Abstract
Abstract Eight-year-old ‘Cresthaven’ peach ( Prunus persica L. Batsch.) were sprayed to runoff in mid-October with ethephon and Dormex, two potential bloom-delaying compounds. Flower buds were evaluated for differences in hardiness after field exposure to < −23°C for 4 hr in Jan. 1987. Buds treated with ethephon were significantly hardier than control buds or buds treated with Dormex. Controlled freezing tests just before bloom, continuing through full bloom, indicated the same difference. In addition, ethephon-treated buds had an estimated LT 50 of −1.6° at full bloom compared to an estimated LT 50 <0°, but greater than −0.5° for controls. Ethephon-treated buds also attained full bloom ≈7 days later than control buds. Yield also was enhanced by ethephon compared to all other treatments. Results confirm the bloom-delaying phenomenon associated with fall ethephon application and also indicate that ethephon increases the intrinsic hardiness of peach flower buds when applied in the fall. Chemical names used: (2-chloroethyl) phosphonic acid (ethephon); calcium cyanamid (Dormex).
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Ethephon treated buds were significantly hardier than controls or Dormex treated buds.
- Taxon
- peach
Prunus persicat0 - Treatment
- ethephone0
- Outcome
- hardiere0
- Direction
- hardiere0
- Comparator
- control buds or buds treated with Dormexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Buds treated with ethephon were significantly hardier than control buds or buds treated with Dormex.”
t0“Peach”
Claim · model-written summary
Ethephon treated buds had an estimated full bloom LT50 of −1.6°.
- Taxon
- peachPrunus persicat0
- Treatment
- ethephone0
- Outcome
- LT 50e0
- Value
- −1.6°e0
- Qualifier
- at full bloome0
- Comparator
- controlse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon-treated buds had an estimated LT 50 of −1.6° at full bloom compared to an estimated LT 50 <0°, but greater than −0.5° for controls.”
t0“Peach”
Claim · model-written summary
Ethephon delayed full bloom by approximately seven days relative to controls.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethephone0
- Outcome
- full bloome0
- Direction
- latere0
- Value
- ≈7 dayse0
- Comparator
- control budse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon-treated buds also attained full bloom ≈7 days later than control buds.”
t0“Peach”
Claim · model-written summary
Ethephon enhanced yield relative to other treatments.
- Taxon
- peachPrunus persicat0
- Treatment
- ethephone0
- Outcome
- Yielde0
- Direction
- enhancede0
- Comparator
- all other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield also was enhanced by ethephon compared to all other treatments.”
t0“Peach”
The same questions in other papers
(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
- no effect
- positive
- positive
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.