Tests show that the subsoil, especially of the deep phase of
Miami silt loam is frequently deficient in lime to a depth of
thirty-two inches or more. The deficiency frequently extends
down to where fine gravel and coarse sand is found in the
subsoil.
While it will be seen from tests that by far the greater part
of this land shows some degrees of acidity it does not mean that
all of the land is in immediate need of lime. Where such crops
as alfalfa, sugar beets, tobacco, peas, cabbage and other garden
crops are grown and where the acidity is medium from 2 to 3
tons per acre of ground limestone may be used with profit.
Where a liberal supply of manure is available the need for
lime will not be so great. The second application which may
be needed after 4 or 5 years will be less than the first.
Where such crops as corn, clover and oats are grown with
manure once during each rotation a smaller amount of lime will
be needed. On parts of the farm where manure cannot be ap-
plied the lime can be used with profit on such soils and may be
actually necessary for economic production. The greater need
will usually be on the higher places, rather than on the lower
slopes.
26 SOIL SURVEY OF BOCK COUNTY

. . FOX SILT LOAM.
Extent and distribution. This type occurs in comparatively
large areas several miles north of Johnstown Center, west of
Milton Junction and north of Janesville along Rock River.
Small areas are found in almost all parts of the country.
