JP2014024830A - Delphacidae control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a Delphacidae control method.SOLUTION: The Delphacidae control method includes a step, in transplanting culture of rice, for applying to the ground for raising rice seedlings an effective amount of a compound represented in formula (I) (each symbol in the formula is as defined in the description), or an effective amount of a Delphacidae control composition containing a compound represented in formula (I) and one or more compounds selected from group (A): isotianil, probenazole, tiadinil, tricyclazole, orysastrobin and pyroquilon. This Delphacidae control method has an excellent control effect for Delphacidae.

Description

  The present invention relates to a method for controlling planthoppers.

  Since planthoppers have a great influence on the yield of rice, their control is required in rice cultivation, and various drugs that can be used for controlling planthoppers are known (for example, Patent Document 1 and (See Patent Document 2). However, the effect of the control method using these chemicals is not always sufficient, and a control method having a higher effect has been demanded.

JP-A 61-267575 JP-A-63-316771

  An object of the present invention is to provide a method for controlling planthoppers.

［式中、
Ｒ¹は、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基、１個以上のハロゲン原子を有していてもよいＣ２−Ｃ４アルケニル基、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルコキシ基、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ３アルキルスルファニル基、シアノ基、ハロゲン原子又はＲ⁴を表し、
ｎは、０〜３のいずれかの整数を表し、
Ｒ⁴は、以下の式で示されるＲ^4a及びＲ^4bのいずれかの基

｛式中、
Ｒ^5a及びＲ^5bは同一又は相異なり、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルコキシ基、シアノ基又はハロゲン原子を表し、
Ｚ^a及びＺ^bは同一又は相異なり、０、１又は２を表し、
Ｒ^5a及びＲ^5bがそれぞれ２個ある場合、それぞれのＲ^5a及びＲ^5bは同一又は相異なっていてもよい。｝を表し、
Ｒ²は、以下の式で示されるＲ^2a、Ｒ^2b及びＲ^2cのいずれかの基

｛式中、
Ｒ^3a及びＲ^3bは同一又は相異なり、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基又はハロゲン原子を表し、
Ｘ^a及びＸ^bは同一又は相異なり、０又は１を表す。｝を表す。
なお、ｎが２又は３である場合、複数のＲ¹は互いに相異なっていてもよい。］で示される化合物の有効量を、イネの育苗地に施用する工程を有するウンカ類の防除方法。
［２］ 前記式（Ｉ）で示される化合物が、当該式（Ｉ）において、
Ｒ²が、以下の式で示されるＲ^2a及びＲ^2bのいずれかの基

［式中、
Ｒ^3a及びＲ^3bは同一又は相異なり、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基又はハロゲン原子を表し、
Ｘ^a及びＸ^bは同一又は相異なり、０又は１を表す。］である化合物である［１］に記載のウンカ類の防除方法。
［３］ 式（Ｉ）で示される化合物の有効量を、イネの移植５日前〜２日前に施用する［１］又は［２］に記載のウンカ類の防除方法。
［４］ イネの移植栽培において、式（Ｉ）

［式中、
Ｒ¹は、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基、１個以上のハロゲン原子を有していてもよいＣ２−Ｃ４アルケニル基、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルコキシ基、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ３アルキルスルファニル基、シアノ基、ハロゲン原子又はＲ⁴を表し、
ｎは、０〜３のいずれかの整数を表し、
Ｒ⁴は、以下の式で示されるＲ^4a及びＲ^4bのいずれかの基

｛式中、
Ｒ^5a及びＲ^5bは同一又は相異なり、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルコキシ基、シアノ基又はハロゲン原子を表し、
Ｚ^a及びＺ^bは同一又は相異なり、０、１又は２を表し、
Ｒ^5a及びＲ^5bがそれぞれ２個ある場合、それぞれのＲ^5a及びＲ^5bは同一又は互いに相異なっていてもよい。｝を表し、
Ｒ²は、以下の式で示されるＲ^2a、Ｒ^2b及びＲ^2cのいずれかの基

｛式中、
Ｒ^3a及びＲ^3bは同一又は相異なり、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基又はハロゲン原子を表し、
Ｘ^a及びＸ^bは同一又は相異なり、０又は１を表す。｝を表す。
なお、ｎが２又は３である場合、複数のＲ¹は互いに相異なっていてもよい。］で示される化合物と、群（Ａ）より選ばれる１種以上の化合物とを含有するウンカ類防除組成物の有効量を、イネの育苗地に施用する工程を有するウンカ類の防除方法。
群（Ａ）：イソチアニル、プロベナゾール、チアジニル、トリシクラゾール、オリサストロビン及びピロキロンからなる群。
［５］ 前記式（Ｉ）で示される化合物が、当該式（Ｉ）において、
Ｒ²が、以下の式で示されるＲ^2a及びＲ^2bのいずれかの基

［式中、
Ｒ^3a及びＲ^3bは同一又は相異なり、１個以上のハロゲン原子を有していてもよいＣ１−Ｃ４アルキル基又はハロゲン原子を表し、
Ｘ^a及びＸ^bは同一又は相異なり、０又は１を表す。］である化合物である［４］に記載のウンカ類の防除方法。
［６］ 式（Ｉ）で示される化合物と、群（Ａ）より選ばれる１種以上の化合物との含有量の比が、重量比で１０：１〜１：１００であるウンカ類防除組成物を用いる［４］又は［５］に記載のウンカ類の防除方法。
［７］ ウンカ類防除組成物の有効量を、イネの移植５日前〜２日前に施用する［４］〜［６］のいずれかに記載のウンカ類の防除方法。
［８］ ウンカ類が、トビイロウンカ、セジロウンカまたはヒメトビウンカである［１］〜［７］のいずれかに記載のウンカ類の防除方法。 As a result of intensive studies on methods effective for controlling planthoppers, the present inventors have found that in transplanting cultivation of rice, an effective amount of a compound represented by the following formula (I) or a compound represented by the following formula (I) It has been found that planthoppers can be controlled by applying an effective amount of a planthopper control composition containing at least one compound selected from the following group (A) to rice seedlings.
That is, the present invention is as follows [1] to [8].
[1] In transplantation cultivation of rice, the formula (I)

