Paper · 2020 · Journal of Pharmacognosy and Phytochemistry

Establishment and weed management effects on yield of lowland rice (Oryza sativa)

Kevizhalhou Kuotsu; Avanish Prakash Singh

7
claims
13
verbatim quotes
4
citations
2
research areas
✓
Open access

Abstract

Field experiments were conducted during the rainy (kharif) seasons of 2016 and 2017 in the experimental farm of SASRD, NU, Medziphema campus to evaluate the efficacy of various weed management practices in different rice establishment methods for improving productivity and weed control. Results revealed minimum weed density and dry matter and maximum weed control efficiency in integrated crop management (ICM) while the opposite was observed in System of Rice Intensification (SRI). Significantly lower weed density and dry weight and higher weed control efficiency was observed under HW twice at 20 and 40 days after transplanting (DAT) among the weed management methods. SRI gave better crop growth in both the years. In terms of grain yield, SRI and ICM produced 17.5 and 12.2% higher grain yield respectively over CTR. Among the weed management methods, hand weeding at 20 and 40 DAT recorded 81% higher grain yield of rice over control.

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Claims 7

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

ICM had the minimum weed density and dry matter and maximum weed control efficiency.

Treatment
integrated crop management (ICM)e0
Outcome
weed density and dry matter and maximum weed control efficiencye0
Direction
minimume0

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

e0

“minimum weed density and dry matter and maximum weed control efficiency in integrated crop management (ICM)”

✓ located verbatim in the source · abstract, characters 305–412 · show in text ↑
t0

“lowland rice”

✓ located verbatim in the source · title, characters 54–66 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

SRI had the opposite weed control pattern from ICM.

Treatment
System of Rice Intensification (SRI)e0
Outcome
the oppositee0

Not reportedDirection

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

e0

“the opposite was observed in System of Rice Intensification (SRI)”

✓ located verbatim in the source · abstract, characters 419–484 · show in text ↑
t0

“lowland rice”

✓ located verbatim in the source · title, characters 54–66 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Hand weeding twice reduced weed density and dry weight and increased weed control efficiency.

Treatment
HW twice at 20 and 40 days after transplanting (DAT)e0
Outcome
weed density and dry weight and higher weed control efficiencye0
Direction
lowere0
Comparator
the weed management methodse0

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

e0

“Significantly lower weed density and dry weight and higher weed control efficiency was observed under HW twice at 20 and 40 days after transplanting (DAT) among the weed management methods”

✓ located verbatim in the source · abstract, characters 486–674 · show in text ↑
t0

“lowland rice”

✓ located verbatim in the source · title, characters 54–66 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

SRI gave better crop growth in both years.

Treatment
SRIe0
Outcome
crop growthe0
Direction
bettere0

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

e0

“SRI gave better crop growth in both the years”

✓ located verbatim in the source · abstract, characters 676–721 · show in text ↑
t0

“lowland rice”

✓ located verbatim in the source · title, characters 54–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

SRI increased grain yield by 17.5% over CTR.

Treatment
SRIe0
Outcome
grain yielde0
Direction
highere0
Value
17.5e0
Comparator
CTRe0

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

e0

“SRI and ICM produced 17.5 and 12.2% higher grain yield respectively over CTR”

✓ located verbatim in the source · abstract, characters 748–824 · show in text ↑
t0

“lowland rice”

✓ located verbatim in the source · title, characters 54–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

ICM increased grain yield by 12.2% over CTR.

Treatment
ICMe0
Outcome
grain yielde0
Direction
highere0
Value
12.2%e0
Comparator
CTRe0

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

e0

“SRI and ICM produced 17.5 and 12.2% higher grain yield respectively over CTR”

✓ located verbatim in the source · abstract, characters 748–824 · show in text ↑
t0

“lowland rice”

✓ located verbatim in the source · title, characters 54–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Hand weeding at 20 and 40 DAT increased rice grain yield by 81% over control.

Treatment
hand weeding at 20 and 40 DATe0
Outcome
grain yielde0
Direction
highere0
Value
81%e0
Comparator
controle0

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

e0

“hand weeding at 20 and 40 DAT recorded 81% higher grain yield of rice over control”

✓ located verbatim in the source · abstract, characters 861–943 · show in text ↑

transplanting · weed · Oryza sativa (rice)Positive and negative results

146 papers: 129 positive, 17 negative or no effect

128 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

142 papers more in this group

See all 146 papers →

herbicide · yield · Oryza sativa (rice)Positive and negative results

802 papers: 725 positive, 77 negative or no effect

724 papers in the same direction as this paper · 57 in the opposite direction · 20 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

798 papers more in this group

See all 802 papers →

transplanting · yield · Oryza sativa (rice)Positive and negative results

1,078 papers: 922 positive, 156 negative or no effect

921 papers in the same direction as this paper · 132 in the opposite direction · 24 reporting no difference from an alternative

  1. positive
    Butachlor followed by cono-weeding increased rice plant height, tillers and dry matter accumulation relative to both azimsulfuron sequences.

    Weed management in rice as influenced by nitrogen application and herbicide use · 2015 · compared with pretilachlor 0.75 kg/ha followed by azimsulfuron 35 g/ha at 15 DAT, and butachlor 1.5 kg/ha followed by azimsulfuron 35 g/ha at 15 DAT

    Same directionCited by this paper

  2. no effect
  3. no effect

1,074 papers more in this group

See all 1,078 papers →

irrigation · yield · Oryza sativa (rice)Positive and negative results

1,171 papers: 906 positive, 265 negative or no effect

905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

1,167 papers more in this group

See all 1,171 papers →

ipm · yield · Oryza sativa (rice)Results agree

43 papers: 43 positive, 0 negative or no effect

42 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

39 papers more in this group

See all 43 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.