JP2001048701A - Bait preparation for pest control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a preparation of a bait preparation for pest control including an attractant excellent in attractivity to pest insects and an insecticidal active ingredient wherein the preparation is effectively ingested and easily brought to the nest by the pest insects. SOLUTION: This preparation is a bait preparation for pest control characterized by including an insecticidal active ingredient and an yeast extract, the bait preparation characterized by including fish meal other than the insecticidal active ingredient and the yeast extract or the bait preparation characterized by including the yeast extract obtained by growing and autolyzing a baker's yeast using a molasses. The bait preparation is characterized by being granule wherein the granule having 200-3,000 μm diameter is >=90%, the granule having 500-1,200 μm diameter is 10-70%, the granule having 1,200-2,000 μm diameter is 20-80% and the granule having 2,000-2,400 μm diameter is 10-70% and hardness of the granule is >=30 g.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pest control bait suitable for controlling pests.

[0002]

2. Description of the Related Art Conventionally, a pest control bait is prepared by placing a pest control bait containing a pesticidally active ingredient in food which the pest prefers to eat in a place where pests are likely to emerge. This is a preparation aimed at killing the entire nest by killing insects by feeding on the nest, or by transporting the bait to the nest by the pest. Preferable insect pests as generally known as attractants, polysaccharides such as starch, sucrose, disaccharides such as lactose, glucose, fructose, monosaccharides such as galactose and the like, and even pupal flour,
Proteins such as krill and oils and fats such as bran oil and corn oil are well known, but none of them has sufficient attraction. Also, an attractant poison bait containing at least one compound selected from sugar alcohols as an attractant (JP-A-9-301806) and a boric acid preparation for gel-type insect poison bait blended with gellan gum (JP-A-2-2-2)
No. 62501), but the attraction is insufficient. In addition, a poison bait yeast for controlling pests containing a seasoning sauce or a sauce flavor and a vegetable oil (Japanese Patent Application Laid-Open No. Hei 8-
Poison baits using plant substances such as cockroach insecticides using garlic (Japanese Patent Application Laid-Open No. 1-216907) and the like are known. Also, fats and oils (malt koji and rice koji) produced by yeast or bacteria, and peptone whose main component is an amino acid obtained by hydrolyzing proteins of milk and soybean are known. However, even in these cases, the attraction is not enough.

[0003] As the dosage form of bait for controlling pests, solid preparations such as tablets, granules, fine granules and powders and pastes are generally known. However, many baits are commercially available as pastes and tablets, which are crushed or chopped by pests and adjusted to an appropriate size.
Feeding and carrying to the nest are inefficient and cannot be effective enough. Therefore, it takes more than one week to complete the transport, and it takes a long time to eradicate the nest. On the other hand, those which are formed into granules, fine granules, and powders and contain an attractant to enhance attraction are commercially available. However, since these commercial products have a narrow range of particle size distribution and are almost constant in shape and size, depending on the type of pest, particle sizes that are easy to feed and carry and particle sizes that are difficult to carry are produced, and the effect is reduced by half. Would. Therefore, a pest attractant having a large number of deformed portions, a rough surface and a convex surface on the surface of the diet (Japanese Patent Application Laid-Open No. 9-2905) has been developed. However, even if the shape of the granule is smooth, it is irregular and the surface is rough. However, since the size is almost constant, the efficacy is insufficient depending on the type and size of the pest. In addition, bait is often insufficient in hardness, causing pests to ingest and transport bait less efficiently. (Especially, pests that are carried to the nest will collapse and become less efficient during transportation to the nest if the hardness is not sufficient.)

[0004]

As a method for controlling pests by using a pest-controlling bait containing an insecticidally active ingredient, a method of efficiently inducing an attractant and a bait which is more excellent in attraction, and furthermore, nesting It was necessary to develop an agent that could easily carry the pests that carried it.

