PJCE EXPERIMENTS IN CALIFORNIA. 
35 
Table 25. — Annual and average yields of 28 varieties and selections of rice grown in 
small increase plats at the Biggs Rice Field Station, Biggs, Calif., during the 7-year 
period from 1915 to 1921, inclusive. 
[Sizes of plats: In 1915, 1916, and 1917, one seventy-fifth of an acre; in 1913, one sixty-fourth of an acre; 
in 1919 and 1920, one-sixtieth of an acre.] 
Yield pei 
■acre (pounds). 
Type, group, and variety. 
C.I. 
Xo. 
1915 1916 1917 
1918 
1919 1920 
1921 
Average. 
1918 1918 
and to 
1919. 1920. 
1919 1920 
to and 
1921. 1921. 
Short grain: 
Earlv group— 
fromltalv 
Aikoku 
1994 5,670 
202S .. 
2,500 
3.445 
3,030 
Midseason group— 
1562 6 860 3.550 
Sugaippon. 
2321 
2329 
5,214 
3,584 

4,399 
3,069! 2,880 
3,036 2,880 
2,640: 2,460 
2,904 2,580 
3.102 
2,975 
2,958 
2,550 
:::::::::::::::::: 
:::::::::::: 
Selection Xo. 120... 
Selection Xo. 126 
2,742 
Selection Xo. 127 
5,610 3,712 
4.661 4.141 

Selection Xo. 134. . 
5,676 3,136 2,970 3,000 4,406 3.921 
3,035 
2,985 
Selection Xo. 13*. . 
6,072 3,264 4,668 
6,204 2,816 3.498 
Selection Xo. 139. 
4 173 
3,105 
3.249 
3;ois 
Selection Xo. 147. 
3,366 2.670 
Selection Xo. 156. . 
2,816 
2,970 
3,300 

2.670 
2,985 

3,465 3,060 
3,267 3,000 
3,696 3. ISO 
3,531 3,120 
3.2S9 
3,263 
3, 134 
3, 43< 
3,326 
:: : ::; :: 
: 

Selection Xo. 233. . 
Late group — 
Wataribune 
1561 
1991 
2307 
2316 
5344 
3,900 
5,950 2,080 
5,925 5.445 2.6sS 

4.067 3.S07 
2,175 
Shiratama 
5,940 
3,648 3,432 2,700 
3,968 3.432 3:300 
4,794 4,340 
3,260 3,066 
3,567 3,366 

5,544 
2,240 
3,00S 
3,892 
Selection No. 140... 
3,300 
2,310 
Medium grain: 
Midseason group — 
Selection No. 133. . . 
2.130 
Long grain: 
Late group — 
Asse Y-pung 
461 
1168 
3.210 
2,325 
2,475 
Unnamed 
2. 
1 
NURSERY EXPERIMENTS. 
A large number of varieties of rice from various countries as well as 
many selections have been tested at the Biggs Rice Field Station. 
These varieties and selections have been grown in rod rows spaced 3 
feet apart. Views of the rice nursery are shown in Figures 13 and 14. 
Varieties or selections that produced good yields and possessed the 
other necessary characteristics of a successful commercial rice were 
increased from the nursery to larger plats, and if the results were 
satisfactory on these plats they were sown on small increase fields. 
If their performance was satisfactory in the rod rows, on the plats. 
and on the small increase fields, the varieties or selections were in- 
creased for commercial use. From the several hundred varieties and 
selections tested during the past eight years, throe have been in- 
creased for commercial use, namelv, Colusa (C. I. No. 1600), Butte 
(C. I. No. 1564), and Caloro (C. I. No. 1561-1). It is comparatively 
easy to secure varieties or selections that have one or more desirable 
qualities, but it is difficult to find one that possesses all the desirable 
qualities that would make it a popular variety for growers, millers. 
and consumers. 
