LYSIMETER EXPERIMENTS — II 73 
sulfur removed from the planted tanks is not materially different from 
that removed from the bare tanks. 
Effect of liming on removal of sulfur 
In the experiments with Dunkirk soil the application of lime was ac- 
companied by an increase in the quantity of sulfur in the drainage water. 
In the present experiments this was not the case, as may be seen in 
table 28: 
TABLE 28. Average ANNUAL REMOVAL OF SULFUR FROM LIMED AND FROM UNLIMED 
TANKS 
(In pounds per acre) 
Sulfur removed from Sulfur 
planted tanks leached 
: from cor- 
Soil treatment . Tank 1h Tank responding 
drainage Geis Total unplanted 
water oP tanks 
INGtalimed ee Geaa jase ces 13 35.2 9.6 44.8 14 43.3 
Weirme cd ereretse keeles eta: 15 380 10.7 44.4 16 39.0 
Liming the Dunkirk soil did not result in an increased formation of 
nitrates but apparently favored sulfofication. Application of lime to the 
Volusia soil was accompanied by increased nitrification but had no effect 
on the production of sulfates. This would perhaps indicate that the con- 
ditions favorable to one of these fermentations are not always favorable 
to the other. : 
REMOVAL OF PHOSPHORUS 
The Volusia soil, like the Dunkirk, has never furnished more than a 
trace of phosphorus in the drainage water. The data on removal of this 
element are therefore confined to the ash analyses of the crops. The 
average annual removal of phosphorus (calculated to the element P) is 
shown in table 29: 
