2 BULLETIN 1202, U. S. DEPARTMENT OF AGRICULTURE. 
Three areas were selected for the investigation: (1) Harper Count 
Kansas, and Alfalfa County Okla., hereinafter referred to as the south- 
ern area; (2) Thomas, Sheridan, Trego, Gove and Logan Counties, 
Kans., hereinafter referred to as the western area; (3) Phelps and 
Kearney Counties, Nebr., hereinafter referred to as the northern area. 
The location of these areas is shown in Figure 1. 
A report was obtained from any tractor owner willing and able to 
give the desired information provided he had owned his tractor for 
at least one year and was using it for drawbar work. A few of the 
men interviewed were using two tractors and a few did not own 
any horses. 
The farms on which tractors were not owned were selected so that 
their average size would correspond as nearly as possible to the average 
size of the farms on which tractors were owned. In each area, how- 
Se 
aA 
ie 
Ce min 
nN OK LAHOMA L_] 
Fig, 1.—Areasin which investigation was made. 
ever, tractors were in use on a majority of the larger farms and it 
would have been difficult if not impossible to find nontractor farms 
equal in number, size, and type to the farms on which tractors were 
owned. 
Table 1 shows the number of farms surveyed in each area classified 
according to the type of power used. The different classes of farms 
are discussed se parately in the following pages. 
TABLE I.—Number of farms of different classes visited. 
Le . South- | Western | North- 
Type of power. ernarea.| Area. | ernarea. | Total 
PML OMANI OTROS hb ele eee aco come eee te eee ee 120 107 127 | 354 
Horses only... ..- Be bei ak Sie oa othe one's Gras sw aoe ae ee 26 31 28 | 85 
weraeLOr png NO NOTSEs, 001 occu i wads ot cbccataoc Gee eee eee 4 11 0 15 
POO LOIS SUG. NIOTSES 2 ob os Pel. Se eee 6 13 2 21 
US i a ine Senne Bae, Gedo oo Je oe. 156 162 157 475 
