Abstract
Botanical insecticides are one of the environmentally acceptable options for pest management. Extract of Flourensia oolepis (known as chilca), a plant endemic to the province of Córdoba, Argentina, has shown insecticidal activity. The aim of this work was to study the effect of crude extract of this F. oolepis on the nutritional parameters of Helicoverpa gelotopoeon, a polyphagous species recently reported as one of the most serious pests of chickpea. Choice tests were conducted using different doses of extract (1 to 10%) and acetone (control), and no-choice tests, feeding larvae for 10 days with chickpea leaves treated with extract (1 to 5%), with controls (water and acetone). We used three third instar larvae per replica and 8 repetitions of each. The variables measured were: consumption, fresh and dry weight of larvae, of feces and of the leaves given every 48 hours. We calculated the feeding inhibition and nutrition indices, and survival. In choice bioassays using the 10% dose, larvae preferred the control leaves, with the extract acting as a feeding inhibitor (92%). In the nochoice test, leaf consumption was markedly reduced with extract, affecting larval growth in a dose-dependent manner (p < 0.05), as well as feed utilization and lepidoptera survival. © JASEMKeywords: Helicoverpa gelotopoeon; Flourensia oolepis; Botanical insecticides; Pest; Food utilization
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Claims 4
Claim · model-written summary
At 10% extract, larvae preferred control leaves and feeding was inhibited by 92%.
- Taxon
- chickpea
Cicer arietinume1 - Treatment
- 10% dosee0
- Interactor
- Helicoverpa gelotopoeonHelicoverpa gelotopoeone2pest
- Outcome
- feeding inhibitore0
- Direction
- inhibitore0
- Value
- 92%e0
- Comparator
- control leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In choice bioassays using the 10% dose, larvae preferred the control leaves, with the extract acting as a feeding inhibitor (92%)”
e1“chickpea leaves treated with extract”
e2“nutritional parameters of Helicoverpa gelotopoeon”
Claim · model-written summary
Extract markedly reduced leaf consumption in the no-choice test.
- Taxon
- chickpeaCicer arietinume1
- Treatment
- extracte0
- Interactor
- Helicoverpa gelotopoeonHelicoverpa gelotopoeone2pest
- Outcome
- leaf consumptione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the nochoice test, leaf consumption was markedly reduced with extract”
e1“chickpea leaves treated with extract”
e2“nutritional parameters of Helicoverpa gelotopoeon”
Claim · model-written summary
Extract affected larval growth in a dose-dependent manner.
- Taxon
- chickpeaCicer arietinume1
- Treatment
- extracte1
- Interactor
- Helicoverpa gelotopoeonHelicoverpa gelotopoeone2pest
- Outcome
- larval growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“affecting larval growth in a dose-dependent manner (p < 0.05)”
e1“chickpea leaves treated with extract”
e2“nutritional parameters of Helicoverpa gelotopoeon”
Claim · model-written summary
Extract affected larval feed utilization and survival.
- Taxon
- chickpeaCicer arietinume2
- Treatment
- extracte1
- Interactor
- Helicoverpa gelotopoeonHelicoverpa gelotopoeone3pest
- Outcome
- feed utilization and lepidoptera survivale0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as well as feed utilization and lepidoptera survival”
e1“leaf consumption was markedly reduced with extract, affecting larval growth in a dose-dependent manner (p < 0.05), as well as feed utilization and lepidoptera survival”
e2“chickpea leaves treated with extract”
e3“nutritional parameters of Helicoverpa gelotopoeon”
The same questions in other papers
botanical · Helicoverpa gelotopoeon · Cicer arietinum (chickpea)Results agree
1 paper in the same direction as this paper
- positive
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.