Kentucky Agrieulzitural Escperiment St0.t2`0n 33
b. Berea, Madison County, representing the area at the
base of the knobs surrounding the bluegrass region.
This field is conducted in cooperation with Berea Col-
lege.
e. Fariston, Laurel County, representing fthe western
. part of the eastern coal field.
L d. Campbellsville, Taylor County, representing the
i Vtfaverly area. V
L e. Greenville, Muhlenberg County, representing the west-
; ern coal field.
5 f. Russellville, Logan County, representing the St. Louis
1 limestone region of southwestern Kentucky.
,1 g. Lone Oak, McCracken County, representing the soils
H . of the Purchase region.
H h. Mayfield, Graves County, representing the soils of the
L Purchase region. I
1_ i. The experiment field which was conducted at Lincoln
,0 Ridge, Shelby County, was discontinued at the lend of
Lg 1920. It was definitely shown that these soils are
FQ greatly benefited by lime and phosphate and organic
m matter, as the following crop yields prove;
. Treated with
Q manure, Increase for
Treated with limestone limestone &
Ky manure & phosphate phosphate
A Corn, average 7 crops 58.4 bu. 60.2 bu. 1.8 bu.
lm Soybean hay, avg. 7 crops 4505 lbs 6684 lbs. 2179 lbs.
m- Wheat, avg. 3 crops 10.5 bu. 18.1 bu. 7.6 bu. ~
]€_ Clover, avg. 5 crops 2250 lbs. 5100 lbs. 2850 lbs.
m' Lexington Soil Field. This field has been in operation for
the eleven years. The results continue to show that the require-
ish ments of the soils represented by this field are the maintenance
L of nitrogen and organic matter. Limestone, phosphate and
me potash salts used in addition t·o the return of crop residues in
mtr a four-year rotation of corn, soybeans, wheat and clever, have
produced no increase in eorn, an average yearly increase of
ual 1; bushels of soybeans, 2.5 bushels of wheat and 153 pounds
* ` - o clover hay.