JP2003104820A - Pest controlling agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pest controlling agent excellent in water mischbility, having a high insecticidal/acaricide effect, free from trouble of chemical injuries. SOLUTION: This pest controlling agent including (i) at least one kind of water-soluble polymers selected from an extract of seaweed, a vegetable adhesive material and a viscous substance of microbial product, (ii) at least one kind of surfactants selected from surfactants based on ethers, fatty acids or phosphates, and (iii) a water-insoluble powder, has the high insecticidal/acaricide effect, and free from trouble of the chemical injuries.

Description

Detailed Description of the Invention

TECHNICAL FIELD The present invention relates to a pest control agent.

[Prior Art] Pest control agents containing water-soluble polymers are known, for example, in JP-A-58-109402, JP-A-7-126105 and JP-A-11-292716. However, these pest control agents have a weak insecticidal effect and may have a different effect depending on the spraying conditions, or when sprayed on a crop, they may adhere to leaves and cause phytotoxicity, which makes them easier to use. Was required to be improved.

[Problems to be Solved by the Invention] An object of the present invention is to provide an excellent pest control composition having a stable and high control effect against pests and less phytotoxicity and dirt to applied crops. is there.

[Means for Solving the Problems] The inventors of the present invention have remarkably exerted insecticidal and acaricidal effects by mixing a specific water-soluble polymer, a specific surfactant and a water-insoluble powder. The present invention was completed based on the new finding that it was highly stable and that the phytotoxicity was significantly reduced. That is, the present invention relates to (i) one or more water-soluble polymers selected from seaweed extract, plant mucilage and microbial mucilage,
(Ii) one or more surfactants selected from ether-based, fatty acid ester-based and phosphoric acid ester-based, and (ii
(i) A pest control agent containing a water-insoluble powder.

BEST MODE FOR CARRYING OUT THE INVENTION The seaweed extract, which is a water-soluble polymer used in the present invention, means not only a water-soluble polymer which is a mucilage extracted from algae, but also its derivative (eg, ester). Compound), and specific examples thereof include sodium alginate, propylene glycol alginate, carrageenan and the like.

[0006] The plant mucilage, which is a water-soluble polymer used in the present invention, means a mucilage obtained from plant sap, mucus contained in seeds and the like and derivatives thereof (eg, esterified products, etherified products, crosslinked products). ), As specific examples, locust bean gum, guar gum, tamarind seed gum, gum arabic, gati gum, karaya gum,
Examples thereof include tragacanth gum and tara gum.

Examples of the microbial-produced mucilage which is a water-soluble polymer used in the present invention include polysaccharides produced by microorganisms such as xanthan gum, bullan, curdlan, and welan gum. In the present invention, the above water-soluble polymers may be used alone or in combination of two or more.

The ether type surfactant which is a surfactant used in the present invention is also called an ether type nonionic surfactant, and it is a polyoxyalkylene alkyl ether, polyoxyalkylene alkylaryl ether or polyoxyalkylene arylphenyl. Examples include ether.

A specific example of the polyoxyalkylene alkyl ether is a polyoxyethylene alkyl ether obtained by adding ethylene oxide to an aliphatic alcohol having 12 to 18 carbon atoms. In the present invention, polyoxyethylene lauryl ether is particularly preferable. Alternatively, the use of polyoxyethylene oleyl ether is preferred.

The polyoxyalkylene alkylaryl ether is a polyoxyalkylene alkyl phenyl ether or polyoxyalkylene alkyl naphthyl ether which is usually obtained by adding ethylene oxide and / or propylene oxide to alkylphenol or alkylnaphthol, and specific examples thereof are Antarox 46.
1 / P (polyoxyethylene polyoxypropylene alkyl phenyl ether, trade name of Rhodia Nika), Nonal 109 (polyoxyethylene octyl phenyl ether, trade name of Toho Chemical Industry Co., Ltd.) and the like can be mentioned.

Specific examples of polyoxyalkylene aryl phenyl ethers include Newcalgen FS-1 (trade name of Takemoto Oil & Fats Co., Ltd.), Soprophor BSU (polyoxyethylene tristyryl phenyl ether, trade name of Rhodia Nikka), Soprophor 796 / P ( Examples thereof include polyoxyethylene polyoxypropylene tristyryl phenyl ether and Rhodia Nikka brand name).

