CEREAL EXPERIMENTS AT JUDITH BASIN SUBSTATION. 19 
time most of the effort in the nursery work has been devoted to 
studying and increasing the selections already made rather than to 
the making of new ones. 
At the present time nine selections are being grown in replicated 
plats in comparison with the mass variety, the Kharkof (C. I. No. 
1583). Milhng and baking tests are being conducted to determine 
their value in comparison with commercial varieties. 
Date-of-Seeding Experiments. 
Date-of-seeding tests with winter wheat have been conducted for 
six years. During the first three years, the Turkey (C. I. No. 1558) 
was used, while during the last three years the Kharkof (C. I. No. 1583) 
was sown. The dates included have ranged from August 1 to October 
15. The results of these experiments have been rather variable, 
due, no doubt, to the variations in climatic conditions during August 
and September of the different years. In 1909 the earliest seeding, 
August 1, gave the best results. In that year there was considerable 
winterkilling in the late-sown plats. On the average, the best 
results have been obtained from plats sown between August 12 and 
September 20. It may happen in some years that there is not 
enough moisture in the soil in August and September to help germinate 
the wheat and give it a good start. When this condition occurs, 
late seeding is likely to be better than early seeding. 
Table XIII gives the data that have been recorded in the date-of- 
seeding experiment. From this table it will be seen that in the six 
years the early September seeding (Sept. 1 to 7) has produced 
the highest average yield. There is little difference between the yields 
produced from seeding at this date and from seeding either about 
August 15 or September 15. It is probable that seeding between 
August 10 and September 20 will give good results. Wheat seeded 
after the later date is likely to get a poor start in the fall and therefore 
to winterkill. 
Table XIII. — Annual and average yields obtained in a daie-of -seeding test with winter 
wheat at the Judith Basin substation, Moccasin, Mont., during the six years from 1909 
to 1914, inclusive. 
Date of seeding. 
Yield per acre (bushels). 
1909 
1910 
1911 
1912 
1913 
1914 
1911 to 
1914. 
All years 
sown. 
Aug. 1 to 7 . . . 
Aug. 12 to 17 . 
Sept. 1 to 7 . . 
Sept. 15 to 20. 
Oct. 1 
Oct. 15 
60.5 
32.0 
24.5 
25.2 
0 
0) 
36.0 
38.6 
36.5 
C 1 ) 
24.0 
0) 
30.3 
31.0 
35.6 
35.3 
30.0 
29.3 
0) 
16.7 
20.0 
16.3 
17.5 
9.1 
28.0 
32.5 
46.0 
35.0 
26.8 
17.3 
C 1 ) 
28.7 
28.7 
30.0 
23.3 
2S.8 
27.2 
32.3 
29.1 
24.4 
21.1 
38.7 
29.8 
31.9 
28.3 
20.3 
21.1 
J Not sown. 
