Paper · 2013 · Annals of Plant Protection Sciences

Bioefficacy of Crotalaria juncea L. extracts against rice root knot nematode, Meloidogyne graminicola*

Satish Namdeo Chavan; Pankaj; Najam Akhtar Shakil; et al.

8
claims
8
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

In vitro toxicity (LC50) of methanol (M), ethyl acetate (EA) and hexane (H) extracts of Crotalaria juncea on Meloidogyne graminicola J2s indicated that methanol extract was 1.04 times more toxic to J2s of M. graminicola compared to hexane and ethyl acetate extracts. Moreover, the mortality of J2s increased with the increase in the concentration of all the three extracts of C. juncea. In the pot study, roots of seedlings were dipped into the solutions of Crotalaria extracts (M & H) @ 500, 250, 125, 62.5 μg/ml and carbofuran for about 20 min. In general, the plant growth parameters (shoot length, shoot weight, root length & root weight) of rice plants improved at 500 μg/ml concentration of M and H extracts. Shoot length at all the concentrations of extracts were found to be on par with carbofuran application. At 60 DAI, maximum shoot length 37.90 cm and 38.72 cm was observed at 500 μg/ml in methanol and hexane extracts, respectively compared to control (21.40 cm). Among the three extracts tested, methanol extract @ 500 μg/ml was highly effective against M. graminicola in both in-vitro and pot study.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Methanol extract was 1.04 times more toxic to nematode juveniles than hexane and ethyl acetate extracts.

Treatment
methanol extracte0
Interactor
M. graminicolaMeloidogyne graminicolae0pest
Outcome
toxic to J2s of M. graminicolae0
Direction
more toxice0
Value
1.04 timese0
Comparator
hexane and ethyl acetate extractse0

Not reportedTaxon

Verbatim

e0

“methanol extract was 1.04 times more toxic to J2s of M. graminicola compared to hexane and ethyl acetate extracts.”

✓ located verbatim in the source · abstract, characters 152–266 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Juvenile mortality increased with concentration of all three extracts.

Treatment
all the three extracts of C. junceae0
Outcome
mortality of J2se0
Direction
increasede0

Not reportedTaxonInteractor

Verbatim

e0

“the mortality of J2s increased with the increase in the concentration of all the three extracts of C. juncea.”

✓ located verbatim in the source · abstract, characters 277–386 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 500 μg/ml, methanol extract improved rice shoot and root length and weight.

Treatment
Me0
Outcome
shoot length, shoot weight, root length & root weighte0
Direction
improvede0
Value
500 μg/mle0

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 plant growth parameters (shoot length, shoot weight, root length & root weight) of rice plants improved at 500 μg/ml concentration of M and H extracts.”

✓ located verbatim in the source · abstract, characters 559–714 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 500 μg/ml, hexane extract improved rice shoot and root length and weight.

Treatment
He0
Outcome
shoot length, shoot weight, root length & root weighte0
Direction
improvede0
Value
500 μg/mle0

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 plant growth parameters (shoot length, shoot weight, root length & root weight) of rice plants improved at 500 μg/ml concentration of M and H extracts.”

✓ located verbatim in the source · abstract, characters 559–714 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rice shoot length under extract treatments was comparable to carbofuran at all concentrations.

Treatment
extractse0
Outcome
Shoot lengthe0
Direction
on pare0
Comparator
carbofuran applicatione0

Not reportedTaxon

Verbatim

e0

“Shoot length at all the concentrations of extracts were found to be on par with carbofuran application.”

✓ located verbatim in the source · abstract, characters 715–818 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 60 DAI, 500 μg/ml methanol extract gave rice shoot length of 37.90 cm versus 21.40 cm in controls.

Treatment
methanole0
Outcome
shoot lengthe0
Direction
maximume0
Value
37.90 cme0
Qualifier
21.40 cme0
Comparator
controle0

Not reportedTaxon

Verbatim

e0

“At 60 DAI, maximum shoot length 37.90 cm and 38.72 cm was observed at 500 μg/ml in methanol and hexane extracts, respectively compared to control (21.40 cm).”

✓ located verbatim in the source · abstract, characters 819–976 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 60 DAI, 500 μg/ml hexane extract gave rice shoot length of 38.72 cm versus 21.40 cm in controls.

Treatment
hexane extractse0
Outcome
shoot lengthe0
Direction
maximume0
Value
38.72 cme0
Qualifier
21.40 cme0
Comparator
controle0

Not reportedTaxon

Verbatim

e0

“At 60 DAI, maximum shoot length 37.90 cm and 38.72 cm was observed at 500 μg/ml in methanol and hexane extracts, respectively compared to control (21.40 cm).”

✓ located verbatim in the source · abstract, characters 819–976 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Methanol extract at 500 μg/ml was most effective against M. graminicola in vitro and in pots.

Treatment
methanol extract @ 500 μg/mle0
Interactor
M. graminicolaMeloidogyne graminicolae0pest
Outcome
effective against M. graminicolae0
Direction
highly effectivee0

Not reportedTaxonComparator

Verbatim

e0

“methanol extract @ 500 μg/ml was highly effective against M. graminicola in both in-vitro and pot study.”

✓ located verbatim in the source · abstract, characters 1010–1114 · show in text ↑

methanol · growth · Oryza sativa (rice)Positive and negative results

3 papers: 1 positive, 2 negative or no effect

2 in the opposite direction

  1. negative
  2. no effect
See all 3 papers →

botanical · growth · Oryza sativa (rice)Positive and negative results

211 papers: 133 positive, 78 negative or no effect

132 papers in the same direction as this paper · 78 in the opposite direction

  1. negative
  2. negative
  3. negative

207 papers more in this group

See all 211 papers →

botanical · Meloidogyne graminicola · Oryza sativa (rice)Results agree

11 papers: 11 positive, 0 negative or no effect

10 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 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.