Abstract
Ethrel [(2-chloroethyl)phosphonic acid] was applied at 0, 100 or 200 ppm (mg·L -1 ) for 3 years to the early maturing `Empress' peach [ Prunus persica (L.) Batsch] to determine if bloom delay by Ethrel reduces fruit weight at harvest. Trees were hand thinned at 0 or 3 weeks after full bloom to equalize cropload across Ethrel treatments and to determine if any reduction in fruit weight by Ethrel can be compensated by harvest with earlier thinning. Ethrel at 200 ppm (mg·L -1 ) delayed bloom by 3, 0, and 7 days in 1994, 1996 and 1997, respectively. Despite bloom delay, Ethrel did not delay harvest or reduce fruit weight. Thus, earlier hand thinning was not necessary. Ethrel did not affect blossom density and was not phytotoxic to vegetative or reproductive organs. These results indicate that even with the shorter fruit growth period of early maturing peach cultivars such as `Empress', there is sufficient time for fruit growth to recover on Ethrel treated trees so that fruit weight at harvest is not reduced.
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Claims 9
Claim · model-written summary
Ethrel at 200 ppm delayed bloom 3 days in 1994.
- Taxon
- peach
Prunus persicat0 - Treatment
- Ethrel at 200 ppm (mg·L -1 )e0
- Outcome
- bloome0
- Direction
- delayede0
- Value
- 3e0
- Qualifier
- 1994e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethrel at 200 ppm (mg·L -1 ) delayed bloom by 3, 0, and 7 days in 1994, 1996 and 1997, respectively.”
t0“Peach”
Claim · model-written summary
Ethrel at 200 ppm caused zero bloom delay in 1996.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrel at 200 ppm (mg·L -1 )e0
- Outcome
- bloome0
- Direction
- delayede0
- Value
- 0e0
- Qualifier
- 1996e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethrel at 200 ppm (mg·L -1 ) delayed bloom by 3, 0, and 7 days in 1994, 1996 and 1997, respectively.”
t0“Peach”
Claim · model-written summary
Ethrel at 200 ppm delayed bloom 7 days in 1997.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrel at 200 ppm (mg·L -1 )e0
- Outcome
- bloome0
- Direction
- delayede0
- Value
- 7 dayse0
- Qualifier
- 1997e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethrel at 200 ppm (mg·L -1 ) delayed bloom by 3, 0, and 7 days in 1994, 1996 and 1997, respectively.”
t0“Peach”
Claim · model-written summary
Ethrel did not delay harvest.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrele0
- Outcome
- harveste0
- Direction
- did not delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Despite bloom delay, Ethrel did not delay harvest or reduce fruit weight.”
t0“Peach”
Claim · model-written summary
Ethrel did not reduce fruit weight.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrele0
- Outcome
- fruit weighte0
- Direction
- did not delay harvest or reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Despite bloom delay, Ethrel did not delay harvest or reduce fruit weight.”
t0“Peach”
Claim · model-written summary
Earlier hand thinning was unnecessary.
- Taxon
- peachPrunus persicat0
- Outcome
- earlier hand thinning was not necessarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thus, earlier hand thinning was not necessary.”
t0“Peach”
Claim · model-written summary
Ethrel did not affect blossom density.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrele0
- Outcome
- blossom densitye0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethrel did not affect blossom density and was not phytotoxic to vegetative or reproductive organs.”
t0“Peach”
Claim · model-written summary
Ethrel was not phytotoxic to vegetative or reproductive organs.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrele0
- Outcome
- phytotoxic to vegetative or reproductive organse0
- Direction
- not phytotoxice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethrel did not affect blossom density and was not phytotoxic to vegetative or reproductive organs.”
t0“Peach”
Claim · model-written summary
Authors interpret fruit growth as able to recover after Ethrel treatment even in early maturing peach.
- Taxon
- peachPrunus persicat0
- Treatment
- Ethrele0
- Outcome
- fruit growth to recovere0
- Qualifier
- sufficient timee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is sufficient time for fruit growth to recover on Ethrel treated trees so that fruit weight at harvest is not reduced.”
t0“Peach”
The same questions in other papers
(2-chloroethyl)phosphonic acid · yield · Prunus persica (peach)Results differ
8 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- negative
13 papers more in this group
See all 17 papers →(2-chloroethyl)phosphonic acid · crop injury · Prunus persica (peach)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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.