6 Colorado Experiment Station 
The plantings were made in adjacent plots, the condition of the 
two being as nearly uniform as possible. A few more selections were 
added in 1906. It so happened that the Turkestan strain proved to 
be so superior to the common alfalfa in both forage development 
and seed production that it was evident that a larger test of varieties 
would be desirable in order to get the best type from which selec- 
tions might be made. These first selections were finally abandoned 
and a much larger test was started in the spring of 1907. The en- 
larged test comprised sixteen choice selections from heavily seeded 
Turkestan rows. It contained, in addition, 48 regional varieties of 
alfalfa from different parts of the world, furnished to us by the 
Office of Forage Crop Investigation, United States Department of 
Agriculture. This list of varieties included alfalfas from northern 
and southern climates, from both eastern and western hemispheres. 
Each variety consisted of two square rods, sown in hills spaced 
twenty inches apart each way. Each hill was thinned to a single 
plant. The entire nursery was given, as nearly as poss-ble, the 
same culture and irrigation. During the season of 1908, the whole 
nursery was left to produce seed. 
The contrasts in results of both seed yields and forage produc- 
tion were very marked. The extreme southern strains of seed, such 
A group of hardy plants of the extremely large crowned type. This type is extremely! 
hardy. But, owing to its excessive stooling habit, it is undesirable for either hay or seeoj 
production in our climate. 
