KR101214412B1 - Sustained-release agricultural formulation and controlling method of disease and pest for paddy rice using the same - Google Patents

Abstract

(Problem) For the reduction of labor force of farmhouse and reduction of discharge amount of chemicals to environment, we provide method to control major pest through water planting period by one pharmaceutical treatment before planting.
(Solution) Sustained release coating formulations obtained by coating a core material containing agrochemical active ingredients with a water-insoluble or poorly water-soluble membrane are used for water seedling and soil mixing, seeding, or seedling box treatment until seeding. By controlling the water pests that occur from the beginning of the faucet to after the discharge.

Description

Sustained-release pesticide formulation and method of controlling pests using water {STATAINED-RELEASE AGRICULTURAL FORMULATION AND CONTROLLING METHOD OF DISEASE AND PEST FOR PADDY RICE USING THE SAME}

The present invention relates to a pesticide preparation containing a medicament capable of protecting crops from pests and diseases that cause damage to crops. The present invention relates to a pesticide preparation capable of controlling pests after the extraction period and a method for controlling water pests using the same.

Pesticides are used for the purpose of protecting target crops from weeds, pests, and diseases, and the types of preparations and the timing of their treatments vary depending on the characteristics of the active ingredients and the purpose of use.

In recent years, it has been desired to facilitate the spread of pesticides due to the reduction or aging of agricultural workers. Under these circumstances, in the field of pest control, many drugs have been developed to cope with the pre-planting treatment represented by the seedling box treatment. As a result, when the main spread is required, which requires a large labor force, Less. In recent years, however, damage to the water supply after the extraction period by the stink bugs has been increasing, especially in East Japan, while pre-treatment with commercially available formulations prevented the control of copper pests. In addition, the control of the stink bug by the main distribution of the late growth of suitable medicine is unavoidable.

The present invention controls the elution of the pesticide active ingredient having a control effect against pests of rice, and also control the pests after the water extraction period difficult with conventional commercial formulations, thereby cultivating the water in a single drug treatment before seeding The task is to provide a medicament capable of controlling major pests throughout the period.

MEANS TO SOLVE THE PROBLEM The present inventors earnestly researched the dissolution property and the control effect on many dissolution-controlled pesticide formulations, and find out that the said subject can be solved by making the core material containing an active ingredient into the form of a pesticide which coat | covered with a poorly water-soluble membrane. The present invention was completed.

That is, the present invention provides a method for (1) sustained-release coating formulations obtained by coating a core material containing an active ingredient of agrochemicals with a water-insoluble or poorly water-soluble membrane, and before seeding them from a seedling seeding / mixing / treatment, treatment or seedling stage. (2) Sustained fire protection according to (1), which is effective for the control of waterborne pests occurring from the beginning of the faucet to after the discharge, and for the control of stink bugs, which are pests after the discharge period, from the beginning of the faucet. A coating formulation and a pest control method using the same.

In the present invention, rubber and wax are used as components of the coating film, and a compound having a water solubility of 10 ppm or more at 25 ° C as a pesticide active ingredient is blended into the coating film, or formula (1) below:

[Wherein X represents CH or N;

Y represents a nitro group or cyano group;

R ¹ represents a 3-pyridyl group which may be substituted by halogen, a 5-thiazolyl group which may be substituted by halogen, or a 3-tetrahydrofuryl group which may be substituted by a methyl group,

R ² is hydrogen or C _{1 -4} alkyl group;

R ³ is a group represented by NR ⁴ R ⁵ , SR ⁶ , OR ⁷ , or R ⁸ , where R ⁴ represents hydrogen or a C _1-4 alkyl group, and R ⁵ , R ⁶ , R ⁷ and R ⁸ are C _{1 -4} alkyl group);

Or a group represented by an ethylene group, trimethylene group, CH ₂ OCH ₂ , or CH ₂ N (R ⁹ ) CH ₂ in which R ² and R ⁵ , R ⁶ , R ⁷ or R ⁸ become one; and neonicotinoid) compounds: where R ⁹ is (neonicotinoid claim represented by represents a represents a C _{1 -4} alkyl group);

