EFFECT OF ALFALFA ON YIELDS OF FIELD CKQPS. * 13 
At Belle Fourche, S. Dak., where the soil is heavy clay loam rich 
in organic matter, there has been no beneficial effect from alfalfa on 
the subsequent potato crop, and the effect on oats and sugar beets, 
while apparently beneficial, has been too slight to be regarded as 
significant. 
At Huntley, Mont., on a very productive clay-loam soil, the effect 
of alfalfa has been to increase the yield of potatoes about 50 bushels 
per acre, without, however, increasing the proportion of marketable 
potatoes, which has been relatively high on all plats. The alfalfa 
has apparently increased the yield of oats about 11 bushels per acre 
and the yield of sugar beets about 1.5 tons per acre. 
A comparison of the results from the use of alfalfa in the rotation 
with those from the use of farm manure shows that with potatoes at 
Scottsbluff the alf alf a is distinctly more beneficial than farm manure, 
although the latter gives excellent returns. With the other crops 
and at the other stations the differences between the effects are less 
striking, and in general the farm manure has given better results. 
WASHINGTON : GOVERNMENT PRINTING OFFICE : 1920 
