Abstract
The effects of applying potassium fertilizer at peak bolling stage(28,July) on cotton photosynthetic characteristics and its yield and quality under normal density(3.75×10~4 plants/ha) removing monopodium and low density(2.25×10~4 plants/ha) retaining monopodium were studied under filed condition with random block design.The K application rate was 75 kg/ha.The results showed that applying potassium fertilizer at middle growing stage retarded leaves aging,remained higher LAI at later growing stage,significantly increased SPAD value,photosynthetic rate,PSⅡ activity((F_V/F_O)),actual photochemical efficiency of PSⅡ(Ф_(PSⅡ)),stomata conductance(Cs) and significantly decreased non-photochemical quenching coefficient(NPQ) in stem leaves at later growing stage for both cotton populations.As the result,light energy utilization efficiency of cotton population and leaves at later growing stage were enhanced,total bolls and boll weight were increased remarkably,cotton lint yield were increased by 8.9%～9.3%,and cotton fibers tenacity was improved.
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Claims 13
Claim · model-written summary
Potassium at middle growth retarded leaf aging.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- applying potassium fertilizere0
- Outcome
- leaves aginge1
- Direction
- retardede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“applying potassium fertilizer at middle growing stage retarded leaves aging”
Claim · model-written summary
Potassium maintained higher later-stage LAI.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- LAIe1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“remained higher LAI at later growing stage”
Claim · model-written summary
Potassium significantly increased SPAD value.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- SPAD valuee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“significantly increased SPAD value,photosynthetic rate,PSⅡ activity((F_V/F_O)),actual photochemical efficiency of PSⅡ(Ф_(PSⅡ)),stomata conductance(Cs)”
Claim · model-written summary
Potassium significantly increased photosynthetic rate.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- photosynthetic ratee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“significantly increased SPAD value,photosynthetic rate,PSⅡ activity((F_V/F_O)),actual photochemical efficiency of PSⅡ(Ф_(PSⅡ)),stomata conductance(Cs)”
Claim · model-written summary
Potassium significantly increased PSII activity.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- PSⅡ activity((F_V/F_O))e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“significantly increased SPAD value,photosynthetic rate,PSⅡ activity((F_V/F_O)),actual photochemical efficiency of PSⅡ(Ф_(PSⅡ)),stomata conductance(Cs)”
Claim · model-written summary
Potassium significantly increased actual PSII photochemical efficiency.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- actual photochemical efficiency of PSⅡ(Ф_(PSⅡ))e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“significantly increased SPAD value,photosynthetic rate,PSⅡ activity((F_V/F_O)),actual photochemical efficiency of PSⅡ(Ф_(PSⅡ)),stomata conductance(Cs)”
Claim · model-written summary
Potassium significantly increased stomatal conductance.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- stomata conductance(Cs)e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“significantly increased SPAD value,photosynthetic rate,PSⅡ activity((F_V/F_O)),actual photochemical efficiency of PSⅡ(Ф_(PSⅡ)),stomata conductance(Cs)”
Claim · model-written summary
Potassium significantly decreased NPQ.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- non-photochemical quenching coefficient(NPQ)e1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“significantly decreased non-photochemical quenching coefficient(NPQ)”
Claim · model-written summary
Potassium enhanced light energy utilization efficiency of cotton population and leaves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- light energy utilization efficiency of cotton population and leavese1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“light energy utilization efficiency of cotton population and leaves at later growing stage were enhanced”
Claim · model-written summary
Potassium markedly increased total bolls.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- total bollse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“total bolls and boll weight were increased remarkably”
Claim · model-written summary
Potassium markedly increased boll weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- boll weighte1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“total bolls and boll weight were increased remarkably”
Claim · model-written summary
Potassium increased lint yield by 8.9%～9.3%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- cotton lint yielde1
- Direction
- increasede1
- Value
- 8.9%～9.3%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“cotton lint yield were increased by 8.9%～9.3%”
Claim · model-written summary
Potassium improved cotton fiber tenacity.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- applying potassium fertilizere0
- Outcome
- cotton fibers tenacitye1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton”
e0“applying potassium fertilizer at middle growing stage retarded leaves aging”
e1“cotton fibers tenacity was improved”
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See all 550 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.