Formula 2:

[Wherein, Z ¹ and Z ² are the same or different and be substituted with hydrogen, sodium, potassium, a cyano group, a carbamoyl group, C _{1 -3} alkyl group with C _{1 -3} alkyl group may be substituted with one or two A group represented by a benzenesulfonyl group, a sulfo group (SO ₃ H), a SO ₃ M (M represents sodium or potassium), a sulfino group (SO ₂ H), or a SO ₂ M (M). Represents the same meaning as above);

Or Z ¹ and Z ² are taken together to represent a bond or S;

Or Z ¹ represents O, in which Z ² represents a bond with a sulfur atom to which Z ¹ is bonded.]

The present invention relates to a sustained release coating formulation and a method for controlling pests using the same, wherein the compound of (nereistoxin: nereistoxin) or a salt thereof is represented as a pesticide active ingredient.

[Embodiment of the Invention]

The present invention provides a sustained release coating formulation characterized in that the core material containing the active ingredient of the pesticide is coated with a film containing a material having a low affinity for water as a main component, and treated from the beginning of the faucet to the water extraction stage by treating it before seeding. It is a pest control method.

The basic structure of the preparation of this invention is shown in FIG. The formulation of the present invention is coated with a core material containing the active ingredient as a coating containing a material having a low affinity for water as a main component, and by adjusting the composition and amount of the coating, the elution property suitable for controlling pests of interest is realized. It is.

The coating material used in the present invention is not particularly limited, and there is no problem as long as it is generally used in the fields of medicine, pesticides, foods, cosmetics, and the like. It is preferable to use. The rubber may be either natural rubber or synthetic rubber, but synthetic rubber is more preferred. In addition, synthetic rubber latex is even more preferred. Most preferred is a synthetic rubber latex mainly composed of butadiene to be described later. In addition, the wax is more preferably a wax emulsion. When synthetic rubber latex and wax emulsion are used, it is preferable to use wax emulsion in the ratio of at least 1 with respect to synthetic rubber latex 8 by solid content weight ratio.

Arbitrary synthetic rubber latex can be used as a synthetic rubber latex used by this invention. Representative examples include styrene-butadiene rubber latex, methyl methacrylate-styrene-butadiene rubber latex, ethylene-propylene rubber latex, butadiene rubber latex, isoprene rubber latex, silicone rubber latex, and the like, which are single or a mixture of two or more thereof. It may be.

Wax emulsions used in the present invention include emulsions of waxes obtained from animals and plants or petroleum resins, such as paraffin wax emulsions, microcrystalline wax emulsions, polyolefin wax emulsions, and the like.

The pesticide active ingredient to be blended into the coating to which the present invention can be applied is not particularly limited, and for example, crothianidine, nitenpyram, thiamethoxam, dinotefuran, imidacloprid, tiacloprid, acetamiprid and caltop hydrochloride , Benzul tower, thiocylam, fipronil, ethyprolol, acetoprole, spinosad, pymetrozine, benfuracarb, carbosulphan, furathiocarb, diazinone, ethylthiomethone, propaphos, PHC, etc. Insecticides, orissastrobin, azoxystrobin, metomistrobin, thiazinyl, capropamide, diclocimet, phenoxanyl, acibenzoral S methyl, probenazole, tricyclazole, pyroquilon, isopro Fungicides, such as thiorane, furametpyr, tiflu zamide, and simeconazole, are mentioned. Especially, the compound whose water solubility in 25 degreeC is 10 ppm or more is preferable, The neonicotinoids, such as crothianidine, nitenpyram, thiamethoxam, dinotefuran, imidacloprid, thiacloprid, a caltop hydrochloride, More preferred are fungicides such as neracetoxins such as thiocylam, orissastrobin, probenazole, tricyclazole, pyroquilon, isoprothiolane, and furametpyre, and these may be used alone or in combination of two or more. You may also In addition, the sustained-release coating formulation of this invention may mix | blend the active ingredient which is the same as or different from the pesticide active ingredient mix | blended in the film according to the control objective, and may mix | blend the various adjuvant which does not have activity as a pesticide. Compounds that can be blended into the coating can be used in combination with the coating to enhance the control effect against pests occurring early in the faucet. Moreover, as a component mix | blended in and out of a film, the compound which has a weakening effect such as dimuron can also be used, Kasagamycin etc. can also be mix | blended other than a film, and can also be used for the disease control of a seedling period.