[Where:
R ¹ has a C1-C4 alkyl group which may have one or more halogen atoms, a C2-C4 alkenyl group which may have one or more halogen atoms, and one or more halogen atoms. An optionally substituted C1-C4 alkoxy group, an optionally substituted C1-C3 alkylsulfanyl group, a cyano group, a halogen atom or R ⁴ ;
n represents any integer of 0 to 3,
R ⁴ represents any group of R ^4a and R ^4b represented by the following formula:

{Where,
R ^5a and R ^5b are the same or different and are each a C1-C4 alkyl group optionally having one or more halogen atoms, a C1-C4 alkoxy group optionally having one or more halogen atoms, cyano Represents a group or a halogen atom,
Z ^a and Z ^b are the same or different and represent 0, 1 or 2,
When there are two R ^5a and R ^5b , each R ^5a and R ^5b may be the same or different. },
R ² represents any group of R ^2a , R ^2b and R ^2c represented by the following formula:

{Where,
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. }.
Incidentally, when n is 2 or 3, a plurality of R ¹ may be different from each other. ] The control method of the planthopper which has the process of applying the effective amount of the compound shown by this to the rice seedling nursery.
[2] The compound represented by the formula (I) is represented by the formula (I):
R ² is any group of R ^2a and R ^{2b represented} by the following formula:

[Where:
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. ] The method for controlling planthoppers according to [1], which is a compound.
[3] The method for controlling planthoppers according to [1] or [2], wherein an effective amount of the compound represented by the formula (I) is applied 5 to 2 days before transplanting rice.
[4] In transplantation cultivation of rice, the formula (I)

[Where:
R ¹ has a C1-C4 alkyl group which may have one or more halogen atoms, a C2-C4 alkenyl group which may have one or more halogen atoms, and one or more halogen atoms. An optionally substituted C1-C4 alkoxy group, an optionally substituted C1-C3 alkylsulfanyl group, a cyano group, a halogen atom or R ⁴ ;
n represents any integer of 0 to 3,
R ⁴ represents any group of R ^4a and R ^4b represented by the following formula:

{Where,
R ^5a and R ^5b are the same or different and are each a C1-C4 alkyl group optionally having one or more halogen atoms, a C1-C4 alkoxy group optionally having one or more halogen atoms, cyano Represents a group or a halogen atom,
Z ^a and Z ^b are the same or different and represent 0, 1 or 2,
When there are two R ^5a and R ^5b , each R ^5a and R ^5b may be the same or different from each other. },
R ² represents any group of R ^2a , R ^2b and R ^2c represented by the following formula:

{Where,
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. }.
Incidentally, when n is 2 or 3, a plurality of R ¹ may be different from each other. ] The control method of the planthopper which has the process of applying the effective amount of the planthopper control composition containing the compound shown by 1 and 1 or more types of compounds chosen from a group (A) to a rice seedling raising place.
Group (A): A group consisting of isothianyl, probenazole, thiazinyl, tricyclazole, orisatrobin and pyroxylone.
[5] The compound represented by the formula (I) is represented by the formula (I):
R ² is any group of R ^2a and R ^{2b represented} by the following formula:

[Where:
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. ] The method for controlling planthoppers according to [4], which is a compound.
[6] The planthopper control composition in which the ratio of the content of the compound represented by the formula (I) and one or more compounds selected from the group (A) is 10: 1 to 1: 100 by weight. [4] or [5] method for controlling planthoppers according to [5].
[7] The method for controlling planthoppers according to any one of [4] to [6], wherein an effective amount of the planthopper control composition is applied 5 to 2 days before transplanting rice.
[8] The planthopper control method according to any one of [1] to [7], wherein the planthopper is a brown planthopper, white-spotted planthopper, or a brown planthopper.

  According to the present invention, planthoppers can be controlled.

  The planthopper control method of the present invention comprises an effective amount of a compound represented by the above formula (I) (hereinafter referred to as the present mesoionic compound) or a compound represented by the above formula (I) in transplanting cultivation of rice. And an effective amount of a planthopper control composition (hereinafter referred to as the present control composition) containing at least one compound selected from the group (A) (hereinafter referred to as the present compound A). It has the process applied to the nursery of this.

In the formula (I), examples of the substituents represented by R ¹ , R ^2a , R ^2b , R ^2c , R ^3a , R ^3b , R ^4a , R ^4b , R ^5a and R ^5b are as follows. It is done.

  In the present invention, the C1-C4 alkyl group means a linear or branched alkyl group having 1 to 4 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and a 1-methyl group. Examples include an ethyl group, a butyl group, a 1-methylpropyl group, a 2-methylpropyl group, and a 1,1-dimethylethyl group.

  In the present invention, the C2-C4 alkenyl group is a linear or branched chain having 2 to 4 carbon atoms and an unsaturated carbonization having one or more double bonds in the molecule. Means a hydrogen group, for example, vinyl group, 1-propenyl group, 2-propenyl group, 1-methylvinyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group, 2-methyl-2-propenyl group Is mentioned.

  In the present invention, the C1-C4 alkoxy group means a group represented by a linear or branched alkyl-O— having 1 to 4 carbon atoms, such as a methoxy group, an ethoxy group, Examples include propoxy group, 1-methylethoxy group, butoxy group, 1-methylpropoxy group, 2-methylpropoxy group and 1,1-dimethylethoxy group.

  In the present invention, the C1-C3 alkylsulfanyl group means a group represented by alkyl-S- having 1 to 3 carbon atoms, such as a methylsulfanyl group, an ethylsulfanyl group, a propylsulfanyl group, and isopropyl. A sulfanyl group is mentioned.

