Abstract
Abstract Fall and late-winter treatments of (2-chloroethyl)phosphonic acid (ethephon) at 2500 or 5000 ppm reduced bolting of fall-planted, short-day cultivars of onion ( Allium cepa L.). Ethephon inhibited plant growth and reduced bulb size. Ethephon reduced yields when bolting in control plots was low or when cool spring weather restricted growth. With warm spring weather and 18% bolting in control plots, ethephon reduced bolting to 3% with no effect on yield. Ethephon caused some winter plant loss in 1 of the 3 years. Loss was greatest when higher rates of ethephon were applied in the fall to very young plants.
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Claims 9
Claim · model-written summary
Fall and late winter ethephon reduced onion bolting.
- Taxon
- onion
Allium cepae0 - Treatment
- ethephon) at 2500 or 5000 ppme0
- Outcome
- boltinge0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fall and late-winter treatments of (2-chloroethyl)phosphonic acid (ethephon) at 2500 or 5000 ppm reduced bolting of fall-planted, short-day cultivars of onion ( Allium cepa L.)”
Claim · model-written summary
Ethephon inhibited onion plant growth.
- Taxon
- OnionsAllium cepat0
- Treatment
- Ethephone0
- Outcome
- plant growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon inhibited plant growth”
t0“Onions”
Claim · model-written summary
Ethephon reduced onion bulb size.
- Taxon
- OnionsAllium cepat0
- Treatment
- Ethephone0
- Outcome
- bulb sizee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon inhibited plant growth and reduced bulb size”
t0“Onions”
Claim · model-written summary
Ethephon reduced yield when control bolting was low.
- Taxon
- OnionsAllium cepat0
- Treatment
- Ethephone0
- Outcome
- yieldse0
- Direction
- reducede0
- Qualifier
- bolting in control plots was lowe0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon reduced yields when bolting in control plots was low”
t0“Onions”
Claim · model-written summary
Ethephon reduced yield when cool spring weather restricted growth.
- Taxon
- OnionsAllium cepat0
- Treatment
- Ethephone0
- Outcome
- yieldse0
- Direction
- reducede0
- Qualifier
- cool spring weather restricted growthe0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon reduced yields when bolting in control plots was low or when cool spring weather restricted growth”
t0“Onions”
Claim · model-written summary
With warm spring weather, ethephon reduced onion bolting from 18% to 3%.
- Taxon
- OnionsAllium cepat0
- Treatment
- ethephone0
- Outcome
- boltinge0
- Direction
- reducede0
- Value
- 3%e0
- Qualifier
- 18% boltinge0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With warm spring weather and 18% bolting in control plots, ethephon reduced bolting to 3%”
t0“Onions”
Claim · model-written summary
With warm spring weather, ethephon had no effect on onion yield.
- Taxon
- OnionsAllium cepat0
- Treatment
- ethephone0
- Outcome
- yielde0
- Direction
- no effecte0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With warm spring weather and 18% bolting in control plots, ethephon reduced bolting to 3% with no effect on yield”
t0“Onions”
Claim · model-written summary
Ethephon caused winter plant loss in one of three years.
- Taxon
- OnionsAllium cepat0
- Treatment
- Ethephone0
- Outcome
- winter plant losse0
- Value
- 1 of the 3 yearse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon caused some winter plant loss in 1 of the 3 years”
t0“Onions”
Claim · model-written summary
Winter plant loss was greatest after higher fall ethephon rates on very young plants.
- Taxon
- OnionsAllium cepat0
- Treatment
- higher rates of ethephone0
- Outcome
- Losse0
- Direction
- greateste0
- Qualifier
- in the fall to very young plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Loss was greatest when higher rates of ethephon were applied in the fall to very young plants”
t0“Onions”
The same questions in other papers
(2-chloroethyl)phosphonic acid · yield · Allium cepa (onion)Results differ
2 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →(2-chloroethyl)phosphonic acid · phenology · Allium cepa (onion)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
2 papers more in this group
See all 6 papers →(2-chloroethyl)phosphonic acid · growth · Allium cepa (onion)Positive and negative results
4 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
- positive
7 papers more in this group
See all 11 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.