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The joint cultivation of different species of plants (annuals or perennials) is ary common throughout the world. Such cultivation is seen in topical as well as Mediterranean zones, and even in temperate climates.

This book highlights the importance and the effects of microclimate iodifications when different species are grown together in the same area. lt amonstrates the significance of these practices and the positive character of certain combinations vis-à-vis yields, weed competition, attacks by arasites etc. It is necessary that the combinations be carefully selected to reclude adverse affects on the environment. This work has been conceived oth as an instruction manual as well as a textbook referenbe for data (often very difficult to obtain) on the interactions of climate and combinations of ultivated plants whose growth requirements are different.