Abstract
Abstract Preliminary tests were carried out using ammonium thiosulphate as a chemical thinning agent for apple (‘Cox's Orange Pippin’ and ‘Braeburn’) blossoms. Ethephon and NAA (1‐napthylacetic acid) were included for comparison. Whole tree sprays of 37 g/l ammonium thiosulphate over‐thinned ‘Cox's Orange Pippin’ blossoms and severely scorched blossoms, foliage, and apical meristems. Ethephon at 0.35 g/l also over‐thinned, and NAA thinned to an intermediate extent when compared with the controls. When the lower concentration of 3.7 g/l ammonium thiosulphate was directly applied to stamens and styles of ‘Braeburn’ blossoms by brush, initial fruit set was only 30% that of untreated blossoms. When 0.35 g/l ethephon was directly applied by brush to spur leaves or petals of ‘Braeburn’ blossoms at pink bud, initial fruit set was only 23% that of untreated blossoms. It is concluded that ammonium thiosulphate has the potential to thin apple blossoms. Further experiments to define optimum concentrations and spray volumes are needed.
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Claims 7
Claim · model-written summary
Whole-tree sprays of 37 g/l ammonium thiosulphate over-thinned Cox's Orange Pippin blossoms.
- Taxon
- apple
Malus domesticae0 - Material
- Cox's Orange Pippine1
- Treatment
- Whole tree sprays of 37 g/l ammonium thiosulphatee1
- Outcome
- blossomse1
- Direction
- over‐thinnede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e1“Whole tree sprays of 37 g/l ammonium thiosulphate over‐thinned ‘Cox's Orange Pippin’ blossoms”
Claim · model-written summary
Whole-tree sprays of 37 g/l ammonium thiosulphate severely scorched apple blossoms, foliage and apical meristems.
- Taxon
- appleMalus domesticae0
- Treatment
- Whole tree sprays of 37 g/l ammonium thiosulphatee1
- Outcome
- severely scorched blossoms, foliage, and apical meristemse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e1“Whole tree sprays of 37 g/l ammonium thiosulphate over‐thinned ‘Cox's Orange Pippin’ blossoms”
e2“severely scorched blossoms, foliage, and apical meristems”
Claim · model-written summary
Ethephon at 0.35 g/l over-thinned apple blossoms.
- Taxon
- appleMalus domesticae0
- Treatment
- Ethephon at 0.35 g/le3
- Outcome
- over‐thinnede3
- Direction
- over‐thinnede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e3“Ethephon at 0.35 g/l also over‐thinned, and NAA thinned to an intermediate extent when compared with the controls”
Claim · model-written summary
NAA thinned apple blossoms to an intermediate extent compared with the controls.
- Taxon
- appleMalus domesticae0
- Treatment
- NAAe3
- Outcome
- thinnede3
- Direction
- thinnede3
- Qualifier
- to an intermediate extente3
- Comparator
- controlse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e3“Ethephon at 0.35 g/l also over‐thinned, and NAA thinned to an intermediate extent when compared with the controls”
Claim · model-written summary
Brush application of 3.7 g/l ammonium thiosulphate to stamens and styles of Braeburn blossoms reduced initial fruit set to 30% of untreated blossoms.
- Taxon
- appleMalus domesticae0
- Material
- Braeburne5
- Organ / stage
- stamens and stylese5
- Treatment
- 3.7 g/l ammonium thiosulphatee5
- Outcome
- initial fruit sete5
- Direction
- lowere5
- Value
- 30%e5
- Comparator
- untreated blossomse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e5“When the lower concentration of 3.7 g/l ammonium thiosulphate was directly applied to stamens and styles of ‘Braeburn’ blossoms by brush, initial fruit set was only 30% that of untreated blossoms”
Claim · model-written summary
Brush application of 0.35 g/l ethephon to spur leaves or petals of Braeburn blossoms at pink bud reduced initial fruit set to 23% of untreated blossoms.
- Taxon
- appleMalus domesticae0
- Material
- Braeburne6
- Organ / stage
- spur leaves or petalse6
- Treatment
- 0.35 g/l ethephone6
- Outcome
- initial fruit sete6
- Direction
- lowerinferrede6
- Value
- 23%e6
- Qualifier
- at pink bude6
- Comparator
- untreated blossomse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e6“When 0.35 g/l ethephon was directly applied by brush to spur leaves or petals of ‘Braeburn’ blossoms at pink bud, initial fruit set was only 23% that of untreated blossoms”
Claim · model-written summary
Ammonium thiosulphate has the potential to thin apple blossoms.
- Taxon
- appleMalus domesticae0
- Treatment
- ammonium thiosulphatee7
- Outcome
- thin apple blossomse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using ammonium thiosulphate as a chemical thinning agent for apple”
e7“It is concluded that ammonium thiosulphate has the potential to thin apple blossoms”
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See all 25 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.