MANAGEMENT OF GENERAL FARMS IN OREGON. 
Table III. — Relation of summer fallow to percentage farm income is of capital on 212 
farms in Marion and Polk Counties, Oreg. (1912). 
Item. 
Rotation area in summer fallow. 
On Salem clay. 
None. 
25 per 
cent or 
less. 
Over 25 
per 
cent. 
On Salem silt loam. 
None. 
50 per 
cent or 
less. 
Number of farms 
Average percentage of rotation area in summer fallow. 
Average capital 
Average farm income 
Percentage farm income is of capital 
11 

S11.7S3 
S687 
29 
17.6 
$27, 030 
SI, 375 
5.09 
28 
33.9 
$28,891 
S985 
3.41 
127 

S20,936 
SI, 471 
7.02 
17 
18.8 
S25, 532 
SI, 081 
4.23 
In Table III the farms are divided according to the percentage 
of the rotation area that was in summer fallow. Of the 68 clay 
farms, 11 had no summer fallow, 29 had 25 per cent or less, and 28 
had over 25 per cent of the rotation area in summer fallow. Of the 
144 silt loam farms, 127 had no summer fallow and 17 had more or 
less summer fallow. Using as a measure the percentage farm in- 
come is of the capital, it will be seen that the groups of farms having 
no summer fallow were operated most efficiently. By -dividing 5.83 
by 3.41 it will be seen that the clay farms having no summer fallow 
were 1.71 times as efficient as those having over 25 per cent of the 
rotation area in summer fallow. Likewise the silt loam farms having 
no summer fallow were 1.66 times as efficient as the farms having 
summer fallow. Hence, efficiency on these farms may be increased 
by adopting cropping systems and rotations which will decrease the 
acreage in summer fallow. 
INCOME PER PRODUCTIVE ANIMAL UNIT. 
Where crops are grown and fed to live stock on the farm, few 
factors have as great an influence as income per productive animal 
unit. Although a farm produces excellent crops, it may still be low 
in efficiency if the crops produced are fed to live stock of inferior 
quality or if poor judgment is used in marketing live stock and live- 
stock products. 
Table IV. — Relation of income per productive animal unit to percentage farm income 
is of capital on 212 farms in Marion and Polk Counties, Oreg. (1912). 
[Farms on the two types of soil divided into three groups, according to income per productive animal unit.] 
Income per productive animal unit. 
Item. 
On Salem clay. 
On Salem silt loam. 
Less 
than S44. 
S44 to 
S62. 
Over 
S62. 
Less 
than S44. 
S44to 
$62. 
Over 
$62. 
26 
S29 
S25, 739 
S738 
2.87 
96 
20 
S50 
S27, 841 
SI, 154 
4.15 
102 
22 
$77 
S22, 564 
SI, 488 
6.60 
102 
47 
S29 
$21, 090 
S931 
4.41 
89 
47 
$53 
$20, 118 
SI, 248 
6.21 
106 
50 
Average income per productive animal unit 
$82 
S23, 060 
S2, 056 
Percentage farm income is of capital 
8.92 
110 
59107°— 18— Bull. 705 2 
