JP2002332205A - Insecticide and acaricide and insecticidal and acaricidal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fast-acting insecticide and acaricide having low toxicity and capable of effectively controlling insect pests over a long period and an insecticidal and acaricidal method. SOLUTION: This insecticide and araricide is characterized as comprising a natural enemy mold (Verticillium lecanii) and a starch as active ingredients. The insecticidal and acaricidal method is characterized by comprising the natural enemy mold (Verticillium lecanii) and starch as the active ingredients.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insecticide and acaricide and a method for insecticide and acaricide. In particular, in the field of agriculture and horticulture, an insecticide which has low toxicity, is fast-acting and can effectively control pests for a long period of time.・ It relates to acaricides and insecticide / miticidal methods.

[0002]

2. Description of the Related Art Natural enemy filamentous fungi are widely known as natural enemy against insects and mites.
genus rsonia, Beauveria, Entomomo
genus phthora, genus Hirsutella, Meta
genus rhizium, genus Monacrosporium,
Natural enemy filamentous fungi belonging to the genus Neozygites, the genus Paecilomyces and the genus Verticillium have been studied as pest control agents, and some of them have been put to practical use as biological pesticides. However, since these are not enough compared with general chemical pesticides, they need to be repeatedly treated in many cases, and there is also a drawback that they are not effective particularly under conditions where pests have already occurred frequently. On the other hand, it is disclosed in JP-A-7-126105 that starch is effective for controlling minute pests such as spider mites, aphids, whiteflies, and thrips.
And JP-A-8-319207. Starch has a fast-acting effect by inhibiting the action of pests and causing suffocation by adhesion, and hardly develops resistance to pests, but has poor residual effect, so long-term effects cannot be expected much .

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an insecticide and acaricide and a method for controlling insecticides and mites which are low in toxicity, can be controlled quickly and effectively for a long period of time. Is what you do.

[0004]

According to the present invention, there is provided an insecticidal / miticidal agent containing a natural enemy filamentous fungus and starch as active ingredients, and a method for killing insects and acaridicidal using a natural enemy filamentous fungus and starch. Is to solve.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION As the natural enemy filamentous fungi used in the present invention, natural enemy filamentous fungi of pests widely found in nature can be used, and specific examples thereof include, for example, Ascher
soniaaleirodis, Beauveria
Bassiana, B.A. brongniartii, M
etahizium anisopriae, Mon
acrosporium phymatophagu
m, Verticillium lecanii, Hir
Sutella thompsonii, Neozyg
items floridana, Paecillomyc
es fumosoroseus, Entomopht
hora aulicae, E.C. maiimaga,
E. FIG. muscae and the like. Among them, verticillium parasitizing small pests such as spider mites, aphids, whiteflies, and thrips
Lecani (Verticillium lecanii)
It is preferable to use As the natural enemy filamentous fungi, usually, the cells of the above filamentous fungi are directly used, or those obtained by drying spores are used.

The starch used in the present invention includes not only natural starch obtained from potato, sweet potato, cassava, wheat, corn, sago, rice, etc., but also modified starch obtained by subjecting it to hydrolysis, oxidation and the like. , Acetylation, methylation, allylation, carboxymethylation, hydroxypropylation and the like, and also include starch derivatives. Specific examples of modified starch and starch derivatives include dextrin, pregelatinized starch, and amylose. , Amylopectin, oxidized starch, kraft starch, pregelatinized hydroxypropyl starch and the like. Among them, it is preferable to use pregelatinized starch.

[0007] insecticidal and miticidal agent of the present invention is usually the proportion of natural enemies filamentous fungus insecticide-acaricide ^{10 11} spores from 10 ⁵ in the number of spores per 1g, preferably from 10 ⁶ 10
¹⁰ spores and a starch content of 0.01 to 90% by weight, preferably 0.02 to 80% by weight. Also,
In the insecticide and acaricide of the present invention, natural enemy filamentous fungi and starch in total amount,

It is contained in an amount of 0.001 to 100% by weight, preferably 0.01 to 100% by weight. Here, the weight of the natural enemy filamentous fungus is based on the weight of the dried spores. The insecticide of the present invention
The acaricide contains a carrier such as a solid carrier and a liquid carrier, a surfactant, and other adjuvants for formulation, if necessary, in addition to the natural enemy fungus and starch.