  In the present invention, “may have one or more halogen atoms” means that when two or more halogen atoms are present, the halogen atoms may be the same or different from each other. Also good. In addition, “one or more” means one or more and the maximum number of atoms or groups to which atoms or groups can be bonded, unless otherwise specified.

Examples of the halogen atom represented by R ¹ , R ^3a , R ^3b , R ^5a and R ^5b include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.

Examples of the C1-C4 alkyl group optionally having one or more halogen atoms represented by R ¹ , R ^3a , R ^3b , R ^5a and R ^5b include a methyl group, a fluoromethyl group, and a difluoromethyl group. Group, trifluoromethyl group, chloromethyl group, dichloromethyl group, trichloromethyl group, ethyl group, pentafluoroethyl group, 2,2,2-trifluoroethyl group, 2,2,2-trichloroethyl group, propyl group 1-methylethyl group, 1-trifluoromethyltetrafluoroethyl group, butyl group, 2-methylpropyl group, 1-methylpropyl group and 1,1-dimethylethyl group.

Examples of the C2-C4 alkenyl group represented by R ¹ which may have one or more halogen atoms include 2-propenyl group, 3-chloro-2-propenyl group, 2-chloro-2-propenyl group. Groups, 3,3-dichloro-2-propenyl group, 2-butenyl group, 3-butenyl group and 2-methyl-2-propenyl group.

Examples of the C1-C4 alkoxy group optionally having one or more halogen atoms represented by R ¹ , R ^5a and R ^5b include a methoxy group, a trifluoromethoxy group, an ethoxy group, 2,2, Examples include 2-trifluoroethoxy group, propoxy group, 1-methylethoxy group, butoxy group, 2-methylpropoxy group, 1-methylpropoxy group, and 1,1-dimethylethoxy group.

Examples of the C1-C3 alkylsulfanyl group represented by R ¹ which may have one or more halogen atoms include a methylsulfanyl group, an ethylsulfanyl group, a propylsulfanyl group, an isopropylsulfanyl group, and trifluoromethylsulfanyl. Group, 2,2,2-trifluoroethylsulfanyl group and pentafluoroethylsulfanyl group.

Examples of R ^2a include 6-fluoro-3-pyridyl group, 6-chloro-3-pyridyl group, 6-bromo-3-pyridyl group, 6-methyl-3-pyridyl group, 3-pyridyl group, 2- A pyridyl group is mentioned.
Examples of R ^2b include a 2-fluoro-5-thiazolyl group, a 2-chloro-5-thiazolyl group, a 2-bromo-5-thiazolyl group, a 2-methyl-5-thiazolyl group, and a 5-thiazolyl group. .
Examples of R ^2c include a 5-pyrimidinyl group.

Examples of R ^4a include a phenyl group, 2-fluorophenyl group, 3-fluorophenyl group, 4-fluorophenyl group, 3-chlorophenyl group, 4-chlorophenyl group, 3-cyanophenyl group, 4-cyanophenyl group, 2,4-dichlorophenyl group, 2,5-difluorophenyl group, 2-fluoro-4-cyanophenyl group, 2-methyl-4-chlorophenyl group, 4-chloro-2-fluorophenyl group, 3- (trifluoromethoxy ) Phenyl group, 4- (trifluoromethyl) phenyl group, 2-chloro-4- (trifluoromethyl) phenyl group, 2-fluoro-4- (trifluoromethyl) phenyl group, 2-fluoro-5- (tri Fluoromethyl) phenyl group, 2-fluoro-5- (trifluoromethoxy) phenyl group, 2-methyl-4- (tri Ruoromechiru) phenyl group.
Examples of R ^4b include 6-fluoro-3-pyridyl group, 6-chloro-3-pyridyl group, 2,6-dichloro-3-pyridyl group, 4,6-dichloro-3-pyridyl group, 6-tridyl group, and the like. A fluoromethyl-3-pyridyl group is mentioned.

As an aspect of this mesoionic compound, the following compound is mentioned, for example.
In the formula (I), n is 1, R ¹ is a fluorine atom, chlorine atom, bromine atom, methyl group, methoxy group, trifluoromethyl group, trifluoromethoxy group or trifluoromethylsulfanyl group, and R ² Wherein 2- is a 5-chloro-5-thiazolyl group or a 5-pyrimidinyl group;
In the formula (I), n is 2, R ¹ is the same as or different from each other, and is a fluorine atom, a chlorine atom, a bromine atom, a methyl group, a methoxy group, a trifluoromethyl group or a trifluoromethoxy group, and R ^A compound wherein ² is a 2-chloro-5-thiazolyl group or a 5-pyrimidinyl group;
In the formula (I), a compound wherein n is 1, R ¹ is a fluorine atom, and R ² is a 2-chloro-5-thiazolyl group or a 5-pyrimidinyl group;
In the formula (I), n is 1, R ¹ is a fluorine atom, chlorine atom, bromine atom, methyl group, methoxy group, trifluoromethyl group, trifluoromethoxy group or trifluoromethylsulfanyl group, and R ² A compound wherein is a 2-chloro-5-thiazolyl group;
In the formula (I), n is 2, R ¹ is the same as or different from each other, and is a fluorine atom, a chlorine atom, a bromine atom, a methyl group, a methoxy group, a trifluoromethyl group or a trifluoromethoxy group, and R ^A compound wherein ² is a 2-chloro-5-thiazolyl group;
In the formula (I), a compound wherein n is 1, R ¹ is a fluorine atom, and R ² is a 2-chloro-5-thiazolyl group;
In the formula (I), n is 1, R ¹ is a 6-chloro-3-pyridyl group, a 2,6-dichloro-3-pyridyl group or a 6-trifluoromethyl-3-pyridyl group, and R ² A compound wherein is a 2-chloro-5-thiazolyl group;
In formula (I), n is 2, R ¹ is the same as or different from each other, fluorine atom, chlorine atom, trifluoromethoxy group, 6-chloro-3-pyridyl group, 2,6-dichloro-3- A compound which is a pyridyl group or a 6-trifluoromethyl-3-pyridyl group and R ² is a 2-chloro-5-thiazolyl group;
In the formula (I), n is 1, and R ¹ is a phenyl group, 2,4-dichlorophenyl group, 2,5-difluorophenyl group, 4-chloro-2-fluorophenyl group, 3- (trifluoromethoxy) Phenyl group, 4- (trifluoromethyl) phenyl group, 2-chloro-4- (trifluoromethyl) phenyl group, 2-fluoro-4- (trifluoromethyl) phenyl group, 2-fluoro-5- (trifluoro) Methyl) phenyl group, 2-fluoro-5- (trifluoromethoxy) phenyl group or 2-methyl-4- (trifluoromethyl) phenyl group, and R ² is a 2-chloro-5-thiazolyl group;
In formula (I), n is 2, R ¹ is the same as or different from each other, fluorine atom, chlorine atom, cyano group, methyl group, methoxy group, trifluoromethyl group, trifluoromethoxy group, phenyl group, 2,4-dichlorophenyl group, 2,5-difluorophenyl group, 4-chloro-2-fluorophenyl group, 3- (trifluoromethoxy) phenyl group, 4- (trifluoromethyl) phenyl group, 2-chloro-4 -(Trifluoromethyl) phenyl group, 2-fluoro-4- (trifluoromethyl) phenyl group, 2-fluoro-5- (trifluoromethyl) phenyl group, 2-fluoro-5- (trifluoromethoxy) phenyl group Or a compound which is a 2-methyl-4- (trifluoromethyl) phenyl group and R ² is a 2-chloro-5-thiazolyl group;