[0005]

Means for Solving the Problems The present inventors have intensively studied techniques for responding to the above-mentioned demands, and as a result, have arrived at the present invention. That is, the present invention provides (1) a pest-control bait comprising an insecticidal active ingredient and a yeast extract, (2) a pest-control bait according to claim 1, further comprising fishmeal, (3) 3. The pest control bait according to claim 1 or 2, wherein at least one of the yeast extracts is an extract obtained by culturing baker's yeast using molasses and autolyzing, and (4) the dosage form is a granule. Any one of 1-3
The bait agent for controlling insect pests according to the above item, (5) the range of particle size of the granule of 200 to 3000 μm is 90% by weight or more, and the range of 500 to 1200 μm is 10 to 70% by weight and 1200.
20 to 80% by weight and 2000 to 24
6. The bait for controlling insect pests according to claim 4, wherein 00 μm is 10 to 70% by weight, and (6) the bait for controlling pests according to claim 4 or 5, wherein the hardness of the granules is 30 g or more.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION When the bait for controlling pests of the present invention is applied to a place where pests are generated, the pests attracted by the attractant gather around the bait and feed or transport to the nest efficiently. Feeding and / or bringing home a formulation with a range of particle sizes and grain hardness can result in death.

The pesticidally active ingredients usable in the present invention include boric acid, boric acid compounds, organophosphorus pesticides, carbamate pesticides, synthetic pyrethroid compounds, sulfonamide derivatives, natural products having pesticidal activity, and other pesticides. Can be used alone or in combination.

Specific examples of the insecticidally active ingredients that can be used in the present invention include diazinon, malathion, acephate, etofenprox, extrin, d-resmethrin, dl-resmethrin, permethrin, cyphenothrin, cypermethrin, allethrin, pinamine forte, biotin Aresulin, phthalthrin, sevin, oncol, bygon, methoprene, hydroprene, pyriproxyfen, phenoxycarb, methoxacidiazone, hydramethylnon, boric acid, sulfuramide, admire, methaldehyde, hexaflumuron, etc. However, the present invention is not limited to this. The formulation content of these insecticidal active ingredients is selected in the range of 0.05 to 30% by weight, preferably 0.1 to 20% by weight.

The yeast extract used in the present invention is different from conventionally known yeasts in that necessary extracts are extracted from yeast by various extraction methods. The yeast extract is described as a pest bait. There was no knowledge and its utility was not clear. Since yeast extract is rich in nutrients such as carbohydrates and vitamins (thiamine, ribiflavin, niacin, folic acid, pyridoxine, bitione, etc.) mainly containing protein, it is often used as a microorganism culture, and its nutrient value is high. To the present invention. The yeast extract used in the present invention is not limited as long as it is an extract extracted from yeast, and examples thereof include baker's yeast-derived yeast extract, brewer's yeast-derived yeast extract, and Candida-derived yeast extract. . Examples of yeast extract include Biofol T-154, Biofol A-6
95, Biofl F-950, Biofl AF (manufactured by Oriental Yeast Co., Ltd.), TYPE-D (manufactured by Biosplenger Co., Ltd.), yeast extract FNILS65, yeast extract FNI205 (manufactured by Lalman), and the like. . In addition, even if the yeast is the same depending on the cultivation method, its properties change, but among them, the baker's yeast extract obtained by culturing baker's yeast using molasses and autolyzing is more preferable in terms of attractiveness and price, and the yeast extract FNILS65, yeast Extract FN
I205 (manufactured by Lalman) and the like. This is an extract obtained by performing primary culture of baker's yeast using molasses and then dissolving (self-digesting) the grown yeast with its own enzyme. The content of the yeast extract in the whole bait for controlling pests is selected from the range of 0.5 to 30% by weight, preferably 4 to 15% by weight.

[0010] Fish meal that can be used in the present invention can be used as long as it is a crushed fish, for example, dried and crushed sardine, mackerel, saury and the like, bonito flakes, boiled powder and the like. By synthesizing the fish meal and the yeast extract, a synergistic effect was obtained, and it became possible to reduce the content of the yeast extract required by the yeast extract alone. No knowledge of such a synergistic effect is known. The mixing ratio of the fish meal and the yeast extract is not limited. However, in order to obtain a synergistic effect of attraction, it is desirable that the yeast extract has an equivalent amount to about 5 times (weight ratio). The content in the whole is selected from the range of 0.5 to 40% by weight, preferably 5 to 20% by weight.

