24 
BULLETIN 1387, U. S. DEPARTMENT OP AGRICULTURE 
grain rices have rather coarse stalks, comparatively wide leaves, and 
kernels of medium length. The long-grain rices have large stalks, 
wide leaves, and long kernels. The short-grain and medium-grain 
rices usually stool more heavily than the long-grain varieties.- 
Only a small acreage in Louisiana, Texas, and Arkansas is annu- 
ally devoted to the short-grain rices, of which Wataribune is proba- 
bly the leading variety. In California about 99 per cent of the rice 
crop consists of short-grain rices, of which Caloro, Early Wataribune, 
Colusa, and Onsen are the leading varieties. 
VARIETIES GROWN ON TENTH-ACRE PLATS 
During the six years from 1919 to 1924, inclusive, 20 varieties and 
selections of short-grain rice, 1 medium-grain variety, and 3 long- 
grain varieties were grown in the field plats at the station. 
<S"00 /OOO /SOO ZOOO 2500 
% 
Sf/£>S£>?SO/V G/POt/P 
3UTT£: 
S.O/VG <5Gstf/A/ 
Fig. 6.— Average yields of representative varieties of the three standard types of rice and of different 
groups of these types grown at the Biggs Rice Field Station during the 6-year period from 1919 to 1924, 
inclusive 
In 1919 the varietal experiment was conducted on fallow land that 
had produced two crops of rice, in 1920 and 1921 on fallow land 
that had produced three crops of rice, in 1922 and 1923 on fallow land 
that had produced four crops of rice, and in 1924 on fallow land that 
had produced five crops of rice. The seed bed and stands were good 
eacli year. 
Table 14 gives the yields of the 24 varieties and strains during 
this period. In the table the short-grain rices and selections are 
grouped into early, mid-season, and late-maturing varieties. The 
medium-grained varieties are of the mid-season group, and the long- 
grain rices are mid-season and late-maturing varieties. The average 
yields of representative varieties of the different types and groups 
are shown graphically in Figure 6. 
