ded
equally. They each provide one-half the commercial fertilizer and
one-half the seed, except clover seed, which the tenant is required to
furnish.

This lease provides for two clover crops out of every five crops
raised, thus supplying nitrogen abundantly, and the terms of the lease
are such that it is necessary for the tenant to keep live stock to
consume these clover crops in order to secure the most profitable
returns. The feeding of the clover makes it necessary to feed some or
all the maize and may lead to buying additional concentrates.

Stable manure is thereby supplied for the field which is to raise
maize, while mineral fertilizers may be applied to the fields sown to
wheat. On the limestone soils of the eastern states 50 pounds each of
phosphoric acid and potash per acre applied to the wheat, and 10 loads
of stable manure per acre to the maize will probably be found
sufficient to maintain the crop producing power of the soil.

In laying out a farm for a rotation it is desirable to plan the number
of fields or tracts that will go in a rotation and try to get these as
nearly equal size as possible. Having decided upon the number of years
the rotation is to run and having adjusted the fields or tracts
accordingly, it is quite possible to modify the proportion of crops by
adding one crop and dropping another at the same time. Thus, if there
are six 20-acre fields, any one of the following rotations might be
used and the change from one to another easily made:

1. Maize Maize Maize Maize Maize
2. Oats Maize Maize Maize Barley
3. Wheat Oats Oats Wheat Alfalfa
4. Clover and Wheat Clover and Clover and Alfalfa
timothy timothy timothy
5. Timothy Clover and Timothy Timothy Alfalfa
timothy
6. Timothy Timothy Timothy Timothy Alfalfa

During the first year the 20-acre field could be divided into four
tracts of five acres each, containing potatoes, cabbage, tomatoes and
sweet corn, and then followed for four or five years by any succession
of crops above outlined. The point is that a definite adjustment of
the farm to some general method of rotation and a definite system of
fertilization and soil renovation do not prevent a considerable
latitude in the crops raised. It will be obvious that the longer the
rotat