Apr. 7,1923 Influence of Soil Temperature on Fusarium in Cabbage 61 
The roots were washed out of the soil and dry weights made of both 
shoots and roots in the usual way. The results in Table IV show the 
average of six plants from each temperature. These results are shown 
graphically in figures 3 and 4. 
TabIvK IV .—Dry weights of cabbage plants grown 5j days from seed at different soil 
temperatures 
Soil temperature. 
Wisconsin Hollander. 
Commercial Hollander. 
Shoot. 
Root. 
Shoot. 
Root. 
°C. 
Gm. 
Gm. 
Gm. 
Gm. 
14.^. 
0. 230 
0. 034 
0. 267 
0.039 
17. 
•305 
.036 
•313 
. 046 
20. 
• 302 
.036 
•313 
. 040 
n . 
•239 
019 
.236 
. 020 
26. 
. 258 
. 021 
•255 
. 019 
29. 
. 200 
. 020 
•309 
. 024 
32 . 
.185 
. 017 
•233 
. 012 
35 “ . 
. 021 
. 006 
•053 
. 005 
« The temperature rose to 38° C. during two successive nights soon after the plants appeared above ground; 
this may account for the extremely low weights occurring at this temperatme. 
This table shows that 17° to 20® C. was also the optimum soil tempera¬ 
ture for the growth of cablDage seedlings for this longer period. The dry 
weights obtained at some temperatures were even lower than the weights 
obtained for plants only 46 days old, but the difference in the composition 
of the soil was probably sufficient to account for the difference in weight. 
The bimodal condition was evident in this experiment also, but in this 
case the lowest weight occurred at 23° instead of 26°, as in the previous 
experiment. The bimodal condition in weight and the difference in color 
were probably due to the effect of temperature upon the physiological 
balance of the plants, but since no analyses have been made of plants 