Examples of the solid carrier include kaolin, attapulgite, bentonite, acid clay, pyrophyllite, talc, diatomaceous earth, white carbon, silicate earth,
Examples thereof include clay minerals such as calcite, water-soluble compounds such as urea and ammonium sulfate, and vegetable powders such as walnut powder and kelp. As the liquid carrier, for example, water, benzene, toluene, xylene, aromatic hydrocarbons such as methylnaphthalene, isopropyl alcohol, ethylene glycol, alcohols such as ethylene glycol monoether, acetone, ketones such as cyclohexanone, Vegetable oils such as soybean oil and cottonseed oil, dimethyl sulfoxide, acetonitrile, cyclohexane and the like can be mentioned.

Examples of the surfactant include anionic surfactants such as sodium alkylbenzene sulfonate, alkyl sulfate, alkyl (aryl) sulfonate, dialkyl sulfosuccinate, and polyoxyethylene alkyl aryl ether phosphate. Activators, nonionic surfactants such as polyoxyethylene polyoxypropylene tristyryl phenyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene polyoxypropylene block copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, silicone Surfactants and the like.

Other adjuvants for pharmaceuticals include, for example,
Emulsifiers, dispersants, stabilizers, wetting agents, suspending agents, spreading agents,
Penetrants, fungicides, fungicides, etc., specific examples of emulsifiers, lignin sulfonate, alginates, specific examples of dispersants, polyvinyl alcohol, gum arabic, carboxymethyl cellulose, specific examples of stabilizers Specific examples of isopropyl acid phosphate, polyoxyethylene resin acid (ester), abietic acid salt, and wetting agent include dinaphthylmethane disulfonate.

The insecticide / miticidal agent of the present invention may further comprise a carrier such as a solid carrier or a liquid carrier, if necessary, in addition to the natural enemy filamentous fungus and starch.
It is formulated in the form of a wettable powder, a suspending agent and the like by a conventional method using a surfactant and other pharmaceutical auxiliaries, but a wettable powder formulated using a clay mineral is preferred. The wettable powder is, for example, 30 to 80% by weight in total of natural enemy filamentous fungi and starch, 10 to 50% by weight of clay mineral, and 5 to 3% of surfactant.
It contains 0% by weight.

In the insecticide / miticidal method of the present invention, the above-mentioned insecticide / miticidal agent of the present invention is usually used.
Each of the natural enemy filamentous fungi and the starch may be used successively without prior mixing.

In the insecticidal / miticidal method of the present invention, it is convenient to apply the above-mentioned insecticidal / miticidal agent of the present invention as it is or after appropriately diluting it with water. The application concentration and application amount vary depending on various conditions such as the type of pest, the growth stage of the pest, and weather conditions. However, the application amount is generally 5 × 10 ⁶ to 5 × 10 ¹² spores of natural enemy filamentous fungi per are.
Preferably 5x10 ¹¹ spores from 5x10 ^7, also starch 5G～100g, preferably 25G～50g. When the wettable powder is used after being diluted with water, the concentration of the natural enemy fungi is generally 10 ² to 10 ⁸ spores per ml, preferably 10 ³ to 10 ⁷ spores per ml, in the spray solution.
The concentration of spores or starch is 100 ppm to 2000 ppm,
It is preferably diluted to 500 ppm to 1000 ppm before application.

In the method for killing insects and mites of the present invention, when applying a chemical, if necessary, a sprayer such as a power sprayer, a shoulder sprayer, a hand sprayer or the like should be used to protect the insects from the pests, the habitat of the insects, and the insects. Spray on plants, etc. Further, at the time of application, the composition can be mixed with other insecticides, acaricides, fertilizers, fungicides, plant growth regulators and the like which do not adversely affect the natural enemy filamentous fungi.

