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Colorado Experiment Station 
thirty inches or so an open space may be left for an irrigation 
furrow. This is equivalent to seeding in narrow .beds with a crease 
or small irrigation furrow between the beds. The plan lends itself 
either to hay or seed production. The seeding may be made light or 
heavy as desired. For seed production, one to three pounds of good 
seed should furnish a stand of plants sufficient for highest seed 
yields. Eight to ten pounds would be better adapted for hay pro- 
duction. 
THE RELATION OF BEES AND OTHER INSECTS TO ALFALFA 
SEED YIELDS 
There is a theory that alfalfa seed yields are dependent on the 
presence of bees or other insects. This seems to be based on old 
textbooks, which teach that the fertilization of alfalfa flowers is 
dependent on the ‘‘tripping” by bees of the flower mechanism that 
envelops stamens and pistil. 
A typical plant of the southern or non-hardy type of alfalfa. 
