Kentucky Agricultural Experiment Station. xv
effect of time upon yield; the effect of dynamiting the soil
and of subsoiling upon the life and yield of the crop. In some
instances, lime has been found to increase the yield 300 per
cent, and under no conditions thus far tried, has it failed to
give profitable returns.
6. Sweet Clover. Time and manner of seeding; effect of _
A lime. On the Experiment Station farm, lime has increased the
yield from 2,100 pounds to 5,300 pounds per acre. On the
[London experiment field, it has been shown that sweet clover
cannot be grown without lime, but with lime a satisfactory
growth is obtained, 2,800 pounds per acre having been har-
vested from a rather poor stand.
7. Soybeans. Our studies on soybeans haveincluded rates _
and methods of seeding; cultural methods? variety tests;
harvesting, curing and threshing with ordinary farm machin-
ery. The best rate of seeding and distance between rows
have been determined. Also methods of cultivation have
been worked out, also methods for harvesting and threshing
without the aid of special machinery.
3. Soiling Crops. Experiments have been conducted for
two years to determine a rotation of soiling crops that will _
furnish green feed continuously from early spring until frost.
Incidentally to this. cows were fed soiling crops and pastured
to compare the two systems. The results of this investiga-
tion are now being prepared for publication.
9. E.1'j)€i'2l’}}1('}?l Fields. A permanent soil experiment field
has been laid out on the Experiment Station farm to deter-
mine the treatment and cropping system necessary to main-
tain the fertility of soils similar to that of the Experiment
Station farm.
The principal work of the Department of Agronomy for the
year 1913 has been the location of four experimental fields in