The sustained-release coating formulation of the present invention is treated before seeding, to thereby invade insect pests such as rice weevil, rice weevil, rice leaf beetle, rice larvae, rice leaf oyster fly, chlorops oryzae, and water fly (Inekkimimigiba). E) such as double-necked pests, cicada cicada larvae, inezmayokobai, white light extinction, larvae, rice extinction, half-timbered pests such as rice stink bugs, rice weed moth, bright moth, long-winged moth Obioya, Pests such as rice chestnut moth, perishable moth, rice-patterned night moth, blades of insects such as shovel beetle, direct insect pests such as half-winged rice locust, rice locust, golden apple snail, etc. It can control pests such as pests, blasting diseases, paperback disease, sesame seed disease, and white leaf blight. Especially, since it is a sustained release agent, it can control stink bug stink bugs after the discharge period. In this regard, major pest control is possible through the growing season. The spot spot stink bugs are discolored blind stink bugs, snow-patterned stink bugs stink bugs, lingoco dori kasumi kame (Lygocoris nigronasutus), Madagasuka mikame (Lygus saundersi Reuter), Makiba kasumi kame (Lygus rugulipennis Poppius), akasuji kasumi Kame (Stenotus rubrovittatus), Inorganic kasumikame (Stenodema calcaratum), Akakakukkusumikame (Stenodema rubrinerve Horvath), Nakamugikasumikame, Akahagehosomidorikasumikame (Trigonotylus caelestialium) Mulberry noriaceae, Cyme aurescens, white pattern long nori ash, Ugushiro shiro herinagakame mushi, shiro herinagakame mushi (Panaorus japonicus), Amulshiro herinagakame mushi (Panaorus csikii), etc. Dalashi Gin no Rin, Nisius plebeius Distant, Minami Hosona Kame Mushi, Long No Rin, side pattern gourd Long-nosed ash, Hirata Hyotan Nagakame Mushi (Pachybrachius luridus), Wasabi Hyota Nagakame Mushi (Pamerarma rustica), Higenagakame Mushi (Appolonius crassus), Yotsubo City Hyotan Nagakame Mushi (Eucosmetus pallicornis), Madara Nagakame Mushi (Lygaeus equestris), long stink bugs such as MIDI gourd tago hemipterus, star stink bugs such as ground stink bugs, Homoeocerus marginiventris Dohrn, rice seedlings, Harikame mush (Cletus rusticus Stal) Waist stink bugs such as thorny stink bug, two-pointed belly stink bug, barley stink bug, Lumptocorisa chinensis, Taiwan Kumo Herimamemu, Sawtooth Leg stink bug, etc. Weed stink bugs such as Stictopleurus punctatonervosus, Clown stink bugs such as Eurygaster testudinaria, Pampered stink bugs, Lino-Rin, Participated Shinno-Rin, Murasaki-Kamemushi (Carpocoris purpureipennis), Alkali-no-Rin-Na-Min (Dybowskyia reticulata), Murasaki-Shira-Hoshikame-Mushi (Eysarcoris annamita Breddin) Round Stingray, Round Stingray, Haryomorpha picus, Inekamemushi (Lagynotomus elongatus), Campanola Stingray, Full Color Stingray, Southern Full Stink Stingray, Northern Grass Stingray, Ichimonji Kamemushi (Piezodorus hybneri) A stink bug, aka kamemushi, a rice stink bug, etc. can be mentioned, and generation | occurrence | production of the spot taste by the absorption of these stink bugs can be suppressed.

