24 BULLETIN 1473, U. S. DEPARTMENT OF AGRICULTURE 
* (The relation of row and block yields is shown graphically in Fig- 
ure 10. | 
\. a ae 
., pep 
N eatiel: 
. 
. 
SOS = 
MILLS HLF 0lLS HULSE MULES LS PULSE HLS Mul fUtlS HULSE AULS 
A PLANT GUTHWMED 1 PLINT UTHUWMED 1 PLABT COTRUWED | PLABT UTED = 1 PLEAD LOUD 1 PLA LTE 
SLO7TIONW/ F SLETION 2 SLOTIOV SF 
Fig. 10.— Yields (in pounds) of seed cotton per row from comparison of plantings in thinned and 
unthinned hills, Greenville, Tex., 1923 
COMPARISON OF 12-INCH SPACING WITH ROWS THINNED BY CROSS CULTIVATION 
Rows chopped to as near 12 inches as practicable were compared 
with rows thinned by cross cultivation. A 14-inch buzzard-wing sweep 
was attached to each cultivator gang and run crosswise of the row. 
In the center of the 
plot the gangs were 
raised and eight rows 
Y : 
Z skipped. These eight 
Y) rows were then 
Z chopped out. (Table 
\ 4 Z 11 and fig. 11.) 
—Y 
N y) Because of cotton 
x Z root rot killing a large 
Se Z number of plants in 
a 0, this test, the plot was 
N y harvested in a single © 
AS 100-foot section, giv- 
q ing only two compari- 
sons. Referring to 
Figure 11, showing the 
row yields, it will be 
seen that there is no 
consistent difference 
in yield between the 
Fig. 11.—Yields (in pounds) of seed cotton per.row from comparison two spacings. 3 As the 
of 12-inch spacing with rows thinned by cross cultivation, Green- cost of thinning the 
ville, Tex., 1923. eS = 
rows by cross culti- 
vating was much less than chopping out by hand, the crop from the 
cross-cultivated rows was produced at a saving over the chopped rows. 
