Abstract
Trials in southern Tasmania examined the thinning effects of ethephon on ‘Gala’ and ‘Jonagold’ apples. Untreated controls were compared with ethephon thinning sprays applied at full bloom at 50,100,200,400,800 and 1 600 mg I“1 to both cultivars. Thinning of both cultivars was related to the concentration of the spray and in most cases logistic models were fitted. Thinning effectiveness was largely reflected in increased fruit weight and size. The ‘Gala’ fruit was still not large enough for Australian markets. Ethephon at 200 mg I“1 effectively thinned ‘Jonagold’ and produced the required increases in fruit size and weight. ‘Jonagold’ was overthinned by the high concentrations of ethephon, but this was not reflected in increased fruit weight and size. Ethephon also reduced vegetative growth at the higher concentrations which was considered an advantage. More work is required to establish specific recommendations for either cultivar.
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Claims 9
Claim · model-written summary
Thinning in Gala varied with ethephon spray concentration.
- Taxon
- apples
Malus domesticat0 - Material
- ‘Gala’t0
- Treatment
- concentration of the spraye0
- Outcome
- Thinninge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thinning of both cultivars was related to the concentration of the spray”
t0“‘Gala’ and ‘Jonagold’ apples”
Claim · model-written summary
Thinning in Jonagold varied with ethephon spray concentration.
- Taxon
- applesMalus domesticat0
- Material
- ‘Jonagold’t0
- Treatment
- concentration of the spraye0
- Outcome
- Thinninge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thinning of both cultivars was related to the concentration of the spray”
t0“‘Gala’ and ‘Jonagold’ apples”
Claim · model-written summary
Thinning was generally associated with increased fruit weight and size.
- Taxon
- applesMalus domesticat0
- Treatment
- Thinninge0
- Outcome
- fruit weight and sizee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thinning effectiveness was largely reflected in increased fruit weight and size.”
t0“apples”
Claim · model-written summary
Gala fruit remained too small for Australian markets.
- Taxon
- applesMalus domesticat0
- Material
- ‘Gala’e0
- Outcome
- not large enough for Australian marketse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ‘Gala’ fruit was still not large enough for Australian markets.”
t0“apples”
Claim · model-written summary
Ethephon at 200 mg I“1 effectively thinned Jonagold.
- Taxon
- applesMalus domesticat0
- Material
- ‘Jonagold’e0
- Treatment
- Ethephon at 200 mg I“1e0
- Outcome
- thinnede0
- Direction
- effectively thinnede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon at 200 mg I“1 effectively thinned ‘Jonagold’”
t0“apples”
Claim · model-written summary
Ethephon at 200 mg I“1 increased Jonagold fruit size and weight to required levels.
- Taxon
- applesMalus domesticat0
- Material
- ‘Jonagold’e0
- Treatment
- Ethephon at 200 mg I“1e0
- Outcome
- fruit size and weighte0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon at 200 mg I“1 effectively thinned ‘Jonagold’ and produced the required increases in fruit size and weight.”
t0“apples”
Claim · model-written summary
High ethephon concentrations overthinned Jonagold.
- Taxon
- applesMalus domesticat0
- Material
- ‘Jonagold’e0
- Treatment
- high concentrations of ethephone0
- Outcome
- overthinnede0
- Direction
- overthinnede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Jonagold’ was overthinned by the high concentrations of ethephon”
t0“apples”
Claim · model-written summary
High ethephon concentrations did not increase Jonagold fruit weight or size despite overthinning.
- Taxon
- applesMalus domesticat0
- Material
- ‘Jonagold’e0
- Treatment
- high concentrations of ethephone0
- Outcome
- fruit weight and sizee0
- Direction
- not reflected in increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Jonagold’ was overthinned by the high concentrations of ethephon, but this was not reflected in increased fruit weight and size.”
t0“apples”
Claim · model-written summary
Higher ethephon concentrations reduced vegetative growth.
- Taxon
- applesMalus domesticat0
- Treatment
- Ethephone0
- Outcome
- vegetative growthe0
- Direction
- reducede0
- Qualifier
- higher concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon also reduced vegetative growth at the higher concentrations”
t0“apples”
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See all 73 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.