Abstract
Abstract Spring wheat ( Triticum aestivum L.) yields across the Canadian prairies are rising, however, a yield gap remains between average yield and yield potential, which can be explored further under Prairie conditions. The high rates of nitrogen (N) fertilizer required for current high‐yielding cultivars may increase lodging risk adding to this yield gap. The objectives of this study were to determine the influence of intensive management through N fertilization and plant growth regulator (PGR) application, on grain yield, yield components, and their relationships, in addition to lodging risk. Field trials were conducted at two locations in 2018 and 2019 in Manitoba, Canada, to evaluate three high‐yielding spring wheat cultivars, three N management strategies, and the application of a PGR. Kernels per spike had the strongest overall linear relationship with grain yield ( r 2 = .47), while the response of spikes per plant was highly related to yield response with alterations in N and PGR management practices ( r 2 = .98). Splitting N fertilizer applications showed potential to reduce lodging risk of spring wheat, while maintaining yield and increasing protein. The PGR applications reduced lodging and increased grain yield by 91 kg ha −1 mainly through increases in kernels per spike. To achieve consistent yield increases, management practices should maximize early season N availability to target increases in spikes per plant and kernels per spike, thus a PGR application may be required to balance increased lodging risk.
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Claims 10
Claim · model-written summary
Kernels per spike had the strongest linear relationship with grain yield (r²=.47).
Not reportedTaxonDirection
Verbatim
e0“Kernels per spike had the strongest overall linear relationship with grain yield ( r 2 = .47)”
Claim · model-written summary
The response of spikes per plant was strongly related to yield response under changes in N and PGR management (r²=.98).
Not reportedTaxonDirection
Verbatim
e0“the response of spikes per plant was highly related to yield response with alterations in N and PGR management practices ( r 2 = .98)”
Claim · model-written summary
Splitting nitrogen applications showed potential to reduce wheat lodging risk.
- Taxon
- spring wheat
Triticum aestivume0 - Treatment
- Splitting N fertilizer applicationse0
- Outcome
- lodging riske0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Splitting N fertilizer applications showed potential to reduce lodging risk of spring wheat, while maintaining yield and increasing protein”
Claim · model-written summary
Splitting nitrogen applications showed potential to maintain wheat yield.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- Splitting N fertilizer applicationse0
- Outcome
- yielde0
- Direction
- maintaininge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Splitting N fertilizer applications showed potential to reduce lodging risk of spring wheat, while maintaining yield and increasing protein”
Claim · model-written summary
Splitting nitrogen applications showed potential to increase wheat protein.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- Splitting N fertilizer applicationse0
- Outcome
- proteine0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Splitting N fertilizer applications showed potential to reduce lodging risk of spring wheat, while maintaining yield and increasing protein”
Claim · model-written summary
PGR applications reduced lodging.
Not reportedTaxonComparator
Verbatim
e0“The PGR applications reduced lodging and increased grain yield by 91 kg ha −1 mainly through increases in kernels per spike”
Claim · model-written summary
PGR applications increased grain yield by 91 kg ha −1.
Not reportedTaxonComparator
Verbatim
e0“The PGR applications reduced lodging and increased grain yield by 91 kg ha −1 mainly through increases in kernels per spike”
Claim · model-written summary
PGR yield gains were mainly linked to more kernels per spike.
Not reportedTaxon
Verbatim
e0“increased grain yield by 91 kg ha −1 mainly through increases in kernels per spike”
Claim · model-written summary
Management should maximize early season nitrogen availability to increase spikes per plant and kernels per spike.
Not reportedTaxon
Verbatim
e0“management practices should maximize early season N availability to target increases in spikes per plant and kernels per spike”
Claim · model-written summary
PGR application may be required to balance increased lodging risk.
Not reportedTaxon
Verbatim
e0“a PGR application may be required to balance increased lodging risk”
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