The bait for controlling pests of the present invention can be used by incorporating a base as an extender or the like. As the substrate that can be used in the present invention, those that have a certain level of attraction as they are and are easy for pests to ingest are preferable, and are obtained by combining one or more of starches, sugars, white carbon, oils and the like. Things. Bread, flour, corn and other cereal flours, potato flour and the like as starches, sugar as sugar,
Fats and oils such as lactose, glucose, maltose, honey and the like include beef tallow, fatty acids (stearic acid, palmitic acid) and the like, but are not limited thereto. In addition, diatomaceous earth, crystalline cellulose, talc, clay, bentonite, kaolin, zeolite, and the like, which cannot be expected to attract or eat, are also used in any combination including the above-described base material because the yeast extract has a sufficient attractive force. It is possible.
This base may not be used in the pest control bait of the present invention, but when used, the content of the base in the whole pest control bait is 10 to 98% by weight, preferably 50 to 98% by weight.
It is selected from the range of 95% by weight.

The pest-controlling bait of the present invention may further comprise a coloring agent, an antioxidant, a preservative, an ingestion-preventing agent or the like, if necessary. For example, coloring agents include inorganic pigments such as iron oxide, zinc oxide, titanium oxide, and chromium oxide, and food colors such as Food Red No. 2, Food Red No. 3, Food Green No. 3, Food Blue No. 1, chlorophyll, and riboflavin. , Safflower and the like, and as an antioxidant, 2,6-t-butyl-4-
Methylphenol, n-octadecyl 3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, alkyldiphenylamine, ditridecyl 3,3 ′
Thiodipropionate, 2-mercaptobenzimidazole and the like; preservatives such as erythorbic acid, sodium erythorbate and methylhydroxyanisole; and pepper food powder, phloxine, tartrandi, β-carotene, dena Tonium benzoate and the like can be used.

The bait for controlling pests of the present invention can be used in various dosage forms such as paste, tablet, biscuit, etc., but is preferably used in granules.

The bait for controlling insect pests of the present invention can be used for commonly used tablets, granules, fine granules, powder solids and pastes, and among them, the following particle size range is particularly preferable. It has a remarkable effect with granules. The size of the pest does not affect feeding and transport to the nest, and the range of the particle size is good for attractiveness, that is, 200 to 3000 μm is 90% by weight or more and 500 to 1200 μm is 10 to 70%.
20% to 80% by weight and 1200 to 2000 μm
And a granule having 2000 to 2400 μm in an amount of 10 to 70% by weight, whereby cockroaches, gastropods (such as slugs and snails), ants,
It has a wide control effect on pests such as polypods (millipede, gegegeji, etc.). For example, ants can efficiently kill a wide range of large termites, from relatively large termites, to medium-sized black ants and brown ants, such as relatively small black ants and ants. When the purpose is to exterminate a specific ant, the effect is more exhibited by setting the particle size range to a range suitable for the ant. If the range of the particle size is as described above, the range of the particle size can be narrowed according to the characteristics of the target pest.

The particle size range was measured by measuring 100 g of the granules with 200 g.
μm, 500 μm, 1200 μm, 2000 μm, 24
The sieves are sieved using a stack of JIS Z 8801-1966 sieves having openings of 00 μm, and the weight Ag remaining between the respective sieves
Was measured, and each weight percentage B% was calculated by the following equation. B (%) = (A / 100) × 100