［式中、ｎ及びＲ¹の組合せは、［表１］、［表２］及び［表３］に示されるいずれかの組合せを表す。］ Next, specific examples of the present mesoionic compound used in the present invention are shown.
A compound of formula (Ia);

[Wherein, the combination of n and R ¹ represents any combination shown in [Table 1], [Table 2] and [Table 3]. ]

なお、［表１］、［表２］及び［表３］中のＲ¹における「３−（ＣＨ＝ＣＨ₂）」及び「３−ＯＣＦ₃」等の「３−」との記載は、前記式（Ｉ−ａ）中のベンゼン環上の置換位置が３位であることを表す。

In addition, the description of “3-” such as “3- (CH═CH ₂ )” and “3-OCF ₃ ” in R ¹ in [Table 1], [Table 2] and [Table 3] It represents that the substitution position on the benzene ring in the formula (Ia) is the 3-position.

［式中、ｎ及びＲ¹の組合せは、［表４］に示されるいずれかの組合せを表す。］ A compound of formula (Ib);

[Wherein, the combination of n and R ¹ represents any combination shown in [Table 4]. ]

なお、［表４］中のＲ¹における「３−ＣＦ₃」及び「３−ＯＣＦ₃」等の「３−」との記載は、前記式（Ｉ−ｂ）中のベンゼン環上の置換位置が３位であることを表す。

In Table 4, the description of “3-” such as “3-CF ₃ ” and “3-OCF ₃ ” in R ¹ is the substitution position on the benzene ring in the formula (Ib). Represents the 3rd position.

  In addition to the structure represented by formula (I), the present mesoionic compound also includes ionization embodiments represented by other structural formulas, and any of these embodiments is present alone or in admixture of two or more. However, the present mesoionic compounds include these.

  This mesoionic compound can be produced by the method described in International Publication No. 2011/017342.

Probenazole, thiazinyl, tricyclazole, oryastrobine and pyroxylone used in the present invention are all known compounds, for example, “The Pesticide Manual-15th edition (BCPC); ISBN 978-1-901396-18-8” 927, 1134, 1163, 840, and 999 pages. These compounds can be obtained from commercially available preparations or produced by known methods.
Isotianil used in the present invention is a known compound and can be produced, for example, by the method described in International Publication No. 99/024413.

In the present invention, the mesoionic compound can be used as it is, but usually the mesoionic compound and an inert carrier are mixed, and a surfactant or other formulation adjuvant is added as necessary. , Oils, emulsions, flowables, wettable powders, granular wettable powders, powders, granules and the like.
The content of the present mesoionic compound in the preparation containing the present mesoionic compound is usually 0.01 to 100% by weight, preferably 0.1 to 90% by weight, and more preferably 0.5 to 70% by weight.

The present control composition may be a simple mixture of the present mesoionic compound and the present compound A. Usually, the present mesoionic compound, the present compound A and an inert carrier are mixed, and if necessary, a surfactant or Other formulation adjuvants are added and formulated into oils, emulsions, flowables, wettable powders, granular wettable powders, powders, granules and the like.
The total amount of the present mesoionic compound and the present compound A in the preparation containing the present mesoionic compound and the present compound A is usually 0.1% to 100% by weight, preferably 0.1 to 90% by weight, more preferably 0.5 to 70% by weight.

