JPH03255005A - Smoking agent for insect pest control and its production - Google Patents

Abstract

PURPOSE:To obtain the subject smoking agent by admixing cyphenothrin with a combustible vehicle, a firework additive and a perfume, weighting the resultant mixture in accordance with the volume of an object for insect pest control, charging the weighed mixture in a combustible molding material, molding the material into an air-transmissible shape and subsequently impregnating the molded material with a firework additive. CONSTITUTION:A smoking agent for insect pest control composed of 0.01-2.0wt.% cyphenothrin, 30-40wt.% combustible vehicle (e.g. charcoal), 30-40wt.% firework additive (e.g. active carbon or sulfur), 0.05-0.2wt.% perfume (e.g. menthol) and 30-60wt.% combustible molding material (e.g. corrugated board) and capable of controlling only pests without an undesirable influence on useful animals. Production is carried out, e.g. by weighing a mixture composed of cyphenothrin, the combustible vehicle, the firework additive and the perfume in accordance with the volume of an object for control, charging the weighed mixture in a space of a combustible molding material, subsequently molding the material into a rod-, cylinder-or honeycomb briquet-shape, etc., then fixing the molded material to the surrounding using a pressure-sensitive tape, etc., and impregnating the molded and fixed material with paraffin, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a smoke pest control agent and a method for producing the same.

[Conventional technology]

Traditionally, pharmaceutical forms called pest control agents, insecticides, or repellents include emulsions diluted with water, oil solutions diluted to the working concentration with organic solvents, and solids such as powders, granules, or tablets. There are various types, such as those that are dissolved in water or other solvents, powders or granules that have been adjusted to the concentration for use using mineral powder or powder, solid substances that are adsorbed on combustible materials, and various other types.

Some commercially available chemicals that are used to control harmful organisms attached to beneficial organisms are diluted with water and then sprayed, but this method leaves the target area drenched in water, which reduces the desired effect of the agent. The negative effects of high humidity may be greater. In addition, inappropriate selection of types or amounts of active ingredients in pesticides for controlling pests may have an adverse effect on beneficial organisms, causing conflicts within colonies of beneficial organisms or causing colony damage. The majority of drugs are drugs that cause major damage to business owners by causing damage that weakens the economic foundations, such as causing collapse. Furthermore, when using pesticides, it may be necessary to separate beneficial organisms from the drugs, but this may result in incomplete control of harmful organisms attached to the beneficial organisms, or Even though they are aware that the work of installing chemicals in each target container can cause significant damage from harmful organisms, necessary measures are often neglected due to the complexity of each work.

For example, JP-A-48-52937, JP-A No. 55-6473
Insecticides using the Kunri method, which are typified by the inventions disclosed in publications such as No. 5 or No. 56-12302, are aimed at completely killing harmful organisms, especially sanitary pests or crop pests, while also killing beneficial organisms. It has extremely serious disadvantages in terms of use, such as the fact that it can cause damage that even kills bees (for example, bees), and that it must be heated in a metal cylindrical container.

[Problem to be solved by the invention]

As mentioned above, in the conventional technology, a method is adopted in which a combustion improver such as paraffin is impregnated after combustion is determined. The details will be described below.

First, cyphenothrin, which is the insecticidal ingredient in this invention, was selected from among the most suitable pyrethroid compounds that can control only harmful organisms without affecting beneficial organisms by adjusting the dosage. It is determined as appropriate depending on the types of beneficial organisms and harmful organisms, and is not particularly limited, but for example, when the purpose is to control yellow beetle mites that parasitize honeybees, it is necessary to apply 2 doses per group. It is desirable that it be about .0 to 3.0 ■.

Next, the combustible excipients of the present invention include wood flour, paper flour, paper chips, wires, and other crushed vegetable powders and crushed pieces.

Further, the combustion improver of the present invention includes various carbons including activated carbon, wax, animal and vegetable oils and fats, paraffin, sulfur, tetracene, nitrates, nitrites, nitrocellulose, perchlorates, and the like.

Selection of active ingredients that are effective against parasites and have no effect on beneficial organisms, and when used;
There is a problem that a fuming pest control agent that is easy to measure, mix, and install has not yet been obtained, and it has been a challenge to solve this problem.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention has a component composition in weight unit of cyphenothrin 0.01-2.0%, flammable excipient 30-40%, combustion improver 30-40%, fragrance 0. ．．
05 to 0.2% and a combustible molding material of 30 to 60% as a fuming pest control agent, and a method for producing this composition, in which cyphenothrin is combined with a combustible excipient and a combustion improver. and fragrance to make a homogeneous mixture, measure this mixture according to the volume to be pest control, fill it so that it is evenly distributed between flammable molding materials, and have a structure that allows hot air to pass through the molding material. The fragrance of the present invention can be molded into a breathable shape, and the surrounding area of the molded product can be secured with adhesive tape made of cloth or paper to prevent it from deforming. It is an essential ingredient for calming, and includes various vegetable essential oils such as menthol, cassia oil, cineole, jasmine, and loin, animal fragrances, fruits, seeds, roots, and aromatic plants. Powders of bark, leaves, flowers, etc.

Furthermore, the combustible molding material of the present invention can be used for cardboard pieces,
In addition to wood bark, wood chips, cloth, and paper, they include synthetic or natural polymeric substances such as polyvinyl chloride, nylon, polyethylene, paraffin, and wax, and adhesive tapes made of paper or cloth.

