Abstract
The weed control effects of paraquat and subsequent dynamics in untilled rape fields,as well as the influence of paraquat on the sunlight and crop yield were studied to evaluate the application prospect of paraquat and establish a weed management system in untilled rapeseed fields.The results showed that paraquat provided good control effects on weeds in untilled rapeseed fields,the overall effects ranged from 98.50% to 99.49% five days after treatment(DAT),decreased and maintained above 85% for 160 DAT with graduall decrease.The efficacy was higher on Alopecurus aequalis,Malachium aquaticum and Beckmannia syzigachne,than on Mazus japonicus.Paraquat application significantly improved the light conditions in rapeseed field and the light penetration rate increased with the dosage of herbicide.The application of paraquat had no effect on the plant height and 1000-seed weight,whereas the height of first branch,numbers of branches and siliquae were markedly influenced,resulting in a significant yield increase of rapeseed.
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Claims 8
Claim · model-written summary
Paraquat weed control was 98.50% to 99.49% at five days.
- Taxon
- rapeseede0
- Treatment
- paraquate0
- Interactor
- weedse0weed
- Outcome
- control effects on weedse0
- Direction
- goode0
- Value
- 98.50% to 99.49%e0
Not reportedComparator
Verbatim
e0“paraquat provided good control effects on weeds in untilled rapeseed fields,the overall effects ranged from 98.50% to 99.49% five days after treatment(DAT)”
Claim · model-written summary
Paraquat weed control declined but stayed above 85% through 160 days.
Verbatim
e0“decreased and maintained above 85% for 160 DAT with graduall decrease”
t0“rapeseed”
Claim · model-written summary
Paraquat efficacy was higher against three weed species than Mazus japonicus.
- Taxon
- rapeseedt0
- Interactor
- Alopecurus aequalis
Alopecurus aequalise0weed - Outcome
- efficacye0
- Direction
- highere0
- Comparator
- Mazus japonicuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The efficacy was higher on Alopecurus aequalis,Malachium aquaticum and Beckmannia syzigachne,than on Mazus japonicus”
t0“rapeseed”
Claim · model-written summary
Paraquat improved light conditions in rapeseed fields.
Not reportedComparator
Verbatim
e0“Paraquat application significantly improved the light conditions in rapeseed field”
Claim · model-written summary
Light penetration increased with herbicide dosage.
Verbatim
e0“the light penetration rate increased with the dosage of herbicide”
t0“rapeseed”
Claim · model-written summary
Paraquat did not affect rapeseed plant height or 1000-seed weight.
- Taxon
- rapeseedt0
- Treatment
- application of paraquate0
- Outcome
- plant height and 1000-seed weighte0
- Direction
- no effecte0
Not reportedComparator
Verbatim
e0“The application of paraquat had no effect on the plant height and 1000-seed weight”
t0“rapeseed”
Claim · model-written summary
Paraquat markedly influenced first branch height, branch number and siliqua number.
Not reportedDirection
Verbatim
e0“the height of first branch,numbers of branches and siliquae were markedly influenced”
t0“rapeseed”
Claim · model-written summary
Paraquat significantly increased rapeseed yield.
Not reportedTreatmentComparator
Verbatim
e0“resulting in a significant yield increase of rapeseed”
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paraquat · yield · Brassica napus (oilseed rape)Positive and negative results
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1 paper more in this group
See all 5 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.