COST OF PRODUCING WINTER WHEAT IN GREAT PLAINS. 9 
TABLE 5.—Effect of use of tractor on total man and horse hour requirements per acre, 
winter wheat: 1920—Continued. 
41 farms, 157 crop acres 10 farms, 205 crop acres per farm. 
per farm. 
Percentage of 
Garfield County, Okla. Hours per acre. Bene Hours per acre. acreapecovered: 
age of 
acreage 
covered. Man and|Man and 
Man. | Horse. Man. | Horse. | Tractor. rorsemeleeraccor! 
Labor and power: 
Prepare land and seed........ 4.7 IDES) sabsoseae 3.5 8.3 LoSullae ssa eee 
Harvest and market......... 4.6 Ugouleere eset 4,8 6.3 a fel [sere Ek aan 
Motaliee reese ek Tar CREEPS City ae eee gia 14.6 ke vere ees ee em ie 
Wheat acreage: he 
IDO G0 Bag aasd Coane eee eden] facesece aasbesce OIG reas coces|eatss Sea Ie ete Sra 18 80 
BTS OCs peer eee eae ed erie ete otto everererei state fava ata ots sitrall sieve aten Sieicylis ale S\scetGcal| Meciarate Sr she 22 21 
ISN Oh e0 beawO emn ce ate Saran eee eae aaeees PAU) Ee ate ers Karl eer tes Peele ea 116 5 
Dane assess dedcauconcanbaas Soe eerecs ate saere LOO a | ee ears | onsen alo yayers pie 93 7 
Olin exRioeree Aobee Gdicoue cee OA SulIsnosescn moemamee 100 cogdeadallasssudée|losaesacas 48 52 
1 The percentage of the acreage covered with the harrow reflects both the acreage harrowed and the 
number of times covered. 
REQUIREMENTS OF MAJOR FIELD OPERATIONS WHEN DONE WITH HORSE AND WITH 
TRACTOR POWER. | 
Greater amounts of labor and power are required for plowing than 
for most other operations involved in wheat growing. The average 
man hours for plowing with tractor power were 1.4 less per acre than 
when this operation was performed with horsepower and 1.2 hours 
of tractor power were required as against 11.2 hours of horsepower. 
A similar relation with respect to man labor exists for all other 
operations except harvesting with the binder. On these farms for 
this work a man was used to operate the binder in addition to the 
tractor operator, which served to increase the man hours required 
for this operation when performed by tractor power. (See Table 6.) 
TABLE 6.—Comparison of requirements per acre of major field operations when done with 
horse and with tractor power, winter wheat, 1920. 
Man and horse. Man and tractor. 
Operation. Hours per acre. Hours per acre. 
Number Number 
reporting. reporting. 
Man. Horse. Man. Tractor. 
OW C2 eee ici notks or Aisa Scere sees ae: 301 ant 1. 2 82 1.3 6 
DISKIN Gehan hate see atom isie 216 1.2 5. 0 53 6 : 
EVATRO WAN Se oe serene mew aneire neeeniteen= 331 4 2.1 25 3 
Drillinteeeey eo sckncceee wee ees enecion eee 421 1 2. 8 39 5 
Citi! @wathipinder) Sass eee ss see ee 326 U 3.0 66 1.0 
HARVESTING AND THRESHING REQUIREMENTS. . 
Labor and power requirements as shown in Table 7 represent the 
three prevailing methods employed in harvesting and threshing wheat 
in the counties studied. Requirements for harvesting and threshing 
with the combine represent work done exclusively by tractor power 
59728°—24—_2 