In addition, by treating with chemicals before planting, it is also possible to control diseases such as heat bottles generated in the nursery.

As a specific example of the processing before seeding, seedling topdressing mixing treatment, sowing treatment, seedling processing from seedling stage to seeding, etc. are mentioned. Although there is no restriction | limiting in particular in the throughput of the sustained release coating formulation in each of these treatment methods, about 30 g-about 150 g per normal rice seedling box (about 30 cm x about 60 cm) is preferable. Sustained release coating formulations of the present invention can be used regardless of the type of seedlings, rice varieties and whether or not the rice is genetically recombined, and is treated with rice seed treatment for controlling infectious diseases of the outer skin and diseases infected through seedlings or seedlings. You may combine it with the control by other methods, such as a seedling processing, the main treatment by another agent, biological control, or physical control. Moreover, there is no problem in using this invention in normal tap water cultivation, such as a method of combining weed control and fertilization by herbicides generally performed in tap water cultivation. In preparing the sustained release coating formulations of the present invention, various auxiliaries commonly used in pesticide formulations (such as carriers, surfactants, binders, flow aids, stabilizers, etc.) may be added in addition to the rubber, wax and pesticide active ingredients. Examples of the carrier include vegetable powders (such as soy flour and wood flour), mineral powders (such as clays such as kaolin, bentonite and acidic clay, talc powders such as talc powder and feldspar powder, silica such as diatomaceous earth and mica powder), Water-soluble carriers such as ammonium sulfate and sodium bicarbonate, calcium carbonate, activated carbon and the like. The carrier may be used alone or in combination of two or more thereof. As surfactant, polyoxyethylene polyoxypropylene block polymer, lignin sulfonate, alkylbenzene sulfonate, alkylnaphthalene sulfonate, etc. are mentioned, As a binder, alpha starch, polyvinyl alcohol, carboxymethylcellulose, etc. can be used for a flow aid. As white carbon etc. are mentioned.

The sustained release coating formulation of the present invention is prepared by a method of coating rubber and wax on a core material containing an agrochemical active ingredient in a conventional manner, and in particular, preparing a granular composition containing the active ingredient in advance, Methods of coating a mixture of rubber and wax are suitable.

There may be several forms for the shape of the formulation. Various forms, such as spherical shape, a cylindrical shape, a pellet type, a rectangular parallelepiped shape, a disk shape, and a string type, are mentioned. Structurally, what is necessary is just to have the structure which coat | covered the core material containing agrochemical active component with rubber | gum and wax.

The granular composition can be prepared using a general method. For example, various auxiliary agents and pesticide active ingredients are mixed, mixed with a suitable amount of water, kneaded, and extruded through a screen (extrusion granulation method), spraying and assembling a binder solution while rolling powder (electric granulation method). And a method of imparting a fluid motion to the raw material powder using a stirring blade or the like and spraying the binder solution to assemble (stirring granulation method).

The mixture of rubber and wax covering the granular composition may be blended with the active ingredient which is the same as or different from the pesticide active ingredient blended into the granular composition, if necessary, or various auxiliary agents having no activity as a pesticide may be blended. In this case, it is preferable to coat the granular composition with a pesticide active ingredient or auxiliary agent to a mixture of rubber and wax to form a uniform suspension.

Moreover, about the preparation after coating, the active ingredient same or different from the pesticide active ingredient mix | blended in the granular composition may be mix | blended as needed, and the various adjuvant which does not have activity as a pesticide can also be mix | blended. In this case, the method which sprays the suspension which mixed these components to the coating formulation, and dries this, the method of attaching the mixed powder of these components to a coating formulation while spraying water or a binder solution, etc. are preferable.

According to the technique, the sustained release coating formulation of the present invention can be effectively suppressed and treated prior to seeding even for formulations in which a weakness against rice is a problem in general formulations due to problems such as properties of agrochemical active ingredients or content in the formulation. It is provided as a suitable formulation.

