AN APPRAISAL OF POWER USED ON FARMS 
57 
Table V. — Approximate -power required for farm operations 
[The data contained in this table are based on averages from all information available. Special acknowl- 
edgment is due F. N. G. Kranich for a most complete list of the power requirements for the larger farm 
operations] 
FIELD OPERATIONS 
Operation 
Conditions 
Draft, in 
pounds, per 
foot of 
width 
covered 
Horse- 
power- 
hours per 
acre 
Plowing 6 inches deep... .- 
Do.-.- 
Do 
Do 
Do 
Peg-tooth harrow 
Spring-tooth harrow 
Disk harrow (single) 
Do 
Land roller 
Drilling grain 
Mowing hay 
Raking: 
Dump rake.-- 
Side-delivery 
Hay loader (and wagon) 
Binding grain 
Heading grain 
Header-thresher (independent engine) - 
Header-thresher (bull-wheel drive) 
Corn planter 
Corn lister 
Corn cultivator. 
Corn binder 
Corn picker 
Potato digger-. - 
Stalk cutter 
Sandy loam 
Sandy clay loam. 
Clay loam 
Heavy clay 
Gumbo 
Average 
---do 
-.-do 
Heavy clay 
Average soil 
....do... 
—do.... 
.do. 
.do. 
.do. 
-do. 
.do. 
.do. 
.do. 
.do. 
.do. 
.do. 
.do. 
-do. 
200- 400 
350- 500 
400- 600 
GOO-1, 000 
, 000-1, 500 
15- 60 
25- 
50- 
100- 150 
20- 80 
20- 80 
35- 70 
15- 25 
20- 40 
50- 100 
60- 100 
50- 80 
90- 
180 
150- 
300 
Pounds 
per row 
100- 
300 
300- 
600 
130- 
300 
350- 
700 
000-1, 800 
600-1, 000 
130- 
250 
4.5 
13 
22 
.3 
.5 
1.1 
-11 
-13 
-22 
1.3 
1.5 
2.2 
2. 2 - 3. 3 
. 4 - 2. 
.4-1.8 
. 75- 1. 5 
.3 - .6 
.4 - .9 
1. 1 - 2. 2 
1. 3 - 2. 2 
1. 1 - 1. 8 
2. - 4. 
3. - 6. 5 
. 6 - 2. 5 
2. - 4. 
. 8 - 2. 5 
2. 5 - 5. 
6. 5 -12. 
5. - 7. 5 
. 8 - 2. 
HAULING 1 
Roadbed 
Concrete pavement 
Waterbound macadam. 
Gravel (good condition) 
Earth (dry and firm)... 
Hay stubble (dry) 
Corn stubble (dry) 
Plowed ground 
Draft, in 
pounds, per 
ton of 
gross load 
20- 30 
60- 80 
80-100 
80-100 
100-200 
150-300 
300-500 
Horse- 
power- 
hours per 
ton-mile 
of gross 
load 
0. 05-0. 08 
. 15- . 20 
. 2 - . 25 
. 2 - . 25 
. 2.5- . 50 
. 40- . 80 
. 80-1. 3 
BELT OPERATIONS 
Operation 
Horsepower- 
hours per unit 
Threshing wheat or rye 100 bushels 
Threshing oats or barley do 
Threshing peas or beans do 
Hulling alfalfa or clover do 
Shredding corn do 
Shelling corn do 
Cleaning grain do 
Elevating grain do 
Grinding feed do.__ 
Cutting silage or feed.. .[ Ton. 
Bahng hay or straw. do 
Pumping water (large pumps) 1,000 gallon-feet. 
i 
20 
10 
20 
100 
20 
4 
2 
,2 - 
- 40 
- 25 
- 40 
-300 
- 40 
- 8 
10 
.5 
30 
2.5 
,007- 
» See Tables XXII and XXIII for farm tonnage hauled and the average length of haul and Table XXIV 
for pounds pull eierted per drawbar horsepower for various speeds of travel. 
