68 
less, while the 15-pound rate yielded an average of 2.5 bushels per 
acre less than the 30-pound rate. The best rate of seeding for irri- 
gated flax on a clean, well-prepared seed bed apparently is about 
30 pounds per acre, but under less favorable conditions more seed 
might be desirable. 
DATE-OF-SEEDING EXPERIMENTS. 
Damont flax was grown in date-of -seeding experiments from 1916 
to 1919, inclusive. Because of seasonal irregularities, especially 
spring rains, it was not possible to sow the flax on the exact dates 
planned. Seedings were made on three dates in 1916 and on five 
dates during each of the other three years. The experiment usually 
was conducted in duplicate. Good yields were obtained each year. 
The yields are shown in Table LII. 
Table LII. — Yields of Damont flax grown in date-of -seeding experiments on ir- 
rigated land on the Belle FoureJie Experiment Farm, 1916 to 1919, inclusive. 
Yields per acre (bushels). 
Date seeded. 
1916 
1917 
1918 
1919 
Average. 
1916 to 
1919 
1917 to 
1919 
April 15 to 23 
8.4 
23.7 
24.9 
23.2 
20.4 
14.6 
13.4 
13.0 
12.5 
12.1 
12.1 
May 1 to 8 . .. 
16.9 
12.3 
14.2 
10.7 
18.3 
May 15 to 26 
11.6 
12.5 
14.9 
14.8 
16.0 
June 1 to 10 
15.6 
June 15 to 20 
12.5 
June 30 
5.3 
I 
The highest yield was produced by the latest date of seeding in 
1916, the earliest date in 1917 and 1919, and the second earliest date 
in 1918. The results are somewhat inconclusive, but in general early 
seeding is somewhat more favorable for flax. The highest average 
yield for the 3-year period from 1917 to 1919, inclusive, was obtained 
from the seeding of May 1 to 8. The later dates of seeding produced 
progressively lower yields. Fair yields of flax from late seeding 
may be obtained in some years. The seeding of June 30, in 1917, 
was fully matured, but yielded only 5.3 bushels per acre. The flax 
was damaged considerably in irrigating, however. When possible, 
flax probably should be sown on irrigated land at Newell not later 
than the first week in May. 
LATE IRRIGATION EXPERIMENT. 
Irrigation of flax after it is in full bloom has been supposed to be 
detrimental, as it causes a renewed or second blooming and delays 
the maturity of the seed. In 1916, a single twentieth-acre plat of 