The hardness of the granules having the above-mentioned particle size range is determined by using a cone-shaped needle of a fruit hardness meter KM-1 (manufactured by Fujiwara Seisakusho Co., Ltd.).
Is used to measure compression molded products, extruded granules, etc. before adjusting the particle size to an appropriate range of particle size, and the measurement method is that the test object is placed on a stage that can move up and down. Is placed so that the tip of the conical needle point is at the center of the test object, and the stage is gradually pushed up to apply pressure, and when the molded or granulated material is deformed or collapsed, the movement of the pointer stops. The scale at that time is read and taken as the value of hardness. Its hardness is preferably 30 g or more, more preferably a hardness of 10
When the weight is 0 g or more and 2 kg or less, the pest can be easily ingested and the range of the particle size that can be easily carried can be maintained. Grain hardness is 30g
In the case of the following, the problem that the pest collapses during feeding and becomes difficult to eat, or after being commercialized, can be finely collapsed by a slight impact such as transportation, and the particle size range cannot be maintained, There is a problem that the attraction is reduced. In addition, a problem that the particles are solidified after disintegration during storage is likely to occur.

The preferred range of the particle size and the hardness when the bait of the present invention is prepared as granules are as described above. The shape of the granules is not specified, and can be used without any problem from polygons to cylinders and spheres. However, it is preferable that the granules have various shapes, not uniform shapes.

The method for producing the bait for controlling pests of the present invention includes dry granulation in which granules are formed without water addition and wet granulation in which granules are formed with water addition. In dry granulation, the pesticidal active ingredient, yeast extract and, in some cases, fish meal and, if necessary, other base materials are evenly mixed with a mixer (such as a Spartan Luiser), and compression-molded with a tableting machine or a molding machine, or By applying an appropriate pressure with a granulator (disk pelletizer: manufactured by Fuji Paudal), a compressed product or granule having a hardness of 30 g or more is produced, and this is crushed by an appropriate crusher, and the particle size described above is obtained. By sieving with a sieve in the range of, for example, 500 μm and 2400 μm, granules having a desired particle size range can be obtained. Further, as a wet granulation method, after mixing the raw materials and adding water, kneading, granulating with an extrusion granulator, drying, sieving to obtain a desired granule, etc. However, the method is not limited to this.

The pest control bait of the present invention can be applied to various pests and is effective. For example, cockroaches such as German cockroaches, black cockroaches, Yamato cockroaches,
For cockroaches and the like, gastropods include slugs, skull slugs, chakoura slugs and snails, and for ants, giant black ants, black ants, black ants, burrowing ants, and brown squirrels; However, the present invention is not limited to these pests.

[0020]

EXAMPLES The present invention will be described specifically with reference to Examples.
The present invention is not limited to only these examples.
Hereinafter, test examples of ants are shown as representative examples.