Examples of the inert carrier used for formulation include a solid carrier and a liquid carrier. Examples of the solid carrier include kaolin clay, attapulgite clay, bentonite, montmorillonite, acid clay, pyrophyllite, talc, diatomite, calcite, and other natural organic substances such as corn cob powder and walnut shell powder, urea. Examples include synthetic organic materials such as calcium carbonate, ammonium sulfate, and the like, fine powders or granular materials made of synthetic inorganic materials such as synthetic silicon hydroxide, and liquid carriers include aromatic carbonization such as xylene, alkylbenzene, and methylnaphthalene. Hydrogens, alcohols such as 2-propanol, ethylene glycol, propylene glycol and ethylene glycol monoethyl ether, ketones such as acetone, cyclohexanone and isophorone, vegetable oils such as soybean oil and cottonseed oil, petroleum aliphatic hydrocarbons and esters Kind Sulfoxide, acetonitrile, and water.
Examples of surfactants include anionic interfaces such as alkyl sulfate esters, alkylaryl sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkylaryl ether phosphate esters, lignin sulfonates, naphthalene sulfonate formaldehyde polycondensates, and the like. Nonionic surfactants such as activators and polyoxyethylene alkyl aryl ethers, polyoxyethylene alkyl polyoxypropylene block copolymers, sorbitan fatty acid esters, and cationic surfactants such as alkyltrimethylammonium salts.
Examples of other adjuvants for preparation include water-soluble polymers such as polyvinyl alcohol and polyvinyl pyrrolidone, gum arabic, alginic acid and salts thereof, polysaccharides such as CMC (carboxymethyl cellulose) and xanthan gum, aluminum magnesium silicate, alumina sol Inorganic substances such as preservatives, coloring agents and stabilizers such as PAP (isopropyl acid phosphate) and BHT (2,6-di-tert-butyl-4-methylphenol).

  The ratio of the content of the present mesoionic compound and the present compound A in the present control composition is not particularly limited, but is usually 10: 1 to 1: 100, preferably 5: 1 to 1:50 by weight.

  The present invention is performed by applying the present mesoionic compound or the present control composition to rice seedlings. Here, the rice seedling place means a place where seedlings are cultivated during the period from seeding of rice to the time of transplanting, and is distinguished from Honda. In such rice seedlings, paddy soil, field soil, mountain soil, and the like, artificial culture soil, artificial molding media, and the like are used.

  In the present invention, other insecticides and fungicides can be used in combination or in combination.

  Examples of planthoppers that can be controlled according to the present invention include yellow planthopper (Nilaparvata lugens), white-spotted planthopper (Sogataella furcifera), and brown planthopper (Laodedelfax straellatus).

  According to the present invention, it is possible to suppress damage caused by planthoppers on rice after transplantation. Examples of the damage caused by such planthoppers include the death of rice and the reduction of the number of rice tillers.

  After applying the present mesoionic compound or the present control composition to a rice nursery, the rice is transplanted. Examples of places where rice is transplanted include flooded soil such as paddy fields and dry rice fields.

  In the present invention, the time for applying the present mesoionic compound or the present control composition is not particularly limited as long as it is a period from the sowing of rice to the time of transplantation, but preferably 5 days before transplantation and 2 days before transplantation.

In the present invention, the application amount of the present mesoionic compound or the present control composition can be changed depending on the type and degree of occurrence of the planthoppers to be controlled, the formulation form, weather conditions, etc., but the amount of the present mesoionic compound or the present mesoion The total amount of the compound and the present compound A is usually 0.01 to 1000 g, preferably 0.1 to 200 g, per 1 m ^{2 of} rice seedlings.

  In the present invention, when the rice seedling is a rice seedling box, the application amount is the amount of the mesoionic compound or the total amount of the mesoionic compound and the compound A as one box (about 60 cm in width, It is usually 0.01 to 35 g, preferably 0.02 to 20 g per length (about 30 cm).

  When the preparation form of the present mesoionic compound or the present control composition used in the present invention is a granule, a powder or the like, it is usually applied as it is without dilution. In the case of emulsions, wettable powders, granular wettable powders, flowable powders and the like, they may be applied as they are, but are usually diluted with water and applied. In this case, the concentration of the present mesoionic compound or the total concentration of the present mesoionic compound and the present compound A is usually 0.00001 to 10% by weight, preferably 0.0001 to 5% by weight.

  In the present invention, rice varieties are not particularly limited. Moreover, the rice to which herbicide tolerance, pest tolerance, or environmental stress tolerance was imparted by genetic recombination techniques or breeding methods by crossing may be used.

  Hereinafter, the present invention will be described in more detail with reference to formulation examples and test examples, but the present invention is not limited to the following examples. In the following examples, parts represent parts by weight unless otherwise specified. In the following examples, the compound specified by the description such as “present mesoionic compound (Compound No. 1)” is the compound specified by the corresponding “Compound No.” described in Table 1 to Table 4. The same.

  First, formulation examples are shown.

Formulation Example 1 (Granule)
4 parts of this mesoionic compound (Compound Nos. 1 to 69), 1 part of synthetic hydrous silicon oxide, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 100 parts of kaolin clay residue are thoroughly ground and mixed, and water is added. After kneading well, granulation is dried to obtain granules.

Formulation Example 2 (Granule)
4 parts of this mesoionic compound (Compound Nos. 1 to 69), 2 parts of isotianil, 1 part of synthetic hydrous silicon oxide, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 100 parts of kaolin clay residue are thoroughly ground and mixed. After adding water and kneading well, granulation is dried to obtain granules.

Formulation Examples 3 to 9 (granule)
Instead of 2 parts of isotianil, the same operation as in Formulation Example 2 is carried out except that each compound and the amount used described in [Table 5] are applied to obtain each granule.

Formulation Example 10 (Granule)
1 part of this mesoionic compound (Compound Nos. 1 to 69), 1 part of synthetic hydrous silicon oxide, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 100 parts of kaolin clay residue are thoroughly ground and mixed, and water is added. After kneading well, granulation is dried to obtain granules.

Formulation Example 11 (Granule)
1 part of this mesoionic compound (Compound Nos. 1 to 69), 2 parts of isotianil, 1 part of synthetic hydrous silicon oxide, 2 parts of calcium lignin sulfonate, 30 parts of bentonite and 100 parts of kaolin clay residue are thoroughly ground and mixed. After adding water and kneading well, granulation is dried to obtain granules.

Formulation Examples 12-18 (granule)
Instead of 2 parts of isotianil, the same operation as in Preparation Example 11 is carried out except that each compound and amount used described in [Table 6] are applied to obtain each granule.