The blending ratio of each component in the sustained release coating formulation of the present invention is 100 parts by weight of the entire formulation, 1 to 50 parts by weight of the active ingredient of the pesticide, preferably 1 to 30 parts by weight, and 5 to 50 parts by weight of the rubber and wax as a mixture. Part, Preferably it is 5-30 weight part, 0-94 weight part of carriers, Preferably it is 40-85 weight part.

Compound [I] represented by the above formula (1) is usually understood as a neonicotinoid agent. In the symbol of compound [I], halogen represents fluorine, chlorine, bromine, and iodine, and chlorine is especially preferable. C _{1 -4} alkyl group is represents methyl, ethyl, n- propyl, isopropyl, n- butyl, isobutyl, s- butyl, t- butyl, a methyl group and an ethyl group are preferred, and among them, a methyl group is preferred.

As the compound [I] represented by the formula (1), crothianidine, nitenpyram, thiamethoxam, dinotefuran, imidacloprid, and thiacloprid are preferable.

Of the symbols of the compound [II] represented by the formula 2, C _{1 -3} alkyl group is methyl, ethyl, n- represents a propyl, isopropyl.

Compound [II] represented by the formula (2) or a salt thereof is generally understood as a neraytoxin. As the compound [II], a cal top and thiocylam are preferable. The acid portion of the salt is not particularly limited as long as it forms a salt with the compound [II], but hydrochloric acid, sulfuric acid, oxalic acid and the like are preferable.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the basic structure of the formulation of this invention.

[Example]

Next, although an Example and a test example are given and this invention is demonstrated in detail, this invention is not limited to these Examples.

Example  One

After mixing 5.2 parts of crothianidine, 0.8 parts of polyoxyethylene polyoxypropylene block polymer, 3.5 parts of alpha starch, and 90.5 parts of clay, the mixture was kneaded with 15 parts of water, and a screen having a hole diameter of 0.9 mm was used. And assembled. 60 parts of crotianidine nuclear granules obtained by drying and sieving the granulated material were taken, and styrene-butadiene rubber latex and paraffin wax were mixed at a solid ratio of 4: 1 by using a granulated granulation coating device Granyurex (GX20). 9 parts of coating was carried out as solid content, and the sustained-release crotyanidine granules were obtained.

Test Example  One

Effect on Stink Bugs in Seedling Box Processing through Pots

Test Methods

Rice (Nihonbare) 2.5 planted in a paper pot was sprayed with a significant amount of the formulation shown in Example 1 on the soil surface near the abandonment of the seedlings. After about 7 days of watering, the entire rice abandonment was covered with a goth, and 10 adults of Trigonotylus caelestialium were spun into the goth. Death and death were judged 6 days after spinning, and spotting was also examined at harvest.

Test result

As shown in Table 1, application of the seedling box application of the said formulation showed high pesticidal activity with respect to this pest, and it turned out that it suppresses the generation of the speckled rice by a water absorption.

Efficacy on Spotted Stink Bug by Treating Seedling Box Throughput (mg a.i./aeration) Pest mortality after 6 days of radiation (%) Spot percentage (%) Crotianidine granules 2.25 95 0.7 Not processed - 5 9.4

Test Example  2

Effect on Rice Weevil in Seedling Box Treatment by Packaging

Test Methods

A large amount of the preparations shown in Example 1 was scattered and transplanted on the soil surface near the abandoned area of 2.5 seedlings (Hinohikari) planted in a normal seedling box. After transplantation, about 45 abandoned rice plants were surrounded by bone tin, and 10 rice weevil adults were spun into them twice a week. After 8 days, 15 days and 22 days after treatment, the percentage of leaves damaged by rice weevil adults was examined for 20 abandoned rice, and after 42 days of treatment, the treated rice was excavated to investigate the next generation larval density.

Test result

As shown in Table 2, it was found that application of the seedling box of the preparation suppresses the extinction caused by adult species and also suppresses the next generation density.

