Abstract
Studies were conducted under field and screenhouse conditions to investigate the potentials of crude aqueous leaf extract of Hyptis suaveolens in the management of the root-knot nematode Meloidogyne incognita of three cowpea varieties (Sampea 9, 10 and 11). A Randomized Complete Block Design was used in the field while a completely randomized design was used for the screenhouse trials. Results showed that the treatment significantly (p < 0.05) improved the growth and yield of the three varieties and also reduced soil nematode population and root galls. It was also observed that all the three varieties were susceptible to the root-knot nematode infestation but Sampea 10 recorded higher yield that were significant in the pot trials. Phytochemical screening revealed the presence of saponins, alkaloids, flavonoids and steroids in the leaves of H. suaveolens. For higher yield of the evaluated cowpea varieties in a nematode endemic zone, aqueous leaf extract of H. suaveolens is being recommended for infested soil treatment.
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Claims 6
Claim · model-written summary
The leaf extract improved growth and yield of three cowpea varieties.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- crude aqueous leaf extract of Hyptis suaveolense0
- Interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pest - Outcome
- growth and yielde1
- Direction
- improvede1
- Qualifier
- three varietiese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“crude aqueous leaf extract of Hyptis suaveolens in the management of the root-knot nematode Meloidogyne incognita of three cowpea varieties (Sampea 9, 10 and 11)”
e1“the treatment significantly (p < 0.05) improved the growth and yield of the three varieties”
Claim · model-written summary
The leaf extract reduced soil nematode populations and root galls in cowpea.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- crude aqueous leaf extract of Hyptis suaveolense0
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae0pest
- Outcome
- soil nematode population and root gallse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crude aqueous leaf extract of Hyptis suaveolens in the management of the root-knot nematode Meloidogyne incognita of three cowpea varieties”
e1“reduced soil nematode population and root galls”
Claim · model-written summary
All three evaluated cowpea varieties were susceptible to root-knot nematode infestation.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Sampea 9, 10 and 11e1
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae2pest
- Outcome
- susceptible to the root-knot nematode infestatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all the three varieties were susceptible to the root-knot nematode infestation”
e1“three cowpea varieties (Sampea 9, 10 and 11)”
e2“Meloidogyne incognita”
Claim · model-written summary
Sampea 10 had higher yield in the pot trials.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sampea 10 recorded higher yield that were significant in the pot trials”
e1“three cowpea varieties”
Claim · model-written summary
Screening detected saponins, alkaloids, flavonoids and steroids in Hyptis suaveolens leaves.
- Taxon
- H. suaveolens
_Kuntze_(3280487383).jpg?width=60)
Mesosphaerum suaveolense0 - Organ / stage
- leavese0
- Outcome
- presence of saponins, alkaloids, flavonoids and steroidse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Kuntze_(3280487383).jpg?width=500)
Verbatim
e0“Phytochemical screening revealed the presence of saponins, alkaloids, flavonoids and steroids in the leaves of H. suaveolens”
t0“Hyptis suaveolens”
Claim · model-written summary
The authors recommend aqueous H. suaveolens leaf extract for nematode-infested soil to improve cowpea yield.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- aqueous leaf extract of H. suaveolens is being recommended for infested soil treatmente0
- Qualifier
- nematode endemic zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For higher yield of the evaluated cowpea varieties in a nematode endemic zone, aqueous leaf extract of H. suaveolens is being recommended for infested soil treatment”
The same questions in other papers
botanical · Meloidogyne incognita · Vigna unguiculata (cowpea)Results agree
12 papers in the same direction as this paper
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See all 13 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.