Example 1 10 parts by weight of Biofol T154 (manufactured by Oriental Yeast Co., Ltd.) as a yeast extract, 89.5 parts by weight of flour (manufactured by Nisshin Flour Milling Co., Ltd.) as a base material, and hydra as an insecticidal active ingredient 0.5 part by weight of methylnon was mixed, molded with a tableting machine, then crushed with a crusher and sieved to obtain a bait for controlling pests of the present invention. The bait composition for controlling pests has a particle size range of 200 to 3000 μm at 93% by weight, 50% by weight.
32% by weight of 0 to 1200 μm, 1200 to 2000 μ
m is 44% by weight, 2000 to 2400 μm is 11% by weight
And the hardness was 110 g. Examples 2 to 6 In the same manner as in Example 1, Examples 2 to 6 were prepared using the compositions shown in Table 1. Table 2 shows the particle size range and hardness of the obtained Examples 2 to 6. Example 7 FNILS65 (manufactured by Lalman) as a yeast extract
10 parts by weight, flour as a base material (manufactured by Nisshin Flour Milling Co., Ltd.)
Was mixed with 89.5 parts by weight of hydramethylnon as an insecticidal active ingredient, molded with a tableting machine, then crushed with a crusher, and sieved with 500 μm and 2400 μm sieves. A pest control bait of the present invention was obtained.
The particle size range of the pest control bait is 200 to 3000.
μm is 97% by weight, 500 to 1200 μm is 32% by weight, 1200 to 2000 μm is 45% by weight,
2400 μm was 19% by weight and the hardness was 171 g. Example 8 Raw materials were mixed well with the same composition as in Example 5, molded with a tableting machine, then crushed with a crusher and sieved to obtain a bait for controlling pests of the present invention. Table 4 shows the particle size range and hardness of the obtained Example 8. Example 9 Raw materials were mixed well with the same composition as in Example 5, and the particle size was 0.5 using a horizontal granulator (manufactured by Fuji Paudal Co., Ltd.).
mm, 0.8 mm, 1.2 mm, and 2.0 mm, each granulated using a screen, each granulated material is dried, and the obtained granules are mixed at an arbitrary ratio with four types of granules. Thus, a bait granule for controlling pests of the present invention having very few irregularities on the surface was prepared. Table 4 shows the particle size range and hardness of Example 9 obtained. Examples 10 to 12 The same compositions as in Example 5 were prepared in the same manner as in Example 7. Table 3 shows the particle size range and hardness of the obtained Examples 10 to 12. Example 13 A raw material having the same composition as that of Example 5 was 2 cm in width using a molding machine.
A biscuit-type preparation of × 2 cm was prepared. Table 3 shows the particle size distribution and hardness of Example 13 obtained. Example 14 Raw materials having the same composition as in Example 5 were mixed well, and water was added for 30 minutes.
% And kneaded well to prepare a paste. Table 3 shows the particle size distribution and hardness of the obtained Example 14. Examples 15 and 16 Raw materials of the same composition as in Example 5 were mixed well, and taken out using a disk pelletizer (manufactured by Fuji Paudal Co., Ltd.) before pressure was sufficiently applied to the raw materials. 5 grains
The mixture was sieved with a sieve of 00 μm and 2400 μm to obtain granules. Table 4 shows the particle size distribution and hardness of Examples 15 and 16 obtained. Comparative Examples 1 to 6 Comparative Examples 1 to 6 were prepared in the same manner as in Example 1 using the compositions shown in Table 1. Table 2 shows the particle size range and hardness of the obtained Comparative Examples 1 to 6.

[0022]

Table 1 Formulation of bait for controlling pests

[0023]

Table 2 Range of particle size and hardness of preparations described in Table 1

[0024]

Table 3 Table 3 Range of particle size and hardness of test agent

[0025]

Table 4 Range of particle size and hardness of test agent

Test Example 1 An ants attracting test was performed under the following conditions. The results are shown in Tables 5 and 6. Attraction comparison test between yeast extract and other attractants (1) Insects to be tested Black ants, Tribulus terrestris, Kurohimeari, Himeari (2) Bait for controlling pests tested Examples 1-6, Comparative Examples 1-6 (3) Test Method 1 g of the test agent was placed around the burrow of the insect to be tested, and the attractiveness and the degree of carrying to the nest were investigated to determine the attractive effect. One week later, ants were observed from the burrows to check the control effect. (4) Test results Table 5 shows the results of the attraction test obtained by the above test method, and Table 6 shows the control effect.

[0027]

[Table 5] Table 5 Attraction test results of ants Evaluation criteria:-: Little ants were attracted. +: Several ants are attracted, and it is observed that the test agent is carried into the burrow. ++: About 20 ants are attracted and the test agent is observed to be carried into the burrow. +++: Approximately 30 to 50 ants are attracted, and it is observed that the test agent is actively carried into the burrow.

[0028]

Table 6 Results of ant control Evaluation criteria:-: Ants come and go from the burrow actively. +: Several ants have entered and exited the burrow. ++: Ingress and egress of ants' burrows are slightly observed. +++: No entry or exit of ants from the burrow is observed.

From Tables 5 and 6, it is clear that the bait for controlling insect pests of the present invention, when containing a yeast extract in its composition, is extremely excellent in attracting and controlling effects on ants. In particular, Example 5 and Example 6 using baker's yeast extract obtained by culturing baker's yeast using molasses and autolyzing it.
Is better.

