Abstract
In a field trial in 1973-5, winter wheat cv. Lely was sown on 3 dates at 3- to 4-wk intervals from end-Sept. at low (80-90 kg seed/ha) or high (160-180 kg seed/ha) sowing rates. Delaying the sowing date decreased grain yield. This decrease was caused by a smaller number of grains/ear and a lower grain wt. Sowing rate had a positive influence on the number of ears, but a negative effect on the number of grains/ear and the grain wt. With early sowing, sowing rate was found to have no effect on grain yield, due to mutual compensation of changes in yield components. With late sowing, a higher sowing rate increased the number of ears so much that a higher grain yield was achieved. The grain yield/ear depended on the age of the tiller. Tillers that emerged earlier produced more and heavier ears. The number of grains/ear and the grain wt. could be related to the rate of development of the ear-bearing shoot. The pattern of tillering was affected by the sowing date. With early sowing, most tillers emerged in autumn and winter, whereas the late-sown wheat tillered in spring. Also, the early-sown crop consisted largely of ears from early tillers, whereas the late-sown one had many ears from late-formed tillers. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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Claims 19
Claim · model-written summary
Delayed sowing decreased grain yield.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- Delaying the sowing datee0
- Outcome
- grain yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delaying the sowing date decreased grain yield”
t0“winter wheat”
Claim · model-written summary
Delayed sowing decreased grains per ear.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Delaying the sowing datee1
- Outcome
- number of grains/eare0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This decrease was caused by a smaller number of grains/ear and a lower grain wt.”
t0“winter wheat”
e1“Delaying the sowing date”
Claim · model-written summary
Delayed sowing lowered grain weight.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Delaying the sowing datee1
- Outcome
- grain wt.e0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This decrease was caused by a smaller number of grains/ear and a lower grain wt.”
t0“winter wheat”
e1“Delaying the sowing date”
Claim · model-written summary
Higher sowing rate increased ear number.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Sowing ratee0
- Outcome
- number of earse0
- Direction
- positive influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sowing rate had a positive influence on the number of ears”
t0“winter wheat”
Claim · model-written summary
Higher sowing rate decreased grains per ear.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Sowing ratee1
- Outcome
- number of grains/eare0
- Direction
- negative effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but a negative effect on the number of grains/ear and the grain wt.”
t0“winter wheat”
e1“Sowing rate”
Claim · model-written summary
Higher sowing rate decreased grain weight.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- Sowing ratee1
- Outcome
- grain wt.e0
- Direction
- negative effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but a negative effect on the number of grains/ear and the grain wt.”
t0“winter wheat”
e1“Sowing rate”
Claim · model-written summary
Sowing rate did not affect yield with early sowing.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- sowing ratee0
- Outcome
- grain yielde0
- Direction
- no effecte0
- Qualifier
- early sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With early sowing, sowing rate was found to have no effect on grain yield”
t0“winter wheat”
Claim · model-written summary
With late sowing, higher sowing rate raised grain yield.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- higher sowing ratee0
- Outcome
- grain yielde0
- Direction
- highere0
- Qualifier
- late sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With late sowing, a higher sowing rate increased the number of ears so much that a higher grain yield was achieved”
t0“winter wheat”
Claim · model-written summary
With late sowing, higher sowing rate raised ear number.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- higher sowing ratee0
- Outcome
- number of earse0
- Direction
- increasede0
- Qualifier
- late sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With late sowing, a higher sowing rate increased the number of ears so much that a higher grain yield was achieved”
t0“winter wheat”
Claim · model-written summary
Grain yield per ear depended on tiller age.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- tillere0
- Outcome
- grain yield/eare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield/ear depended on the age of the tiller”
t0“winter wheat”
Claim · model-written summary
Earlier tillers produced more ears.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- Tillerse0
- Outcome
- earse0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillers that emerged earlier produced more and heavier ears”
t0“winter wheat”
Claim · model-written summary
Earlier tillers produced heavier ears.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- Tillerse0
- Outcome
- earse0
- Direction
- heaviere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillers that emerged earlier produced more and heavier ears”
t0“winter wheat”
Claim · model-written summary
Grain number per ear related to development rate of ear-bearing shoots.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- ear-bearing shoote0
- Outcome
- number of grains/eare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of grains/ear and the grain wt. could be related to the rate of development of the ear-bearing shoot”
t0“winter wheat”
Claim · model-written summary
Grain weight related to development rate of ear-bearing shoots.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- ear-bearing shoote0
- Outcome
- grain wt.e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of grains/ear and the grain wt. could be related to the rate of development of the ear-bearing shoot”
t0“winter wheat”
Claim · model-written summary
Sowing date affected tillering pattern.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- sowing datee0
- Outcome
- pattern of tilleringe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pattern of tillering was affected by the sowing date”
t0“winter wheat”
Claim · model-written summary
Early-sown wheat tillers mostly emerged in autumn and winter.
- Taxon
- winter wheatTriticum aestivumt0
- Organ / stage
- tillerse0
- Outcome
- tillers emerged in autumn and wintere0
- Qualifier
- early sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With early sowing, most tillers emerged in autumn and winter”
t0“winter wheat”
Claim · model-written summary
Late-sown wheat tillered in spring.
- Taxon
- wheatTriticum aestivume0
- Outcome
- tillered in springe0
- Qualifier
- late-sowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the late-sown wheat tillered in spring”
Claim · model-written summary
Early-sown crops had mostly ears from early tillers.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- ears from early tillerse0
- Qualifier
- early-sowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the early-sown crop consisted largely of ears from early tillers”
t0“winter wheat”
Claim · model-written summary
Late-sown crops had many ears from late tillers.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- ears from late-formed tillerse0
- Qualifier
- late-sowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the late-sown one had many ears from late-formed tillers”
t0“winter wheat”
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