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6 BULLETIN 752, U. S. DEPARTMENT OF AGRICULTURE. 
be had from an examination of the figures showing the average yields 
of wheat, oats, barley, and corn on 15 leading reclamation projects 
during the three years, 1918, 1914, and 1915. These figures, which 
include about 80 per cent of the total cereal acreage on all the Gov- 
ernment reclamation projects during the three years mentioned, are 
presented in Table II. 
TABLE IIl.— Acreages and average yields of the principal cereal crops on 15 
leading reclamation projects* during 1913, 1914, and 1915. 
Rank in— 
Average eae 
Crop. annual — 
acreage Bere 
Be (pounds). | Acreage. | Yield. 
NWAG SE rcs oe Sa te a ey a iO Ee Re a 65, 787 1, 200 1 3 
QOatSE Se Oe aera aaa Seo re eo SEE Ree cc meee eee 47, 688 925 2 4 
BaTle yeas nae oars Nase oe eee So Oe ee eres one eioce 36, 583 1, 267 3 V2 
(Ofey a a Rene Oe ee Se ens Oe ee ee) are 32, 948 1,501 4 1 
1 These projects are the Salt River, Yuma, Uncompahgre, Boise, Minidoka (pumping and gravity) 
Huntley, North Platte, Truckee-Carson, Rio Grande, Klamath, Belle Fourche, Sunnyside, Tieton, and 
Shoshone. The locations of these projects are shown in figure 1. 
Considering the yields obtained with these crops and their com- 
parative suitability as supplements to alfalfa pasture in swine feed- 
ing, it appears that corn and barley should be grown more exten- 
sively. As long as irrigation farmers grow cereal crops to sell, it 
is likely that corn and barley will increase but slowly in importance. 
The necessity of developing live-stock industries in order to secure 
full utilization of the alfalfa crop and to sustain the productivity of 
the soil is becoming increasingly evident, however, and this is lead- 
ing to a better appreciation of those cereal crops which, all things 
considered, are more suitable for use in feeding operations. 
Since 1912 data showing the results obtained from alfalfa pasture 
and various supplements have been secured. These supplements in- 
clude corn, barley, wheat, shorts, and milo, each used separately, and 
a number of mixtures of one or more of these feeds and of some 
additional feeds. In the following pages data are presented to show 
the results secured on alfalfa pasture, first, without supplements, and, 
second, with supplements of various kinds. 
PASTURING ALFALFA WITHOUT SUPPLEMENTARY FEED. 
It has been generally assumed that maximum returns can not be 
secured by pasturing alfalfa with swine unless a supplementary feed 
is used, and the few tests which have been conducted have supported 
this assumption. The results obtained in three tests at the Scotts- 
bluff Experiment Farm and one on the Tieton Reclamation Project 
are shown in Table ITI. 
