The Ecology of Intercropping
Cambridge University Press, 1992 M08 20 - 237 páginas
The practice of growing two or more crops together is widespread throughout the tropics and is becoming increasingly practised in temperate agriculture. The benefits of nutrient exchange, reduced weed competition and pathogen control can generate substantial improvements in growth and yield. In this book John Vandermeer, a leading worker on the subject, shows how classical ecological principles, especially those relating to competition and population ecology, can be applied to intercropping. Despite the large amount of research activity directed towards the subject over the last 20 years, the practice of intercropping has, until now, received very little serious academic attention. The Ecology of Intercropping is unique in approaching the question of intercropping from a theoretical point of view. In addition the details of the approach will take as their starting point well-accepted ecological theory. Using this basis the author shows how the approach can be used to design and evaluate intercropping systems to improve agricultural yields.
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actually adaptive function addition alternative apparently applied approach beans biomass Chapter coefficient combinations common competition competitive effect competitive production compute consider corn critical density distance ecological effect environment environmental equation example expected experiments facilitation factors field Figure given grain growth harvesting idea illustrated important increase individual intensity interaction intercrop intercrop advantage interesting involved least legume less light linear maize maximize mean measure mechanism monoculture natural negative niche nitrogen nutrient obtain occurs operative optimal particular pattern pest plant plantation population positive possible potential set predict presented principle probably problem production production principle question radiation reduced reference relationship relative represents resource secondary crop shade shadow similar simple situation soil species studies suggests theoretical theory tomatoes trap tree units Vandermeer variability weed yield yield set
Página 204 - AAA (1971) Preliminary trials on the intercropping of maize with different tropical legumes in Western Nigeria. J. Agric. Sci.
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