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Nutrient Use Efficiency: from Basics to Advances (Hardcover, 2015 ed.)
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Nutrient Use Efficiency: from Basics to Advances (Hardcover, 2015 ed.)
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This book addresses in detail multifaceted approaches to boosting
nutrient use efficiency (NUE) that are modified by plant
interactions with environmental variables and combine
physiological, microbial, biotechnological and agronomic aspects.
Conveying an in-depth understanding of the topic will spark the
development of new cultivars and strains to induce NUE, coupled
with best management practices that will immensely benefit
agricultural systems, safeguarding their soil, water, and air
quality. Written by recognized experts in the field, the book is
intended to provide students, scientists and policymakers with
essential insights into holistic approaches to NUE, as well as an
overview of some successful case studies. In the present
understanding of agriculture, NUE represents a question of process
optimization in response to the increasing fragility of our natural
resources base and threats to food grain security across the globe.
Further improving nutrient use efficiency is a prerequisite to
reducing production costs, expanding crop acreage into
non-competitive marginal lands with low nutrient resources, and
preventing environmental contamination. The nutrients most commonly
limiting plant growth are N, P, K, S and micronutrients like Fe,
Zn, B and Mo. NUE depends on the ability to efficiently take up the
nutrient from the soil, but also on transport, storage,
mobilization, usage within the plant and the environment. A number
of approaches can help us to understand NUE as a whole. One
involves adopting best crop management practices that take into
account root-induced rhizosphere processes, which play a pivotal
role in controlling nutrient dynamics in the soil-plant-atmosphere
continuum. New technologies, from basic tools like leaf color
charts to sophisticated sensor-based systems and laser land
leveling, can reduce the dependency on laboratory assistance and
manual labor. Another approach concerns the development of crop
plants through genetic manipulations that allow them to take up and
assimilate nutrients more efficiently, as well as identifying
processes of plant responses to nutrient deficiency stress and
exploring natural genetic variation. Though only recently
introduced, the ability of microbial inoculants to induce NUE is
gaining in importance, as the loss, immobilization, release and
availability of nutrients are mediated by soil microbial processes.
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