92 BULLETIN 1320, U. S. DEPARTMENT OF AGRICULTURE 
PERCENTAGE OF 5-LOCK BOLLS ON EARLY AND LATE PLANTINGS AT 
SAN ANTONIO : 
A feature that was found to differ in the several plantings was the 
proportion of bolls with five locks. A record was obtained of the 
number of locks in bolls picked from four 50-foot sections of rows in 
the April 19, April 28, and May 5 plantings. ; 
Data from each planting are presented in Table 13, showing the 
number of 4-lock and 5-lock bolls picked on August 18 and September 
10 from two 50-foot rows on the east side of the field and two 50-foot 
rows on the west side. As stated previously, the presence of Johnson 
erass on the west side of the field retarded the development of the 
plants, and lower yields were obtained than on the east side. 
The data presented in Table 13 show that a consistently higher 
percentage of 5-lock bolls were produced on the large plants in the 
east end of the rows. In the April 19 planting the large plants pro- 
duced 41.2 per cent of 5-lock bolls, as compared with only 23.8 per 
cent on the small plants. The large and small plants in the April 28 
planting produced, respectively, 49.5 and 23.8 per cent of 5-lock bolls 
and in the May 5 planting 50.3 and 27.6 per cent. There was little 
difference in the percentage of 5-lock bolls produced on the small 
plants in the first three plantings, but the percentage of these bolls 
edu on the large pints in the May 5 planting was 9 per cent 
igher than in the April 19 planting. ; 
TaBLE 13.—Number of bolls and percentage of 5-lock bolls picked on August 18 — 
and September 10 from large plants on the east end of rows and from small plants | 
on the west end of rows in the successive adjacent plantings of cotton at San 
Antonio 
Number of bolls Per- 
centage 
Date planted, 1923 Size picid of 
2 i 5-lock 
5-lock | 4-lock | 3-lock | Total bolls 
Aug. 18 70 162 1 233 30. 0 
Apr. 19-_.------------ Small plants- --------------- Sept. 10 37| 179 rig ees ieee ra 
ited. facie ere leas ee alge ee 107| 341 21 450 23.8 
Aug. 18 146 176 o| 322] 45.3 
Large plants---------------- fon 10} 105 181 1} ° 2371 366 
Métal seis oes |e oe eo pace meat (elke ae 251 357 1 609 41.2 
= | 
Apr. 28__.------------ Small plants--_-------------- Neon 0 51, one ee te 
Motel gcc ka Sa We neal 0 ape gee |e 93 294 4] 391 23.8 
‘Aug. 18| 146 99 0 245 59.6 
Large plants- --------------- Sept. 10 172 295 0 397 43.3 
at eae ra eNO ty, eat SON A. enh Sa 318 324 0 642} 49.5 
Aug. 18 36 95 0 131 27.5 
May 5__-------------- Small plants_-__------------ Sept. 10 87 295 3 315 27.6 
Ata Ge hoe ee mcg, (e ace ei Ratee AAs tae ee 123 320 3 446| 27.6 
‘Aug. 18 120 70 0 190| 63.2 
Large plants---------------- Sept.10| 178| 224 1 403 | 44.2 
b! BX0Y 2 | oaeieennee eel ge eee Oe Se eee te Ghee, Be! See ee 298 294 1 593 50. 3 
a 
