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Efficacy of deltamethrin emulsifiable concentrate against stored-product insects
Year:
2023
Authors :
Gottlieb, Daphna
;
.
Quinn, Elazar
;
.
Volume :
101
Co-Authors:

Anatoly Trostanetsky
Elazar Quinn
Aviv Rapaport
Avichai Harush
Daphna Gottlieb

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Stored-product insects are specially adapted to dry conditions and to a diet of grains and grain dust. Under favorable environmental conditions, insect populations multiply rapidly and spread in stored food. Prevention of pests' development can be achieved by a variety of methods, including the use of insecticides. Deltamethrin is a synthetic pyrethroid commonly used as an insecticide in grain storage. In Israel, deltamethrin emulsifiable concentrate (Keshet 2.5% EC) is the only pyrethroid insecticide formulation permitted for use in stored grain. Although deltamethrin is used routinely, insect populations develop consistently in warehouses and newly stored grain is rapidly infested. In the current study, we examined the efficacy of deltamethrin emulsifiable concentrate for the control of adult Sitophilus oryzae (L.) (Coleoptera: Curculionidae), Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae) and Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The insecticide was sprayed on surfaces including plastic, self-made concrete, two kinds of ready-mix concrete, as well as harvested wheat. When deltamethrin concentrations of 0.2–2.0 ppm was applied to the grain, insect mortality increased with the application rate, with complete mortality observed at 2.0 ppm. A dose of 0.2 ppm was found to be insufficient to protect the grain. Plastic surfaces and surfaces of different types of concrete were sprayed with a 4% aqueous solution of deltamethrin emulsifiable concentrate (deltamethrin concentration 0.1 mg/m2). Deltamethrin emulsifiable formulation was found to be effective on a nonporous surface and when sprayed directly on insects, but was not very effective as a residual insecticide on porous surfaces.

Note:
Related Files :
Concrete surfaces
deltamethrin
Emulsifiable formulation
Grain storage
Stored-product pests
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More details
DOI :
10.1016/j.jspr.2022.102072
Article number:
102072
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
63283
Last updated date:
22/01/2023 16:21
Creation date:
22/01/2023 15:59
Scientific Publication
Efficacy of deltamethrin emulsifiable concentrate against stored-product insects
101

Anatoly Trostanetsky
Elazar Quinn
Aviv Rapaport
Avichai Harush
Daphna Gottlieb

Efficacy of deltamethrin emulsifiable concentrate against stored-product insects

Stored-product insects are specially adapted to dry conditions and to a diet of grains and grain dust. Under favorable environmental conditions, insect populations multiply rapidly and spread in stored food. Prevention of pests' development can be achieved by a variety of methods, including the use of insecticides. Deltamethrin is a synthetic pyrethroid commonly used as an insecticide in grain storage. In Israel, deltamethrin emulsifiable concentrate (Keshet 2.5% EC) is the only pyrethroid insecticide formulation permitted for use in stored grain. Although deltamethrin is used routinely, insect populations develop consistently in warehouses and newly stored grain is rapidly infested. In the current study, we examined the efficacy of deltamethrin emulsifiable concentrate for the control of adult Sitophilus oryzae (L.) (Coleoptera: Curculionidae), Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae) and Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The insecticide was sprayed on surfaces including plastic, self-made concrete, two kinds of ready-mix concrete, as well as harvested wheat. When deltamethrin concentrations of 0.2–2.0 ppm was applied to the grain, insect mortality increased with the application rate, with complete mortality observed at 2.0 ppm. A dose of 0.2 ppm was found to be insufficient to protect the grain. Plastic surfaces and surfaces of different types of concrete were sprayed with a 4% aqueous solution of deltamethrin emulsifiable concentrate (deltamethrin concentration 0.1 mg/m2). Deltamethrin emulsifiable formulation was found to be effective on a nonporous surface and when sprayed directly on insects, but was not very effective as a residual insecticide on porous surfaces.

Scientific Publication
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