Titlebook: Root Ecology; Hans Kroon,Eric J. W. Visser Book 2003 Springer-Verlag Berlin Heidelberg 2003 Boden?kologie.Wurzeln.ecology.ecology - plants

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Root Growth and Function in Relation to Soil Structure, Composition, and Strength,se problems must also be considered in appropriate combination — for example, in many soils, water stress will be accompanied by a large increase in soil strength and hence mechanical impedance to root growth. In this chapter the impact of soil structure, composition and strength on root ecology and

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Physiology, Biochemistry and Molecular Biology of Plant Root Systems Subjected to Flooding of the S term, increased incidence of soil-borne fungal and bacterial diseases can be additional problems in saturated soils. This chapter reviews morphological, physiological, metabolic and molecular responses to flooding. It largely ignores the impact on germination and of total plant submergence. The foc

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Signalling in Rhizobacteria-Plant Interactions,ater and mineral nutrients, as well as of symbiotic relationships such as the formation of root nodules in leguminous plants, in which atmospheric nitrogen is made available in reduced form. Nodulation of roots involves an intricate interplay of molecular signals between the bacterium and its host,

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Interactions Between Oxygen-Releasing Roots and Microbial Processes in Flooded Soils and Sediments,Lorenzen et al. 1998). Plants have developed various mechanisms to equip them for colonisation and growth in anoxic flooded soils and sediments, as reviewed elsewhere (Drew 1983; Armstrong et al. 1994; Blom and Voesenek 1996; Blom 1999). Changes in anatomy, morphology and metabolism are of paramount

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M. T. Tyreeechanism, or as Hayek refers to it, the telecommunication system’ (Hayek, 1945, p. 527) cannot single-handedly meet society’s needs . the acquisition and communication of knowledge; (2) the extent of ignorance; and (3) the complex nature of knowledge itself. After 1960 Hayek develops his ideas on so

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M. B. Jackson,B. Ricardna. While economics is clearly the most advanced of the social science disciplines a knowledge of economics alone is not enough. Indeed, he has said that many of the policy mistakes and wrong turnings taken by free societies can be traced to the influence on governments of economists who know only e

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