10 
BULLETIN 99, TJ. S. DEPARTMENT OF AGRICULTURE. 
the four years, 7 are from series 34, Burt X Sixty-Day; 9 are from 
series 8, Danish. Island X Asia Minor Rustproof; 4 from series 33 , 
Burt X Burt; and 1 each from series 3, Golden Giant X Asia Minor 
Rustproof; series 49, Sixty-Day X Clydesdale; series 50, Sixty-Day 
X Probsteier; series 123, Welcome; and series 131, Pringle Progress. 
AVERAGE YIELDS FOR THE VARIOUS SERIES. 
The most valuable hybrid combinations included in the tests at 
the Iowa station are series 3, Golden Giant X Asia Minor Rustproof; 
series 8, Danish Island X Asia Minor Rustproof; series 31, Burt X 
Red Rustproof; series 33, Burt X Burt; series 34, Burt X Sixty-Day; 
and series 44, Asia Minor Rustproof X Garton Tartar King. Among 
the commercial varieties the highest average yields were produced 
by selections from series 63, Burt; series 123, Welcome; series 125, 
Silvermine; series 131, Pringle Progress; and series 165, Sixty-Day. 
The annual and average yields of each series for the four years are 
shown in Table III. 
Table III. — Annual and average yields of each series of oat selections grovm at the Iowa 
station in a 4-year test, 1909 to 1912, inclusive. 
Series No. 
Number 
of selec- 
tions. 
Yield (bushels per acre). 
1909 
1910 
1911 
1912 
Average. 
Hybrids: 
3 
3 
16 
1 
20 
1 
32 
2 
10 
27 
' 2 
2 
3 
1 
14 
133 
34 
12 
62.00 
59.94 
49.00 
47.00 
37.00 
37.22 
47.71 
50.50 
48.90 
47.26 
35.50 
35. 00 
34.00 
40.00 
36. 21 
34.56 
35. 97 
27.58 
66.33 
69.50 
52.00 
57.20 
62.00 
59.44 
61.29 
45.50 
64.90 
58.19 
54.00 
54.00 
53. 33 
65.00 
59.79 
56. 97 
61.26 
44.75 
IS. 67 
16.62 
5.00 
12.85 
20.00 
18.28 
20. 57 
21.00 
18.90 
19.59 
7.50 
7.50 
16.33 
22.00 
17.57 
11.32 
14.23 
11.67 
63. 33 
70. 62 
39.00 
52.80 
49.00 
43.59 
59. 57 
49.50 
69.80 
68. 52 
54.50 
70.00 
60.00 
&5.00 
64.93 
61. 59 
54.97 
52.17 
52.33 
8 
54.31 
25 
36.00 
27 
42.40 
28 
42.00 
30 
39.22 
31 
47.43 
32 
41.50 
33 
50.60 
34 
48. 41 
38 
38.00 
41 
42.00 
42 
41.00 
44 
48 
49 
50 
51 
53. 00 
44.36 
41.28 
41.71 
34.2.5 
Total 
320 
Average 
39.06 
58.13 
14. 25 
59.43 
42.72 
Commercial varieties: 
62 
17 
6 
3 
1 
1 
1 
6 
6 
8 
2 
2 
2 
1 
5 
40.29 
41.33 
36.33 
40.00 
51.00 
41.00 
44.00 
40.33 
40.37 
41.50 
45.00 
43.00 
39.00 
38.60 
52. 41 
69.50 
59.33 
69.00 
90.00 
77.00 
70.50 
64.00 
69.50 
58.50 
54.00 
67.00 
50.00 
63.20 
22.12 
18.67 
13.00 
14.00 
24.00 
21.00 
16.50 
24.50 
20.50 
19.50 
21.00 
24.50 
30.00 
24.20 
64.12 
62.00 
46.67 
52.00 
65.00 
45.00 
45.50 
61.67 
45.12 
42.50 
48.50 
62.00 
29.00 
55.60 
44.88 
63. 
48.00 
117 
38.67 
118 
44.00 
123 
58.00 
124 
46.00 
125 
44.17 
131... 
47.67 
132 
44.00 
137 
40.50 
138 
42.00 
165 
5938 
Burt 
50.00 
37.00 
45.60 
Total 
61 
I 
Average 
40.89 
62.46 
20.90 
55.43 
44.92 
SUMMARY. 
Hybrids 
Commercial varieties 
320 
61 
39.06 
40.89 
58.13 
62.46 
14.25 
20.90 
59.43 
55. 43 
42.72 
44.92 
Total 
381 
1 
Average 
39.36 
59.04 
15.31 
58 79 
43. 12 
