Paper · 2001 · Acta Agriculturae Zhejiangensis

Studies on occurrence of weeds in arid rice nurseries and their control in Wenzhou, Zhejiang

Li Miao

14
claims
18
verbatim quotes
0
citations
3
research areas
—
Not open access

Abstract

Results of our survey showed there appear 31 species of weeds in arid rice nursery fields,In Wenzhou, Zhejiang, among which Echinochloa crusgalli, and Digitaria sanguinalis are dominant, and weed communities differ between early or late rice, regions and soils. In the fields E. crusgalli germinates first with a peak at 6-10 d after early rice seeded or 5-6 d after late rice seeded, D. sanguinalis emerges quite late with a peak at 10-20 d for early rice or 6-9 d for late rice, and Amaranthus blitum and Cyperus iria germinate last. In early arid rice nurseries, weeds appear in 2 peaks at 10-12 d and 17-19 d after rice seeded, and barnyardgrass grows quicker than rice with bigger plants. However in late arid rice nurseries, there is only one peak of weed emergence at 6-9 d after rice seeded, and barnyardgrass has similar growth speed.Field trials for weed control showed oxadiazon and a mixture of thiobencarb+bensulfuron methyl are highly effective on weeds and safe to rice. Butachlor is not suggested for weed control in arid rice nurseries due to the damage to rice seedling, although it also has good efficacy on weeds.

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Claims 14

Observationobservedoriginal resultmeasured

Claim · model-written summary

Thirty-one weed species were found in arid rice nursery fields in Wenzhou, Zhejiang.

Interactor
weedse1weed
Outcome
species of weedse1
Value
31 speciese1
Setting
Wenzhou, Zhejiange1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“there appear 31 species of weeds in arid rice nursery fields,In Wenzhou, Zhejiang”

✓ located verbatim in the source · abstract, characters 29–110 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Echinochloa crusgalli and Digitaria sanguinalis were the dominant weeds in arid rice nurseries.

Interactor
Echinochloa crusgalliEchinochloa crus-gallie2weed
Second interactor
Digitaria sanguinalisDigitaria sanguinalise2weed
Outcome
are dominante2
Setting
Wenzhou, Zhejiange1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Echinochloa crus-galli
Echinochloa crus-galli · InteractorMichael Becker · CC BY-SA 3.0 · Wikimedia Commons ↗
Digitaria sanguinalis
Digitaria sanguinalis · Second interactorMatt Lavin from Bozeman, Montana, USA · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“there appear 31 species of weeds in arid rice nursery fields,In Wenzhou, Zhejiang”

✓ located verbatim in the source · abstract, characters 29–110 · show in text ↑
e2

“among which Echinochloa crusgalli, and Digitaria sanguinalis are dominant”

✓ located verbatim in the source · abstract, characters 112–185 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Echinochloa crusgalli germinated first, peaking 6-10 d after early rice seeding.

Treatment
early rice seedede1
Interactor
E. crusgalliEchinochloa crus-gallie1weed
Outcome
germinates firste1
Value
6-10 de1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Echinochloa crus-galli
Echinochloa crus-galli · InteractorMichael Becker · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“In the fields E. crusgalli germinates first with a peak at 6-10 d after early rice seeded or 5-6 d after late rice seeded”

✓ located verbatim in the source · abstract, characters 262–383 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Digitaria sanguinalis emerged late, peaking 10-20 d after early rice seeding.

Treatment
early ricee2
Interactor
D. sanguinalisDigitaria sanguinalise2weed
Outcome
emerges quite latee2
Value
10-20 de2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Digitaria sanguinalis
Digitaria sanguinalis · InteractorMatt Lavin from Bozeman, Montana, USA · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“there appear 31 species of weeds in arid rice nursery fields,In Wenzhou, Zhejiang”

✓ located verbatim in the source · abstract, characters 29–110 · show in text ↑
e2

“D. sanguinalis emerges quite late with a peak at 10-20 d for early rice or 6-9 d for late rice”

✓ located verbatim in the source · abstract, characters 385–479 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Amaranthus blitum and Cyperus iria germinated last in arid rice nurseries.

Interactor
Amaranthus blitumAmaranthus blitume2weed
Second interactor
Cyperus iriaCyperus iriae2weed
Outcome
germinate laste2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Amaranthus blitum
Amaranthus blitum · InteractorTon Rulkens from Mozambique · CC BY-SA 2.0 · Wikimedia Commons ↗
Cyperus iria
Cyperus iria · Second interactorDinesh Valke from Thane, India · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“there appear 31 species of weeds in arid rice nursery fields,In Wenzhou, Zhejiang”

✓ located verbatim in the source · abstract, characters 29–110 · show in text ↑
e2

“Amaranthus blitum and Cyperus iria germinate last”

✓ located verbatim in the source · abstract, characters 485–534 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In early arid rice nurseries weeds emerged in two peaks, at 10-12 d and 17-19 d after rice seeding.

