Abstract
Abstract Ethephon [2‐(chloroethyl) phosphonic acid] has improved lodging resistance of several crops, mainly by reducing plant height. Our objective was to determine if ethephon could reduce plant height of soybean [ Glycine max (L.) Merr.] without reducing lowest pod height (LPH), which would increase the potential for stubble harvest losses. Maturity group IV soybean cultivars Ripley (short) and Southern States 443 (tall) were planted in both full season and late‐planted cropping systems in 1987 and 1988 on a Maury silt loam (fine, mixed, mesic Typic Paleudalfs) near Lexington, KY. Ethephon was applied at 280 g a.i. ha −1 at growth stages V4, V6, or V4 and V6. All three ethephon treatments reduced plant height to a similar degree. No ethephon effect on lodging was detected, since lodging pressure was minimal. Ethephon did not reduce LPH, and thus had no effect on stubble harvest losses. In addition, ethephon did not influence grain yield. Ethephon successfully reduced plant height without increasing stubble harvest losses. No conclusion on the effect of ethephon on lodging resistance of soybean can be drawn from this research.
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Claims 5
Claim · model-written summary
Each ethephon timing reduced soybean plant height similarly.
- Taxon
- soybean
Glycine maxe1 - Treatment
- Ethephone0
- Outcome
- plant heighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon was applied at 280 g a.i. ha −1 at growth stages V4, V6, or V4 and V6. All three ethephon treatments reduced plant height to a similar degree.”
e1“soybean [ Glycine max (L.) Merr.]”
Claim · model-written summary
No ethephon effect on soybean lodging was detected under minimal lodging pressure.
- Taxon
- soybeanGlycine maxe1
- Treatment
- ethephone0
- Outcome
- lodginge0
- Direction
- No ethephon effecte0
- Qualifier
- lodging pressure was minimale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No ethephon effect on lodging was detected, since lodging pressure was minimal.”
e1“soybean [ Glycine max (L.) Merr.]”
Claim · model-written summary
Ethephon did not reduce soybean lowest pod height.
- Taxon
- soybeanGlycine maxe2
- Treatment
- Ethephone0
- Outcome
- LPHe0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon did not reduce LPH, and thus had no effect on stubble harvest losses.”
e1“lowest pod height (LPH)”
e2“soybean [ Glycine max (L.) Merr.]”
Claim · model-written summary
Ethephon had no effect on soybean stubble harvest losses.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Ethephone0
- Outcome
- stubble harvest lossese0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon did not reduce LPH, and thus had no effect on stubble harvest losses.”
e1“soybean [ Glycine max (L.) Merr.]”
Claim · model-written summary
Ethephon did not influence soybean grain yield.
- Taxon
- soybeanGlycine maxe1
- Treatment
- ethephone0
- Outcome
- grain yielde0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In addition, ethephon did not influence grain yield.”
e1“soybean [ Glycine max (L.) Merr.]”
The same questions in other papers
(2-chloroethyl)phosphonic acid · growth · Glycine max (soybean)Results differ
6 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 papers →(2-chloroethyl)phosphonic acid · yield · Glycine max (soybean)Results differ
6 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 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.