The target pests to be controlled by the insecticidal / miticidal method of the present invention include, for example, spider mites (eg, red mite, apple spider mite, red spider mite, Kanzawa spider mite) and rust mites (eg, red mite, tomato rust mite). , Hemiptera pests such as whiteflies (such as whiteflies, silverleaf whiteflies and tobacco whiteflies), aphids (such as cotton aphids and peach aphids); , Pterodactyl pests such as Lepidoptera, Thrips palmi, Thrips palmiflora, etc., Diptera pests, such as Lepidoptera (Lepidoptera: Tortricidae), Lepidopteran pests, such as Scarab beetles, Artemisia, etc .; Beetle, etc.) Coleoptera pests such as and the like. Further, as plants to be protected from these pests, for example, fruit trees such as tangerines, apples, pears, peaches, grapes, figs, and cherry, tea and eggplants, cucumber, tomato, spinach, cabbage, vegetables such as parsley, Fruits such as strawberries, melons and watermelons, flowering trees such as roses, chrysanthemums, carnations, cherry and camellia, and houseplants such as begonia are included.

[0017]

The present invention will be described below in more detail with reference to examples. First, a formulation example of the insecticide / miticidal agent of the present invention will be described.
In the following formulation examples, parts represent parts by weight. Formulation Example 1 Radiolight # 200 (diatomaceous earth manufactured by Showa Chemical Industry) 25
Parts, 50 parts of Matsunoline 500 (pregelatinized starch manufactured by Matsutani Chemical Industry), 15 parts of Solpol 5060 (sodium alkylbenzenesulfonate, surfactant manufactured by Toho Chemical), and Soprofol 796 / P (polyoxyethylene polyoxypropylene tristyrylphenyl) ethers, Rhodia Nicca Ltd. surfactant) to a mixture 1g of 10 parts at a rate of 10 ⁹ spores Bachishiriumu-Rekani to obtain a wettable powder by mixing and milling.

Formulation Example 2 30 parts of Carplex # 80 (white carbon manufactured by Shionogi Pharmaceutical Co., Ltd.), 50 parts of matsunoline 500 (pregelatinized starch manufactured by Matsutani Chemical Industry) and sorbol 5050 (dialkylsulfosuccinate, surfactant manufactured by Toho Chemical Co., Ltd.) 2) 1 g of the mixture of 20 parts was mixed and pulverized with Verticillium lecani at a ratio of 10 ⁹ spores to obtain a wettable powder.

Formulation Example 3 Carplex # 80 (white carbon manufactured by Shionogi & Co., Ltd.), 10 parts, talc GTA (talc manufactured by Kunimine Industries) 2
0 parts, Matsunorin 500 (Matsutani Chemical Ltd. pregelatinized starch) 50 parts of Sorpol 5050 (a dialkyl sulfosuccinate, manufactured by TOHO Chemical Industry surfactant) to a mixture 1g of 20 parts at a rate of 10 ⁹ spores Bachishiriumu-Rekani , Mixed and pulverized to obtain a wettable powder. Are ground and mixed to obtain a wettable powder.

Formulation Example 4 Carplex # 80 (10 parts of white carbon manufactured by Shionogi & Co., Ltd.), 15 parts of Kunigel V1 (bentonite manufactured by Kunimine Industries), 45 parts of Matsunoline 500 (pregelatinized starch manufactured by Matsutani Chemical Industry) and 50 parts of Solpol 5060 (alkylbenzene) A mixture of 20 parts of sodium sulfonate, a surfactant manufactured by Toho Chemical Co., Ltd. and 10 parts of soprofol 796 / P (a polyoxyethylene polyoxypropylene tristyrylphenyl ether, a surfactant manufactured by Rhodia Nika) was added to 1 g of a mixture of Verticillium recani at a rate of 10 ⁹ spores to obtain a wettable powder by mixing and milling.