Treatment
early arid rice nurseriese1
Interactor
weedse1weed
Outcome
appear in 2 peakse1
Value
10-12 d and 17-19 de1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“In early arid rice nurseries, weeds appear in 2 peaks at 10-12 d and 17-19 d after rice seeded, and barnyardgrass grows quicker than rice with bigger plants”

✓ located verbatim in the source · abstract, characters 536–692 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In late arid rice nurseries weed emergence had one peak, at 6-9 d after rice seeding.

Treatment
late arid rice nurseriese1
Interactor
weedse2weed
Outcome
one peak of weed emergencee1
Value
6-9 de1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“However in late arid rice nurseries, there is only one peak of weed emergence at 6-9 d after rice seeded, and barnyardgrass has similar growth speed”

✓ located verbatim in the source · abstract, characters 694–842 · show in text ↑
e2

“there appear 31 species of weeds in arid rice nursery fields,In Wenzhou, Zhejiang”

✓ located verbatim in the source · abstract, characters 29–110 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Barnyardgrass grew quicker than rice in early arid rice nurseries.

Treatment
early arid rice nurseriese1
Interactor
barnyardgrassEchinochloa crus-gallie1weed
Outcome
growse1
Direction
quicker than ricee1
Comparator
ricee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Echinochloa crus-galli
Echinochloa crus-galli · InteractorMichael Becker · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“In early arid rice nurseries, weeds appear in 2 peaks at 10-12 d and 17-19 d after rice seeded, and barnyardgrass grows quicker than rice with bigger plants”

✓ located verbatim in the source · abstract, characters 536–692 · show in text ↑
Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Barnyardgrass had similar growth speed in late arid rice nurseries.

Treatment
late arid rice nurseriese1
Interactor
barnyardgrassEchinochloa crus-gallie1weed
Outcome
growth speede1
Qualifier
similar growth speede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Echinochloa crus-galli
Echinochloa crus-galli · InteractorMichael Becker · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“However in late arid rice nurseries, there is only one peak of weed emergence at 6-9 d after rice seeded, and barnyardgrass has similar growth speed”

✓ located verbatim in the source · abstract, characters 694–842 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Oxadiazon was highly effective on weeds and safe to rice in field trials.

Treatment
oxadiazone1
Outcome
weedse1
Direction
highly effectivee1
Qualifier
safe to ricee1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“Field trials for weed control showed oxadiazon and a mixture of thiobencarb+bensulfuron methyl are highly effective on weeds and safe to rice”

✓ located verbatim in the source · abstract, characters 843–984 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A mixture of thiobencarb and bensulfuron methyl was highly effective on weeds and safe to rice in field trials.

Treatment
a mixture of thiobencarb+bensulfuron methyle1
Outcome
weedse1
Direction
highly effectivee1
Qualifier
safe to ricee1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“Field trials for weed control showed oxadiazon and a mixture of thiobencarb+bensulfuron methyl are highly effective on weeds and safe to rice”

✓ located verbatim in the source · abstract, characters 843–984 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Butachlor damaged rice seedlings in arid rice nurseries.

Treatment
Butachlore1
Outcome
rice seedlinge1
Direction
damagee1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“Butachlor is not suggested for weed control in arid rice nurseries due to the damage to rice seedling, although it also has good efficacy on weeds”

✓ located verbatim in the source · abstract, characters 986–1132 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Butachlor had good efficacy on weeds in arid rice nurseries.

Treatment
Butachlore1
Outcome
weedse1
Direction
good efficacye1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“Butachlor is not suggested for weed control in arid rice nurseries due to the damage to rice seedling, although it also has good efficacy on weeds”

✓ located verbatim in the source · abstract, characters 986–1132 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Butachlor is not suggested for weed control in arid rice nurseries.

Outcome
weed controle1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“Butachlor is not suggested for weed control in arid rice nurseries due to the damage to rice seedling, although it also has good efficacy on weeds”

✓ located verbatim in the source · abstract, characters 986–1132 · show in text ↑

butachlor · weed · Oryza sativa (rice)Results differ

97 papers: 90 positive, 7 negative or no effect

89 papers in the same direction as this paper · 4 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

93 papers more in this group

See all 97 papers →

butachlor · organism · Oryza sativa (rice)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative
See all 4 papers →

Oxadiazon · weed · Oryza sativa (rice)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

methyl · weed · Oryza sativa (rice)Results agree

29 papers: 29 positive, 0 negative or no effect

28 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

25 papers more in this group

See all 29 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.