Abstract
ABSTRACT The insecticidal activity of Piper guineense Schum & Thonn extracts mixed with extracts of other plant species was tested on Maruca vitrata Fab. (Lepidoptera: Pyralidae) and the coried bug, Clavigralla tomentosicollis Stal. (Hemiptera: Coreidae), two major post-flowering cowpea [Vigna vitrata (L.) Walp.] pests. Extracts of Piper guineense mixed with extracts of Allium sativum L., Azadirachta indica A. Juss, and Xylopia aethiopica (Dunal) A. Rich provided effective pest control, leading to significant reductions in the population of the test pests as compared with untreated controls. In 2 years of study, the extract mixtures also resulted in significant reduction of pod damage on the cowpea and grain yields comparable with plants treated with a synthetic insecticide. The observations demonstrate the potential use of P. guineense in mixtures with other plants for protecting field cow-pea against M. vitrata and C. tomentosicollis.
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Claims 4
Claim · model-written summary
Mixtures of Piper guineense with other plant extracts significantly reduced Maruca vitrata populations versus untreated controls.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- Extracts of Piper guineense mixed with extracts of Allium sativum L., Azadirachta indica A. Juss, and Xylopia aethiopica (Dunal) A. Riche0
- Interactor
- Maruca vitrata
Maruca vitratae1pest - Outcome
- population of the test pestse0
- Direction
- reductionse0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts of Piper guineense mixed with extracts of Allium sativum L., Azadirachta indica A. Juss, and Xylopia aethiopica (Dunal) A. Rich provided effective pest control, leading to significant reductions in the population of the test pests as compared with untreated controls.”
t0“Cultivated Cowpea Pests”
e1“Maruca vitrata Fab. (Lepidoptera: Pyralidae) and the coried bug, Clavigralla tomentosicollis Stal.”
Claim · model-written summary
The extract mixtures significantly reduced Clavigralla tomentosicollis populations versus untreated controls.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Extracts of Piper guineense mixed with extracts of Allium sativum L., Azadirachta indica A. Juss, and Xylopia aethiopica (Dunal) A. Riche0
- Interactor
- Clavigralla tomentosicollisClavigralla tomentosicollise1pest
- Outcome
- population of the test pestse0
- Direction
- reductionse0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts of Piper guineense mixed with extracts of Allium sativum L., Azadirachta indica A. Juss, and Xylopia aethiopica (Dunal) A. Rich provided effective pest control, leading to significant reductions in the population of the test pests as compared with untreated controls.”
t0“Cultivated Cowpea Pests”
e1“Clavigralla tomentosicollis Stal.”
Claim · model-written summary
Extract mixtures significantly reduced cowpea pod damage over two years.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- extract mixturese0
- Outcome
- pod damagee0
- Direction
- reductione0
- Qualifier
- 2 yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2 years of study, the extract mixtures also resulted in significant reduction of pod damage on the cowpea and grain yields comparable with plants treated with a synthetic insecticide.”
Claim · model-written summary
Extract mixtures produced cowpea grain yields comparable with synthetic insecticide treatment.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- extract mixturese0
- Outcome
- grain yieldse0
- Direction
- comparablee0
- Comparator
- plants treated with a synthetic insecticidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2 years of study, the extract mixtures also resulted in significant reduction of pod damage on the cowpea and grain yields comparable with plants treated with a synthetic insecticide.”
The same questions in other papers
Allium sativum · Maruca vitrata · Vigna unguiculata (cowpea)Results agree
1 paper in the same direction as this paper
- positive
Piper guineense · Maruca vitrata · Vigna unguiculata (cowpea)Results agree
1 paper in the same direction as this paper
- positive
Azadirachta indica · Clavigralla tomentosicollis · Vigna unguiculata (cowpea)Results agree
2 papers in the same direction as this paper
- positive
- positive
Azadirachta indica · Maruca vitrata · Vigna unguiculata (cowpea)Results agree
2 papers in the same direction as this paper
- positive
- positive
botanical · yield · Vigna unguiculata (cowpea)Positive and negative results
77 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
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See all 80 papers →botanical · pest · Vigna unguiculata (cowpea)Positive and negative results
122 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
122 papers more in this group
See all 126 papers →botanical · Clavigralla tomentosicollis · Vigna unguiculata (cowpea)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →botanical · Maruca vitrata · Vigna unguiculata (cowpea)Results agree
13 papers in the same direction as this paper
- positive
- positive
- positive
10 papers more in this group
See all 14 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.