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. 1913, 191-i. 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 II. — Acreages and average yields of the principal cereal crops on 15 
leading reclamation projects 1 during 1V13. lPL'i, and 1915. 
Crop. 
Average 
annual 
acreage. 
Average 
yield per 
acre 
(pounds). 
Rankin— 
Acreage. 
Yield. 
Wheat 
65. 7S7 
47. 688 
36. 5 S3 
32,94S 
1,200 
'925 
1.267 
1,501 
1 
2 
3 
4 
3 
Oars 
4 
Barley 
2 
1 
i These projects are the Salt River, Yuma, I ncompahgre, Boise, Minidoka (pumping and gravity'), 
Huntley, North Platte, Truckee-Carson, Rio Grande, Klamath, Belle Fourche, Suxmyside, 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 pastime 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. Tn 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- 
blurf Experiment Farm and one on the Tieton Eeclamation Project 
ars shown in Table III. 
