Abstract
Abstract Late-winter application of 5000 ppm (2-chloroethyl)phosphonic acid (ethephon) to fall-seeded short- day onions ( Allium cepa L.) retarded leaf growth and inhibited bolting. Bolting inhibition was significantly correlated with bulb diameter at time of treatment. Bolting inhibition was greatest when bulb diameter was 0.9 to 1.6 cm at time of treatment. Bulb diameter in late February or early March was an effective criterion for the effectiveness of ethephon treatment to reduce bolting. When ethephon treatments greatly reduced bolting, the number of harvestable bulbs and yields were increased, but when bolting percentage in control plots was low, ethephon reduced yield by decreasing average bulb weight at harvest.
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Claims 8
Claim · model-written summary
Late-winter ethephon retarded onion leaf growth.
- Taxon
- Allium cepa L.
Allium cepae0 - Organ / stage
- leafe0
- Treatment
- 5000 ppm (2-chloroethyl)phosphonic acid (ethephon)e0
- Outcome
- leaf growthe0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late-winter application of 5000 ppm (2-chloroethyl)phosphonic acid (ethephon) to fall-seeded short- day onions ( Allium cepa L.) retarded leaf growth and inhibited bolting”
Claim · model-written summary
Late-winter ethephon inhibited onion bolting.
- Taxon
- Allium cepa L.Allium cepae0
- Treatment
- 5000 ppm (2-chloroethyl)phosphonic acid (ethephon)e0
- Outcome
- boltinge0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Late-winter application of 5000 ppm (2-chloroethyl)phosphonic acid (ethephon) to fall-seeded short- day onions ( Allium cepa L.) retarded leaf growth and inhibited bolting”
Claim · model-written summary
Bolting inhibition correlated significantly with bulb diameter at treatment.
- Taxon
- OnionAllium cepat0
- Organ / stage
- bulb diameter at time of treatmente0
- Outcome
- Bolting inhibitione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bolting inhibition was significantly correlated with bulb diameter at time of treatment”
t0“Onion”
Claim · model-written summary
Bolting inhibition was greatest for bulb diameters of 0.9 to 1.6 cm.
- Taxon
- OnionAllium cepat0
- Organ / stage
- bulb diametere0
- Outcome
- Bolting inhibitione0
- Direction
- greateste0
- Value
- 0.9 to 1.6 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bolting inhibition was greatest when bulb diameter was 0.9 to 1.6 cm at time of treatment”
t0“Onion”
Claim · model-written summary
Bulb diameter in late February or early March effectively predicted ethephon bolting reduction.
- Taxon
- OnionAllium cepat0
- Outcome
- effective criterion for the effectiveness of ethephon treatment to reduce boltinge0
- Qualifier
- Bulb diameter in late February or early Marche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bulb diameter in late February or early March was an effective criterion for the effectiveness of ethephon treatment to reduce bolting”
t0“Onion”
Claim · model-written summary
When bolting was greatly reduced, ethephon increased harvestable bulb number and yields.
- Taxon
- OnionAllium cepat0
- Treatment
- ethephon treatmentse0
- Outcome
- number of harvestable bulbs and yieldse0
- Direction
- increasede0
- Qualifier
- When ethephon treatments greatly reduced boltinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When ethephon treatments greatly reduced bolting, the number of harvestable bulbs and yields were increased”
t0“Onion”
Claim · model-written summary
When control bolting was low, ethephon decreased yield through lower average bulb weight.
- Taxon
- OnionAllium cepat0
- Treatment
- ethephone0
- Outcome
- yielde0
- Direction
- reducede0
- Qualifier
- when bolting percentage in control plots was lowe0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when bolting percentage in control plots was low, ethephon reduced yield by decreasing average bulb weight at harvest”
t0“Onion”
Claim · model-written summary
Ethephon lowered average bulb weight at harvest when control bolting was low.
- Taxon
- OnionAllium cepat0
- Treatment
- ethephone0
- Outcome
- average bulb weight at harveste0
- Direction
- decreasinge0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when bolting percentage in control plots was low, ethephon reduced yield by decreasing average bulb weight at harvest”
t0“Onion”
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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.