Paper · 2014 · Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture)

Assessment of four compost types on the nematode population dynamics in the soil sown with okra

T. I. Olabiyi; Olawale Oladeji

8
claims
16
verbatim quotes
16
citations
2
research areas
✓
Open access

Abstract

Two parallel experiments were conducted at the Teaching and Research Farm, Ladoke Akintola University of Technology and Papa Aireke Farm, both at Ogbomoso, Nigeria, to assess the effect of four different compost types on the nematode population dynamics; the growth and yield of okra, sown into nematode infested soil. Each of the compost was prepared through Rapid Composting Technology with Trichoderma harzianum as decomposer, using Windrow method. The four compost types were neem based, cassava peel based, sawdust based and Tithonia based. Nematode susceptible okra variety (NHAe-84-1) was used as test plant. The compost was applied at the rate of 1ton/ha to the treated okra while the okra plants on the untreated soil served as the control. The experimental design was randomized complete block. Data collected included nematode root damage (root gall index), population of juvenile nematode in 10g root and the population dynamics of different nematodes species in the soil. Data were also collected on the plant height, number of leaf/plant, root length, number of pod/plant, pod weight, number of seed/pod of okra. Application of the composts significantly (p<0.05) enhanced plant height, number of leaf, root length, number of pod, pod weight and number of seed of okra. The result showed that the compost significantly (p<0.05) reduced the root damage (root gall index). The population of Meloidogyne, Heterodera, Tylenchus, Tylenchulus species (nematode population dynamics) in the soil treated with composts and of root knot nematode juveniles in the root were significantly reduced.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 8

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost application significantly increased okra plant height, number of leaf, root length.

Treatment
Application of the compostse0
Outcome
plant height, number of leaf, root lengthe0
Direction
enhancede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of the composts significantly (p<0.05) enhanced plant height, number of leaf, root length, number of pod, pod weight and number of seed of okra.”

✓ located verbatim in the source · abstract, characters 1127–1283 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost application significantly increased okra number of pod, pod weight and number of seed.

Treatment
Application of the compostse0
Outcome
number of pod, pod weight and number of seede0
Direction
enhancede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of the composts significantly (p<0.05) enhanced plant height, number of leaf, root length, number of pod, pod weight and number of seed of okra.”

✓ located verbatim in the source · abstract, characters 1127–1283 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost significantly reduced okra root damage.

Treatment
the composte0
Outcome
root damage (root gall index)e0
Direction
reducede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The result showed that the compost significantly (p<0.05) reduced the root damage (root gall index).”

✓ located verbatim in the source · abstract, characters 1284–1384 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost treatment significantly reduced Meloidogyne populations.

Treatment
compostse0
Interactor
MeloidogyneMeloidogynee0pest
Outcome
Meloidogynee0
Direction
reducede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗
Meloidogyne
Meloidogyne · Interactor · picture of the genus (one of its species)Photo by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. U.S. Department of Agriculture · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The population of Meloidogyne, Heterodera, Tylenchus, Tylenchulus species (nematode population dynamics) in the soil treated with composts and of root knot nematode juveniles in the root were significantly reduced.”

✓ located verbatim in the source · abstract, characters 1385–1599 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost treatment significantly reduced Heterodera populations.

Treatment
compostse0
Interactor
HeteroderaHeteroderae0pest
Outcome
Heteroderae0
Direction
reducede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗
Heterodera
Heterodera · Interactor · picture of the genus (one of its species)Agricultural Research Service · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The population of Meloidogyne, Heterodera, Tylenchus, Tylenchulus species (nematode population dynamics) in the soil treated with composts and of root knot nematode juveniles in the root were significantly reduced.”

✓ located verbatim in the source · abstract, characters 1385–1599 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost treatment significantly reduced Tylenchus populations.

Treatment
compostse0
Interactor
TylenchusTylenchuse0pest
Outcome
Tylenchuse0
Direction
reducede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The population of Meloidogyne, Heterodera, Tylenchus, Tylenchulus species (nematode population dynamics) in the soil treated with composts and of root knot nematode juveniles in the root were significantly reduced.”

✓ located verbatim in the source · abstract, characters 1385–1599 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost treatment significantly reduced Tylenchulus species populations.

Treatment
compostse0
Interactor
Tylenchulus speciesTylenchuluse0pest
Outcome
Tylenchulus speciese0
Direction
reducede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The population of Meloidogyne, Heterodera, Tylenchus, Tylenchulus species (nematode population dynamics) in the soil treated with composts and of root knot nematode juveniles in the root were significantly reduced.”

✓ located verbatim in the source · abstract, characters 1385–1599 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Compost treatment significantly reduced root knot nematode juveniles populations.

Treatment
compostse0
Interactor
root knot nematode juvenilese0pest
Outcome
root knot nematode juvenilese0
Direction
reducede0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The population of Meloidogyne, Heterodera, Tylenchus, Tylenchulus species (nematode population dynamics) in the soil treated with composts and of root knot nematode juveniles in the root were significantly reduced.”

✓ located verbatim in the source · abstract, characters 1385–1599 · show in text ↑
t0

“okra”

✓ located verbatim in the source · title, characters 91–95 · show in text ↑

fertilization · pest · Abelmoschus esculentus (okra)Positive and negative results

20 papers: 13 positive, 7 negative or no effect

12 papers in the same direction as this paper · 7 in the opposite direction

  1. negative
  2. negative
  3. negative

16 papers more in this group

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fertilization · growth · Abelmoschus esculentus (okra)Positive and negative results

207 papers: 190 positive, 17 negative or no effect

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

  1. no effect
  2. no effect
  3. negative

203 papers more in this group

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fertilization · yield · Abelmoschus esculentus (okra)Positive and negative results

373 papers: 355 positive, 18 negative or no effect

354 papers in the same direction as this paper · 14 in the opposite direction · 4 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

369 papers more in this group

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fertilization · Meloidogyne · Abelmoschus esculentus (okra)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 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.