Crop diversity is a key
tenet of sustainable agriculture. Having multiple crops that fill distinct
niches in an agro eco system improves the ability to manage weeds, diseases and
insect pests as well as potentially improving the environmental performance of
the cropping system. The goal was to write a book where as many different
existing studies as possible could be presented in a single volume, making it
easy for the reader to compare methods, results and conclusions.
This book is intended as a sequel to the Elements of Agriculture,
being a larger and more complete work, containing fuller directions for the
treatment of the different kinds of soils, for the preparation of manures, and
especially for the drainage of lands, whether level,rolling, hilly, or springy.