The fatty acid ester type surfactant which is a surfactant used in the present invention is also called an ester type nonionic surfactant, and examples thereof include polyethylene glycol fatty acid ester and glycerin fatty acid ester.

Polyethylene glycol fatty acid ester is classified into a monoester type in which one end of polyethylene glycol is esterified with a fatty acid and a diester type in which both ends are esterified with a fatty acid. Specific examples include pegnol 14-O (mono Polyethylene glycol oleate,
Toho Chemical Industry trade name), Pegnol 24-O (polyethylene glycol dioleate, Toho Chemical Industry trade name) and the like.

Specific examples of the glycerin fatty acid ester include Sunsoft 700P-2 (caprylic acid monoglyceride, Taiyo Kagaku trade name), Sunsoft 8070 (oleic acid monoglyceride, Taiyo Kagaku trade name) and the like.

The phosphoric acid ester-based surfactants used in the present invention include aryl phosphoric acid esters and salts thereof (for example, polyoxyethylene tristyrylphenyl ether phosphoric acid and salts thereof) and alkyl ether phosphoric acid. Esters and salts thereof, polyoxyalkylene alkyl ether phosphates that are polyoxyalkylene-added phosphates, and salts thereof, S
and oprophor FL (polyoxyethylene tristyryl phenyl ether phosphate amine, Rhodia Nikka brand name) and the like.

Examples of the water-insoluble powder used in the present invention include clay, talc, calcium carbonate, bentonite, acid clay, diatomaceous earth, zeolite, pumice powder, crystalline cellulose, white carbon and the like, having a particle size of 30 μm.
It is preferably m or less.

The content of each component contained in the pest control agent of the present invention is generally (i) 20 to 60% by weight of water-soluble polymer, (ii) 15 to 30% by weight of surfactant, and (ii)
i) The water-insoluble powder is 20 to 65% by weight.

The pest control agent of the present invention may further contain a filler, a formulation auxiliary agent and the like. Examples of the extender include water-soluble carriers such as urea, boric acid, citric acid, glucose, potassium sorbate, fumaric acid, and maleic acid, and examples of the auxiliaries for preparation include a solvent, an antifungal agent, Examples include potency enhancers and coloring agents. Insecticides, fungicides, acaricides, plant growth regulators and the like can also be mixed.

The pest control agent of the present invention is usually diluted with water and applied, and the dilution ratio varies depending on the type of the target pest, stage, weather conditions, etc.
(I) 200 to 1200 ppm of water-soluble polymer, (i
The concentration is such that i) the surfactant is 150 to 600 ppm, and (iii) the water-insoluble powder is 200 to 1300 ppm. The application amount is generally about 0.1 to 0.7 g per m ^{2 of the} water-soluble polymer.

When applying the pest control agent of the present invention, if necessary, a power sprayer, a shoulder sprayer, a hand sprayer or other sprayer may be used to remove the water-diluted liquid from the pests, the habitat of the pests and the pests. Disperse on plants to be protected. In addition, when applied, it can be mixed with other insecticides, acaricides, fertilizers, fungicides, plant growth regulators and the like and applied.

Examples of pests (mites, insects, phytopathogens, etc.) controlled by applying the pest control agent of the present invention include spider mites (citrus mites, apple spider mites, spider mites, kanzawa mites, etc.), gum beetles, aphids. Small insect pests such as cotton aphid (Aphis gossypii, Aphis gossypii, pea aphid, etc.), Kamenokorokaigara, thrips (Minamio Thrips thrips, Thrips palmi thrips, Chamoeles thrips) and powdery mildew. Further, as plants to be protected from these pests, for example, fruit trees such as tangerine, apple, pear, peach, grape, sweet cherry, tea and eggplant, cucumber, tomato, strawberry, spinach, cabbage, parsley and other vegetables , Flowers of roses, chrysanthemums, carnations, sakura, camellias, flowers and trees.

