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Effect of Margosan-O on the development of Earias insulana
Year:
1990
Source of publication :
Phytoparasitica
Authors :
Keren, Sara
;
.
Klein, Meir
;
.
Meisner, Jacob
;
.
Volume :
18
Co-Authors:
Meisner, J.
Klein, M.
Keren, S., Dept. of Entomology, ARO, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
287
To page:
297
(
Total pages:
11
)
Abstract:
The effect of Margosan-O, a formulation of a natural insecticide obtained from the neem tree (Azadirachta indica A. Juss), on the development of and the penetration rate of larvae of the spiny bollworm, Earias insulana (Boisd.), into cotton bolls was investigated by (i) incorporating Margosan-O into a semisynthetic diet and recording mortality until the adult stage; and (ii) spraying leaves and bolls with, or standing cotton seedlings or twigs of cotton with one boll per twig in aqueous dilutions of Margosan-O in an attempt to protect leaves or cotton bolls from feeding or penetration, respectively, by the larvae. Margosan-O was found to be effective when incorporated into the semisynthetic diet, even at low concentrations, especially when it was offered throughout the larval life span. Survival rate and average weight of the larvae were much lower on leaves treated with 0.5% or 0.2% Margosan-O, or exposed to its systemic effect at 0.5% or 0.25%, than on control leaves. Larval penetration into Margosan-O-sprayed bolls at concentrations of 0.01- 0.5% was ca 30-45% of that into control bolls. Margosan-O was active also as systemic treatment: only ca 35% of the larvae penetrated the 0.25%-treated bolls compared with the untreated ones. © 1990 Springer Science + Business Media B.V.
Note:
Related Files :
antifeedant
COTTON
Earias insulana
IGR effect
Margosan-O
Spiny bollworm
systemic effect
Show More
Related Content
More details
DOI :
10.1007/BF02980998
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
27586
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:32
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Scientific Publication
Effect of Margosan-O on the development of Earias insulana
18
Meisner, J.
Klein, M.
Keren, S., Dept. of Entomology, ARO, The Volcani Center, Bet Dagan, Israel
Effect of Margosan-O on the development of Earias insulana
The effect of Margosan-O, a formulation of a natural insecticide obtained from the neem tree (Azadirachta indica A. Juss), on the development of and the penetration rate of larvae of the spiny bollworm, Earias insulana (Boisd.), into cotton bolls was investigated by (i) incorporating Margosan-O into a semisynthetic diet and recording mortality until the adult stage; and (ii) spraying leaves and bolls with, or standing cotton seedlings or twigs of cotton with one boll per twig in aqueous dilutions of Margosan-O in an attempt to protect leaves or cotton bolls from feeding or penetration, respectively, by the larvae. Margosan-O was found to be effective when incorporated into the semisynthetic diet, even at low concentrations, especially when it was offered throughout the larval life span. Survival rate and average weight of the larvae were much lower on leaves treated with 0.5% or 0.2% Margosan-O, or exposed to its systemic effect at 0.5% or 0.25%, than on control leaves. Larval penetration into Margosan-O-sprayed bolls at concentrations of 0.01- 0.5% was ca 30-45% of that into control bolls. Margosan-O was active also as systemic treatment: only ca 35% of the larvae penetrated the 0.25%-treated bolls compared with the untreated ones. © 1990 Springer Science + Business Media B.V.
Scientific Publication
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