COTTON IN WEEVIL-CONTROL EXPERIMENTS 15 
as many shed bolls undoubtedly were covered with soil when the 
plants were cultivated and others were shed later in the season after 
the records were obtained. , 
Table 10 gives the number of shed bolls recorded from each section 
of row in each planting during the period from June 30 to August 2. 
These bolls were picked up every day from June 30 to July 7 and at 
intervals of two or three days thereafter. 
Boll shedding started about July 1 in the first three plantings 
and reached its peak on July 17. Although more bolls were shed 
from the April 19 planting during the period from June 30 to 
July 17, the larger numbers of bolls from the April*28 and May 5 
plantings were shed during the latter part of July. This no doubt 
was due to the larger proportion of late flowers produced by these 
plantings. 
TaBLE 10.—Numbers of shed bolls recorded from 50-foot sections of rows of cotton 
grown in successive plantings at San Antonio during the period from June 50 
to August 2, 1923 
Planted 
Planted Apr. 19 | Planted Apr. 28 Planted May 5 May 12 
a\% 
Date Block 1) Block 2, Block 1| Block 2| * | Block 1| Block 2 g| 
o N 
Rey | oe AS) 3 ane 4 Ad = 
2/4/2/4) 2 )2)2/2]8|) 2 12/3/2131 2 |e 18 
Pea Scie ea ee tel ole) SY Ne Mey le Me Ie Ol ear eal 
Hume ps0! 4 ks Ores Teele Qe TOOL. Obs Der lei Ol KOLO LOL ies Ohe OMS, OME 0 
ag Tl a RS Oe elle Sia menT | enOle el eT a Ol CO ta al Al role Or 10 
Peds Oy A eli egos Bac Tolls Ih). Gil oli6| Cai dls ai komen Oie ec O 
Soe ee ae Olen me errs ets eet ee rG tO aime Thy Gl Ol, Si a TOK Pe Olen Ole nO 
ZU Wai Si 2M WG line com oO oreo nee 8) heen BU 1 helene To OllsanO | 0 
Suri AW 2G) azo manele OL eTSIN AS Sit 7 Sl OO\ elie Ol mene 
am tina [Sa EO ee eM MA LAGI INES eal star 
Ui rae ronan ier mle ole solaane ze 6l tO Ary Oh Sh yori bin) ) Aha OI NG 
Pe a OR 15] 24) 31) 27| 97] 13] 34) 16| 33/ 96] 22| 30) 17| 18] 87] 12] 10} 22 
I ee 23] 61| 41] 35) 160] 21) 56] 17| 49] 143) 19) 46] 30] 33] 128/ 28| 21| 49 
ian Bay. a 42] 76| 67| 61) 246] 44] 80] 48/ 68) 240| 51) 51] 49| 36) 187| 26] 30] 56 
jhe Bnei a 46| 106] 92] 65] 309] 49| 97| 44| 64| 254) 48/ 46] 57) 56/ 207| 33] 30| 63 
i ae 86| 129] 107) 96) 418} 71) 149} 55] 99] 374] 75] 108} 63] 86] 332] 32| 59} 91 
LOR Ee ee 51] 117| 81} 96] 345] 67| 136] 39| 70] 312] 78) 106) 57| 83] 324] 45] 46) 91 
ZB awl ie 42} 73| 52] 90| 257| 52| 89] 55| 89| 285] 57| 78) 49| 75] 259| 40| 78] 118 
7A Balas ag 22) 33) 31) 26, 112} 29] 44/ 35] 33] 141) 35] 40] 36] 54] 165/ 28| 32] 60 
Bip eee pe 24| 12} 34} 17| 87] 36] 27] 45| 41] 149] 54] 39] 40| 63/ 201/ 57] 39) 96 
Bit eok lee Ra 21} 24} 23] 24) 92) 25] 28| 32| 66| 151] 50} 60] 44) 74| 228| 50] 58] 105 
ANS gle 22| 33| 22] 28) 105 24| 26| 22| 52] 124) 49) 55] 35] 63/ 202| 33] 45| 78 
Total______.| 412] 715] 617) 600| 2, 344] 446] 795) 428] 707] 2,376] 561| 695| 503] 683] 2, 442) 390 447) 837 
| For the period from June 30 to August 2 the total numbers of 
_ shed bolls recorded from the April 19, April 28, and May 5 plantings 
| were 2,344, 2,376, and 2,442, respectively, while only 837 shed bolls 
were recorded from the two 50-foot rows of the May 12 planting. 
The smaller number of bolls shed from the May 12 planting is due 
to the fact that fewer flowers were produced. 
The fact that the numbers of flowers produced and the numbers 
of bolls shed were nearly the same on each of the first three plantings 
indicates that there was no significant difference in the proportion of 
flowers produced and the extent of shedding during the period of 
observation. It is probabie, however, that more boll shedding would 
have been recorded on the later plantings if the counts had been 
continued in August. 
