SOIL SURVEY OF OUTAGAMIE COUNTY. 
70 
About two tons of ground limestone per acre is the usual ap¬ 
plication where soils show slight to medium acidity. The amount 
to be used, however, may vary with the degree of acidity, the 
character of the soil, and the crop to be grown. Such crops 
as alfalfa, sweet clover, peas, cabbage, onions, and lettuce have 
a high lime requirement. Clover, garden beans, barley, hemp, 
turnips, and radishes have a medium lime requirement, while 
vetch, white clover, oats, rye, blue grass, potatoes, sorghum, and 
others have a low requirement for lime. 
Ground limestone is doubtless the most economical fortn of 
lime which can be extensively utilized in Outagamie County. 
Lime should be applied previous to planting the crop which 
is to be benefited. It should be applied to plowed land and 
thoroughly worked in by harrowing. Either fall, winter, or 
spring applications may be made on heavy soils, but on light 
soils spring application is preferable. 
The best way to apply lime is with a regular spreader made 
for this purpose, and there are a number on the market. A 
manure spreader may also be used by first putting in a thin layer 
of manure and spreading the limestone evenly on top of the 
manure. Where several farmers are so situated that they can 
work together, a lime spreader may be secured jointly for this 
purpose. 
After making a first application of two tons per acre, it is 
not likely that another application will be needed for four to 
six years, and the need should again be determined by soil 
acidity tests, as well as by the story which the crops them¬ 
selves tell. 
It should be remembered that most acid soils are also deficient 
in available phosphorus, but applying lime will not add to the 
total amount of phosphorus in the soil. The need of phos¬ 
phorus may be so great that but little result will be secured from 
liming until phosphorus is also added. Frequently the appli¬ 
cation of phosphorus alone to an acid soil will result in larger 
increases than the use of lime alone, and for this reason, it is 
important that both deficiencies should be corrected to secure 
the most economical production. 
