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This specially curated collection features four reviews of current
and key research on improving crop nutrient use efficiency. The
first chapter explores the relationship between rhizobacteria and
plant roots, looking primarily at the recruitment of rhizobacteria
by the plant to carry out particular functions, such as nutrient
acquisition. The chapter highlights our current understanding of
the molecular determinants of legume nodulation as well as
challenges for improvements of biological nitrogen fixation in
legumes and non-legumes. The second chapter considers the rising
use of nitrogen (N) fertilizer in agriculture and its role in the
shrinking contribution of soil organic N. The chapter explores the
impact of the inefficient management of N (low nitrogen-use
efficiency) and the consequent developments of major environmental
issues, such as pollution to groundwater, oceans and the
atmosphere. The third chapter addresses key issues in using N
fertilizers in wheat production, such as product cost and
environmental impact. The chapter summarises the development of
N-efficient cultivars and their economic benefits, as well as their
role in reducing the environmental impact of excessive N fertilizer
inputs, whilst maintaining respectable yields. The final chapter
considers the use of breeding techniques, including genetic
variability, to develop more efficient wheat varieties with
improved traits related to nitrogen capture, nitrogen assimilation
and nitrogen remobilization.
This collection reviews current research on understanding nutrient
cycles, the ways crops process nutrients, the environmental effects
of fertilizer use and how this understanding can be used to improve
nutrient use efficiency for a more resource-efficient and
climate-smart agriculture. Parts 1-3 summarise research on the
primary macronutrients: nitrogen, phosphorus and potassium.
Chapters review what we know about nutrient cycles, crop nutrient
processing, potential environmental effects and ways of optimising
nutrient use efficiency (NUE). The fourth section of the book
discusses secondary macronutrients and micronutrients including:
calcium, iron, zinc, boron, manganese and molybdenum as well as
soil organic matter. The final part of the book reviews research on
optimising fertiliser use. Chapters cover topics such as assessing
nutrient availability and advances in integrated plant nutrient
management. Other chapters discuss enhanced efficiency fertilisers,
the use of bio-effectors/bio-stimulants, fertigation techniques,
foliar fertilizers and the use of treated wastes in crop nutrition.
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Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
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