The action of the pest control agent of the present invention is considered to be a physical action, and when the pest control agent is applied to pests such as spider mites, the pest control agent adheres to the pests and its action cannot be prevented. It is thought that suffocation is caused by starvation or predation by other insects or animals due to severe restrictions, or by obstruction of the respiratory system or the like by a control agent.

[0023]

EXAMPLES Next, the present invention will be described with reference to formulation examples and test examples.
As will be described in more detail, the invention is not limited to only these examples. First, formulation examples are shown. Formulation Example 1 20 parts by weight of K1A 96 (welan gum, tri-crystal brand name), 15 parts by weight of Soprophor 796 / P (polyoxyethylene polyoxypropylene tristyryl phenyl ether, Rhodia Nichika brand name), 50 parts by weight of talc and Carplex # 15 parts by weight of 80-D (white carbon, Shionogi Pharmaceutical Co., Ltd.) were uniformly mixed and pulverized to obtain a wettable powder.

Formulation Example 2 Tragant gum (manufactured by Wako Pure Chemical Industries, Ltd.) 50 parts by weight, Ant
20 parts by weight of arox 461 / P (polyoxyethylene polyoxypropylene alkylphenyl ether, Rhodia Nikka brand name), 20 parts by weight of Escalon # 200 (calcium carbonate, Sankyo Seiko brand name) and Carplex # 80-D (white) Carbon, Shionogi Pharmaceutical product name) 1
A wettable powder was obtained by uniformly mixing and pulverizing 0 part by weight.

Formulation Example 3 30 parts by weight of sodium alginate (300 to 400 cp, manufactured by Wako Pure Chemical Industries), 30 parts by weight of Soprophor BSU (polyoxyethylene tristyryl phenyl ether, Rhodia Nikka brand name), Shokoyama SP clay (clay) 25 parts by weight of Shokoyama Mining Co., Ltd. and 15 parts by weight of Carplex # 80-D (white carbon, Shionogi Pharmaceutical Co., Ltd.) were uniformly mixed and pulverized to obtain a wettable powder.

Formulation Example 4 30 parts by weight of Meipuguar CSAAM-175 (trade name of guar gum, tricrystal), NEWCOL 1103 (trade name of polyoxyethylene lauryl ether, Japanese emulsifier) 15
20 parts by weight, 45 parts by weight of Koshiyama SP clay (trade name of clay, product of Shokoyama Mining Co., Ltd.) and 10 parts by weight of Carplex # 80-D (white carbon, product name of Shionogi Pharmaceutical Co., Ltd.) are uniformly mixed and ground to obtain a wettable powder Got

Formulation Example 5 35 parts by weight of Meipro LBG Flair M-200 (locust bean gum, trade name of Sansei), Pegnol 24-O
(Polyethylene glycol dioleate, Toho Chemical Industry trade name) 10 parts by weight, Sunsoft 700P-2 (caprylic acid monoglyceride, Taiyo Chemical trade name) 10 parts by weight,
Shokozan SP Clay (Clay, Shokoyama Mining Co., Ltd. product name) 30
By weight, 15 parts by weight and 15 parts by weight of Carplex # 80-D (white carbon, Shionogi brand name) were uniformly mixed and pulverized to obtain a wettable powder.

Formulation Example 6 50 parts by weight of tragacanth gum (manufactured by Wako Pure Chemical Industries, Ltd.), Sop
20 parts by weight of rophor FL (97% of polyoxyethylene tristyryl phenyl ether phosphate amine, Rhodia Nikka brand name), 20 parts by weight of Shokoyama SP clay (clay, Shokoyama mining company name) and Carplex # 80
A wettable powder was obtained by uniformly mixing and grinding 10 parts by weight of -D (white carbon, Shionogi brand name).

Comparative agent 1 50 parts by weight of sodium polyacrylate, Solpol 50
60 (sodium dodecylbenzene sulfonate 45% +
Inorganic phosphate 25% + white carbon 30%, Toho Chemical Industry trade name 30 parts by weight, Shokoyama SP clay (clay, Shokoyama mining trade name) 10 parts by weight and Carplex # 80-D (white carbon, Shionogi Pharmaceutical product name)
A wettable powder was obtained by uniformly mixing and grinding 10 parts by weight.

