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Toxicity and growth-suppression exerted by diafenthiuron in the sweetpotato whitefly, Bemisia tabaci
Year:
1993
Source of publication :
Phytoparasitica
Authors :
Horowitz, Rami
;
.
Ishaaya, Isaac
;
.
Mendelson, Zmira
;
.
Volume :
21
Co-Authors:
Facilitators :
From page:
199
To page:
204
(
Total pages:
6
)
Abstract:
Diafenthiuron (CGA 106 ’630), a thiourea, was sprayed prior to a 48-h infestation by adult females of the sweetpotato whitefly Bemisia tabaci Gennadius, on cotton seedlings under greenhouse conditions; it subsequently suppressed strongly progeny formation of the whitefly, resulting in approximately 50% progeny formation relative to control at 5 mg a.i./l. When the different development stages were separately sprayed directly, the larval stage was the most susceptible, resulting in 50% and 90% mortality of 2nd instars at concentrations of 6.5 and 49.2 mg a.i./l, whereas the LC50 values of adults and pupae were 23 and 45 mg a.i./l, respectively. A mild (30–35%) reduction of egg hatch was obtained at a range of 5–125 mg a.i./l. Thus the potency of diafenthiuron against various stages was in the order larvae > adults > pupae > eggs. Diafenthiuron exhibited a low vapor phase toxicity and had no translaminar effect when tested on first instars of B. tabaci. The high potency of diafenthiuron against whiteflies described herein, against aphids and mites, as stated in the literature, and against some lepidopterous pests, render this compound an important insect control agent for pests of cotton and other crops. © 1993, Springer Science + Business Media B.V.. All rights reserved.
Note:
Related Files :
Bemisia tabaci
cotton pests
Diafenthiuron
progeny suppression
whitefly control
Show More
Related Content
More details
DOI :
10.1007/BF02980942
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19687
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:30
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Toxicity and growth-suppression exerted by diafenthiuron in the sweetpotato whitefly, Bemisia tabaci
21
Toxicity and growth-suppression exerted by diafenthiuron in the sweetpotato whitefly, Bemisia tabaci
Diafenthiuron (CGA 106 ’630), a thiourea, was sprayed prior to a 48-h infestation by adult females of the sweetpotato whitefly Bemisia tabaci Gennadius, on cotton seedlings under greenhouse conditions; it subsequently suppressed strongly progeny formation of the whitefly, resulting in approximately 50% progeny formation relative to control at 5 mg a.i./l. When the different development stages were separately sprayed directly, the larval stage was the most susceptible, resulting in 50% and 90% mortality of 2nd instars at concentrations of 6.5 and 49.2 mg a.i./l, whereas the LC50 values of adults and pupae were 23 and 45 mg a.i./l, respectively. A mild (30–35%) reduction of egg hatch was obtained at a range of 5–125 mg a.i./l. Thus the potency of diafenthiuron against various stages was in the order larvae > adults > pupae > eggs. Diafenthiuron exhibited a low vapor phase toxicity and had no translaminar effect when tested on first instars of B. tabaci. The high potency of diafenthiuron against whiteflies described herein, against aphids and mites, as stated in the literature, and against some lepidopterous pests, render this compound an important insect control agent for pests of cotton and other crops. © 1993, Springer Science + Business Media B.V.. All rights reserved.
Scientific Publication
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