Abstract
Abstract A primary driver of the wheat yield gap in Australia and globally is the supply of nitrogen (N) and options to increase N use efficiency (NUE) are fundamental to closure of the yield gap. Co‐application of N with phosphorus (P) is suggested as an avenue to increase fertiliser NUE, and inputs of N and P fertiliser are key variable costs in low rainfall cereal crops. Within field variability in the response to nutrients due to soil and season offers a further opportunity to refine inputs for increased efficiency. The response of wheat to N fertiliser input (0, 10, 20, 40 and 80 kg N ha ‐1 ) under four levels of P fertiliser (0, 5, 10 and 20 kg P ha −1 ) was measured on three key low rainfall cropping soils (dune, mid‐slope and swale) across a dune‐swale system in a low rainfall semi‐arid environment in South Australia, for three successive cropping seasons. Wheat on sandy soils produced significant and linear yield and protein responses across all three seasons, while wheat on a clay loam only produced a yield response in a high rainfall season. Responses to P fertiliser were measured on the sandy soils but more variable in nature and a consistent effect of increased P nutrition leading to increased NUE was not measured.
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Claims 5
Claim · model-written summary
Wheat on sandy soils showed significant linear yield responses to nitrogen in all three seasons.
- Taxon
- Wheat
Triticum aestivume0 - Treatment
- N fertilisere1
- Outcome
- yielde0
- Direction
- responsese0
- Setting
- sandy soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat on sandy soils produced significant and linear yield and protein responses across all three seasons”
e1“N fertiliser input”
Claim · model-written summary
Wheat on sandy soils showed significant linear protein responses to nitrogen in all three seasons.
- Taxon
- WheatTriticum aestivume0
- Treatment
- N fertilisere1
- Outcome
- proteine0
- Setting
- sandy soilse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat on sandy soils produced significant and linear yield and protein responses across all three seasons”
e1“N fertiliser input”
Claim · model-written summary
Wheat on clay loam showed a yield response only in a high rainfall season.
- Taxon
- wheatTriticum aestivume0
- Treatment
- N fertilisere1
- Outcome
- yielde0
- Qualifier
- high rainfall seasone0
- Setting
- clay loame0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat on a clay loam only produced a yield response in a high rainfall season”
e1“N fertiliser input”
Claim · model-written summary
Wheat on sandy soils responded to phosphorus fertiliser, with variable responses.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- P fertilisere0
- Outcome
- Responsese0
- Setting
- sandy soilse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Responses to P fertiliser were measured on the sandy soils but more variable in nature”
t0“wheat yield gap”
Claim · model-written summary
Increased phosphorus nutrition did not show a consistent increase in wheat nitrogen use efficiency.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increased P nutritione0
- Outcome
- NUEe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a consistent effect of increased P nutrition leading to increased NUE was not measured”
t0“wheat yield gap”
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See all 3,438 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.