UID:
almahu_9948233968202882
Umfang:
1 online resource (xi, 237 pages) :
,
digital, PDF file(s).
ISBN:
9780511623523 (ebook)
Inhalt:
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.
Anmerkung:
Title from publisher's bibliographic system (viewed on 05 Oct 2015).
,
Introduction: intercrops and ecology --
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The limited intentions of this book --
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The nature of ecological theory --
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Some questions of terminology --
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Overview of the general theory --
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Future use of intercrops --
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Structure of the book --
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The measurement of intercrop performance --
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The bases for comparison --
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The problem of population density and planting design --
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The yield set --
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Criteria for intercrop advantage --
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The land equivalent ratio --
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Other criteria of success --
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Some recurrent statistical problems --
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The competitive production principle --
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The basic idea --
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Some interesting antecedents --
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Niche theory, effect-response and yield sets --
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Competitive production and environmental grain --
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Applying the principle in nature --
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Facilitation --
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The basic idea --
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Effect-response and the yield set --
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Niche theory --
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Competition and facilitation together --
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The question of grain --
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The potential set --
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The environmental grain --
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More on the potential set --
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The potential set, adaptive function and environmental grain -- the details --
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The range of systems and the potential set --
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The adaptive function --
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Maximizing yield on the potential set --
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The shape of the potential set --
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Mechanisms of the competitive production principle --
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Partitioning the light environment --
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Partitioning soil resources --
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The interaction of soil factors and light --
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The environments modified to produce facilitation --
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Nitrogen --
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Water --
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Non-nitrogen nutrients --
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Protection from pests --
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The disruptive crop hypothesis --
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The enemies hypothesis.
Weitere Ausg.:
Print version: ISBN 9780521345927
Sprache:
Englisch
URL:
https://doi.org/10.1017/CBO9780511623523
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