Efficacy on Rice Weevil by Treating Seedling Box drugs Throughput
(Mg ai / aeration) Percentage of leaves damaged (%) Next Generation Survival Pests After 8 days 15 days later 22 days later Marie / 12 abandoned Sustained release crotyanidine granules 0.85 4 7 24 6 Not processed - 36 54 74 107

Test Example  3

Effect of White Light Annihilation on Seedling Box Processing by Packaging

Test Methods

A large amount of the preparations shown in Example 1 was scattered and transplanted on the soil surface near the abandoned area of 2.5 seedlings (Hinohikari) planted in a normal seedling box. Twenty-four, thirty-one, thirty-eight, thirty-five, and fifty days later, 20 bags of rice were shaken off and parasitic white-backed extinct pests were examined.

Test result

As shown in Table 3, it turned out that the seedling box application of this preparation suppresses this pest density.

Efficacy on white light extinction by seedling processing drugs Throughput
(Mg ai / aeration) Pest control (Marie) / 120 abandoned 24 days later 31 days later After 38 days 45 days later 50 days later Sustained release crotyanidine granules 0.85 3 18 0 4 8 Not processed 387 349 269 61 323

Example  2

60 parts of crotianidine nuclear granules obtained in Example 1 were taken, and a styrene-butadiene rubber latex and a paraffin wax were mixed at a solid content ratio of 4: 1 by a solid granulation coating device Granurex (GX20) as a solid content. By coating 6 parts to obtain sustained-release crotyanidine granules.

Test Example  4

Effect on Stink Bugs in Seedling Box Processing through Pots

Test Methods

Rice (Nihonbare) 2.5 planted in a paper pot was sprayed with a significant amount of the formulation shown in Example 2 on the soil surface near the abandonment of the seedlings. After about 7 days of watering, the entire rice abandonment was covered with a goth, and 10 adult spotted stinging rhinoceros were discharged in the goth. Life and death judgments were made 6 days after the spinning, and spotting was also examined at harvest.

Test result

As shown in Table 4, application of the seedling box application of the said formulation showed high pesticidal activity with respect to this pest, and it turned out that it suppresses the generation of the speckled rice by a water absorption.

Efficacy on Spotted Stink Bug by Treating Seedling Box Throughput (mg a.i./aeration) Pest mortality after 6 days of radiation (%) Spot percentage (%) Crotianidine granules 2.25 100 0.7 Not processed - 19 15.5

Test Example  5

Effects of Rice Weevil on the Treatment of Seedling Box by Packaging

Test Methods

A large amount of the preparations shown in Example 2 was scattered and transplanted on the surface of the soil near the abandonment of 2.5 seedlings (hinohikari) planted in a conventional seedling box. After transplantation, about 45 abandoned rice plants were surrounded by bone tin, and 10 rice weevil adults were spun into them twice a week. After 8 days, 14 days, and 21 days after treatment, the percentage of leaves damaged by rice weevil adults was examined for 20 abandoned rice, and after 42 days of treatment, the treated rice was excavated to investigate the next generation larval density.

Test result

As shown in Table 5, it was found that application of the seedling box of the preparation suppresses the extinction caused by adult species and also suppresses the next generation density.

Efficacy on Rice Weevil by Treating Seedling Box drugs Throughput
(Mg ai / aeration) Percentage of leaves damaged (%) Next Generation Survival Pests After 8 days 14 days later 21 days later Marie / 12 abandoned Sustained release crotyanidine granules 2.25 6 4 2 One Not processed - 14 46 39 86

Example  3

60 parts of crotianidine nuclear granules obtained in Example 1 were taken, and styrene-butadiene rubber latex, paraffin wax, and fine silica powder were obtained in a solid ratio of 80: 20: 5 using a composite granulation coating device Granurex (GX20). 9 parts of coating is carried out as solid content, and the sustained-release crothianidine granules are obtained.

Test Example  6

Effect on Stink Bugs in Seedling Box Processing through Pots

Test Methods

Rice (Nihonbare) 2.5 planted in a paper pot was sprayed with a significant amount of the formulation shown in Example 3 on the soil surface near the abandonment of the seedlings. After about 7 days of watering, the entire rice abandonment was covered with a goth, and 10 adult spotted stinging rhinoceros were discharged in the goth. Death and death were judged 6 days after spinning, and spotting was also examined at harvest.