Comparative agent 2 60 parts by weight of gelatin, Sorpol 2495G (polyoxyethylene alkyl allyl ether ammonium sulfate 6
8% + polyoxyethylene nonyl phenyl ether 12
% + Propanol 15% + methanol 5%, Toho Chemical Industry trade name) 10 parts by weight, Shokoyama SP clay (clay, Shokoyama mining shop trade name) 20 parts by weight and Carplex # 8
A wettable powder was obtained by uniformly mixing and pulverizing 10 parts by weight of 0-D (white carbon, Shionogi Pharmaceutical Co., Ltd.).

Next, the effectiveness of the pest control agent of the present invention will be shown by test examples. Test Example 1: Controlling test for green mite kanzawa mites Planting kidney beans (without vine) in a plastic pot having a diameter of 7 cm and a height of 10 cm and inoculating kanzawa mites,
After 24 hours, the dead insects are removed, and the control agents and comparative agents obtained in Formulation Examples 1 to 6 are diluted to a predetermined concentration and sprayed on the kidney beans by hand spraying in an amount sufficient to drip from the leaves. After 24 hours, the dead mites of Kanzawa mites ♀ Number of adults investigated. (1 ward, 1 pot, 3 continuous control) The mortality rate was calculated by dividing the number of dead insects after 24 hours by the number of surviving adults before spraying and multiplying by 100. The results are shown in Table 1.

[0032]

[Table 1] The pesticides of the present invention of Formulation Examples 1 to 6 were found to have high acaricidal efficacy, and no phytotoxicity was observed in any of them.
On the other hand, the acaricidal effect of the comparative agent was not sufficient.

Test Example 2: Control test of cucumber against cotton aphid Cucumber was planted in a plastic pot having a diameter of 7 cm and a height of 10 cm, and the cotton aphid was inoculated and sufficiently grown. After counting the number of cotton aphids parasitizing on cucumbers, the diluted solutions of Formulation Examples 1 and 4 were sprayed onto the cucumbers by hand spray in an amount sufficient to drip from the leaves, and after 24 hours, the number of dead cotton aphids was examined. (1 ward 1
(3 consecutive pots) The mortality rate was calculated by dividing the number of dead insects after 24 hours by the number of living adults before spraying and multiplying by 100. The results are shown in Table 2.

[0034]

[Table 2]

As can be seen from the above table, the pest control agents of the present invention, Formulation Examples 1 and 4, showed a high insecticidal effect against cucumber cotton aphid.

[Effects of the Invention] The pest control agent of the present invention comprises a water-soluble polymer, which is safe for humans and the environment, as an active ingredient, and is more insecticidal than conventional water-soluble polymer formulations.・ It is a pest control agent that has a high acaricidal effect and is free from the danger of chemical damage. In addition, the pest control agent of the present invention has a physical effect, unlike chemical pesticides, it is unlikely to have drug resistance and has little effect on natural enemies.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kiyoe Hirota             4-2-1 Takashi, Takarazuka-shi, Hyogo Co., Ltd.             In Agross F-term (reference) 4H011 AC01 AC04 BA01 BA05 BB19                       BC06 BC18 BC20 DA15 DC01                       DC05 DD03 DF06 DH02 DH14

Claims (3)

[Claims] 1. (i) One or more water-soluble polymers selected from seaweed extract, plant mucilage and microbial mucilage,
(Ii) one or more surfactants selected from ether-based, fatty acid ester-based and phosphoric acid ester-based, and (ii
i) A pest control agent containing a water-insoluble powder. 2. A surfactant selected from polyoxyalkylene alkyl ether, polyoxyalkylene alkylaryl ether, polyoxyalkylene aryl phenyl ether, polyethylene glycol fatty acid ester, glycerin fatty acid ester, phosphoric acid ester and phosphoric acid ester salt. The pest control agent according to claim 1, which is the above surfactant. 3. The content of the pest controlling agent is (i) 20 to 60% by weight of the water-soluble polymer, and (ii) 15 of the surfactant.
The pest control agent according to claim 1 or 2, wherein the amount of the non-water-soluble powder (iii) is 20 to 65% by weight.