Test Example 2 A test for the ease of carrying ants was performed under the following conditions. Table 7 shows the results. Relationship with the ease of carrying ants by formulation (1) Test insects Black ants (medium-sized ants), Japanese ants (small ants) (2) Pest control bait preparations tested Examples 5, 7, 10 14 (3) Test method 1 g of the test agent was placed around the burrow of the test insect, and after 20 minutes, the remaining amount was examined, and the degree of carrying to the nest was examined. (4) Test results Table 7 shows the results of the attraction test obtained by the above test method.

[0031]

[Table 7] Table 7 Easy transport of ants and particle size Evaluation criteria:-: Almost no carry to nest. +: 1/5 or less of the whole test agent is carried to the nest. ++: About one-fifth to two-thirds of the whole test agent is carried to the nest. +++: 2/3 or more of the whole test agent is carried to the nest.

According to Table 7, the particle size range is from 200 to 3000.
μm is 90% by weight or more and 500 to 1200 μm
m is 10 to 70% by weight and 1200 to 2000 μm is 2
0 to 80% by weight and 2000 to 2400 μm
At 0% by weight, it is clear that the ants are most preferably transported to the burrows regardless of the size of the ants. It was also revealed that the biscuit mold and paste remained even after one week, and it took time for the ants to carry them by chopping them.

Test Example 3 Relationship between Hardness of Grain and Surface of Grain and Transportability of Ants (1) Test Insects Black ants (medium ants) and Japanese ants (small ants) (2) Tested pests Exterminating bait Examples 5, 8, 9, 15, 16 (3) Test method 1 g of test agent is placed around the burrow of the test insect, and after 20 minutes, the remaining amount is examined, and the degree of carrying to the nest is examined. investigated. (4) Test results Table 8 shows the results of the attraction test obtained by the above test method.

[0034]

[Table 8] Table 8 Hardness of grains and ease of carrying ants Evaluation criteria:-: Almost no carry to the nest +: 1/5 or less of the whole test agent is carried to the nest ++: About 1/5 to 2/3 of the whole test agent is carried to the nest. +++: 2/3 or more of the whole test agent is carried to the nest.

From Table 8, it is clear that grains having a hardness of 30 g or more are very effective regardless of the size of the ants. In addition, it was revealed that the carrying to the nest was the same regardless of whether the granules had irregular shaped crushed granules or smooth granules.

[0036]

According to the present invention, the bait for controlling insect pests of the present invention can be prepared by using an insecticidal active ingredient and a yeast extract, in particular, a baker's yeast extract obtained by culturing baker's yeast using molasses and autolyzing it. It has become possible to provide a bait that is more effective in attracting pests than baits such as peptone. Furthermore, the range of the particle size of the granules is 200 to 3000.
μm is 90% or more, and 500 to 1200 μm is 10 to 70% and 1200 to 2000 μm is 20 to 80.
% And 2000 to 2400 μm are 10 to 70%,
When the hardness of the grains is 30 g or more, the pests can be efficiently controlled by providing a preparation which is not affected by the size of the pests and is preferred by a wide range of pests to feed or transport to the nest.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01N 25/34 A01N 25/34 Z

Claims (6)

[Claims] 1. A pest control bait comprising an insecticidally active ingredient and a yeast extract. 2. The pest control bait according to claim 1, further comprising fish meal. 3. The bait for controlling insect pests according to claim 1, wherein at least one of the yeast extracts is an extract obtained by culturing baker's yeast using molasses and autolyzing it. 4. The bait for controlling pests according to claim 1, wherein the dosage form is a granule. 5. The particle size of the granules in the range of 200 to 3000 μm is 90% by weight or more and 500 to 1200 μm is 1%.
0 to 70% by weight and 1200 to 2000 μm are 20 to 8
The bait for controlling pests according to claim 4, wherein 0% by weight and 2000 to 2400 µm are 10 to 70% by weight. 6. The bait for controlling pests according to claim 4, wherein the hardness of the granules is 30 g or more.