Test result

As shown in Table 6, application of the seedling box application of the said formulation showed high pesticidal activity with respect to this pest, and it turned out that it suppresses the generation of the speckled rice by a water absorption.

Efficacy on Spotted Stink Bug by Treating Seedling Box Throughput (mg a.i./aeration) Pest mortality after 6 days of radiation (%) Spot percentage (%) Crotianidine granules 2.25 86 2.9 Not processed - 19 15.5

Test Example  7

Effects of Rice Weevil on the Treatment of Seedling Box by Packaging

Test Methods

A large amount of the preparations shown in Example 3 was scattered and transplanted on the surface of the soil near the abandonment of 2.5 seedlings (Hinohikari) planted in a normal seedling box. After transplantation, about 45 abandoned rice plants were surrounded by bone tin, and 10 rice weevil adults were spun into them twice a week. After 8 days, 14 days, and 21 days after treatment, the percentage of leaves damaged by rice weevil adults was examined for 20 abandoned rice, and after 42 days of treatment, the treated rice was excavated to investigate the next generation larval density.

Test result

As shown in Table 7, it was found that the application of the seedling box application of the preparation suppresses the extinction caused by adult species and also suppresses the next generation density.

Efficacy on Rice Weevil by Treating Seedling Box drugs Throughput
(Mg ai / aeration) Percentage of leaves damaged (%) Next Generation Survival Pests After 8 days 14 days later 21 days later Marie / 12 abandoned Sustained release crotyanidine granules 2.25 3 One One 0 Not processed - 14 46 39 86

[Effects of the Invention]

As described above, according to the present invention, it is possible to suppress the elution of the pesticide active ingredient having a control effect against pests of water, and to control pests after the extracting period, which was difficult with conventional commercial formulations, and to control them. A single drug treatment can provide a drug capable of controlling major pests through the water growing period.

Claims (10)

Heartwood containing crothianidine ((E) -1- (2-chloro-1,3-thiazol-5-ylmethyl) -3-methyl-2-nitroguanidine) as a water-insoluble or poorly water-soluble membrane A sustained release coating formulation obtained by coating,
It is effective for the control of water and pests that occur from the beginning of the faucet to after the discharge by using it for the treatment of seedlings, seeding, mixing, seedlings, or seedlings from seedlings until planting.
A sustained-release coating formulation effective for controlling stink bugs, which are pests after the water extraction period, in addition to pests in the middle stage from the beginning of the faucet, using rubber and wax as components of the coating membrane. The sustained release coating formulation according to claim 1, wherein, in addition to crothianidine, a compound having a water solubility of 10 ppm or more at 25 ° C is blended into the coating as an agrochemical active ingredient. The sustained-release coating formulation according to claim 2, wherein the compound represented by the following formula (2) or a salt thereof is formulated into the coating using the pesticide active ingredient:
(2)

[Wherein, Z ¹ and Z ² are the same or different and be substituted with hydrogen, sodium, potassium, a cyano group, a carboxylic which one or two may be substituted with C _1-3 alkyl carbamoyl group, C _1-3 alkyl group A group represented by a benzenesulfonyl group, a sulfo group (SO ₃ H), a SO ₃ M (M represents sodium or potassium), a sulfino group (SO ₂ H), or a SO ₂ M (M). Represents the same meaning as above);
Or Z ¹ and Z ² are taken together to represent a bond or S;
Or Z ¹ represents O, wherein Z ² represents a bond with a sulfur atom to which Z ¹ is bonded. A method for controlling water pests, which occurs from the beginning of water tap to after the water is discharged by using the sustained-release coating formulation according to claim 1 for treating seedling seedlings, mixing, seedling, or seedlings until seedling. A pest control method using the sustained release coating formulation according to any one of claims 1 to 3. delete delete delete delete delete

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