Abstract
Benzyladenine (100 or 200 mg.litre -1 ) was applied to mature Empire/M.26 apple trees as dilute sprays 2, 4, 9, 11, 13, 15, 17, 20, 25, 27, 29 or 31 days after full bloom (DAFB). The most effective time of thinning was 25-29 DAFB (king fruit diameter 8.94-13.91 mm), and the thinning response to BA concentration was linear. Benzyladenine (BA) did not reduce fruit set when king fruit diameter was less than 5.35 mm, but BA significantly increased fruit weight, diameter (D), length (L) and L:D ratio compared to unsprayed controls and later BA treatments. BA - treated fruitlets had higher ethylene production, 24 hours and 7 days after spraying compared to untreated controls. We suggest that the response of apple fruitlets to BA applied as a thinner is mediated by ethylene. High fruit quality was obtained when BA was applied at 17-31 DAFB. Timing of BA sprays had no effect on seed number, though BA significantly increased seed number, fruit size, weight and L:D ratio. These results suggest that BA has the potential to substitute for the use of carbaryl as a thinner of apples in Ontario orchards.
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Claims 11
Claim · model-written summary
Thinning was most effective at 25-29 days after full bloom.
- Taxon
- Apple
Malus domesticat0 - Outcome
- most effective time of thinninge0
- Value
- 25-29 DAFBe0
- Qualifier
- king fruit diameter 8.94-13.91 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most effective time of thinning was 25-29 DAFB (king fruit diameter 8.94-13.91 mm)”
t0“Apple”
Claim · model-written summary
Thinning response increased linearly with BA concentration.
- Taxon
- AppleMalus domesticat0
- Treatment
- BA concentratione0
- Outcome
- thinning responsee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the thinning response to BA concentration was linear”
t0“Apple”
Claim · model-written summary
BA did not reduce fruit set when king fruit diameter was below 5.35 mm.
- Taxon
- AppleMalus domesticat0
- Treatment
- Benzyladenine (BA)e0
- Outcome
- fruit sete0
- Direction
- did not reducee0
- Qualifier
- king fruit diameter was less than 5.35 mme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Benzyladenine (BA) did not reduce fruit set when king fruit diameter was less than 5.35 mm”
t0“Apple”
Claim · model-written summary
BA increased fruit weight, diameter, length and L:D ratio compared with controls and later treatments.
- Taxon
- AppleMalus domesticat0
- Treatment
- BAe0
- Outcome
- fruit weight, diameter (D), length (L) and L:D ratioe0
- Direction
- increasede0
- Comparator
- unsprayed controls and later BA treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA significantly increased fruit weight, diameter (D), length (L) and L:D ratio compared to unsprayed controls and later BA treatments”
t0“Apple”
Claim · model-written summary
BA treated fruitlets produced more ethylene at 24 hours and 7 days than untreated controls.
- Taxon
- AppleMalus domesticat0
- Treatment
- BA - treatede0
- Outcome
- ethylene productione0
- Direction
- highere0
- Qualifier
- 24 hours and 7 days after sprayinge0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA - treated fruitlets had higher ethylene production, 24 hours and 7 days after spraying compared to untreated controls”
t0“Apple”
Claim · model-written summary
The authors suggest ethylene mediates the fruitlet response to BA thinning.
- Taxon
- appleMalus domesticae0
- Treatment
- BA applied as a thinnere0
- Compound
- ethylenee0
- Outcome
- response of apple fruitlets to BAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We suggest that the response of apple fruitlets to BA applied as a thinner is mediated by ethylene”
Claim · model-written summary
BA applied at 17-31 DAFB gave high fruit quality.
- Taxon
- AppleMalus domesticat0
- Treatment
- BAe0
- Outcome
- High fruit qualitye0
- Qualifier
- 17-31 DAFBe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High fruit quality was obtained when BA was applied at 17-31 DAFB”
t0“Apple”
Claim · model-written summary
Timing of BA sprays had no effect on seed number.
- Taxon
- AppleMalus domesticat0
- Treatment
- Timing of BA sprayse0
- Outcome
- seed numbere0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Timing of BA sprays had no effect on seed number”
t0“Apple”
Claim · model-written summary
BA significantly increased seed number.
- Taxon
- AppleMalus domesticat0
- Treatment
- BAe0
- Outcome
- seed numbere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA significantly increased seed number, fruit size, weight and L:D ratio”
t0“Apple”
Claim · model-written summary
BA significantly increased fruit size, weight and L:D ratio.
- Taxon
- AppleMalus domesticat0
- Treatment
- BAe0
- Outcome
- fruit size, weight and L:D ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA significantly increased seed number, fruit size, weight and L:D ratio”
t0“Apple”
Claim · model-written summary
The authors suggest BA could substitute for carbaryl as an apple thinner in Ontario orchards.
- Taxon
- applesMalus domesticae0
- Outcome
- substitute for the use of carbaryl as a thinnere0
- Setting
- Ontario orchardse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA has the potential to substitute for the use of carbaryl as a thinner of apples in Ontario orchards”
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See all 141 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.