Paper · 2001 · Indian Journal of Weed Science

Effect of Weed Control and Nutrient Management Practices in Rice

D. J. Rajkhowa; A. K. Gogoi; R. Kandali

8
claims
13
verbatim quotes
4
citations
3
research areas
—
Not open access

Abstract

A field experiment was conducted during rainy seasons of 1998, 1999 and 2000 in acid inceptisol to find out most effective weed control and nutrient management practice for rice. Results revealed that butachlor 1.0 kg ha−1 or pretilachlor 0.75 kg ha−1 applied three days after transplanting (DAT) significantly reduced weed infestation till 45 DAT and resulted in higher yield of rice over weedy check. Nutrient management practices showed no significant variation in weed density and dry matter accumulation. Vermicompost (2.5 t ha−1 or fresh biomass of either Ipomoea or Crotolaria each 5 t ha−1 alongwith 75% recommended fertilizer dose resulted in significantly higher grain yield and soil organic carbon and available N, P and K over recommended fertilizer dose.

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Claims 8

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Butachlor applied three days after transplanting significantly reduced weed infestation through 45 DAT and increased rice yield relative to a weedy check.

Treatment
butachlor 1.0 kg ha−1e0
Outcome
weed infestatione0
Direction
reducede0
Qualifier
till 45 DATe0
Comparator
weedy checke0

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

“butachlor 1.0 kg ha−1 or pretilachlor 0.75 kg ha−1 applied three days after transplanting (DAT) significantly reduced weed infestation till 45 DAT and resulted in higher yield of rice over weedy check”

✓ located verbatim in the source · abstract, characters 201–401 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 60–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Pretilachlor applied three days after transplanting significantly reduced weed infestation through 45 DAT and increased rice yield relative to a weedy check.

Treatment
pretilachlor 0.75 kg ha−1e0
Outcome
weed infestatione0
Direction
reducede0
Qualifier
till 45 DATe0
Comparator
weedy checke0

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

“butachlor 1.0 kg ha−1 or pretilachlor 0.75 kg ha−1 applied three days after transplanting (DAT) significantly reduced weed infestation till 45 DAT and resulted in higher yield of rice over weedy check”

✓ located verbatim in the source · abstract, characters 201–401 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Butachlor produced higher rice yield than the weedy check.

Treatment
butachlor 1.0 kg ha−1e0
Outcome
yield of ricee0
Direction
highere0
Comparator
weedy checke0

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

“butachlor 1.0 kg ha−1 or pretilachlor 0.75 kg ha−1 applied three days after transplanting (DAT) significantly reduced weed infestation till 45 DAT and resulted in higher yield of rice over weedy check”

✓ located verbatim in the source · abstract, characters 201–401 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pretilachlor produced higher rice yield than the weedy check.

Treatment
pretilachlor 0.75 kg ha−1e0
Outcome
yield of ricee0
Direction
highere0
Comparator
weedy checke0

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

“butachlor 1.0 kg ha−1 or pretilachlor 0.75 kg ha−1 applied three days after transplanting (DAT) significantly reduced weed infestation till 45 DAT and resulted in higher yield of rice over weedy check”

✓ located verbatim in the source · abstract, characters 201–401 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Nutrient management practices did not significantly vary weed density or dry matter accumulation.

Treatment
Nutrient management practicese0
Outcome
weed density and dry matter accumulatione0
Direction
no significant variatione0

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

“Nutrient management practices showed no significant variation in weed density and dry matter accumulation.”

✓ located verbatim in the source · abstract, characters 403–509 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 60–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Vermicompost with 75% recommended fertilizer increased rice grain yield and soil carbon and available nutrients over the recommended fertilizer dose.

Treatment
Vermicompost (2.5 t ha−1e0
Outcome
grain yield and soil organic carbon and available N, P and Ke0
Direction
highere0
Comparator
recommended fertilizer dosee0

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

“Vermicompost (2.5 t ha−1 or fresh biomass of either Ipomoea or Crotolaria each 5 t ha−1 alongwith 75% recommended fertilizer dose resulted in significantly higher grain yield and soil organic carbon and available N, P and K over recommended fertilizer dose.”

✓ located verbatim in the source · abstract, characters 510–767 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 60–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Ipomoea biomass with 75% recommended fertilizer increased rice grain yield and soil carbon and available nutrients over the recommended fertilizer dose.

Treatment
Ipomoeae0
Outcome
grain yield and soil organic carbon and available N, P and Ke0
Direction
highere0
Comparator
recommended fertilizer dosee0

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

“Vermicompost (2.5 t ha−1 or fresh biomass of either Ipomoea or Crotolaria each 5 t ha−1 alongwith 75% recommended fertilizer dose resulted in significantly higher grain yield and soil organic carbon and available N, P and K over recommended fertilizer dose.”

✓ located verbatim in the source · abstract, characters 510–767 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 60–64 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Crotolaria biomass with 75% recommended fertilizer increased rice grain yield and soil carbon and available nutrients over the recommended fertilizer dose.

Treatment
Crotolariae0
Outcome
grain yield and soil organic carbon and available N, P and Ke0
Direction
highere0
Comparator
recommended fertilizer dosee0

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

“Vermicompost (2.5 t ha−1 or fresh biomass of either Ipomoea or Crotolaria each 5 t ha−1 alongwith 75% recommended fertilizer dose resulted in significantly higher grain yield and soil organic carbon and available N, P and K over recommended fertilizer dose.”

✓ located verbatim in the source · abstract, characters 510–767 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 60–64 · show in text ↑

butachlor · yield · Oryza sativa (rice)Results differ

90 papers: 82 positive, 8 negative or no effect

81 papers in the same direction as this paper · 5 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

86 papers more in this group

See all 90 papers →

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 →

Pretilachlor · yield · Oryza sativa (rice)Results differ

141 papers: 133 positive, 8 negative or no effect

132 papers in the same direction as this paper · 3 in the opposite direction · 5 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

137 papers more in this group

See all 141 papers →

Pretilachlor · weed · Oryza sativa (rice)Results differ

150 papers: 147 positive, 3 negative or no effect

146 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

146 papers more in this group

See all 150 papers →

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

68 papers: 53 positive, 15 negative or no effect

14 papers in the same direction as this paper · 53 in the opposite direction

  1. positive
  2. positive
  3. positive

64 papers more in this group

See all 68 papers →

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

3,455 papers: 3,183 positive, 272 negative or no effect

3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

3,451 papers more in this group

See all 3,455 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.