Abstract
This factsheet reports on desktop modeling studies to benchmark wheat water-use efficiency (WUE) and to explore the sensitivity of WUE to changes in management practice. • WUE in the high rainfall zone can be extremely variable, as a result of environmental and agronomic constraints to grain production that limit yield potential [1, 2]. • Potential WUE, which takes into account losses due to runoff and drainage, had a maximum value of around 20 kg/ha.mm and was variable as a result of constraints of climate, soil attributes and water availability. • At most sites there was a gap of 58% to 100% between attainable and potential WUE, which could be addressed by improved crop management. Modelled scenarios showed that yield, WUE and economic returns could be improved by applying additional N fertiliser with strategic irrigation, to avoid colimitation [3] of these inputs. • In high rainfall cropping areas such as Tasmania, N supply is a key driver of yield and hence WUE. • Validation of the modelled scenarios and further field trials will be required to better understand the complexities of yield formation and efficient use of inputs in Tasmania.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Wheat WUE in the high rainfall zone was extremely variable under environmental and agronomic yield constraints.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- WUEe0
- Qualifier
- high rainfall zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WUE in the high rainfall zone can be extremely variable, as a result of environmental and agronomic constraints to grain production that limit yield potential”
t0“wheat”
Claim · model-written summary
Potential wheat WUE reached a maximum of around 20 kg/ha.mm.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Potential WUEe0
- Direction
- maximume0
- Value
- around 20 kg/ha.mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potential WUE, which takes into account losses due to runoff and drainage, had a maximum value of around 20 kg/ha.mm and was variable as a result of constraints of climate, soil attributes and water availability.”
t0“wheat”
Claim · model-written summary
A 58% to 100% gap separated attainable and potential wheat WUE at most sites.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- gape0
- Value
- 58% to 100%e0
- Qualifier
- At most sitese0
- Comparator
- attainable and potential WUEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At most sites there was a gap of 58% to 100% between attainable and potential WUE, which could be addressed by improved crop management.”
t0“wheat”
Claim · model-written summary
Model scenarios indicated additional N fertiliser with strategic irrigation could improve wheat yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- applying additional N fertiliser with strategic irrigatione0
- Outcome
- yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Modelled scenarios showed that yield, WUE and economic returns could be improved by applying additional N fertiliser with strategic irrigation, to avoid colimitation”
t0“wheat”
Claim · model-written summary
Model scenarios indicated additional N fertiliser with strategic irrigation could improve wheat WUE.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- applying additional N fertiliser with strategic irrigatione0
- Outcome
- WUEe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Modelled scenarios showed that yield, WUE and economic returns could be improved by applying additional N fertiliser with strategic irrigation, to avoid colimitation”
t0“wheat”
Claim · model-written summary
Model scenarios indicated additional N fertiliser with strategic irrigation could improve economic returns.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- applying additional N fertiliser with strategic irrigatione0
- Outcome
- economic returnse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Modelled scenarios showed that yield, WUE and economic returns could be improved by applying additional N fertiliser with strategic irrigation, to avoid colimitation”
t0“wheat”
Claim · model-written summary
N supply was identified as a key driver of yield and WUE in high rainfall wheat cropping areas.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- N supplye0
- Outcome
- yield and hence WUEe0
- Setting
- Tasmaniae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In high rainfall cropping areas such as Tasmania, N supply is a key driver of yield and hence WUE.”
t0“wheat”
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