Here, the blending ratio (wt%) of each of these components is 0.01 to 2.0% for cyphenothrin, 30 to 4% for combustible excipient.
0%, combustion improver 30 to 40%, fragrance 0.05 to 0.2%, and combustible molding material 30 to 60%.The reason is that if each component is in small amounts below the respective lower limit values, the expected effect will not be achieved. This is because if the amount is not obtained or exceeds the upper limit, the effect of increasing the amount cannot be expected.

In addition, in this invention, when molding some or all of the constituent components is difficult,
As a thickener (or binder), at 5% or less ■, carboxymethyl cellulose (CMC) or its derivatives, substances containing mucilage components such as gum arabic powder, tragacanth powder, tab powder, and high viscosity animal and vegetable oils and fats. etc. can also be added. Here, it is not preferable to add more than 5% of these thickeners because it inhibits the effects of the other components.

When the above-mentioned components are blended and formed into the smoke damage control agent of the present invention, a combustible excipient sufficient to uniformly disperse the insecticidal component and produce smoke at an even concentration;
A combustion improver that promotes smoke and maintains the heating source to maintain a constant heating temperature so that the spark does not disappear during the process;
After thoroughly mixing the flavoring agent to suppress the behavior of beneficial organisms within the colony, such as conflict, agitation, and abandonment of the colony, a thickener is added if necessary, taking into account the binding state or viscosity of the mixture. The obtained mixture is weighed according to the volume to be controlled, and it can be shaped into rod-shaped, cylindrical, perforated smoked charcoal-shaped, spherical, powdered, granular, etc., but is not particularly limited, considering air permeability. Any shape and size may be determined depending on the shape of the smoker, the amount of use corresponding to the volume to be controlled, etc.

In short, in the smoke control agent of the present invention, it is necessary for the heat from the heating source to pass through the molded pest control agent to turn the active ingredient into smoke and guide it to the target location. (Regardless of the shape of the part, it is important to combine the flammable molding materials appropriately so that the interior has a well-ventilated structure.If you do this, after using the pest control agent of this invention, Since only a small amount of burnt ash remains, cleanup is extremely easy.

〔Example〕

Example: The following formulation was prepared as a smoke control agent for the honey bee mite, which is parasitic on honeybees.

Mixing ratio: 1%) Cyphenothrin (insecticide) 0.15 Evenly disperse and fill between the combined combustible molding materials. Specific methods in this case include the following. Namely, ■ A method in which the mixture is evenly dispersed and sandwiched directly between the combustible molding materials.

■ A method in which the mixture is filled into a thin plastic or paper bag, etc., and the mixture is evenly distributed inside the bag and sandwiched between the molding materials.

■ A method in which the mixture is mixed with a thickener and applied to the surface of the molding material.

etc.

In this way, molding materials with evenly dispersed active ingredients can be used.Molding materials of various shapes can be used to match the shape of the smoker, or molding materials can be adjusted to match IJi' in consideration of breathability. It is a good idea to Then, to prevent the obtained molded product from deforming, the surrounding area is fixed with cloth or paper adhesive tape, etc. 7. By impregnating it with a combustion improver such as paraffin, the desired smoke damage control agent can be obtained. .

Incidentally, the product shape of the fumigation control agent of this invention is menthol.Among the above-mentioned 4Jul ingredients, cyphenothrin, menthol, sawdust, sulfur, activated carbon, and a part of paraffin are thoroughly mixed, and this is uniformly filled into the gaps of the cardboard. Then, roll this into a rod shape with a diameter of about 9 cm, reinforce the outer circumferential surface with adhesive tape so that it does not lose its shape, melt the remaining paraffin and apply it to the surface of the cardboard rolled into a rod shape.
The smoke pest control system of this invention was obtained. A total of 80g of this repellent was made for 50 bee hives, and cut into samples with a diameter of about 9c+n and a height of about 3cm for actual medicinal efficacy testing. Using a vessel, smoke was introduced into a beehive with adult bees, octopuses, and bee eggs inside. The smoke delivery was repeated 5 to 6 times at 3 to 5 minute intervals per time per group.

Two pyrethroid components, namely permethrin and phenothrin, were selected as control insecticidal components and compared with the cyphenothrin of the present invention in terms of efficacy (mite extermination rate %) and chemical damage. The results obtained are shown in Table 1. Here, the tick extermination rate is 90-100% (A), 7
0-89% (B), 50-69% (C), 30-49%
(D), and was further evaluated on a five-point scale of less than 29% (E).

In addition, drug damage was evaluated in three stages: no drug damage (1 mark), mild drug damage (Ueda), and some drug damage (Shiin).

1, it is easy to use, and it can be said to be far superior to conventional products.

〔effect〕

From the above, the smoke pest control agent of the present invention does not cause any damage to beneficial organisms and exhibits the medicinal effect of controlling only harmful organisms. It has become possible to control the adhering bacteria at the same time as the normal fumigation process, using an extremely simple method. The pest control agent of the present invention has many advantages, such as leaving only a small amount of ash even after smoking and making cleanup extremely easy.

Claims (2)

[Claims] (1) Essential component composition by weight: Cyphenothrin 0.01
~2.0%, flammable excipient 30-40%, combustion improver 30~
40%, fragrance 0.05-0.2% and combustible molding material 30-60%. (2) Add flammable excipients, combustion improvers, and fragrances to Cyphenothrin to make a homogeneous mixture, measure this mixture according to the volume to be pest controlled, and make sure to distribute it evenly among the combustible molding materials. The flammable molding material is molded into a breathable shape that allows hot air to pass through, and the surrounding area is fixed with cloth or paper adhesive tape to prevent deformation. A method for producing a fuming pest control agent, which comprises impregnating it with a combustion improver such as paraffin.