28 BULLETIN 1320, U. S. DEPARTMENT OF AGRICULTURE 
and the unthinned cotton. (Pi. III.) The cost of production was 
somewhat lower with the unthinned cotton, however, as the expense 
of chopping was eliminated. 
TasLe 16.—Yield of seed cotton in a late-planting test at San Antonio in 1923 
Number of plants Yield of seed soe 
(pounds 
Plant spacing Block | Row 
Section] Section} Per | Section] Section} Per 
A B TOW "A B row 
Unthinned__.----------- Guned Wood poten ates aes et eee 
3 276 282 558 6. 00 4, 81 10. 81 
D 1 4 320 347 667 6. 04 5. 62 11. 66 
i se ee ie Sa i a i loa 5 325 321 646°] 5.25! | 68709 Tee 
6 246 177 423 5. 50 4, 62 10. 12 
Blocks totale. os 58 bose. te coe ee eee ee See 1, 167 1,127 | 2,294 22.79 | 20.92 43. 71 
1 157 151 308 5. 75 5. 00 10. 75 
Two plants in a hill (hills 12 inches \o 2 196 189 385 9215 4.69 10. 44 
BPAll) aisee Meee Se A 8 ea a 3 181 189 370 6. 00 5. 25 11. 25 
4 149 125 274 4. 25 4, 50 8.75 
‘Block totalios 42252 Slee eee | Sea 683 654 1, 337 21. 75 19, 44 41.19 
1 179 191 370 5. 00 4, 50 9. 50 
: 2 265 307 572) ~~ 6.12 4, 69 10. 81 
Unthinned__-------------------------- ae 3| 294) 281] 5751 649| 487] 11.36 
4 218 216 434 5. 25 4, 69 9. 94 
Block totalecce. ARSE. Pas eee | se ee 956 995 |} 1,95- | 22.86} 18.75 41. 61 
i 1 143 158 301 5. 50 5. 50 11. 00 
Two plants in a hill (hills 12 inches \4 2 194 195 389 5. 20 5. 15 10. 35 
BPArb) ec so Rens ee Soe ra ea Pp meee 3 196 164 360 5. 50 5. 19 10. 69 
4 155 157 312 4, 62 5. 00 9. 62 
Block totals 2-2 8s 4. See eee eed al ee 688 674 | 1,362) 20.82 | 20.84 41. 66 
1 196 169 365 4. 50 4, 62 9, 12 
: ‘ 2 269 256 §25 5. 62 5. 00 10. 62 
SSE cae Seo oe as ae 31, 260} 271) 531/619) 5.31 | 4g. 50 
4 196 202 398 5. 62 §. 12 10. 74 
IB OCR CObal es 2 2 ee ee eee cae eee ee een 921 898 | 1,819 | 21.98 | 20.05 41. 98 
1 174 140 314 5. 62 5. 00 10. 62 
Two plants in a hill (hills 12 inches \5 2 190 191 381 5. 00 5. 00 10. 00 
Apart) s: Son LF yeaa oe Re er Mfg ge ep ae 3 177 167 344 5. 12 4,12 9. 24 
4 100 56 156 5. 00 3. 12 8.12 
Block: totaltes <3 = so Sealer Sok 641 554 | 1,195} 20.74] 17.24 37. 98 
Ly jn dates He Sete | es See eee ee 11. 50 
WUnthinnedrs: Six a2. ees Se Seen Guard_- Zales LES SAS Vere 8 ae ee era | eos 12. 00 
EEL IL UY SE Caw Sal s AL EELS (So ee eee see 11. 50 
YIELDS FROM COTTON EXPERIMENTS AT SAN ANTONIO 
The yields of seed cotton obtained from the separate field of late- 
planted cotton were greater than those from cultural and variety 
tests conducted at San Antonio during the same season. The yields 
from the late-planted cotton were exceeded only by the April 19 
planting in the successive plantings. The average row ain from 
the late-planted test, the successive plantings, two cultural tests, 
and the Lone Star blocks in the variety test are given in Table 17. 
The same variety of seed was used in ail these plantings, 
