Abstract
A field experiment was conducted at Kulumsa center of the Ethiopian Institute of Agricultural Research (EIAR) during September 2011 and January 2011 to assess the efficacy of botanical insecticides against the pea aphid, Acyrthosiphon pisum and their effect on the commonly associated natural enemies of the pest. Aqueous extracts of different parts of four plant species, namely Trev.), young leaves of Blue Gum (Eucalyptus A. Juss) and matured leaves of Aloe ( concentrations (5 and 10%) were tested along with the standard insecticide Pirimicarb 50% WP and untreated check on pea aphid tolerant variety (Tegegnech) and susceptible variety (Mohanderfer). The experiment was laid out in randomized complete block design with three replications. The lowest and highest aphid population and damage level were recorded from the standard insecticide (Pirimicarb) and untreated plots, respectively. Aphid population and their damage in botanical treatments were intermediate between the standard and the untreated check. Eucalyptus globulus resulted in lower aphid population and damage level than the re of botanical treatments. Similarly, the lowest and highest yield were recorded from the untreated and Pirimicarb treated plots, respectively. Differences between any of the botanical and Pirimicarb treatments were not significant for yield ( 0.51 to 0.81 tons/ha higher yield than the untreated check. This corresponds to a yield advantage of 21.1 to 33.5% over the untreated control. Aphid population in variety 'Tegegnech' was similar to that of the 'Mohanderfer' but damage seve rate (10 %) resulted in lower pest populations, less damage and higher yield than the low rate (5 %). Predation and parasitism were relatively high in the untreated plots, intermediate in botanical treated plots and low in Pirimicarb treatments suggesting that botanicals were safer to the natural enemies of the pest
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Claims 8
Claim · model-written summary
Pirimicarb plots had the lowest aphid population and damage, whereas untreated plots had the highest.
- Taxon
- Field Peat0
- Treatment
- Pirimicarbe0
- Interactor
- Pea Aphid, Acyrthosiphon pisum
-PLoS.jpg?width=60)
Acyrthosiphon pisumt0pest - Outcome
- aphid population and damage levele0
- Direction
- loweste0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
-PLoS.jpg?width=500)
Verbatim
e0“The lowest and highest aphid population and damage level were recorded from the standard insecticide (Pirimicarb) and untreated plots, respectively”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
Botanical treatments gave intermediate aphid population and damage.
- Taxon
- Field Peat0
- Treatment
- botanical treatmentse0
- Interactor
- Pea Aphid, Acyrthosiphon pisumAcyrthosiphon pisumt0pest
- Outcome
- Aphid population and their damagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aphid population and their damage in botanical treatments were intermediate between the standard and the untreated check”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
Eucalyptus globulus lowered aphid population and damage relative to other botanicals.
- Taxon
- Field Peat0
- Treatment
- Eucalyptus globuluse0
- Interactor
- Pea Aphid, Acyrthosiphon pisumAcyrthosiphon pisumt0pest
- Outcome
- aphid population and damage levele0
- Direction
- lowere0
- Comparator
- botanical treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eucalyptus globulus resulted in lower aphid population and damage level than the re of botanical treatments”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
Pirimicarb plots yielded highest and untreated plots lowest.
Verbatim
e0“the lowest and highest yield were recorded from the untreated and Pirimicarb treated plots, respectively”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
Botanical treatments had yields statistically indistinguishable from Pirimicarb.
Not reportedDirection
Verbatim
e0“Differences between any of the botanical and Pirimicarb treatments were not significant for yield”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
Botanical treatments produced a 0.51 to 0.81 tons/ha yield advantage over untreated plots.
Verbatim
e0“0.51 to 0.81 tons/ha higher yield than the untreated check”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
A 10% rate reduced pest populations and damage and increased yield relative to 5%.
- Taxon
- Field Peat0
- Treatment
- rate (10 %)e0
- Interactor
- Pea Aphid, Acyrthosiphon pisumAcyrthosiphon pisumt0pest
- Outcome
- pest populations, less damage and higher yielde0
- Comparator
- low rate (5 %)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rate (10 %) resulted in lower pest populations, less damage and higher yield than the low rate (5 %)”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
Claim · model-written summary
Predation and parasitism were highest in untreated plots and lowest with Pirimicarb.
Verbatim
e0“Predation and parasitism were relatively high in the untreated plots, intermediate in botanical treated plots and low in Pirimicarb treatments”
t0“Efficacy of Botanical Insecticides against the Pea Aphid, Acyrthosiphon pisum (Harris) and Effect on Some of Its Natural Enemies on Field Pea in South Central Ethiopia”
The same questions in other papers
botanical · yield · Lathyrus oleraceus (pea)Positive and negative results
25 reporting no difference from an alternative
- positive
- positive
- positive
22 papers more in this group
See all 26 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.