CORN, MILO, AND KAFIR IN THE GREAT PLAINS AREA. 7 
blowing, which is most severe during March and April. When 
soil blowing starts on a field of small grain it is almost impossible 
to stop it without some heavy cultivation, which is impossible with- 
out destroying part of the crop. There are other and minor factors 
influencing the growing of small grains which are not discussed in 
this bulletin. There will undoubtedly be occasional seasons of heavy 
rainfall, when a crop of small grain might be successfully grown, but 
as a general practice the growing of small grains in this section can 
not be too severely condemned. 
The results of the experimental work in the production of wheat, 
oats, and barley in the Great Plains by the Office of Dry-Land Agri- 
culture have been published in separate bulletins (Nos. 214, 218, and 
222, respectively) in the present series. 
SORGHUMS. 
Experimental work with the saccharine sorghums has been chiefly 
along the lines of variety and rate-of -seeding tests. On the whole, 
the yields have been very satisfactory. Very little work has been 
done in studying methods of preparation of the land for these 
crops. It is probable, however, that their relative response to differ- 
ences in cultural methods is substantially the same as that of kafir 
and milo. 
PRESENTATION OF RESULTS. 
Tables IV to XII, inclusive, present the results of experimental 
work with corn, milo, and kafir at the Garden City, Dalhart, and 
Amarillo stations. These tables give for each station the yields of 
grain and stover each year, the average yield of each for the whole 
period of years under study, the value of the crop, the cost of pro- 
ducing it, and the resulting profit or loss. 
In order to compare the relative profitableness of different methods 
it has been necessary to assign values to the products and to deter- 
mine the relative costs of producing the crops by the different 
methods under study. 
An accurate record of all the farm operations performed by 
the various methods under trial has been kept at each station. The 
average of these for the three stations is presented in Table III. 
It is recognized that this table does not exactly represent the require- 
ments of any one of the stations, but the average seems to afford a 
fair basis of comparison. From estimates and determinations of an 
average day's work the cost of each cultural operation has been com- 
puted and is given in the table. In arriving at these items of cost a 
wage scale of $2 a day for a man and $1 a day for a horse has been 
allowed. Fifteen cents per acre for wear and tear on the binder is 
added to the labor cost of harvesting. An allowance of 8 per cent 