Formulation Example 19 (wettable powder)
Add 10 parts of this mesoionic compound (Compound Nos. 1 to 69) into a mixture of 4 parts of sodium lauryl sulfate, 2 parts of calcium lignin sulfonate, 20 parts of synthetic silicon hydroxide fine powder and the remainder of diatomaceous earth and mix well. To obtain 100 parts of wettable powder.

Formulation Example 20 (wettable powder)
10 parts of this mesoionic compound (Compound Nos. 1 to 69) and 2 parts of isotianil were added to a mixture of 4 parts of sodium lauryl sulfate, 2 parts of calcium lignin sulfonate, 20 parts of synthetic silicon hydroxide fine powder and the remainder of diatomaceous earth, Mix well and obtain 100 parts of wettable powder.

Formulation Examples 21 to 25 (wettable powder)
It replaces with 2 parts of isotianil, and except having applied with each compound and usage-amount of the [Table 7] description, operation similar to the formulation example 20 is performed, and a wettable powder 100 parts is obtained.

Formulation Example 26 (Flowable)
By finely pulverizing 100 parts of a mixture obtained by mixing 5 parts of the present mesoionic compound (Compound Nos. 1 to 69), 30 parts of white carbon containing 50 parts of polyoxyethylene alkyl ether sulfate ammonium salt and the remainder of water by a wet pulverization method, Obtain a flowable agent.
Formulation Example 27 (Flowable)
Finely pulverize 100 parts of a mixture of 5 parts of this mesoionic compound (Compound Nos. 1 to 69), 2 parts of isotianil, 30 parts of white carbon containing 50 parts of polyoxyethylene alkyl ether sulfate ammonium salt and the remainder of the water by wet grinding. By doing so, a flowable agent is obtained.

Formulation Examples 28-32 (Flowable)
Instead of 2 parts of isotianil, the same operation as in Formulation Example 27 was carried out except that each compound and the amount used described in [Table 8] were applied to obtain each flowable agent.

  Next, the effect of the present invention will be shown by test examples.

Test example 1
Acetone containing 5% (w / v) of Sorgen TW-20 (Daiichi Kogyo Seiyaku Co., Ltd.) in a predetermined amount of the present mesoionic compound (Compound No. 6), the present mesoionic compound (Compound No. 7) and isotianil. After dissolving in 0.2 ml (manufactured by Kosei Pharmaceutical Co., Ltd.), it was diluted with water to a predetermined concentration.
The mesoionic compound (compound No. 6) or the mesoionic compound (compound No. 7) in water diluted with an aqueous solution of isothianyl is mixed and tested to give the application rates shown in Table 9 and Table 10. A medical solution was prepared.
Twelve days before transplanting, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 8 days after sowing, plant height 7 cm, 1.3 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
Five days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, variety: Hoshino Yume, 15 days after sowing, plant height 9 cm, 1.8 leaves). 5 ml was applied and placed in a greenhouse (23 ° C.).
Two days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 18 days after sowing, plant height 11 cm, 2.1 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
On the day of transplantation, paper pot planted rice (Oryza sativa, cultivar: Hoshi no Yume, 20 days after sowing, plant height 13 cm, 2.4 leaf stage) 1 strain of stock solution 0.5 ml of the above test solution Applied.
The rice planted with the paper pot to which the test chemical solution was applied was transplanted to the flooded soil in a 1 / 10000a Wagner pot and placed in a greenhouse (23 ° C.). The rice stock was covered with a plastic cup, 10 4th instar larvae and adults of the brown planthopper were released, and the whole rice and the plastic cup were covered with a nylon net. This is called a processing zone.
On the other hand, without applying the test chemical, rice planted in a paper pot (20 days after sowing, plant height 13 cm, 2.4 leaf stage) was transplanted in the same manner as in the treated area, placed in a greenhouse, and the 4th instar larvae and adults of the brown planthopper Was released. This is called an untreated section.
Ten days after release, the number of dead insects and the number of dead stems in rice were observed. From the observation results, the mortality rate was calculated by Formula 1), the corrected mortality rate by Formula 2), and the dead stem rate by Formula 3). The test was repeated twice. The average values are shown in Tables 9 and 10.

  Formula 1); death rate (%) = (number of test insects−number of surviving insects) / number of test insects × 100

  Formula 2); corrected mortality rate (%) = {(treatment area mortality rate−untreated area mortality ratio) / (100−untreated area mortality ratio)} × 100

Formula 3); dead stem rate (%) = number of dead stems / number of test stems × 100

Test example 2
This mesoionic compound (compound No. 6) and orissastrobin are dissolved in 0.2 ml of acetone (manufactured by Wako Pure Chemical Industries, Ltd.) containing 5% (w / v) of Sorgen TW-20 (Daiichi Kogyo Seiyaku), respectively. After that, it was diluted with water to a predetermined concentration.
The mesoionic compound (Compound No. 6) in water and orisatrobin in water were mixed to prepare a test drug solution having the application rates shown in Table 11.
Five days before transplantation, paper pot planted rice with 6 stems (Oryza sativa, variety: Hoshi no Yume, 17 days after sowing, plant height 10 cm, 2-leaf stage) 0.5 ml of the above test chemical solution was added to the stock soil. Applied and placed in greenhouse (23 ° C.).
Two days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 20 days after sowing, plant height 12 cm, 2.3 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
The rice planted with the paper pot to which the test chemical solution was applied was transplanted to the flooded soil in a 1 / 10000a Wagner pot and placed in a greenhouse (23 ° C.). The rice stock was covered with a plastic cup, 10 4th instar larvae and adults of the brown planthopper were released, and the whole rice and the plastic cup were covered with a nylon net. This is called a processing zone.
On the other hand, paperpot planted rice (22 days after sowing, plant height 14 cm, 2.5 leaf stage) without transplanting the test chemical was transplanted in the same manner as in the treated area, placed in the greenhouse, and the 4th instar larvae and adults of the brown planthopper Was released. This is called an untreated section.
Ten days after release, the number of dead insects and the number of dead stems in rice were observed. From the observation results, as in Test 1, the mortality rate was calculated by Formula 1), the corrected mortality rate by Formula 2), and the dead stem rate by Formula 3). The test was repeated twice. The average value is shown in Table 11.

