Abstract
The effects of dose and the timing of the application of three different types of plant growth regulators on lodging and grain yield of a landrace of barley (Bere) were investigated. Results indicated that the application of full dose of plant growth regulators at Zadoks growth stage 31 had improved lodging resistance by reducing the stem length. Amongst plant growth regulators Upgrade caused the highest reduction in stem length and lodging index compared with other plant growth regulators while Adjust was the least effective plant growth regulator. The results indicated that Upgrade was less effective in lodging control at the higher nitrogen level (90 kg ha-1). Although this plant growth regulator improved lodging resistance, grain yield was not enhanced in any of the trials. This outcome was due to a delayed lodging and/or absence of severe lodging in the control plots. Further investigations on the effect of timing of lodging incidence on grain yield would be useful extension of the present study. A separate trial investigating the effectiveness of Upgrade in lodging control under a range of nitrogen levels is recommended.
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Claims 10
Claim · model-written summary
A full regulator dose at Zadoks stage 31 improved lodging resistance.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- full dose of plant growth regulators at Zadoks growth stage 31e0
- Outcome
- lodging resistancee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“application of full dose of plant growth regulators at Zadoks growth stage 31 had improved lodging resistance”
t0“barley”
Claim · model-written summary
A full regulator dose at stage 31 reduced stem length.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- full dose of plant growth regulators at Zadoks growth stage 31e0
- Outcome
- stem lengthe0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of full dose of plant growth regulators at Zadoks growth stage 31 had improved lodging resistance by reducing the stem length”
t0“barley”
Claim · model-written summary
Upgrade reduced stem length the most among tested regulators.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Upgradee0
- Outcome
- stem lengthe0
- Direction
- highest reductione0
- Comparator
- other plant growth regulatorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upgrade caused the highest reduction in stem length and lodging index compared with other plant growth regulators”
t0“barley”
Claim · model-written summary
Upgrade reduced lodging index the most among tested regulators.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Upgradee0
- Outcome
- lodging indexe0
- Direction
- highest reductione0
- Comparator
- other plant growth regulatorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upgrade caused the highest reduction in stem length and lodging index compared with other plant growth regulators”
t0“barley”
Claim · model-written summary
Adjust was the least effective regulator for lodging control.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Adjuste0
- Outcome
- least effective plant growth regulatore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adjust was the least effective plant growth regulator”
t0“barley”
Claim · model-written summary
Upgrade was less effective at controlling lodging at 90 kg ha-1 nitrogen.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Upgradee0
- Outcome
- lodging controle0
- Direction
- less effectivee0
- Qualifier
- higher nitrogen level (90 kg ha-1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upgrade was less effective in lodging control at the higher nitrogen level (90 kg ha-1)”
t0“barley”
Claim · model-written summary
The regulator did not enhance grain yield in any trial.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- grain yielde0
- Direction
- not enhancede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield was not enhanced in any of the trials”
t0“barley”
Claim · model-written summary
The authors attributed the yield outcome to delayed or absent severe lodging in controls.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- This outcomee0
- Qualifier
- delayed lodging and/or absence of severe lodging in the control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This outcome was due to a delayed lodging and/or absence of severe lodging in the control plots”
t0“barley”
Claim · model-written summary
The authors recommend further study of lodging timing and grain yield.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- investigations on the effect of timing of lodging incidence on grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further investigations on the effect of timing of lodging incidence on grain yield would be useful”
t0“barley”
Claim · model-written summary
The authors recommend testing Upgrade for lodging control across nitrogen levels.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- trial investigating the effectiveness of Upgrade in lodging control under a range of nitrogen levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A separate trial investigating the effectiveness of Upgrade in lodging control under a range of nitrogen levels is recommended”
t0“barley”
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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.