Abstract
SummaryFour year old `Bing' sweet cherry trees planted at a density of ca. 1500 trees per ha were treated once with paclobutrazol (Cultar) applied as soil drench (SD) where 1 l of paclobutrazol aqueous solution was poured into a furrow around the tree trunk, or applied as a row-side drench (RSD) where 1 l of paclobutrazol solution was divided into two doses of 0.5 l and poured into two furrows located on both edges of the herbicide strip, or a bark painting application (BP) where a 20 cm wide tree bark band was brush-painted with paclobutrazol dissolved in 100% `Surfactant WK'. A standard rate 15 mg paclobutrazol per cm2 of tree trunk cross-sectional area was applied in all three cases. The SD and RSD trees showed signs of shoot growth inhibition 69 d after application, about 12 d before some inhibition was seen on the BP trees. Fruit set was reduced by both the SD and RSD but not by the BP. Yields were not influenced by paclobutrazol in the application year. The highest two-year cumulative yields were obtained from the BP, followed by the control, RSD and SD. Fruit quality (mass, diameter, firmness and soluble-solids content) was not adversely affected by the treatments. Treated trees tended to produce significantly larger fruit than the untreated control. Bio-assay with broad beans, performed 20 months after paclobutrazol application, showed that growth of the indicator plants grown in soil taken from the application treatments was reduced to 70.5, 56.1 and 23.6% of control for the BP, RSD and SD, respectively. Efficient growth control and cropping, considerable reduction of paclobutrazol residue in the soil, and thus limiting its environmental impact, makes bark application worth considering for use in sweet cherry high-density plantings.
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Claims 11
Claim · model-written summary
Soil and row-side drenches inhibited shoot growth by 69 days, earlier than bark painting.
- Taxon
- sweet cherry
Prunus aviumt0 - Treatment
- SD and RSDe0
- Outcome
- shoot growth inhibitione0
- Direction
- inhibitione0
- Value
- 69 de0
- Qualifier
- about 12 d beforee0
- Comparator
- BPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SD and RSD trees showed signs of shoot growth inhibition 69 d after application, about 12 d before some inhibition was seen on the BP trees.”
t0“sweet cherry”
Claim · model-written summary
Soil and row-side drenches reduced fruit set.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- SD and RSDe0
- Outcome
- Fruit sete0
- Direction
- reducede0
- Comparator
- BPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit set was reduced by both the SD and RSD but not by the BP.”
t0“sweet cherry”
Claim · model-written summary
Bark painting did not reduce fruit set.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- BPe0
- Outcome
- Fruit sete0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit set was reduced by both the SD and RSD but not by the BP.”
t0“sweet cherry”
Claim · model-written summary
Paclobutrazol did not influence yield in the application year.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- paclobutrazole0
- Outcome
- Yieldse0
- Direction
- not influencede0
- Qualifier
- in the application yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were not influenced by paclobutrazol in the application year.”
t0“sweet cherry”
Claim · model-written summary
Two-year cumulative yield ranked bark painting highest, then control, row-side drench, and soil drench.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- BPe0
- Outcome
- two-year cumulative yieldse0
- Direction
- higheste0
- Comparator
- control, RSD and SDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest two-year cumulative yields were obtained from the BP, followed by the control, RSD and SD.”
t0“sweet cherry”
Claim · model-written summary
Treatments did not adversely affect fruit quality.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- treatmentse0
- Outcome
- Fruit quality (mass, diameter, firmness and soluble-solids content)e0
- Direction
- not adversely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit quality (mass, diameter, firmness and soluble-solids content) was not adversely affected by the treatments.”
t0“sweet cherry”
Claim · model-written summary
Treated trees tended to produce significantly larger fruit than untreated controls.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- Treated treese0
- Outcome
- fruite0
- Direction
- largere0
- Qualifier
- tendede0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treated trees tended to produce significantly larger fruit than the untreated control.”
t0“sweet cherry”
Claim · model-written summary
Broad bean bioassay growth in bark-painted soil was 70.5% of control.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- BPe0
- Outcome
- growth of the indicator plantse0
- Direction
- reducede0
- Value
- 70.5e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of the indicator plants grown in soil taken from the application treatments was reduced to 70.5, 56.1 and 23.6% of control for the BP, RSD and SD, respectively.”
t0“sweet cherry”
Claim · model-written summary
Broad bean bioassay growth in row-side drench soil was 56.1% of control.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- RSDe0
- Outcome
- growth of the indicator plantse0
- Direction
- reducede0
- Value
- 56.1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of the indicator plants grown in soil taken from the application treatments was reduced to 70.5, 56.1 and 23.6% of control for the BP, RSD and SD, respectively.”
t0“sweet cherry”
Claim · model-written summary
Broad bean bioassay growth in soil-drenched soil was 23.6% of control.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- SDe0
- Outcome
- growth of the indicator plantse0
- Direction
- reducede0
- Value
- 23.6%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of the indicator plants grown in soil taken from the application treatments was reduced to 70.5, 56.1 and 23.6% of control for the BP, RSD and SD, respectively.”
t0“sweet cherry”
Claim · model-written summary
Authors recommend considering bark application in high-density cherry plantings.
- Taxon
- sweet cherryPrunus aviume0
- Outcome
- bark application worth considering for use in sweet cherry high-density plantingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“makes bark application worth considering for use in sweet cherry high-density plantings.”
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