SMALL GEAINS ON ARLINGTON EXPERIMENT FARM 5 
grain. The lodging of wheat in the rate-of -seeding experiments in 1922 
is shown in Plate I. 
Table 2. — Effect of lodging on the percentage of seed set and on the weight of kernels 
of Purplestraw wheat grovjn at the Arlington Experiment Farm in 
Condition 
Lodged 
Not lodged. 
Number 
of heads 
examined 
Average number 
per head 
Seed set 
Flowers 
Seeds 
20.9 
25.3 
178 
182 
28.3 
28.2 
Per cent 
73.9 
89.7 
Weight 
of 1,000 
Grams 
16.8 
25.8 
TEMPERATURE 
The maximum and minimum temperatures from 1912 to 1923, 
inclusive, for the months from October to June, and the mean tem- 
peratures for each month from July, 1912, to June, 1923, are shown 
in Table 3. The minimum temperature is an important factor in 
yields of fall-sown barley and oats, as is more fully brought out in 
describing the experiments with winter oats. In years in which a 
prolonged period of hot weather occurs in June when wheat and oats 
are ripening, the plants have ripened prematurely, with a corre- 
sponding lowering of the quality and quantity of the grain. 
Table 3. — Maximum, minimum, and mean monthly temperatures at the Arlington 
Experiment Farm, by months, for stated years 
[Data recorded (in degrees F.) by A. Meyer] 
Month 
Maximum: 
October. . . 
November 
December 
Maximum: 
January... 
February . 
March 
April 
May 
June 
Minimum: 
October... 
November 
December. 
1912 
1913 
1914 
1915 
1916 
1917 
1918 
1919 
1920 
1921 
1922 
88 
80 
84 
83 
89 
82 
83 
92 
87 
77 
91 
75 
77 
79 
78 
77 
70 
71 
71 
74 
80 
76 
72 
65 
64 
58 
72 
50 
67 
69 
67 
64 
64 
Aver- 
1913 
1914 
1915 
1916 
1917 
1918 
1919 
1920 
1921 
1922 
1923 
67 
72 
62 
71 
58 
46 
61 
56 
68 
62 
64 
71 
62 
67 
61 
66 
69 
63 
55 
73 
70 
60 
77 
75 
62 
73 
82 
80 
75 
76 
87 
77 
80 
86 
83 
96 
86 
87 
80 
83 
83 
93 
89 
85 
93 
97 
88 
97 
91 
96 
92 
85 
90 
89 
91 
99 
97 
92 
90 
98 
97 
94 
95 
96 
93 
100 
1913 
1914 
1915 
1916 
1917 
1918 
1919 
1920 
1921 
1922 
31 
26 
34 
33 
26 
32 
39 
30 
31 
32 
25 
18 
24 
21 
17 
21 
25 
15 
26 
23 
21 
1 
16 
11 
-5 
20 
2 
18 
15 
16 
