Abstract
The aim of this study was to evaluate the phytotoxicity and the thinning efficacy of ammonium thiosulfate (ATS) and of 6-benzyladenine (BA). In 2007 and in 2008, ATS was applied twice at a concentration of 1.3% (w/v) on the cultivars Orangered, Kioto, Robada, Goldrich, Bergeron, Harostar and Bergarouge. Benzyladenine was applied in 2007 at the end of the blossom and 25 days after at a concentration of 0.75% (v/v) on the cultivars Orangered, Bergarouge and on the hybrid FG4353, and one application was performed in 2008 on Harostar and Bergarouge. No phytotoxicity was induced by these applications independently of the cultivar. Benzyladenine and ATS treated trees exhibited an enhanced fruit drop. A reduction of 50% to 20% using BA and of 65% to 20% using ATS was observed in the number of fruits per linear meter relatively to the untreated plants. Fruit size was enhanced using ATS but, surprisingly, not for BA-treated trees. These results are promising in order to regulate crop load of apricot cultivars. The reasonability of chemical thinning in apricot is discussed, with respect to fruit size, cultivar differences, phenological stage and number of applications, as well as to climatic, technical and economic aspects.
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Claims 7
Claim · model-written summary
The ATS and BA applications did not induce phytotoxicity across cultivars.
- Taxon
- APRICOT
Prunus armeniacat0 - Treatment
- these applicationse0
- Outcome
- phytotoxicitye0
- Direction
- Noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No phytotoxicity was induced by these applications independently of the cultivar.”
t0“APRICOT CULTIVARS”
Claim · model-written summary
Benzyladenine treatment enhanced apricot fruit drop.
- Taxon
- APRICOTPrunus armeniacat0
- Treatment
- Benzyladeninee0
- Outcome
- fruit drope0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Benzyladenine and ATS treated trees exhibited an enhanced fruit drop.”
t0“APRICOT CULTIVARS”
Claim · model-written summary
ATS treatment enhanced apricot fruit drop.
- Taxon
- APRICOTPrunus armeniacat0
- Treatment
- ATSe0
- Outcome
- fruit drope0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Benzyladenine and ATS treated trees exhibited an enhanced fruit drop.”
t0“APRICOT CULTIVARS”
Claim · model-written summary
BA reduced fruit number per linear meter by 50% to 20% relative to untreated plants.
- Taxon
- APRICOTPrunus armeniacat0
- Treatment
- BAe0
- Outcome
- number of fruits per linear metere0
- Direction
- reductione0
- Value
- 50% to 20%e0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A reduction of 50% to 20% using BA and of 65% to 20% using ATS was observed in the number of fruits per linear meter relatively to the untreated plants.”
t0“APRICOT CULTIVARS”
Claim · model-written summary
ATS reduced fruit number per linear meter by 65% to 20% relative to untreated plants.
- Taxon
- APRICOTPrunus armeniacat0
- Treatment
- ATSe0
- Outcome
- number of fruits per linear metere0
- Direction
- reductione0
- Value
- 65% to 20%e0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A reduction of 50% to 20% using BA and of 65% to 20% using ATS was observed in the number of fruits per linear meter relatively to the untreated plants.”
t0“APRICOT CULTIVARS”
Claim · model-written summary
ATS enhanced apricot fruit size.
- Taxon
- APRICOTPrunus armeniacat0
- Treatment
- ATSe0
- Outcome
- Fruit sizee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit size was enhanced using ATS”
t0“APRICOT CULTIVARS”
Claim · model-written summary
BA did not enhance apricot fruit size.
- Taxon
- APRICOTPrunus armeniacat0
- Treatment
- BA-treatede0
- Outcome
- Fruit sizee0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit size was enhanced using ATS but, surprisingly, not for BA-treated trees.”
t0“APRICOT CULTIVARS”
The same questions in other papers
N-benzyladenine · yield · Prunus armeniaca (apricot)Positive and negative results
1 in the opposite direction
- no effect
ammonium thiosulfate · yield · Prunus armeniaca (apricot)Results agree
1 paper in the same direction as this paper
- positive
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.