Test example 3
The mesoionic compound (Compound No. 7) and orissastrobin are dissolved in 0.2 ml of acetone (manufactured by Wako Pure Chemical Industries, Ltd.) containing 5% (w / v) of Sorgen TW-20 (Daiichi Kogyo Seiyaku Co., Ltd.) each in a predetermined amount. After that, it was diluted with water to a predetermined concentration.
The mesoionic compound (Compound No. 7) in water and orisatrobin in water were mixed to prepare a test drug solution having the application rates shown in Table 12.
Twelve days before transplanting, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 8 days after sowing, plant height 7 cm, 1.3 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
Five days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, variety: Hoshino Yume, 15 days after sowing, plant height 9 cm, 1.8 leaves). 5 ml was applied and placed in a greenhouse (23 ° C.).
Two days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 18 days after sowing, plant height 11 cm, 2.1 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
On the day of transplantation, paper pot planted rice (Oryza sativa, cultivar: Hoshi no Yume, 20 days after sowing, plant height 13 cm, 2.4 leaf stage) 1 strain of stock solution 0.5 ml of the above test solution Applied.
The rice planted with the paper pot to which the test chemical solution was applied was transplanted to the flooded soil in a 1 / 10000a Wagner pot and placed in a greenhouse (23 ° C.). The rice stock was covered with a plastic cup, 10 4th instar larvae and adults of the brown planthopper were released, and the whole rice and the plastic cup were covered with a nylon net. This is called a processing zone.
On the other hand, without applying the test chemical, rice planted in a paper pot (20 days after sowing, plant height 13 cm, 2.4 leaf stage) was transplanted in the same manner as in the treated area, placed in a greenhouse, and the 4th instar larvae and adults of the brown planthopper Was released. This is called an untreated section.
Ten days after release, the number of dead insects and the number of dead stems in rice were observed. From the observation results, as in Test 1, the mortality rate was calculated by Formula 1), the corrected mortality rate by Formula 2), and the dead stem rate by Formula 3). The test was repeated twice. The average value is shown in Table 12.

Test example 4
This mesoionic compound (Compound No. 6), this mesoionic compound (Compound No. 7) and probenazole, respectively, acetone (Wako Pure), containing 5% (w / v) Sorgen TW-20 (Daiichi Kogyo Seiyaku). Yakuhin Kogyo Co., Ltd.) was dissolved in 0.2 ml and diluted with water to a predetermined concentration.
The mesoionic compound (Compound No. 6) or the aqueous mesoionic compound (Compound No. 7) in water and the aqueous solution of probenazole are mixed, and the test drug solution is prepared so that the application amount shown in Table 13 is obtained. Prepared.
Twelve days before transplanting, paper pot planted rice with 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 8 days after sowing, plant height 8 cm, 1.3 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
Five days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshino Yume, 15 days after sowing, plant height 10 cm, 1.8 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
Two days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, variety: Hoshino Yume, 18 days after sowing, plant height 12 cm, 2.1 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
The rice planted with the paper pot to which the test chemical solution was applied was transplanted to the flooded soil in a 1 / 10000a Wagner pot and placed in a greenhouse (23 ° C.). The rice stock was covered with a plastic cup, 10 4th instar larvae and adults of the brown planthopper were released, and the whole rice and the plastic cup were covered with a nylon net. This is called a processing zone.
On the other hand, without applying the test chemical, rice planted in a paper pot (20 days after sowing, plant height 13 cm, 2.4 leaf stage) was transplanted in the same manner as in the treated area, placed in a greenhouse, and the 4th instar larvae and adults of the brown planthopper Was released. This is called an untreated section.
Ten days after release, the number of dead insects and the number of dead stems in rice were observed. From the observation results, as in Test 1, the mortality rate was calculated by Formula 1), the corrected mortality rate by Formula 2), and the dead stem rate by Formula 3). The test was repeated twice. The average value is shown in Table 13.

Test Example 5
This mesoionic compound (Compound No. 41), this mesoionic compound (Compound No. 55), isothianyl, probenazole, and orissastrobin are each contained in a predetermined amount and 5% (w / v) Sorgen TW-20 (Daiichi Kogyo Seiyaku). After dissolving in 0.2 ml of acetone (manufactured by Wako Pure Chemical Industries), it was diluted with water to a predetermined concentration.
The mesoionic compound (compound No. 41) or the mesoionic compound (compound No. 55) in water diluted with an aqueous solution of isothianyl, probenazole, or orysastrobin so as to give the application rate shown in Table 14. A test chemical solution was prepared.
Two days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 20 days after sowing, plant height 12 cm, 2.3 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
The rice planted with the paper pot to which the test chemical solution was applied was transplanted to the flooded soil in a 1 / 10000a Wagner pot and placed in a greenhouse (23 ° C.). The rice stock was covered with a plastic cup, 10 4th instar larvae and adults of the brown planthopper were released, and the whole rice and the plastic cup were covered with a nylon net. This is called a processing zone.
On the other hand, paperpot planted rice (22 days after sowing, plant height 14 cm, 2.5 leaf stage) without transplanting the test chemical was transplanted in the same manner as in the treated area, placed in the greenhouse, and the 4th instar larvae and adults of the brown planthopper Was released. This is called an untreated section.
Ten days after release, the number of dead insects and the number of dead stems in rice were observed. From the observation results, as in Test 1, the mortality rate was calculated by Formula 1), the corrected mortality rate by Formula 2), and the dead stem rate by Formula 3). The test was repeated twice. The average value is shown in Table 14.

