12 BULLETIN 1320, U. S. DEPARTMENT OF AGRICULTURE | 
These records show that the plants in the April 19 and April 28 
plantings produced a larger number of squares than those in the 
plantings of May 5 and May 12. The number of squares, however, 
increased more rapidly on the later plantings during the first half of 
the squaring period, as will be seen by a comparison of the number 
of squares on the plants by July 13. On this date the average num- 
ber of squares on plants of the May 12 planting was 24.2, as compared 
with 26.6 on plants of the April 19 planting, although this planting 
had reached the fruiting stage two weeks earlier than the planting 
of May 12. 
The fact that the number of squares formed on the late plants by 
the middle of July was almost as great as the number on the early 
plants was largely due to a better development of the lower fruiting 
‘branches on plants of the later plantings. Table 8 gives the average 
number of internodes formed on fruiting branches. The numbers 
of internodes are determined from groups of fruiting branches, in order 
to simplify the presentation of the data. The first eight fruiting 
branches on plants of the May 5 and May 12 plantings developed 
more internodes than the first eight branches of the early plantings. 
The number of internodes on the upper fruiting branches was approxi- 
mately the same on the first and last plantings, while the upper fruit- 
ing branches on the second and third plantings were not so well de- 
veloped. This tendency toward the formation of more internodes 
on lower fruiting branches of late-planted cotton indicates that the 
growth of the plants was not retarded by the dry weather during 
June and the first part of July to so great an extent as with the early 
plants. This is shown in Plates I and IJ by the presence of squares 
on plants of the later plantings during the first part of August, after | 
all squares had been shed from the plants in the early plantings. 
TABLE 8.—Average number of nodes on fruiting branches of cotton planis grown in 
successive plantings at San Antonio on four different dates 
| 
Branches; Branches| Branches} Branches 
DEMS TIEICIE Spee - |" 1tod | 5to8 | 9t012 | 13to0 15 
WorhigoOist NN GeO NRE A Lee 2.8 2. 45 1.27 
AE. 28:08 ive, ee UE vas boy A Ph Ua ek DA A oA alee de BU der 2 BY | Eyes 07 9 
erg eee MUP ALLE ben heute earl lL. 27? 3074 2! abr 3 
May 10: (oGG AIT Od tere Fein 2 3.62} 2.92 10 
The average number of internodes on the first eight fruiting 
branches on plants of the May 12 planting was 3.04, as compared 
with 2.3 internodes on plants of the April 19 planting. An even 
more pronounced tendency toward the formation of a greater number 
of internodes on the lower fruiting branches of later plantings was © 
shown in the experiments at Charleston. 
FLOWERING RECORDS OF EARLY AND LATE PLANTINGS 
Flower counts were obtained from four 50-foot sections of rows in - 
the April 19, April 28, and May 5 plantings, and from two 50-foot 
sections of rows in the May 12 planting. <A section of row was located | 
on the east and west ends of rows in the first and second blocks of 
the April 19, April 28, and May 5 plantings. No flower counts were 
eS 
