12 
BULLETIN 705. IT. S. DEPARTMENT OF AGRICULTURE. 
that the group of farms having an average of 44.8 per cent of the field- 
crop area in legumes was operated 2.21 times as efficiently as the 
group of farms that grew no legumes. 
PERCENTAGE OF FIELD-CROP AREA IN CLOVER. 
Table VI shows the influence of all legumes collectively on the 
returns of the silt-loam farms. Table VII is confined to a single 
legume — clover. Of the legumes grown on these farms, clover is by 
far the most important, with vetch occupying second place. 
Table VII. — Relation of percentage of field-crop area in clover to percentage farm income 
is of capital on 144 silt loam farms in Marion and Polk Counties, Oreg. (1912). 
Item. 
All farms. 
None. 
Number of farms 
Average per oent of field-crop area in clover 
Average capital 
Average farm income 
Percentage farm income is of capital 
144 
12.0 
S21.457 
Si; 425 
6.64 
S20, 22S 
81,026 
Per cent of field- 
crop area in clover- 
Less than 
45 
11.1 
S23, 192 
81,614 
20 or 
more. 
38 
32.7 
821.372 
81'. S43 
8.63 
The importance of the clover crop is shown in Table VII. Of the 
144 farms, 61 grew no clover in 1912. Forty-five farms had an 
average of 11.1 per cent, and 38 farms had an average of 32.7 per 
cent of the field-crop area in clover. The average farm incomes of 
these three groups of farms were 5.06, 6.96, and 8.63 per cent, respec- 
tively, of the capital invested. The 38 farms having an average of 
32.7 per cent of the field-crop area in clover were 1.71 times as 
efficient as those having no clover. 
CLOVER-SEED PRODUCTION. 
Table VIII shows that clover seed was a very profitable crop in the 
Willamette Valley in 1912. The average yield per acre on the 54 
farms that produced clover seed was 286 pounds for the first crop 
and 108 pounds for the second crop. The average price received for 
clover seed was 14.67 cents. The yields and prices are averages for 
both red and alsike clover for the vear 1912. 
Table YIII. — Relation of clover-seed production to percentage farm income is o 
on 144 silt loam farms in Marion and Polk Counties, Oreg. (1912). 
f capital 
Item. 
None. 
Per cent of receipts 
from clover seed — 
Less than 
14. 
14 or 
more. 
90 
2S 
6.* 
821.971 
81,709 
7.7S 
26 
32.4 
§19,900 
81.075 
$26, 291 
82. 332 
Percentage farm income is of capital 
5.40 
S.S7 
