12 BULLETIN 279, U. S. DEPARTMENT OF AGRICULTURE. 
spaced rows. The increase of inside rows, which approach most 
nearly the conditions of uniform field culture, was 47 per cent in favor 
of single-stalk rows. As will be shown later, the difference in yields 
from these rows favored single-stalk culture in about the proportion 
indicated by the number of bolls set. 
NUMBERS OF LOCKS IN THE BOLLS. 
Another census was made of bolls in single-stalk and wide-spaced 
rows to determine the percentages of 3, 4, and 5 locked bolls produced 
under the different systems of culture. Although the number of 
locks, or carpels, is always a variable character, the relative number 
of 3, 4, and 5 locked bolls is somewhat altered by different conditions 
of culture or climate. For instance, under irrigation a higher per- 
centage of 5-locked bolls is produced than under dry-land culture. 
In previous years it has been found that a lower percentage of 
5-locked bolls was produced under the single-stalk system of culture 
than under the wide-spacing system, and the census taken at San 
Antonio in 1914 corroborates these former results. To determine the 
percentages of bolls with 3, 4, and 5 locks, a count of at least 300 bolls 
was taken in each row and the number of locks recorded. It was, of 
course, possible to secure the required number of bolls in less row 
space in the single-stalk rows than in the wide-spaced rows. The 
percentages of 3, 4, and 5 locked bolls in sections A and B are pre- 
sented in Table V. 
TaBLE V.—Ratio of 3-locked, 4-locked, and 5-locked bolls in rows of Acala cotton in sections 
A cnd B grown under the wide-spaced and single-stalk systems of culture, San Antonio, 
fex., 1914. 
Wide-spaced rows. Single-stalk rows. 
Row No. Locks in bolls— Locks in bolls— 
5-locked 5-locked 
SS ee ee | bellsttl a ee 
3 4 5 Total. 3 4 5 Total 
pa Hs | fa Salle Ee ee 
Alternate single rows | | 
(section A): Per cent. Per cent. 
Beer ee ot, 5 ol eed meee | been Ne | Hea REA [cela SS gots sl POs) abs Cee a eve Se 202 165 367 45.0 
2 UR ah eater cil Paws aot 91 230 321 OLS Bie ees Aer ol Serotec ol rae See | See eee 
Lope eae ene ee sprees Siete) Peer ae Ha aD eee ha [hd Se ee ae oe 3 193 188 386 48.7 
DHE SESE SSSR aSBA MBiSEae 168 201 369 Ly: Sa fal Sete (acre) eres iets arsine eeres| fcegeracrcs 
7 eae ee ee ee rere rains fe ae ere |e ee SD ol a ee 3 199 162 364 44.5 
Eye tet 5 Bh aaa 2 156 | 199 | 357 55: 7. |sfec- [ocak at a loscete- Se eee 
Ee ieee ree. Saree | are evel rare ces otra | ee terete see | ne ane | eae eee 2 200 155 357 43.4 
iQ): ae Sete a eee 1 | 149 202 352 Oe A: [eae Se a cc cB ool Sk Sato | ree tee ees 
Alternate 4-row | 
blocks (section B): } 
(Si 2 OE eee tes be Se 154 181 335 54305120 S52 Se ee ee AT oe Saas re eee 
DY Bate bess ae ene Besese 142 171 313 GY: Ve Ee = SSS ricerca neta ests = IS 
GORE sere cae a ee oe 161 207 368 56027525 Soe eee ee eee ees Se eae 
(ee ie ae ee | fen daaere 192 169 361 4628 ls. Sk Ne een Soe ee oS ee 
G2 eee oot tooo SSE See oe eee ee eee eee 171 133 304 43.7 
(a ly eh Ae ee Meee) Ee SRY ol SR ero fer ce lie ae Res aa 186 146 332 44.0 
Ga oe arat mae See so ciee catee | saree see eects Bal bei c= SB 2) Fd 180 120 300 40.0 
TR ee heme ce | t ee | 2 sins ayel| eps ery ees eases | a ene see | eae 130 202 332 60.8 
Total 2222s 3 L2i3 LOO} zion ses seer 10 1,461 1,271 2, 14D: eae ce ote 
Per cent. -...-.-| 0.08 i sesh ¢ 56. 2 | 190 56. 2 0.4 SB 8: 46.3 100 46.3 
