Oct. 25, 1915 
Soil Temperatures 
175 
Table II. — Records of soil temperatures under different cultural methods, May , 1913, 
to May , 1915 —Continued 
plot a: tillage with cover crop —continued 
Week 
ending— 
Mini¬ 
mum. 
Maxi¬ 
mum. 
Week 
ending— 
Mini¬ 
mum. 
Maxi¬ 
mum. 
Week 
ending— 
Mini¬ 
mum. 
Maxi¬ 
mum. 
°F. 
°F. 
°F. 
®F. 
°F. 
®F. 
Sept. 8 
68.0 
7 6 - S 
Mar. 30 
33 *o 
50*0 
Oct. 19 
56.0 
60. O 
15 
59 -o 
75 -0 
Apr. 6 
41. 0 
51*0 
26 
53 *o 
60. O 
22 
55 - 5 
66.0 
13 
38.0 
46. O 
Nov. 2 
45 *o 
57 - S 
^ 29 
51.0 
61. 0 
20 
42.5 
55*5 
9 
45 -o 
53 *o 
Oct. 6 
55 - 0 
63.0 
27 
44. 0 
61. 5 
16 
43 * 0 
52. 0 
13 
54 -o 
65.0 
May 4 
5 1 * S 
66.0 
23 
34 * 0 
46. 0 
20 
5 °. o 
59 *o 
11 
52.5 
63. 0 
T. 30 
33 *o 
45 -o 
27 
43 - 5 
51.0 
18 
52.5 
64. 0 
Dec. 7 
43 * 0 
50 . 5 
Nov. 3 
25 
c6. 0 
67. 0 
14 
37 * 0 
43 * 0 
10 
41. O 
48. 0 
June 1 
64. 0 
74 * 0 
21 
34 * 5 
37 *o 
17 
37 -o 
48. 5 
8 
65 * 5 
73 - 5 
28 
34 *o 
35 *o 
24 
45 *o 
56. 0 
15 
70. 0 
77.0 
Jan. 4 
32.0 
33 * 5 
Dec. 1 
43 -o 
52*5 
22 
67. 0 
74-0 
11 
3 1 * 0 
32. 0 
8 
4 3 -o 
53 *o 
29 
68.0 
79 *o 
18 
3 1 * 0 
32.0 
15 
36.0 
42. 0 
July 6 
65.0 
75 * 5 
T. L 25 
32.0 
33 *o 
22 
36.0 
41. 0 
13 
70. 0 
80. 0 
Feb. 1 
33 *o 
34 *o 
29 
36.0 
37 -o 
20 
68.0 
78. 0 
8 
33 *o 
36.0 
Jan. 5 
35 -o 
36. 0 
* 27 
70. 0 
80. 0 
15 
32.0 
45 *o 
12 
34 *o 
3 S-o 
Au g- 3 
71. 0 
79 *o 
22 
35 *o 
40. 0 
*9 
33 *o 
34 *o 
10 
72. 0 
78. 0 
Mar, 1 
35 *o 
47.0 
26 
33 *o 
37 *o 
17 
70. 0 
77 * 5 
8 
34 *o 
37 *o 
Feb. 2 
34 * 0 
46. s 
24 
70. 0 
80. 0 
15 
35 *o 
41. 0 
9 
34 *o 
40, 0 
3 1 
66.5 
74*5 
22 
36.0 
40. 0 
16 
33 *o 
34 * 0 
Sept. 7 
64. 0 
74*5 
A 29 
35 *o 
41. 0 
23 
32.0 
33 *o 
14 
59 - S 
72. 0 
Apr. 5 
35 *o 
42. 0 
Mar. 2 
31.0 
33 -o 
21 
61. 5 
73-5 
12 
40. 0 
52. 5 
9 
31.0 
32.0 
28 
57 *o 
74 *o 
19 
44.0 
55 *o 
16 
30.0 
32 * 5 
Oct. s 
58.0 
64- 5 
26 
50.0 
66. 0 
2 3 
31*0 
34 *o 
12 
59 *o 
67.5 
May 3 
57 *o 
60. 0 
PLOT c: STRAW MULCH 
May 5 
47.0 
53 *o 
Oct. 6 
58. 0 
61. 0 
Mar. 9 
33 *o 
34 -o 
12 
50.0 
53 *o 
13 
57 *o 
61. 5 
16 
33 *o 
. 33*5 
*9 
50.0 
56.0 
20 
5 1 * 5 
58.5 
23 
33 *o 
34 -o 
26 
55 *o 
57 *o 
27 
50.0 
54 *o 
. 30 
33 *o 
37 *o 
June 2 
56.0 
60. 0 
Nov. 3 
Apr. 6 
37*5 
42. 0 
9 
58.5 
61. 5 
10 
45 *o 
48. 0 
13 
38. 0 
43 *o 
16 
57 *o 
60. 0 
17 
42. 0 
47 *o 
20 
40. 0 
48. 0 
23 
60. 0 
65.0 
24 
46. 0 
5 1 * 5 
27 
44*5 
49*5 
30 
64. 0 
70. 0 
Dec. 1 
47.0 
5 i*o 
May 4 
49.0 
5 i *5 
July 7 
68.0 
71, 0 
8 
46. s 
Si* 0 
11 
5 i*o 
52.5 
14 
67. 0 
69. 0 
15 
41. 0 
47.0 
18 
5 i*o 
54*5 
21 
68.0 
71. 0 
22 
39 * 5 
42. s 
25 
52.0 
55 *o 
28 
66. 0 
68.5 
29 
38. 0 
40. 0 
June 1 
56.0 
59*5 
Aug. 4 
68. 0 
70. 0 
Jan. 5 
37 * 5 
38. 5 
8 
58.0 
62. 0 
11 
66. 0 
70. 0 
12 
36. 0 
39 *o 
i 5 
63.0 
65.0 
18 
70. 0 
72. 0 
19 
34 *o 
36.0 
22 
60. 5 
64. 0 
25 
68. 0 
72. 0 
26 
36.0 
38. 0 
29 
64. 0 
67. 0 
Sept. 1 
66. 0 
69. 0 
Feb. 2 
37 *o 
41* 5 
July 6 
63.0 
65,0 
8 
66. 0 
70. 0 
9 
35 *o 
39 *o 
13 
64. 0 
67-5 
15 
62. 0 
69. 0 
16 
34 *o 
35 *o 
20 
66. 0 
68. 0 
22 
61. 0 
64* S 
23 
32. 5 
35 *o 
27 
66. 0 
69. 0 
29 
57*5 
61.0 
Mar. 2 
33 *o 
34 *o 
Aug. 3 
65.0 
70. 0 
