5 030 
Journal of Agricultural Research 
Yol. XXX, No. 11 
Table I. —Behavior of selections from All Head Early cabbage when grown on 
yellows-sick soil at Racine, Wis. 
Series Genera- 
XL-20-1_ 
Wise. All Seasons. 
Commercial All 
Head Early. 
XL-22-1_ 
Wise. All Seasons. 
Commercial All 
Head Early. 
(XL-21-1_ 
XL-21-2__• 
<XL-21-3... 
|XL'-21-4.. 
(XL-21-5_ 
Wise. All Seasons. 1 . 
Commercial All !. 
Head Early. 
second., {£££3— 
I (XL-23—1... 
... Wise. All Seasons. 1 
_I Commercial All 
1 Head Early. I 
Behavior on affected soil 
ll if li II 
$1 f-afe! 
5 heads selected. 
Decidedly off type. 
26 heads selected. 
Good; discarded. 
Type good; pre¬ 
served. 
Very good type; 
preserved. 
• The method used in numbering the cabbage strains is as follows: A Roman numeral has been used con¬ 
sistently throughout" the trials to designate the original conimercial variety from which the selection was 
made, XL being this numeral for All Head Early. The pair of Arabic figures next appearing i. e„ between 
the dashes (-21-, etc.), indicates the year (1921, etc.) when the seed was grown, and the last figures is the 
number of the particular strain in question, 
t Seed was greenhouse grown. 
second generation strains were tried 
out in 1923. A considerable improve¬ 
ment in resistance was shown by these 
strains, and contrary to the results in 
Series I, the type was quite satisfactory 
(pi. 1, B). Strain XL-23-1 was 
discarded because of its poor resistance, 
but the remaining three were preserved 
for further selection. 
SELECTIONS FROM THE GLORY- 
COPENHAGEN TYPE 
Four separate series of selections 
have been made from the Glory- 
Copenhagen type. The results of the 
work to date are summarized in Table 
II. In each case the original selections 
were made from plantings of the 
standard variety on very sick soil, 
either in commercial fields or from 
experimental trial plots. Series I was 
selected from a commercial field at 
Union Grove, Wis.; Series II and III 
were selected from commercial rows 
in the trial plots at Racine, Wis.; and 
Series IV was selected from commercial 
rows in a demonstration plot conducted 
by F. D. Fromme at Marion, Va. 
Trials on sick soil with seed from the 
first-generation selections have been 
made in each case. In every trial a 
commercial strain of Glory of Enk- 
huizen and a strain of Wisconsin All 
Seasons were included. These trials 
extended over the years 1921 to 1923, 
and the variation between these seasons 
in the severity of yellows is again to be 
noted. In no case have any of the first 
generation strains equaled the. Wis¬ 
consin All Seasons in resistance. On 
the other hand, it will be seen by com¬ 
parison that a marked advance has 
been made over the commercial strain 
in the first selection. In fact, the 
strains in Series III and IV are at a 
point where as such they are of distinct 
commercial value. 
