Abstract
Abstract The effects of nitrogen (N) management systems on Rose and Arapahoe hard red winter wheat (Triticum aestivum L. Emend. Thell.) were measured. Nitrogen fertilizer rates of 0,55,110, and 165 kg N ha‐1 were surface broadcast as a full N rate application atpreplant or were split‐applied as two half N rates applied in the fall and spring. Supplemental N was also applied as a foliar spray treatment after anthesis at either 0 kg N ha‐1 or 33 kg N ha‐1 as a diluted urea‐ammonium nitrate solution. The grain yield of Arapahoe was generally higher than Rose across treatments, but protein was slightly lower. Splitting the N application lowered yield somewhat in both varieties compared to the entire N rate applied at preplant, but grain protein increased by nearly 0.8% with the split application over the preplant application. Grain protein also increased up to 1.6% with a late season foliar N application despite some leaf damage compared to no foliar N. Grain yield was correlated to many agronomic parameters measured throughout the growing season, but grain protein was correlated only to shoot N concentration in samples harvested at the soft dough stage (Feekes stage 11.2). Notes Corresponding author (e‐mail address: WoodardH@mg.sdstate.edu).
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Claims 7
Claim · model-written summary
Arapahoe gave generally higher grain yield than Rose across treatments.
- Taxon
- winter wheat
Triticum aestivume0 - Material
- Arapahoee1
- Outcome
- grain yielde1
- Direction
- highere1
- Comparator
- Rosee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e1“The grain yield of Arapahoe was generally higher than Rose across treatments, but protein was slightly lower”
Claim · model-written summary
Arapahoe had slightly lower grain protein than Rose.
- Taxon
- winter wheatTriticum aestivume0
- Material
- Arapahoee1
- Outcome
- proteine1
- Direction
- lowere1
- Comparator
- Rosee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e1“The grain yield of Arapahoe was generally higher than Rose across treatments, but protein was slightly lower”
Claim · model-written summary
Split nitrogen application lowered grain yield somewhat in both varieties compared with the entire preplant rate.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Splitting the N applicatione2
- Outcome
- yielde2
- Direction
- lowerede2
- Comparator
- entire N rate applied at preplante2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e2“Splitting the N application lowered yield somewhat in both varieties compared to the entire N rate applied at preplant”
Claim · model-written summary
Split nitrogen application increased grain protein by nearly 0.8% compared with preplant application.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- split applicatione3
- Outcome
- grain proteine3
- Direction
- increasede3
- Value
- 0.8%e3
- Comparator
- preplant applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e3“but grain protein increased by nearly 0.8% with the split application over the preplant application”
Claim · model-written summary
A late season foliar N application increased grain protein up to 1.6% compared with no foliar N, despite some leaf damage.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- late season foliar N applicatione4
- Outcome
- Grain proteine4
- Direction
- increasede4
- Value
- 1.6%e4
- Qualifier
- despite some leaf damagee4
- Comparator
- no foliar Ne4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e4“Grain protein also increased up to 1.6% with a late season foliar N application despite some leaf damage compared to no foliar N”
Claim · model-written summary
Grain yield was correlated with many agronomic parameters measured through the growing season.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- agronomic parameterse5
- Outcome
- Grain yielde5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e5“Grain yield was correlated to many agronomic parameters measured throughout the growing season”
Claim · model-written summary
Grain protein was correlated only with shoot N concentration at the soft dough stage.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- soft dough stage (Feekes stage 11.2)e6
- Treatment
- shoot N concentratione6
- Outcome
- grain proteine6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rose and Arapahoe hard red winter wheat”
e6“grain protein was correlated only to shoot N concentration in samples harvested at the soft dough stage (Feekes stage 11.2)”
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