Abstract
Time of application of Cu as soil dressing or foliar spray had large effects on grain yield of wheat plants grown in Cu-deficient soil in the glasshouse. Times of application of Cu (4 mg per pot in one dose) ranged from sowing to maturity in weekly intervals. The soil dressing of Cu produced excellent grain yield if applied any time from sowing to early boot stage. Little or no grain formed on any tillers which had passed this critical early boot stage at the time of application; the pollen produced by these tillers was non-viable, anthers were not exserted, and maturation was delayed. These results suggest that microsporogenesis was interrupted by Cu deficiency at or near meiosis. Tillering was the optimum time for foliar application of Cu (CuSO4 + Ca(0H)2 in suspension); early or late applications failed to produce grain. However, this form of Cu proved unsatisfactory for foliar application under glasshouse conditions, possibly owing to the absence of rain or dew.
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Claims 11
Claim · model-written summary
Copper application timing strongly affected wheat grain yield in copper deficient soil.
- Taxon
- wheat plants
Triticum aestivume0 - Treatment
- Cu as soil dressing or foliar spraye0
- Outcome
- grain yielde0
- Qualifier
- Cu-deficient soile0
- Setting
- glasshousee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Time of application of Cu as soil dressing or foliar spray had large effects on grain yield of wheat plants grown in Cu-deficient soil in the glasshouse”
Claim · model-written summary
Soil copper from sowing to early boot produced excellent grain yield.
- Taxon
- wheat plantsTriticum aestivume1
- Treatment
- soil dressing of Cue0
- Outcome
- grain yielde0
- Direction
- excellente0
- Qualifier
- from sowing to early boot stagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil dressing of Cu produced excellent grain yield if applied any time from sowing to early boot stage”
e1“wheat plants”
Claim · model-written summary
Copper after early boot yielded little or no grain on tillers past that stage.
- Taxon
- wheat plantsTriticum aestivume1
- Organ / stage
- tillerse0
- Treatment
- applicatione0
- Outcome
- grain formede0
- Direction
- Little or noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little or no grain formed on any tillers which had passed this critical early boot stage at the time of application”
e1“wheat plants”
Claim · model-written summary
Pollen from those tillers was non-viable.
- Taxon
- wheat plantsTriticum aestivume1
- Organ / stage
- pollene0
- Outcome
- non-viablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pollen produced by these tillers was non-viable”
e1“wheat plants”
Claim · model-written summary
Anthers from those tillers were not exserted.
- Taxon
- wheat plantsTriticum aestivume1
- Organ / stage
- antherse0
- Outcome
- not exsertede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“anthers were not exserted”
e1“wheat plants”
Claim · model-written summary
Maturation of those tillers was delayed.
- Taxon
- wheat plantsTriticum aestivume1
- Outcome
- maturatione0
- Direction
- delayede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maturation was delayed”
e1“wheat plants”
Claim · model-written summary
The authors inferred copper deficiency interrupted microsporogenesis near meiosis.
- Taxon
- wheat plantsTriticum aestivume1
- Treatment
- Cu deficiencye0
- Outcome
- microsporogenesis was interruptede0
- Qualifier
- at or near meiosise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“microsporogenesis was interrupted by Cu deficiency at or near meiosis”
e1“wheat plants”
Claim · model-written summary
Tillering was the optimum time for foliar copper application.
- Taxon
- wheat plantsTriticum aestivume1
- Organ / stage
- Tilleringe0
- Outcome
- optimum time for foliar application of Cue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillering was the optimum time for foliar application of Cu”
e1“wheat plants”
Claim · model-written summary
Early foliar copper application failed to produce grain.
- Taxon
- wheat plantsTriticum aestivume2
- Treatment
- earlye0
- Outcome
- produce graine0
- Direction
- failede0
- Qualifier
- foliar application of Cue1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“early or late applications failed to produce grain”
e1“foliar application of Cu”
e2“wheat plants”
Claim · model-written summary
Late foliar copper application failed to produce grain.
- Taxon
- wheat plantsTriticum aestivume2
- Treatment
- late applicationse0
- Outcome
- produce graine0
- Direction
- failede0
- Qualifier
- foliar application of Cue1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“early or late applications failed to produce grain”
e1“foliar application of Cu”
e2“wheat plants”
Claim · model-written summary
This copper formulation was unsatisfactory for foliar use in the glasshouse.
- Taxon
- wheat plantsTriticum aestivume1
- Outcome
- unsatisfactory for foliar applicatione0
- Setting
- glasshouse conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this form of Cu proved unsatisfactory for foliar application under glasshouse conditions”
e1“wheat plants”
The same questions in other papers
copper atom · yield · Triticum aestivum (wheat)Results differ
62 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
71 papers more in this group
See all 75 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.