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Gaseous Loss of Nitrogen from Plant-Soil Systems (Hardcover, 1983 ed.)
Loot Price: R3,063
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Gaseous Loss of Nitrogen from Plant-Soil Systems (Hardcover, 1983 ed.)
Series: Developments in Plant and Soil Sciences, 9
Expected to ship within 10 - 15 working days
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A growing interest has been shown recently in the dymanics of
nitrogen in agricultural and natural ecosystems. This has been
caused by increasing demands for food and fibre by a rapidly
expanding world population, and by a growing concern that increased
land clearing, cultivation and use of both fertilizer and
biologically fixed nitrogen can have detrimental effects on the
environment. These include effects on water quality, eutrophication
of surface waters and changes in atmospheric composition all caused
by increased cycling of nitrogenous compounds. The input and
availability of nitrogen frequently affects the productivity of
farming systems more than any other single management factor, but
often the nitrogen is used inefficiently. Much of the fertilizer
nitrogen applied to the soil is not utilised by the crop: it is
lost either in solution form, by leaching of nitrate, or in gaseous
forms as ammonia, nitrous oxide, nitric oxide or dinitrogen. The
leached nitrate can contaminate rivers and ground waters, while the
emitted ammonia can contaminate surface waters or combine with
atmospheric sulfur dioxide to form aerosols which affect
visibility, health and climate. There is also concern that
increased evolution of nitrous oxide will deplete the protective
ozone layer of the stratosphere. The possibility of a link between
the intensity of agricultural use of nitrogen, nitrous oxide
emissions and amounts of stratospheric ozone has focussed attention
on these interactions.
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