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Synergistic insecticidal compositions

a composition and insecticidal technology, applied in the field of synergistic insecticidal compositions, can solve the problems of not always finding high synergistic action and not necessarily giving satisfactory insect control, and achieve the effect of enhancing plant protection

Inactive Publication Date: 2008-05-08
TREACY MICHAEL FR +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] The present invention further provides a method for the enhanced protection of plants from infestation and attack by insects.

Problems solved by technology

Although the rotational application of insect control agents having different modes of action may be adopted for good pest management practice, this approach does not necessarily give satisfactory insect control.
Further, even though combinations of insect control agents have been studied, a high synergistic action has not always been found.

Method used

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  • Synergistic insecticidal compositions
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  • Synergistic insecticidal compositions

Examples

Experimental program
Comparison scheme
Effect test

example 1

Evaluation of the Synergistic Insecticidal Effect of a Combination of a Neuronal Sodium Channel Antagonist Plus a Second Insecticide

[0098] In this evaluation, Heliothis zea (cotton bollworm), Heliothis virescens (tobacco budworm) and pyrethroid-resistant Heliothis virescens larvae used are obtained from laboratory colonies. Pyrethroid-resistant H. virescens are derived from the PEG-strain [Campannola & Plapp, Proceedings of Beltwide Cotton Conference (1988)].

[0099] Cotton leaves are immersed in 1:1 v / v, acetone / water solutions of test compound, or solutions of a combination of test compounds for a period of about 3 seconds. Following immersion, leaves are allowed to air-dry for 2-3 hours. Plastic bioassay trays containing multiple open-faced wells (4.0×4.0×2.5 cm) are used as the test arenas. Cut portions of a treated leaf, a moistened cotton dental wick and a single third-instar larva are placed into each well, covered with an adhesive vented clear plastic sheet and held under co...

example 2

Evaluation of the Synergistic Insecticidal Effect of a Combination of a Neuronal Sodium Channel Antagonist Plus an Amidinohydrazone

[0101] In this evaluation, adult male German cockroaches (Blattella germanica) are used. For each test, a 4.0 g portion of ground Purina Dog Chow (Hi-Pro Glo®) is treated with an acetone solution of test compound alone or in combination with a second test compound. After treatment, the acetone is evaporated and the treated dog chow is placed in a ¾ oz plastic cup which is placed in a harborage made of folded sheets of blotter paper placed in a plastic box (16″ L×11″ W×6″ H). The plastic box (test arena) is also fitted with a 1 oz narrow mouth bottle with 2 dental wicks inserted at the mouth. A control box is prepared in the same manner using ground dog chow which has been treated with reagent grade acetone. Each treatment is replicated three times. Into each test arena are placed 20 healthy adult male cockroaches which have been reared in an insectary. ...

example 3

Evaluation of the Synergistic Insecticidal Effect of a Combination of a Neuronal Sodium Channel Antagonist Plus a Recombinant Nucleopolyhedrovirus Capable of Expressing an Insect Toxin

[0103] In this evaluation, Helicoverpa zea (cotton bollworm) larvae are obtained from a laboratory colony. Test compounds are dissolved in 1:1 v / v acetone / water. Plastic bioassay trays (C-D International, Pitman, N.J.) are used as test arenas. Each tray contains 32 open-faced wells, 4.0×4.0×2.5 cm. A portion (5 ml) of a wheat germ-soybean flour-based artificial diet (Southland Products, Lake Village, Ark.) is poured into each well. After the diet hardened, 0.4 ml of test solution is pipetted onto the diet surface in each well. Test solutions are evenly spread over surfaces of diet by picking up the tray and gently tilting it from side to side. Trays are then held in a vented area for about 2 h, until water is no longer pooled on diet surfaces. A single 4-day-old H. zea larva is then placed on the surf...

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Abstract

The present invention provides a synergistic insecticidal composition comprising as essential active ingredients a neuronal sodium channel antagonist in combination with one or more compounds selected from the group consisting of pyrethroids, pyrethroid-type compounds, recombinant nucleopolyhedroviruses capable of expressing an insect toxin, organophosphates, carbamates, formamidines, macrocyclic lactones, amidinohydrazones, GABA antagonists and acetylcholine receptor ligands. Also provided are methods for synergistic insect control and crop protection.

Description

BACKGROUND OF THE INVENTION [0001] Insecticidal agents and compositions have been developed to control insect pests such as agrohorticultural pests, hygienic pests, or wood-eating pests and in practice have been used as a single or a mixed agent. However, economically efficient and ecologically safe insect control compositions are still being sought. Insecticidal compositions which allow for reduced effective dosage rates, increased environmental safety and lower incidence of insect resistance are highly desirable. Although the rotational application of insect control agents having different modes of action may be adopted for good pest management practice, this approach does not necessarily give satisfactory insect control. Further, even though combinations of insect control agents have been studied, a high synergistic action has not always been found. Obtaining an insecticidal composition which demonstrates no cross-resistance to existing insecticidal agents, no toxicity problems a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01N43/54A01N33/06A01P7/04C07C281/14A01N37/52A01N43/16A01N43/40A01N43/56A01N43/58A01N47/24A01N47/34A01N47/40A01N53/08
CPCA01N37/50A01N43/56A01N47/34A01N47/38A01N63/00A01N53/00A01N47/40A01N47/24A01N47/02A01N43/54A01N43/22A01N37/52A01N2300/00A01N63/50Y02A50/30A01N63/16
Inventor TREACY, MICHAEL FRANKBORYSEWICZ, RAYMOND FRANKSCHWINGHAMMER, KURT ALLENRENSNER, PAUL E.OLOUMI-SADEGHI, HASSAN
Owner TREACY MICHAEL FR
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