RICE EXPERIMENTS IN CALIFORNIA. 
Table 2. — Maximum, minimum, and greatest range in temperature at tht E 
Field Station, Biggs, Calif ., from April 1 to October 31 for each year during tru 9-year 
period from 1913 to 1921, inclusive. 
[Data in degrees F.] 
Year. 
Apr. 
May. 
June. 
July. 
Aug. 
Maximum: 
1913 
86 
100 
99 
108 
112 
110 
- 
1914 
84 
100 
7 
110 
107 
99 
93 
1915 
86 
96 
102 
107 
105 
92 
1916 
84 
87 
102 
105 
104 
96 
81 
1917 
85 
86 
107 
111 
103 
101 
1918 
87 
88 
lid 
103 
105 
90 
- 
1919 
86 
99 
102 
108 
103 
1920 
91 
95 
107 
104 
106 
99 
■ 
1921 
89 
92 
107 
107 
104 
99 
Minimum: 
1913 
31 
39 
40 
46 
47 
47 
53 
55 
.53 
49 
47 
47 
1914 
38 
1915 
40 
40 
54 
55 
56 
47 
40 
1916 
37 
36 
46 
50 
50 
49 
35 
1917 
28 
39 
47 
.56 
55 
45 
' 
1918 
32 
43 
52 
>2 
54 
52 
35 
1919 
36 
43 
50 
51 
52 
47 
33 
1920 
34 
40 
52 
54 
55 
43 
34 
1921 
28 
31 
50 
53 
53 
49 
37 
Greatest range: 
1913 
40 
46 
48 
.50 
46 
4^ 
52 
1914 
33 
39 
43 
47 
49 
44 
1915 ". 
37 
34 
41 
40 
44 
40 
45 
1916 
37 
37 
44 
45 
42 
42 
37 
1917 
39 
39 
43 
44 
43 
43 
46 
1918 
44 
44 
45 
44 
38 
36 
41 
1919 
36 
41 
46 
43 
41 
42 
1920 
46 
43 
44 
44 
40 
39 
40 
45 
39 
41 
43 
41 
43 
42 
June. July, and August are the hottest months, with maximum 
temperatures of 99° F. or higher each year. April and October are 
the coolest months for which data are recorded in the table. The 
lowest temperature recorded in April was 28° F. in 1917 and 1921. 
while the lowest temperature recorded in October was 33° in 1919. 
The greatest daily range in temperature in the 9-year period was 
52 c F. in October, 1913. A daily range of 40° in temperature is quite 
common. These wide fluctuations in temperature between day and 
night affect the development of the rice crop, and only the hardier 
types of rice do well under such conditions. 
RAINFALL. 
Table 3 presents data showing the monthly, average monthly. 
yearly, and average yearly precipitation for the 9-year period from 
1913 'to 1921. inclusive, at the Biggs Rice Field Station. 
Table 3. — Monthly, average monthly, annual, and average annual precipitation at tht 
Biggs Rice Field Station, Biggs, Calif, for the 9-year period from 1913 U 
elusive. 
[Data in inches; T=trace.] 
Year. 
Jan. Feb. 
3. 51 0. 79 
10.^3 5.36 
7. 60 9. 04 
10.24 3.43 
2. 44 4 . 75 
.78 4.22 
-'• ^7 i 5. 21 
• 31 1. 93 
4. 74 l. 48 
Mar. 
Apr. 
May. 
June. 
July. 
Aug. Sept. 
Oct. 
Dec 
An- 
nual. 
1913 
1.11 
.54 
2.03 
.94 
1.28 
5.36 
1.76 
3.67 
L83 
3.16 
1.59 
. 75 

1.41 

.08 
.96 
.35 
1.39 
.50 
3.57 
.25 
.&+ 
.35 
.14 

.74 

1.81 

.29 



.14 
.11 



.37 



.03 

.i 


.66 
.55 
3.00 
. 98 
T 

0.20 

1.67 

.66 
.29 
1.81 
.91 
6.67 
.33 
1.11 
1.34 
1. 58 
2.61 
4.4C 
1.71 
1914 
1915 
1916 
1917 
1918 
1919 
2 19 5. 14 
1920 
1921 
. 6 
Average 
4. 81 4. 02 
2.06 
.92 .84 
.26 
.04 
.58 
.73 
2.68 
