oats are shown in figure 10. 
In 1908 the oats were sown in a poor seed bed. Because of this 
and the drought in June and July, the yields were low. The year 
1909 was one of abnormally high rainfall and good yields were ob- 
tained. In 1910 quite severe drought conditions prevailed during the 
growing season and the yields were low. It is noticeable that in 
this year the early oats outyielded the late varieties. In 1911 the 
oats which ripened before the heavy August rains were the only ones 
to mature a crop. The rainfall during the month was 6.34 inches. 
This caused the late oats to make a second growth and they were not 
ripe when the first frost came. No crop was produced in 1912 be- 
