Outlying experiment fields as a means of determining the fertility of different soil types
1934
Duley, F.L.
It has long been recognized that information secured at the central experiment station will not apply directly to the various conditions in different parts of a state. To supply this more or less local need several methods have been employed. In some states substations have been established. These are usually few in number and cannot represent many soil types. The work done at these substations is, however, carefully conducted under the direct supervision of well-trained men. It is also extensive enough to include a wide range of experiments.
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