CN1067781A - Insecticides - Google Patents

Abstract

Insecticide composition containing amine triazine and imidacloprid.

Description

The present invention relates to an insecticide composition containing amine triazine mite.

The insecticide composition provided by the present invention contains

(a) Amine triazine mite, and

(b) imidacloprid.

Amine triazine is a known insecticide and acaricide, which is a common name for N,N-bis(2,4-xylyliminomethyl)methylamine. imidacloprid is a known insecticide, also a common name, which is 1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylamine.

It has been found that the compositions of the present invention have superior properties than when their individual components are used, often showing synergy between the two.

The ratio of imidacloprid to imidacloprid can vary widely, usually from 10:1 to 1:10, especially from 5:1 to 1:5.

In addition, other insecticides can also be used in combination with the above active ingredients, as long as they do not adversely affect the interaction relationship between (a) and (b) above. For example, additional insecticides or acaricides may sometimes be included to extend their spectrum of activity and thereby control a wider spectrum of pest species. The composition of the present invention is active against a wide range of pests, for example: Lepidoptera, including Spodoptera, such as S.littoralis, Heliothis spp., such as H.armigera and H.viriscens, and Pieris brassicae; Diptera, including Musca domestica, Ceratitis capitata, Erioischia brassicae, Lucilia sericata and Aedes aegypti; Homoptera, including aphids, such as Megoura viciae and Nilaparvata lugens; Coleoptera, including Phaedon cochleariae, Anthonomus grandis and corn rootworm (undaprotica unctia unctia sbrpp. ); Orthoptera, including cockroaches, such as Blattella germanica; Hemiptera, such as Nilaparvata lugens, Nephotettix cincticeps, aphids, and Psylla spp., ticks, such as Boophilus microplus; lice, including Damalinia bovis and Linognathus vituli; and spider mites , such as Tetranychus urticae and Panonychus ulmi.

The compositions of the present invention may be employed in a variety of forms, it is usually most convenient to formulate in liquid form shortly before use. One of the methods of preparing this composition is by the so-called "tank mix", ie the user mixes the ingredients in the commercially available form with a certain amount of water.

Instead of tank-mixing just before use, compositions containing amine triazine and imidacloprid can be formulated as a more concentrated initial composition and diluted with water or other diluents prior to use. Such compositions may contain, in addition to the actives, surfactants. Examples of such compositions are as follows.

Dispersible solutions can be prepared by dissolving the active substance in a water-miscible solvent and adding a dispersant. In another way, the active substance and dispersant in fine powder form can also be fully mixed with water to form a slurry or paste, and if necessary, it can be added to an oil-in-water emulsion to obtain the active substance in a water-based oil emulsion. Dispersions.

An emulsifiable concentrate is an active substance dissolved in a water-immiscible solvent that forms an emulsion with water in the presence of an emulsifier.

Solid granular dosage forms comprise the active ingredient with a powdered diluent, such as kaolin, the mixture being granulated by known methods. Alternatively, the active substance is adsorbed or absorbed on a pre-formed granular diluent, such as fuller's earth, attapulgite, limestone silt.

Dispersible or wettable powders generally contain the active ingredient, a suitable surfactant, an inert powder diluent such as china clay, which are mixed together.

Another suitable concentrated composition is a flowable suspension concentrate, which is prepared by grinding together the active ingredient, water, wetting agent, and suspending agent.

In some cases, two types of preparations can be combined, for example, one component is present in an emulsifiable concentrate, and the other component is dispersed in a powder form in the above-mentioned concentrate. For the situation that the composition is directly applied to the crops by the conventional ground method, when only these active substances are used as the active ingredient in the composition, the preferred concentration range of it in the composition is 0.001-10% (weight, by composition weight), especially 0.005-5% by weight; however, when aerial spraying is employed, it may be desirable to use more concentrated compositions containing not more than 40%.

The present invention also includes a method for controlling pests, especially insects, comprising applying amine triazine mite and imidacloprid to the pests or their places together or sequentially.

The invention is illustrated by the following examples, in which the results of experiments for synergistic effects can be seen. Start with a 20% acetone solution of amine triazole emulsifiable concentrate and imidacloprid (both containing conventional surfactants) and dilute with water to the desired active concentration.

Example 1

Activity against cotton bollworm (Heliothis virescens) larvae (Ll).

The active is used in 0.2 ml portions, and several portions of the active are pipetted onto the artificial feed in the amounts indicated. After the feed was dried, it was placed in a polystyrene Petri dish. After 1 hour, 10 Ll cotton bollworms (Heliothis vireseens) were added to the dish. The dishes were covered and left in a controlled environment room at 26-27°C for 2 days under extended daylight conditions. The percentage lethality of the larvae was assessed compared to an untreated control group. The results are shown in Table 1.

Table 1

Amine triazine mite imidacloprid

Concentration (ppm) Concentration (ppm) Control%

400 0 0

160 0 0

64 0 0

0 400 90

0 160 60

0 64 60

0 25 0

160 160 100

64 160 85

Although imidaeloprid was inactive even at the highest dosage, it increased the activity of imidaeloprid in a synergistic manner.

Example 2

Ovicidal activity against eggs of cotton bollworm (Heliothis virescens).

The active substance is used in 0.2 ml per portion, and the following usage amount is pipetted onto the eggs of cotton bollworm (Heliothis virescens) female moths placed on filter paper placed in a Petri dish (1 day after oviposition and 2 days) on. The dishes were covered and left in a controlled environment room at 26-27°C for 3 days under extended daylight conditions. The percent inhibition of egg hatching indicates the level of activity compared to untreated eggs. The results are shown in Table 2.

Table 2

Amine triazine imidacloprid control %

Concentration (ppm) Concentration (ppm) 1-day eggs 2-day eggs

25 0 50 50

10 0 50 50

0 25 50 50

0 10 0 0

0 4 0 0

10 10 90 95

10 4 95 95

It can be seen that although imidacloprid alone did not show activity at the two low concentrations tested, it can increase the activity of amine triazepam in a synergistic manner. When the two are mixed, even if the total concentration is lower than the highest concentration of the individual active ingredients, it shows an activity higher than that of the individual active ingredients at the highest concentration.

Claims (3)

1, a kind of insecticides, wherein contain:

(a) amine three nitrogen mites, and

(b)imidacloprid。

2, the composition of claim 1, wherein used amine three nitrogen mites are 10: 1 to 1: 10 to the ratio ranges of used imidacloprid.

3, a kind of pest control method of insect harm particularly comprises insect or its place, place is used amine three nitrogen mite and imidacloprid that both use together, or use sequentially.