Abstract
Abstract The efficacy of aqueous extracts of cashew, Anacardium occidentale L. products was tested on Legume flower bud thrips on field cowpea in the 1999 and 2000 seasons using nutseed and nutshell at 10% w/v, bark and leaf at 20% w/v. Aqueous extract of cashew nutshell was superior to other cashew products in reducing thrip populations in cowpea flowers and compared favourably with cypermethrin + dimethoate. Pod density per plant was significantly enhanced on cowpea plants sprayed with aqueous extract of cashew nutshell compared to other extracts. Cashew extract contains cardole (a caustic substance) and anacardic acid, which may have been responsible for its insecticidal effect on thrips. This result indicates the potential of cashew products especially the nutshell for integrated management of thrips in legume crops. Keywords: Megalurothrips sjostedti cashew extractcowpea flowersintegrated management Acknowledgement The authors are grateful to Mr Gideon Gbilin for his technical assistance and to the Director, Institute for Agricultural Research, Ahmadu Bello University for his kind permission to publish this report.
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Claims 5
Claim · model-written summary
Aqueous extract of cashew nutshell was superior to other cashew products in reducing thrip populations in cowpea flowers.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- Aqueous extract of cashew nutshelle1
- Interactor
- Megalurothrips sjostedtiMegalurothrips sjostedtit0pest
- Outcome
- thrip populationse1
- Direction
- reducinge1
- Comparator
- other cashew productse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Aqueous extract of cashew nutshell was superior to other cashew products in reducing thrip populations in cowpea flowers”
t0“controllingMegalurothrips sjostedti(Thysanoptera: Thripidae)”
Claim · model-written summary
Aqueous extract of cashew nutshell compared favourably with cypermethrin + dimethoate against thrips in cowpea flowers.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- Aqueous extract of cashew nutshelle1
- Interactor
- Megalurothrips sjostedtiMegalurothrips sjostedtit0pest
- Outcome
- compared favourablye2
- Direction
- compared favourablye2
- Comparator
- cypermethrin + dimethoatee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Aqueous extract of cashew nutshell was superior to other cashew products in reducing thrip populations in cowpea flowers”
e2“compared favourably with cypermethrin + dimethoate”
t0“controllingMegalurothrips sjostedti(Thysanoptera: Thripidae)”
Claim · model-written summary
Pod density per plant was significantly enhanced on cowpea plants sprayed with aqueous extract of cashew nutshell compared with other extracts.
- Taxon
- cowpeaVigna unguiculatae3
- Treatment
- aqueous extract of cashew nutshelle3
- Outcome
- Pod density per plante3
- Direction
- enhancede3
- Comparator
- other extractse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Pod density per plant was significantly enhanced on cowpea plants sprayed with aqueous extract of cashew nutshell compared to other extracts”
Claim · model-written summary
Cardole and anacardic acid in cashew extract may have been responsible for its insecticidal effect on thrips.
- Taxon
- Cashew
Anacardium occidentalee4 - Compound
- cardole (a caustic substance) and anacardic acide4
- Outcome
- insecticidal effecte4
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Cashew extract contains cardole (a caustic substance) and anacardic acid, which may have been responsible for its insecticidal effect on thrips”
Claim · model-written summary
Cashew products, especially the nutshell, indicate potential for integrated management of thrips in legume crops.
Verbatim
e5“This result indicates the potential of cashew products especially the nutshell for integrated management of thrips in legume crops”
The same questions in other papers
botanical · Megalurothrips sjostedti · Vigna unguiculata (cowpea)Positive and negative results
5 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- 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.