Formulation Example 5 Carplex # 80 (white carbon manufactured by Shionogi Pharmaceutical Co., Ltd.) 17 parts, Katsumitsuyama clay (Katsumitsuyama Mining Works clay) 2
0 parts, 45 parts of Matsunoline 500 (pregelatinized starch manufactured by Matsutani Chemical Industry) and 18 parts of Solpol 5060 (sodium alkyl benzene sulfonate, surfactant manufactured by Toho Chemical)
1 part of the mixture was mixed with 10 ⁹ birchium recana.
The spores are mixed and pulverized to obtain a wettable powder.

Formulation Example 6 15 parts of Carplex # 80 (white carbon manufactured by Shionogi & Co., Ltd.), 3 Katsumitsuyama clay (Katsumitsuyama Mining Works clay) 3
0 parts, Matsunoline 500 (Matsuya Chemical Industries pregelatinized starch) 45 parts and NUC Silicone L-77
(Silicone surfactant, surfactant manufactured by Nippon Unicar)
1 part of 10 parts of the mixture is mixed with 1 part of birchium recani.
Mix and crush at a ratio of ⁰⁹ spores to obtain a wettable powder.

Next, the method for killing insects and mites of the present invention will be described in detail with reference to test examples. Test Example 1 For each of the reagents shown in Table 1, cotton aphids (Aphis g) naturally occurring in potted cucumbers in a glass greenhouse (20 to 25 ° C., 60 to 90% RH)
ossippii), 1
About 300 ml was sprayed per section. The number of adults and larvae of cotton aphids was investigated on the day before spraying, 2, 7, 14 and 21 days before spraying. Table 1 shows the results.

[0024]

[Table 1]

As is clear from the above table, when only verticillium recanis is used, the effect of controlling cotton aphid is weak, while when only starch is used, control of cotton aphid immediately after spraying is not effective. Although effective, the effect tends to decrease after 14 days and 21 days. According to the present invention, when a natural enemy filamentous fungus and starch are used in combination, 21
It was extremely effective in controlling cotton aphids after days, and showed a highly synergistic control effect particularly after 14 days and 21 days.

Test Example 2 For each of the reagents shown in Table 2, silver leaf whitefly (Bem) naturally occurring on potted tomatoes in a glass greenhouse (20 to 25 ° C., 60 to 90% RH)
isia argentifolii), about 300 ml was sprayed per section with a hand sprayer.
(1 ward, 1 pot, 3 consecutive systems) The day before spraying, 2, 7, 14, and 2
One day later, the number of adults of silver leaf whiteflies was examined.
Table 2 shows the results.

[0027]

[Table 2]

As is evident from the above table, the use of only Birchium leucani has a weak effect in controlling silver leaf whiteflies, while the use of only starch results in the control of silver leaf whiteflies immediately after spraying. Although effective in controlling, the effect tends to decrease after 14 days and 21 days. On the other hand, according to the present invention, when a natural enemy filamentous fungus and starch are used in combination, it is extremely effective for controlling silver leaf whiteflies 21 days after spraying, and exhibits a highly synergistic control effect particularly after 14 days and 21 days. Indicated.

[0029]

According to the present invention, pests can be controlled very effectively. In particular, according to the present invention, the effect is rapidly exhibited, and the effect is maintained even after a long period of time.
Furthermore, since the present invention uses natural enemies and foods, food additives and substances derived from natural products, it has extremely high safety to the environment, and requires a fast-acting effect and a sustained effect. Very useful in pest control situations.

Claims (7)

[Claims] 1. An insecticide / miticidal agent comprising a natural enemy filamentous fungus and starch as active ingredients. 2. The insecticide and acaricide according to claim 1, wherein the starch is pregelatinized starch. 3. The insecticide and acaricide according to claim 1, wherein the natural enemy filamentous fungus is Verticillium recani. 4. The insecticide and acaricide according to claim 1, further comprising a clay mineral and being a wettable powder. 5. A method for killing insects and mites using an effective amount of a natural enemy filamentous fungus and starch. 6. The insecticide and acaricide according to claim 4, wherein the starch is 3%.
A method for killing insects and mites which is diluted with water to a concentration of 00 to 2000 ppm and applied. 7. The method for killing insects and mites according to claim 5, wherein the natural enemy filamentous fungus is Verticillium recanii.