2019
DOI: 10.1016/j.tplants.2019.06.006
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Abstract: HIGHLIGHTS-Current practice for managing nitrogen (N) use for cereal production are not environmentally sustainable. Over-use of N fertilizers is a global problem for millions of farmers who must decide on N applications-whether, when and how much.-A combination of improved advice on N management for specific cropping regimes is required, together with a breeding target of new commercial crop varieties with sustainable yields and a low N requirement.-While N use efficiency (NUE) has been a useful concept for q… Show more

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Cited by 92 publications
(52 citation statements)
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“…Alternatively, it is often considered as a productivity index and defined as the yield produced per unit of available N ( Moll et al., 1982 ; Barraclough et al., 2010 ). Another distinct definition of NUE is to consider nitrogen responsiveness in combination with dose response curves to identify economic N-optima ( Swarbreck et al., 2019 ).…”
Section: Defining Nitrogen Use Efficiencymentioning
confidence: 99%
See 1 more Smart Citation
“…Alternatively, it is often considered as a productivity index and defined as the yield produced per unit of available N ( Moll et al., 1982 ; Barraclough et al., 2010 ). Another distinct definition of NUE is to consider nitrogen responsiveness in combination with dose response curves to identify economic N-optima ( Swarbreck et al., 2019 ).…”
Section: Defining Nitrogen Use Efficiencymentioning
confidence: 99%
“…For example, coated urea for controlled release of N, more effective timing of applications, and appropriate dose rates, taking into account soil N supply, to optimize yield and quality whilst minimizing losses and avoiding contravening legislation. A recent overview outlining strategies for reducing crop N requirements highlights the importance of taking a holistic view combining elements of improved germplasm and agronomy ( Swarbreck et al., 2019 ).…”
Section: Introductionmentioning
confidence: 99%
“…More than two-thirds of freshwater withdrawals and some 90% of total water consumption through human use globally are attributable to irrigation of crops, and water tables have been dropping at alarming rates in many parts of the world due to such water withdrawals ( Britto and Kronzucker, 2018 ). Increasing global scarcity of water will also impact the way in which N fertilizer is accessed by plants and profoundly compromise crop productivity ( Swarbreck et al , 2019 ).…”
Section: Introductionmentioning
confidence: 99%
“…Many traits valuable for plant adaptation to limited N r have likely been lost during domestication of ancestral crop species because the artificial selection of the modern high yield crops has been performed on high N r soils where NUE and the tolerance to N r limitation were not considered. Using the approach described by Swarbreck and colleagues (2019) to investigate varieties based on N r responsiveness in addition to NUE as traits will likely increase our basic understanding of the rich source of adaptation strategies of crop wild relatives and might identify target genes for genetic modification in modern crops. We consider this strategy very promising in the endeavor to generate “crops for the future” with minimal N r requirement (Fig.…”
Section: Future Directions Of N Researchmentioning
confidence: 99%