Abstract
Large wheat ( Triticum aestivum L.) seed exhibits advantages over small seed in seedling growth and yield potential, but in seed processing, rigorous screening for large size may lead to unacceptably high screening losses. Studies were conducted to determine the effects of seeding rate (SR), N management, and foliar fungicide (FF) application on seed yield (yield of seeds above 0.094‐in. sieve size) and cleanout (percentage of seeds below 0.094‐in. sieve size), on the hypothesis that seed crop management could be altered to ensure a high proportion of large seed in a seed lot. ‘Katepwa’ wheat was seeded in 1988 and 1989 at Portage la Prairie, MB, at 18 and 36 viable seeds/sq ft, with additional N applied at seeding or broadcast at stem elongation, and FF applied at heading. In a second study, Katepwa and ‘Roblin’ wheat were seeded at Portage and at Carman, MB, in 1990, and on two seeding dates at Portage in 1991, at 9, 18, 27, and 36 viable seeds/sq ft. Generally, for Katepwa, seed yield was optimum and cleanout was minimum at a SR of 18 seeds/sq ft, although a SR of 27 seeds/sq ft appeared to be beneficial if conditions were dry during grain filling. The cultivar (C) × SR interaction was not significant, yet it appeared that Roblin required a SR of at least 27 seeds/sq ft for optimum seed yield. Additional N (beyond requirement, according to soil test reCommendations) at seeding or at stem elongation were not effective in improving seed yield or reducing cleanout losses. Foliar fungicide application resulted in statistically significant increases in seed yield and decreases in cleanout. Seed grower attention to SR and foliar disease control offer potential methods of ensuring the production of seed lots with a high proportion of large seed.
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Claims 10
Claim · model-written summary
Katepwa seed yield was optimal at 18 seeds per square foot.
- Taxon
- wheat
Triticum aestivumt0 - Material
- Katepwae0
- Treatment
- SR of 18 seeds/sq fte0
- Outcome
- seed yielde0
- Direction
- optimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for Katepwa, seed yield was optimum and cleanout was minimum at a SR of 18 seeds/sq ft”
t0“Wheat”
Claim · model-written summary
Katepwa cleanout was minimal at 18 seeds per square foot.
- Taxon
- wheatTriticum aestivumt0
- Material
- Katepwae0
- Treatment
- SR of 18 seeds/sq fte0
- Outcome
- cleanoute0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for Katepwa, seed yield was optimum and cleanout was minimum at a SR of 18 seeds/sq ft”
t0“Wheat”
Claim · model-written summary
A seeding rate of 27 seeds per square foot appeared beneficial under dry grain filling.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- SR of 27 seeds/sq fte0
- Outcome
- beneficiale0
- Direction
- beneficiale0
- Qualifier
- if conditions were dry during grain fillinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a SR of 27 seeds/sq ft appeared to be beneficial if conditions were dry during grain filling”
t0“Wheat”
Claim · model-written summary
Cultivar by seeding rate interaction was not significant.
- Taxon
- wheatTriticum aestivumt0
- Material
- cultivare0
- Outcome
- cultivar (C) × SR interactione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivar (C) × SR interaction was not significant”
t0“Wheat”
Claim · model-written summary
Roblin appeared to require at least 27 seeds per square foot for optimal seed yield.
- Taxon
- wheatTriticum aestivumt0
- Material
- Robline0
- Outcome
- SR of at least 27 seeds/sq fte0
- Value
- 27 seeds/sq fte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roblin required a SR of at least 27 seeds/sq ft for optimum seed yield”
t0“Wheat”
Claim · model-written summary
Extra nitrogen at seeding or stem elongation did not improve seed yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Additional Ne0
- Outcome
- seed yielde0
- Direction
- not effectivee0
- Comparator
- beyond requiremente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additional N (beyond requirement, according to soil test reCommendations) at seeding or at stem elongation were not effective in improving seed yield or reducing cleanout losses”
t0“Wheat”
Claim · model-written summary
Extra nitrogen did not reduce cleanout losses.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Additional Ne0
- Outcome
- cleanout lossese0
- Direction
- not effectivee0
- Comparator
- beyond requiremente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additional N (beyond requirement, according to soil test reCommendations) at seeding or at stem elongation were not effective in improving seed yield or reducing cleanout losses”
t0“Wheat”
Claim · model-written summary
Foliar fungicide significantly increased seed yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Foliar fungicide applicatione0
- Outcome
- seed yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar fungicide application resulted in statistically significant increases in seed yield and decreases in cleanout”
t0“Wheat”
Claim · model-written summary
Foliar fungicide significantly decreased cleanout.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Foliar fungicide applicatione0
- Outcome
- cleanoute0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar fungicide application resulted in statistically significant increases in seed yield and decreases in cleanout”
t0“Wheat”
Claim · model-written summary
Growers should attend to seeding rate and foliar disease control to produce large seed lots.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- SR and foliar disease controle0
- Outcome
- production of seed lots with a high proportion of large seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed grower attention to SR and foliar disease control offer potential methods of ensuring the production of seed lots with a high proportion of large seed”
t0“Wheat”
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