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Books > Science & Mathematics > Biology, life sciences > Life sciences: general issues > Ecological science, the Biosphere
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Microbial Activity in the Rhizosphere (Hardcover, 2006 ed.)
Loot Price: R4,605
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Microbial Activity in the Rhizosphere (Hardcover, 2006 ed.)
Series: Soil Biology, 7
Expected to ship within 10 - 15 working days
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The rhizosphere is a very complex environment in which the effects
of the plant on soil microorganisms and the effects of the
microorganisms on the plant are interacting and are interdependent.
Plant root exudates and breakdownproducts attract microbes and feed
them and, in turn, the plants often bene't from the microbes.
Interactions among microorg-
ismsandplantrootsareessentialfornutritionalrequirementsoftheplant.
Plant growth, development and productivity are largely dependent on
the soil environment in the root region rhizosphere. The new
techniques of studying the rhizosphere enables us to get a much
better understanding of the dynamics of the rhizosphere population,
such rhizosphere studies beingofinteresttoagriculturists,
soilbiologists, chemists, microbiologists andmolecularbiologists.
The rhizosphere microbes in?uence the root environment in several
ways. They may change the oxidation-reduction potential, in?uence
the availabilityofmoistureandnutrients,
producegrowthinhibitingorgrowth promoting substances in the form of
exudates, provide competition and
possiblyinducemanyothereffects.Mycorrhizalassociationsarebene?cial
in mineral uptake and in increasing root surface area for effective
ion absorption. Antagonism,
competitionandsynergisminsoilandtherhizoplane(r- zosphere) are the
most important microbial interactions to consider in the study of
rhizosphere biology. With the growing information on the production
of growth regulators, competitiveness of the microbes in the
rhizosphere, microsymbionts, and other factors, their effect upon
plant growth will become more evident. Experiments on the
introduction of microbes or their products in the rhizosphere will
help to improve our understandingofthebiologyoftherhizosp
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