The Biology of Crop Productivity attempts to reassess and restate what is known about the biology underlying crop productivity. The prime question which this volume attempts to address is, "e;What is known about the biology of crop productivity from a range of diverse biological disciplines, and what needs to be known?"e; Is it possible to formulate the important biological questions, can we begin to discern the biological mechanisms and limitations which underline crop production? This volume is certainly not an all-inclusive survey. It attempts to supplement and explicate material presented in other volumes. The volume is organized into five broad areas: the first deals with various interactions of plants and their environments; the second deals with the interactions of plants with other organisms; the third treats some aspects of the internal organization of plants; the fourth examines genetic manipulations utilizing plant materials; and the fifth outlines a perspective for future research efforts. This volume is intended primarily for persons interested or actively engaged in research in the agricultural plant sciences.