Abstract
Experiments were conducted to determine the relative efficacy of ethephon, alone and in combination with chlormequat chloride (CCC) or mepiquat chloride (DPC), in reducing barley height and lodging in order to protect potential yield. The effects of timing and cultivar of barley were investigated. The results depended on both cultivar and year, indicating that both genetic and environmental factors are important. For Leger barley, application of ethephon between Zadoks Growth Stage (ZGS) 37 and 45 was effective in reducing plant height and lodging; CCC and DPC had no positive or negative effect when added to ethephon. CCC and DPC appeared to enhance the effects of ethephon on lodging control of Micmac barley especially when applied at ZGS 45. Rodeo barley showed the only detrimental effects to grain yield. Ethephon alone applied at ZGS 37 in 1986 caused significant yield loss. CCC or DPC reduced the detrimental effect of the ethephon by acting as apparent antagonists to its effects on this cultivar.Key words: Ethephon, CCC, DPC, lodging, barley
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Claims 9
Claim · model-written summary
Responses to the treatments depended on barley cultivar and year.
- Taxon
- BARLEY
.jpg?width=60)
Hordeum vulgaret0 - Material
- cultivare0
- Outcome
- resultse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The results depended on both cultivar and year”
t0“SPRING BARLEY”
Claim · model-written summary
Ethephon at ZGS 37–45 reduced Leger barley height and lodging.
- Taxon
- barleyHordeum vulgaree0
- Material
- Legere0
- Treatment
- application of ethephon between Zadoks Growth Stage (ZGS) 37 and 45e0
- Outcome
- plant height and lodginge0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Leger barley, application of ethephon between Zadoks Growth Stage (ZGS) 37 and 45 was effective in reducing plant height and lodging”
Claim · model-written summary
Adding CCC to ethephon had no positive or negative effect in Leger barley.
- Taxon
- BARLEYHordeum vulgaret0
- Material
- Legere1
- Treatment
- CCCe0
- Outcome
- effecte0
- Direction
- no positive or negative effecte0
- Comparator
- ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC and DPC had no positive or negative effect when added to ethephon”
t0“SPRING BARLEY”
e1“For Leger barley, application of ethephon between Zadoks Growth Stage (ZGS) 37 and 45 was effective in reducing plant height and lodging”
Claim · model-written summary
Adding DPC to ethephon had no positive or negative effect in Leger barley.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- DPCe0
- Outcome
- effecte0
- Direction
- no positive or negative effecte0
- Comparator
- ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC and DPC had no positive or negative effect when added to ethephon”
t0“SPRING BARLEY”
Claim · model-written summary
CCC appeared to enhance ethephon lodging control of Micmac barley, especially at ZGS 45.
- Taxon
- barleyHordeum vulgaree0
- Material
- Micmace0
- Treatment
- CCCe0
- Outcome
- lodging controle0
- Direction
- enhancee0
- Qualifier
- especially when applied at ZGS 45e0
- Comparator
- ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC and DPC appeared to enhance the effects of ethephon on lodging control of Micmac barley especially when applied at ZGS 45”
Claim · model-written summary
DPC appeared to enhance ethephon lodging control of Micmac barley, especially at ZGS 45.
- Taxon
- barleyHordeum vulgaree0
- Material
- Micmace0
- Treatment
- DPCe0
- Outcome
- lodging controle0
- Direction
- enhancee0
- Qualifier
- especially when applied at ZGS 45e0
- Comparator
- ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC and DPC appeared to enhance the effects of ethephon on lodging control of Micmac barley especially when applied at ZGS 45”
Claim · model-written summary
Ethephon alone at ZGS 37 caused significant grain yield loss in Rodeo barley in 1986.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- Ethephon alone applied at ZGS 37e0
- Outcome
- yielde0
- Direction
- losse0
- Qualifier
- in 1986e0
Not reportedMaterialComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethephon alone applied at ZGS 37 in 1986 caused significant yield loss”
t0“SPRING BARLEY”
Claim · model-written summary
CCC reduced the detrimental yield effect of ethephon on Rodeo barley.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- CCCe0
- Outcome
- detrimental effecte0
- Direction
- reducede0
- Comparator
- ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC or DPC reduced the detrimental effect of the ethephon by acting as apparent antagonists to its effects on this cultivar”
t0“SPRING BARLEY”
Claim · model-written summary
DPC reduced the detrimental yield effect of ethephon on Rodeo barley.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- DPCe0
- Outcome
- detrimental effecte0
- Direction
- reducede0
- Comparator
- ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CCC or DPC reduced the detrimental effect of the ethephon by acting as apparent antagonists to its effects on this cultivar”
t0“SPRING BARLEY”
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