Paper · 2002 · Indian Journal of Weed Science

Sustainable Weed Management in Rice-Rice Cropping System

I. Gnanavel; R. M. Kathiresan

7
claims
14
verbatim quotes
8
citations
2
research areas
—
Not open access

Abstract

The of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons. Ploughing the land twice, during of f-season followed by twice hand weeding in the crop, recorded the least weed counts and highest weed control indices of 78.8 and 81.6%, favouring higher grain yield of 5.91 and 5.54 t ha-1 during first and second seasons, respectively. Raising green manure of Sesbania aculeata was observed to reduce the weed competition in succeeding rice. Incorporation of pressmud at 10 t ha−1+azolla inoculation at 1 t ha−1 was comparable with twice hand weeding and better than butachlor, regarding weed control and yield in rice-rice sequence. Integrating the of f-season land management with crop weed control measures of fered significant carryover effect of weed control in suppressing the weed competition during succeeding crops.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ploughing the land twice in the off-season followed by twice hand weeding gave the least weed counts in rice.

Treatment
Ploughing the land twicee1
Outcome
weed countse1
Direction
leaste1

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

e0

“The of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons”

✓ located verbatim in the source · abstract, characters 0–168 · show in text ↑
e1

“Ploughing the land twice, during of f-season followed by twice hand weeding in the crop, recorded the least weed counts and highest weed control indices of 78.8 and 81.6%”

✓ located verbatim in the source · abstract, characters 170–340 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ploughing the land twice in the off-season followed by twice hand weeding gave weed control indices of 78.8 and 81.6% in rice.

Treatment
Ploughing the land twicee1
Outcome
weed control indicese1
Direction
higheste1
Value
78.8 and 81.6%e1

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

e0

“The of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons”

✓ located verbatim in the source · abstract, characters 0–168 · show in text ↑
e1

“Ploughing the land twice, during of f-season followed by twice hand weeding in the crop, recorded the least weed counts and highest weed control indices of 78.8 and 81.6%”

✓ located verbatim in the source · abstract, characters 170–340 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ploughing the land twice with hand weeding favoured rice grain yield of 5.91 and 5.54 t ha-1 in the first and second seasons.

Treatment
Ploughing the land twicee1
Outcome
grain yielde2
Direction
highere2
Value
5.91 and 5.54 t ha-1e2
Qualifier
during first and second seasons, respectivelye2

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

e0

“The of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons”

✓ located verbatim in the source · abstract, characters 0–168 · show in text ↑
e1

“Ploughing the land twice, during of f-season followed by twice hand weeding in the crop, recorded the least weed counts and highest weed control indices of 78.8 and 81.6%”

✓ located verbatim in the source · abstract, characters 170–340 · show in text ↑
e2

“favouring higher grain yield of 5.91 and 5.54 t ha-1 during first and second seasons, respectively”

✓ located verbatim in the source · abstract, characters 342–440 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Green manure of Sesbania aculeata reduced weed competition in succeeding rice.

Treatment
green manure of Sesbania aculeatae3
Outcome
weed competitione3
Direction
reducee3

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

e3

“Raising green manure of Sesbania aculeata was observed to reduce the weed competition in succeeding rice”

✓ located verbatim in the source · abstract, characters 442–546 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pressmud with azolla was comparable with twice hand weeding for weed control and yield in rice.

Treatment
pressmud at 10 t ha−1+azolla inoculation at 1 t ha−1e4
Outcome
weed control and yielde4
Direction
comparablee4
Comparator
twice hand weedinge4

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 of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons”

✓ located verbatim in the source · abstract, characters 0–168 · show in text ↑
e4

“Incorporation of pressmud at 10 t ha−1+azolla inoculation at 1 t ha−1 was comparable with twice hand weeding and better than butachlor, regarding weed control and yield in rice-rice sequence”

✓ located verbatim in the source · abstract, characters 548–738 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pressmud with azolla was better than butachlor for weed control and yield in rice.

Treatment
pressmud at 10 t ha−1+azolla inoculation at 1 t ha−1e4
Outcome
weed control and yielde4
Direction
bettere4
Comparator
butachlore4

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 of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons”

✓ located verbatim in the source · abstract, characters 0–168 · show in text ↑
e4

“Incorporation of pressmud at 10 t ha−1+azolla inoculation at 1 t ha−1 was comparable with twice hand weeding and better than butachlor, regarding weed control and yield in rice-rice sequence”

✓ located verbatim in the source · abstract, characters 548–738 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Integrating off-season land management with crop weed control gave a significant carryover effect in suppressing weed competition in succeeding crops.

Treatment
crop weed control measurese5
Outcome
weed competitione5
Direction
suppressinge5

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

e0

“The of f-season land management practices as well as the cultural measures during cropping significantly influenced the weed flora and yield of rice in both the seasons”

✓ located verbatim in the source · abstract, characters 0–168 · show in text ↑
e5

“Integrating the of f-season land management with crop weed control measures of fered significant carryover effect of weed control in suppressing the weed competition during succeeding crops”

✓ located verbatim in the source · abstract, characters 740–929 · show in text ↑

Sesbania bispinosa · weed · Oryza sativa (rice)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

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

tillage · weed · Oryza sativa (rice)Results differ

86 papers: 71 positive, 15 negative or no effect

70 papers in the same direction as this paper · 13 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

82 papers more in this group

See all 86 papers →

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

5 papers: 2 positive, 3 negative or no effect

1 paper in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. no effect
  3. no effect

1 paper more in this group

See all 5 papers →

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

68 papers: 53 positive, 15 negative or no effect

52 papers in the same direction as this paper · 15 in the opposite direction

  1. no effect
  2. no effect
  3. no effect

64 papers more in this group

See all 68 papers →

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

603 papers: 579 positive, 24 negative or no effect

578 papers in the same direction as this paper · 17 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

599 papers more in this group

See all 603 papers →

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

729 papers: 587 positive, 142 negative or no effect

586 papers in the same direction as this paper · 115 in the opposite direction · 27 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

725 papers more in this group

See all 729 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.