30 
BULLETIN 526, XJ. S. DEPARTMENT OF AGRICULTURE. 
Table XXIV. — Grade and length of lint of five different varieties of cotton grown under 
single-stalk and old-method systems of culture in 1915. 
Grower and system of culture. 
Grade. 
Length 
of staple. 
R. K. Boner: 
Old method 
Strict Middling 
Inches, 
do 
If 
7 
John Hebert: 
Old method 
do 
7 
J. E. Tanner: 
Old method 
do 
1 
do 
1A 
if 
H 
i 
H. D. Sloan: 
Strict Low Middling 
do 
L. M. Sanderson: 
Old method 
Table XXTV shows that there was practically no difference in the 
lint from the different systems of culture . In three instances the 
length of lint was slightly (^ inch) greater for single-stalk culture, 
and in two instances the lengths were identical. In no instance did 
the lint from the old-method samples show any superiority in length 
or grade over that from the single-stalk samples. 
SUMMARY. 
Under an informal cooperative agreement with the Office of 
Extension Work in the South of the States Relations Service, 21 
experiments with single-stalk cotton culture were conducted in 1915 
in nine parishes and counties of three States, namely, Louisiana, 
Arkansas, and North Carolina. 
These experiments were located in ordinary fields of cotton, single- 
stalk culture usually being compared with older methods in alternate 
rows or in alternate blocks of 2, 3, or 4 rows. In one instance the two 
systems were compared on an acre basis. 
In all cases the old-method rows were thinned in the usual manner 
at the usual time, while the single-stalk rows were thinned later and 
the plants were left closer together than usual, as is required by this 
method. In all other respects the rows received identical treatment. 
All picking was done under the direction of either the farmer him- 
self or the county or parish agent directly interested and a record of 
the yields forwarded to Washington. 
There was no significant difference in the lint produced by the 
different systems of culture, the lint percentage, the size of the seed, 
the lint index (grams of lint on 100 seeds), and the grade and length 
of lint remaining about the same. 
Looking at all of the experiments as a group it is seen that single- 
stalk culture gave greater total yields in 18 of the 21 instances; it 
gave greater yields at the first picking in 16 of the 21 instances; it 
