Abstract
In recent years, little agronomic research has been conducted in Australia on oats. With grain markets becoming more aware of quality traits much can be gained by understanding the response of individual cultivars to growing conditions. The commercial release of new oat cultivars identified the need to determine under what conditions the best yields and quality could be obtained for each cultivar. Nine cultivars were grown in 12 delayed sowing experiments in the wheatbelt region of Western Australia from 1997-2000. Traits assessed included grain yield and quality. Delayed sowing, reduced grain yield, seed weight and groat oil content. The yield efficiency of converting post sowing rainfall (PSRF) into yield (yield/PSRF) increased with delayed sowing. Delayed sowing also increased groat beta-glucan content and screenings below a 2.0mm screen but decreased groat percent for most cultivars. Whilst grain density and groat protein were not affected by delayed sowing. As PSRF declined, yield, seed weight, groat percent and groat oil were reduced. Grain density increased as PSRF declined for all cultivars except one. Lower PSRF also resulted in higher screenings, and slightly higher groat protein and beta-glucan content. At lower PSRF levels there was more variation in yield, grain density and screenings because the timing of rain events became more critical at lower rainfall. The difference in groat oil content between the cultivars was much larger than the effect of PSRF. In the two trials that were waterlogged, yield was reduced by approximately 1.5-1.8 t/ha, grain density was 4 kg/hL lower and protein was reduced by 2%. Under waterlogging oil content increased and yield efficiency decreased with delayed sowing. Where weed competition was observed, yields were reduced by 1.5 t/ha, seed weight by 3-9mg and groat percent by 2-3%. These findings will provide growers and industry with a greater understanding of environmental effects on oat yield and quality for oats generally and for specific cultivars.
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Claims 20
Claim · model-written summary
Delayed sowing reduced grain yield.
- Taxon
- oat
Avena sativat0 - Treatment
- Delayed sowinge0
- Outcome
- grain yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing, reduced grain yield, seed weight and groat oil content.”
t0“oat”
Claim · model-written summary
Delayed sowing reduced seed weight.
- Taxon
- oatAvena sativat0
- Treatment
- Delayed sowinge0
- Outcome
- seed weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing, reduced grain yield, seed weight and groat oil content.”
t0“oat”
Claim · model-written summary
Delayed sowing reduced groat oil content.
- Taxon
- oatAvena sativat0
- Treatment
- Delayed sowinge0
- Outcome
- groat oil contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing, reduced grain yield, seed weight and groat oil content.”
t0“oat”
Claim · model-written summary
Yield efficiency increased with delayed sowing.
- Taxon
- oatAvena sativat0
- Treatment
- delayed sowinge0
- Outcome
- yield efficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield efficiency of converting post sowing rainfall (PSRF) into yield (yield/PSRF) increased with delayed sowing.”
t0“oat”
Claim · model-written summary
Delayed sowing increased groat beta-glucan content.
- Taxon
- oatAvena sativat0
- Treatment
- Delayed sowinge0
- Outcome
- groat beta-glucan contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing also increased groat beta-glucan content and screenings below a 2.0mm screen but decreased groat percent for most cultivars.”
t0“oat”
Claim · model-written summary
Delayed sowing increased screenings below a 2.0mm screen.
- Taxon
- oatAvena sativat0
- Treatment
- Delayed sowinge0
- Outcome
- screenings below a 2.0mm screene0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing also increased groat beta-glucan content and screenings below a 2.0mm screen but decreased groat percent for most cultivars.”
t0“oat”
Claim · model-written summary
Delayed sowing decreased groat percent.
- Taxon
- oatAvena sativat0
- Treatment
- Delayed sowinge0
- Outcome
- groat percente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing also increased groat beta-glucan content and screenings below a 2.0mm screen but decreased groat percent for most cultivars.”
t0“oat”
Claim · model-written summary
Grain density and groat protein were unaffected by delayed sowing.
- Taxon
- oatAvena sativat0
- Treatment
- delayed sowinge0
- Outcome
- grain density and groat proteine0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain density and groat protein were not affected by delayed sowing”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with reduced yield.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- yielde0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As PSRF declined, yield, seed weight, groat percent and groat oil were reduced.”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with reduced seed weight.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- seed weighte0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As PSRF declined, yield, seed weight, groat percent and groat oil were reduced.”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with reduced groat percent.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- groat percente0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As PSRF declined, yield, seed weight, groat percent and groat oil were reduced.”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with reduced groat oil.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- groat oile0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As PSRF declined, yield, seed weight, groat percent and groat oil were reduced.”
t0“oat”
Claim · model-written summary
Grain density increased as PSRF declined for all cultivars except one.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- Grain densitye0
- Direction
- increasede0
- Qualifier
- except onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain density increased as PSRF declined for all cultivars except one.”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with higher screenings.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- screeningse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower PSRF also resulted in higher screenings, and slightly higher groat protein and beta-glucan content.”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with higher groat protein.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- groat proteine0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower PSRF also resulted in higher screenings, and slightly higher groat protein and beta-glucan content.”
t0“oat”
Claim · model-written summary
Lower PSRF was associated with higher beta-glucan content.
- Taxon
- oatAvena sativat0
- Treatment
- PSRFe0
- Outcome
- beta-glucan contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower PSRF also resulted in higher screenings, and slightly higher groat protein and beta-glucan content.”
t0“oat”
Claim · model-written summary
Cultivar differences in groat oil content exceeded the PSRF effect.
- Taxon
- oatAvena sativat0
- Outcome
- difference in groat oil contente0
- Direction
- much largere0
- Comparator
- effect of PSRFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The difference in groat oil content between the cultivars was much larger than the effect of PSRF.”
t0“oat”
Claim · model-written summary
Waterlogging reduced yield by 1.5-1.8 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the two trials that were waterlogged, yield was reduced by approximately 1.5-1.8 t/ha, grain density was 4 kg/hL lower and protein was reduced by 2%.”
t0“oat”
Claim · model-written summary
Waterlogging lower grain density by 4 kg/hL.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the two trials that were waterlogged, yield was reduced by approximately 1.5-1.8 t/ha, grain density was 4 kg/hL lower and protein was reduced by 2%.”
t0“oat”
Claim · model-written summary
Waterlogging reduced protein by 2%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the two trials that were waterlogged, yield was reduced by approximately 1.5-1.8 t/ha, grain density was 4 kg/hL lower and protein was reduced by 2%.”
t0“oat”
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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.