SINGLE-STALK COTTON CULTURE AT SAN ANTONIO. 13 
Table V shows that the range in percentage of 5-locked bolls in 
wide-spaced rows was from 47 to 72, with an average of 56, while in 
single-stalk rows the range was from 43 to 61 per cent, with an average 
of 46 per cent. 
The production of a higher percentage of 4-locked bolls in single- 
stalk rows need not be considered an undesirable feature, since 4- 
locked bolls are more readily picked and the lint in them is fully as 
good as that in 5-locked bolls. The number of 3-locked bolls is 
insignificant. =. 
SIZE OF BOLLS. 
A comparison of the size of bolls was obtained by weighing 25 
4-locked and 25 5-locked bolls from wide-spaced and single-stalk 
rows. The 4-locked bolls from simgle-stalk and wide-spaced rows 
weighed 5.04 and 5.32 grams, respectively, a difference of 0.28 gram. 
The weights of the 5-locked bolls were 5.64 and 6.2 grams for single- 
stalk and wide-spaced rows, respectively, the difference being 0.56 
eram. Bolls from wide-spaced rows in both 4 and 5 locked samples 
weighed slightly more than those from single-stalk rows. In other 
words, 19 4-locked bolls from single-stalk rows have the same weight 
as 18 4-locked bolls from wide-spaced rows, and 11 5-locked bolls frem 
single-stalk rows equal 10 5-locked bolls from wide-spaced rows. 
Five-locked bolls weighed from 0.6 to 0.8 of a gram more than 4-locked 
bolls. A slight reduction in the size of the bolls may be looked upon 
as a necessary consequence of producing a larger crop under the con- 
ditions of drought that ruled durmg the period of development of the 
bolls. 
FORMS OF ROWS. 
It has been previously shown that plants in wide-spaced rows de- 
veloped more vegetative branches at the base than plants in single- 
stalk rows. The vegetative branches spread out from the base of the 
plants in the wide-spaced rows, forming rows that in cross section 
were broader near the ground than near the top of the plants. 
Few plants in single-stalk rows had vegetative branches, so that 
the plants were made up of main stalks only. These grew erect and 
formed a narrow hedgelike row early in the season. Later, however, 
as the plants became taller, they leaned to one side or the other, 
making the rows broader at the top than near the ground. A cross 
section of a single-stalk row resembled an inverted cone or pyramid. 
This feature is clearly illustrated in Plate I, which shows an end view 
of a single-stalk row of Blackseed cotton. The contrast in form be- 
tween the single-stalk and the wide-spaced rows is illustrated in 
Plates II and IV. At the end of the season the plants in the single- 
stalk rows were more than 6 inches taller than those in the wide- 
spaced rows, being 3.96 and 3.36 feet in height, respectively. 
