Abstract
Abstract In the northern part of the North American Great Plains the level of cultivar winterhardiness required for winter cereal production is extremely high. Therefore, for successful production in this area close attention must be paid to all factors that influence a plant's ability to attain maximum winterhardiness. In this study, the influence of date of seeding on fall growth and winter survival of winter wheat ( Triticum aestivum L.) and rye ( Secale cereale L.) was assessed in seven trials grown on udic and typic boroll soils in the northcentral part of the agricultural area of Saskatchewan. In these trials, four wheat and two rye cultivars were seeded at 2 week intervals between 1 August and 15 October in each of 3 years. During this period, rye accumulated shoot dry matter at twice the rate of wheat. However, as expected, a decrease in shoot dry weight of both wheat and rye occurred with each succeeding delay in seeding date. The only meaningful winter damage that was observed in the rye was for the last two seeding dates with ‘Cougar’. The effect of date of seeding on survival of wheat was not consistent among trials. However, average survival was highest for the 15 August and 1 September seeding dates. This was 4 to 6 weeks prior to the onset of fall conditions favorable for cold acclimation. Differences in survival among wheat cultivars were not influenced by seeding date. This allowed for utilization of the Field Survival Index to evaluate the relative effects of suboptimal seeding dates on winter survival potential of cultivars. These results demonstrate that the Field Survival Index can be used to evaluate the effects of certain management practices in addition to inherent cultivar potential on winter survival.
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Claims 8
Claim · model-written summary
Rye accumulated shoot dry matter at twice the rate of wheat in fall.
- Taxon
- rye
Secale cerealee1 - Outcome
- shoot dry mattere1
- Direction
- twicee1
- Comparator
- wheate1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rye accumulated shoot dry matter at twice the rate of wheat”
Claim · model-written summary
Shoot dry weight of wheat decreased with each succeeding delay in seeding date.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- delay in seeding datee1
- Outcome
- shoot dry weighte1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a decrease in shoot dry weight of both wheat and rye occurred with each succeeding delay in seeding date”
Claim · model-written summary
Shoot dry weight of rye decreased with each succeeding delay in seeding date.
- Taxon
- ryeSecale cerealee1
- Treatment
- delay in seeding datee1
- Outcome
- shoot dry weighte1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a decrease in shoot dry weight of both wheat and rye occurred with each succeeding delay in seeding date”
Claim · model-written summary
The only meaningful winter damage in rye occurred for the last two seeding dates with the cultivar Cougar.
- Taxon
- ryeSecale cerealee1
- Material
- Cougare1
- Treatment
- last two seeding datese1
- Outcome
- winter damagee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The only meaningful winter damage that was observed in the rye was for the last two seeding dates with ‘Cougar’”
Claim · model-written summary
The effect of seeding date on survival of wheat was not consistent among trials.
- Taxon
- wheatTriticum aestivume1
- Treatment
- date of seedinge1
- Outcome
- survivale1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The effect of date of seeding on survival of wheat was not consistent among trials”
Claim · model-written summary
Average wheat survival was highest for the 15 August and 1 September seeding dates.
- Taxon
- wheatTriticum aestivume1
- Treatment
- 15 August and 1 September seeding datese1
- Outcome
- average survivale1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The effect of date of seeding on survival of wheat was not consistent among trials. However, average survival was highest for the 15 August and 1 September seeding dates”
Claim · model-written summary
Differences in survival among wheat cultivars were not influenced by seeding date.
- Taxon
- wheatTriticum aestivume1
- Treatment
- seeding datee1
- Outcome
- Differences in survival among wheat cultivarse1
- Direction
- not influencede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Differences in survival among wheat cultivars were not influenced by seeding date”
Claim · model-written summary
The Field Survival Index can be used to evaluate effects of management practices, in addition to inherent cultivar potential, on winter survival.
Verbatim
e1“the Field Survival Index can be used to evaluate the effects of certain management practices in addition to inherent cultivar potential on winter survival”
The same questions in other papers
sowing time · survival · Triticum aestivum (wheat)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
sowing time · growth · Secale cereale (rye)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
2 papers more in this group
See all 6 papers →sowing time · growth · Triticum aestivum (wheat)Positive and negative results
47 papers in the same direction as this paper · 65 in the opposite direction
- positive
- positive
- positive
109 papers more in this group
See all 113 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.