22 
BULLETIN 1306, U. S. DEPAETMENT OF AGRICULTURE 
winter wheat either during the last half of September or the first part 
of October would seem to assure the best yields. 
Table 18. — Annual and average yields of winter ivheat, spring ivheat, oats, and 
barley sown on the dates specified for the years shown during the 6-year period' 
from 1918 to 1923, inclusive 
Yields per acre (bushels) 
Crop and date of seeding 
1918 
1919 
1920 
1921 
1922 
1923 
Aver- 
age 
Winter wheat: 
August 1 
52 9 
3.8 
9.4 
9.6 
9.5 
9.8 
7.3 
5.0 









33.9 
40.9 
43.2 
42.7 
47.9 
37.5 
30 6 
22.8 
21.7 
24.0 
28.0 
25.8 
24.4 
8 8 
26.2 
37.2 
33.8 
36.4 
44.1 
44.8 
50.6 
20.0 
20.7 
14.4 
8.9 


20.0 
20.4 
26.8 
33.4 
29.6 
23.6 
7.4 
21.3 
22.7 
14.7 



26 6 
August 15 
53.3 
55.3 
55.1 
57.2 
54.2 
46.8 
17.0 
17.9 
16.7 
12.8 
2.7 

38.4 
39.4 
40.8 
38.8 
7.3 
9.2 
25.5 
30.5 
September 1 
32 1 
September 15 
34.2 
October 1 
35.7' 
October 15 
32 0' 
November 1 
24 9 
Spring wheat: 
April 1 
16.5 1 fi.O 
13.5 
April 15 
17.8 
11.3 
9.6 


34.6 
29.2 
:^1.7 
5.3 




14 1 
May 1 
9.5 
May 15 
5.2 
June 1 
. 5' 
June 15.- - - .- . -. 

Oats: 
April 1 
24.3. 
April 15- 
22.9' 
May 1 - 
24.2' 
May 15 
1 24. 2 
21.0-' 
June 1 - - 








12.5 
5.5 
41.7 
31.1 
29.7 
13.6 
8.6 
6. 6-< 
4.9' 
Barley: 
April 1--- .- 
22. 4^ 
April 15 
27.7 
28 9 
19.6' 
May 1 
19.5; 
May 15 1 27, 1 
13.6 
June 1 20.1 
9. 6. 
June 15 
10.4 
With spring wheat, seeding later than April gave markedly lower 
yields than seeding in April, as shown in Table 18. Seeding later 
than May 15 resulted in a failure almost every year. With oats the- 
April 1 seeding showed the highest average for the time the test was- 
carried. The May 15 seeding averaged only 3.3 bushels less, but 
yields from later seedings were low. The results with barley com- 
pared very closely with those of oats, the April and early May seedings- 
yielding liest. The May 15 and June 1 seedings yielded well in 1918, 
however. In general, the results show that early seedings, not later 
than May 1, may be depended upon to give the best yields. Seedings 
later than May 1 with wheat and later than May 15 with oats and 
barley can not be depended upon to make paying crops. 
EXPERIMENTS WITH FORAGE CROPS 
Work with forage crops is conducted in cooperation with the Office 
of Forage- Crop Investigations of the Bureau of Plant Industry, 
United States Depprtment of Agriculture. This consists of variety 
tests with alfalfa, sweet clover, sorgo, and field peas; methods of 
seeding alfalfa, sweet clover, and Sudan grass; and comparisons of 
the different forage crops. 
ALFALFA 
In 1917 a variety test with alfalfa was started, consisting of 12' 
known varieties and a lot of seed of unknown origin obtained locally.. 
