Abstract
Ethephon was applied at 100 mg·liter -1 to peach [ Prunus persica (L.) Batsch., cvs. Jerseydawn and Cresthaven] trees in Oct. 1987 and 1988 to increase flower bud hardiness and delay bloom the following spring. Flower bud survival after exposure to -26C in Jan. 1988 was enhanced with fall ethephon application in both cultivars. Ethephon delayed bloom by 7 (1988) and 3 (1989) days in `Jerseydawn' and by 10 (1988) and 4 (1989) days in `Cresthaven'. Total fruit production per tree for `Jersey-dawn' was not affected by ethephon treatment in 1988; however, yield was enhanced with ethephon treatment in 1989. For `Cresthaven', yield was enhanced by ethephon treatment in both years. Most fruit from the untreated trees were harvested on the first harvest dates and were in the largest size categories, while most fruit from the treated trees were harvested on the last harvest dates and were in the smaller size categories both years in both cultivars. Smaller pistils and heavier prethinning crop loads lead to smaller fruit and a later harvest date. Chemical names used: 2-chloroethylphosphonic acid (ethephon).
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Claims 8
Claim · model-written summary
Fall ethephon enhanced flower bud survival after −26C exposure in both peach cultivars.
- Taxon
- Peach
Prunus persicat0 - Treatment
- fall ethephon applicatione0
- Outcome
- Flower bud survivale0
- Direction
- enhancede0
- Qualifier
- -26Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flower bud survival after exposure to -26C in Jan. 1988 was enhanced with fall ethephon application in both cultivars.”
t0“Peach Fruit”
Claim · model-written summary
Ethephon delayed Jerseydawn bloom by 7 days in 1988 and 3 days in 1989.
- Taxon
- PeachPrunus persicat0
- Material
- Jerseydawne0
- Treatment
- Ethephone0
- Outcome
- bloome0
- Direction
- delayede0
- Value
- 7 (1988) and 3 (1989) dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon delayed bloom by 7 (1988) and 3 (1989) days in `Jerseydawn'”
t0“Peach Fruit”
Claim · model-written summary
Ethephon delayed Cresthaven bloom by 10 days in 1988 and 4 days in 1989.
- Taxon
- PeachPrunus persicat0
- Material
- Cresthavene0
- Treatment
- Ethephone0
- Outcome
- bloome0
- Direction
- delayede0
- Value
- 10 (1988) and 4 (1989) dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon delayed bloom by 7 (1988) and 3 (1989) days in `Jerseydawn' and by 10 (1988) and 4 (1989) days in `Cresthaven'”
t0“Peach Fruit”
Claim · model-written summary
Ethephon did not affect Jerseydawn fruit production in 1988.
- Taxon
- PeachPrunus persicat0
- Material
- Jersey-dawne0
- Treatment
- ethephon treatmente0
- Outcome
- Total fruit production per treee0
- Direction
- not affectede0
- Qualifier
- 1988e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total fruit production per tree for `Jersey-dawn' was not affected by ethephon treatment in 1988”
t0“Peach Fruit”
Claim · model-written summary
Ethephon enhanced Jerseydawn yield in 1989.
- Taxon
- PeachPrunus persicat0
- Material
- Jersey-dawne1
- Treatment
- ethephon treatmente0
- Outcome
- yielde0
- Direction
- enhancede0
- Qualifier
- 1989e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield was enhanced with ethephon treatment in 1989”
e1“`Jersey-dawn'”
t0“Peach Fruit”
Claim · model-written summary
Ethephon enhanced Cresthaven yield in both years.
- Taxon
- PeachPrunus persicat0
- Material
- Cresthavene0
- Treatment
- ethephon treatmente0
- Outcome
- yielde0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For `Cresthaven', yield was enhanced by ethephon treatment in both years.”
t0“Peach Fruit”
Claim · model-written summary
Treated trees had later harvest dates and smaller fruit size categories than untreated trees in both cultivars and years.
- Taxon
- PeachPrunus persicat0
- Treatment
- Fall-applied Ethephont0
- Outcome
- harvest datese0
- Direction
- smallere0
- Comparator
- untreated treese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most fruit from the untreated trees were harvested on the first harvest dates and were in the largest size categories, while most fruit from the treated trees were harvested on the last harvest dates and were in the smaller size categories both years in both cultivars.”
t0“Peach Fruit Are Altered with Fall-applied Ethephon”
Claim · model-written summary
Smaller pistils and heavier prethinning crop loads led to smaller fruit and a later harvest date.
- Taxon
- PeachPrunus persicat0
- Organ / stage
- pistilse0
- Outcome
- smaller fruit and a later harvest datee0
- Qualifier
- heavier prethinning crop loadse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Smaller pistils and heavier prethinning crop loads lead to smaller fruit and a later harvest date.”
t0“Peach Fruit”
The same questions in other papers
(2-chloroethyl)phosphonic acid · survival · Prunus persica (peach)Results differ
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
(2-chloroethyl)phosphonic acid · yield · Prunus persica (peach)Results differ
7 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- negative
13 papers more in this group
See all 17 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.