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| Publication Type:
| Refereed |
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| Author(s): | Joshi, Prakash C.;
Lockwood, Jeffrey A. |
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| Author Affiliation: | Department of Zoology and Environmental Sciences, Gurukul Kangri University, Hardwar, India |
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| Title: | Antifeedent effect of aqueous extract of neem (Azadirachta indica A. Juss) leaves on Oxya velox F. (Orthoptera: Acrididae) |
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| Source: | Journal of Agricultural and Urban Entomology. Vol. 17, No. 1, January 2000, p. 21-26. |
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| Publishing Information: | Clemson, SC: South Carolina Entomological Society, Inc. |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Azadirachta indica; Grasshoppers; Antifeedants; Pest control
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| Abstract/Contents: | "The antifeedent effect of aqueous extracts of neem (Azadirachta indica A. Juss) leaves was assayed using an abundant and potentially pestiferous grasshopper (Orthoptera: Acrididae) of Indian grasslands, Oxya velox F. A neem extract of 0.00004% (40 mg powdered leaves in 1-l water) applied to the food plants of 4th instar nymphs decreased daily consumption of the grasshoppers by 22% (a significant reduction compared to untreated controls) and caused a significant (6 d) reduction in longevity, relative to individuals fed on untreated foliage. An extract of 0.00006% (60 mg in 1-l water) decreased daily consumption of the grasshoppers by 50% (a significant reduction compared to untreated controls and 0.00004% extract) and significantly reduced (12 d) their longevity, relative to individuals fed on untreated foliage. At the highest neem concentration of 0.0001% (100 mg in 1-l water), daily consumption was reduced by 77% (a significant reduction compared to untreated controls and lower concentrations of extract) and significantly reduced (20 d) their longevity, relative to individuals fed on untreated foliage. Thus, it appears that simple, water-based extractions of neem may provide substantial protection of treated foliage from damage by grasshoppers." |
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| Language: | English |
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| References: | 15 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Joshi, P. C., and J. A. Lockwood. 2000. Antifeedent effect of aqueous extract of neem (Azadirachta indica A. Juss) leaves on Oxya velox F. (Orthoptera: Acrididae). J. Agric. Urban Entomol. 17(1):p. 21-26. |
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MSU catalog number: SB 818 .J68 |
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