Test Example 6
The present mesoionic compound (Compound No. 10), the present mesoionic compound (Compound No. 16), the present mesoionic compound (Compound No. 21), isothianyl, probenazole, and orisatrobin are each given in a predetermined amount, Sorgen TW-20 (Daiichi Kogyo Seiyaku Co., Ltd.). ) Was dissolved in 0.2 ml of acetone (manufactured by Wako Pure Chemical Industries) containing 5% (w / v), and then diluted with water to a predetermined concentration.
The present mesoionic compound (Compound No. 10), the present mesoionic compound (Compound No. 16) or the present mesoionic compound (Compound No. 21) in water diluted with an aqueous solution of isothianyl, probenazole or orisatrobin, The test chemical solution was prepared so that it might become the application rate of 15-Table 17.
Five days before transplantation, paper pot planted rice with 6 stems (Oryza sativa, variety: Hoshi no Yume, 17 days after sowing, plant height 10 cm, 2-leaf stage) 0.5 ml of the above test chemical solution was added to the stock soil. Applied and placed in greenhouse (23 ° C.).
Two days before transplantation, a paper pot planted rice having 6 stems (Oryza sativa, cultivar: Hoshi no Yume, 20 days after sowing, plant height 12 cm, 2.3 leaf stage) 1 strain of the above medicinal solution 0. 5 ml was applied and placed in a greenhouse (23 ° C.).
The rice planted with the paper pot to which the test chemical solution was applied was transplanted to the flooded soil in a 1 / 10000a Wagner pot and placed in a greenhouse (23 ° C.). The rice stock was covered with a plastic cup, 10 4th instar larvae and adults of the brown planthopper were released, and the whole rice and the plastic cup were covered with a nylon net. This is called a processing zone.
On the other hand, paperpot planted rice (22 days after sowing, plant height 14 cm, 2.5 leaf stage) without transplanting the test chemical was transplanted in the same manner as in the treated area, placed in the greenhouse, and the 4th instar larvae and adults of the brown planthopper Was released. This is called an untreated section.
Ten days after release, the number of dead insects and the number of dead stems in rice were observed. From the observation results, as in Test 1, the mortality rate was calculated by Formula 1), the corrected mortality rate by Formula 2), and the dead stem rate by Formula 3). The test was repeated twice. The average values are shown in Table 15 to Table 17.

Claims (8)

In transplantation cultivation of rice, the formula (I)

[Where:
R ¹ has a C1-C4 alkyl group which may have one or more halogen atoms, a C2-C4 alkenyl group which may have one or more halogen atoms, and one or more halogen atoms. An optionally substituted C1-C4 alkoxy group, an optionally substituted C1-C3 alkylsulfanyl group, a cyano group, a halogen atom or R ⁴ ;
n represents any integer of 0 to 3,
R ⁴ represents any group of R ^4a and R ^4b represented by the following formula:

{Where,
R ^5a and R ^5b are the same or different and are each a C1-C4 alkyl group optionally having one or more halogen atoms, a C1-C4 alkoxy group optionally having one or more halogen atoms, cyano Represents a group or a halogen atom,
Z ^a and Z ^b are the same or different and represent 0, 1 or 2,
When there are two R ^5a and R ^5b , each R ^5a and R ^5b may be the same or different. },
R ² represents any group of R ^2a , R ^2b and R ^2c represented by the following formula:

{Where,
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. }.
Incidentally, when n is 2 or 3, a plurality of R ¹ may be different from each other. ] The control method of the planthopper which has the process of applying the effective amount of the compound shown by this to the rice seedling nursery. In the formula (I), the compound represented by the formula (I) is
R ² is any group of R ^2a and R ^{2b represented} by the following formula:

[Where:
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. The method for controlling planthoppers according to claim 1, wherein   The method for controlling planthoppers according to claim 1 or 2, wherein an effective amount of the compound represented by the formula (I) is applied 5 to 2 days before the transplantation of rice. In transplantation cultivation of rice, the formula (I)

[Where:
R ¹ has a C1-C4 alkyl group which may have one or more halogen atoms, a C2-C4 alkenyl group which may have one or more halogen atoms, and one or more halogen atoms. An optionally substituted C1-C4 alkoxy group, an optionally substituted C1-C3 alkylsulfanyl group, a cyano group, a halogen atom or R ⁴ ;
n represents any integer of 0 to 3,
R ⁴ represents any group of R ^4a and R ^4b represented by the following formula:

{Where,
R ^5a and R ^5b are the same or different and are each a C1-C4 alkyl group optionally having one or more halogen atoms, a C1-C4 alkoxy group optionally having one or more halogen atoms, cyano Represents a group or a halogen atom,
Z ^a and Z ^b are the same or different and represent 0, 1 or 2,
When there are two R ^5a and R ^5b , each R ^5a and R ^5b may be the same or different from each other. },
R ² represents any group of R ^2a , R ^2b and R ^2c represented by the following formula:

{Where,
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. }.
Incidentally, when n is 2 or 3, a plurality of R ¹ may be different from each other. ] The control method of the planthopper which has the process of applying the effective amount of the planthopper control composition containing the compound shown by 1 and 1 or more types of compounds chosen from a group (A) to a rice seedling raising place.
Group (A): A group consisting of isothianyl, probenazole, thiazinyl, tricyclazole, orisatrobin and pyroxylone. In the formula (I), the compound represented by the formula (I) is
R ² is any group of R ^2a and R ^{2b represented} by the following formula:

[Where:
R ^3a and R ^3b are the same or different and represent a C1-C4 alkyl group or a halogen atom which may have one or more halogen atoms,
X ^a and X ^b are the same or different and represent 0 or 1. The method for controlling planthoppers according to claim 4, wherein   Claims using a planthopper control composition in which the ratio of the content of the compound represented by the formula (I) and one or more compounds selected from the group (A) is 10: 1 to 1: 100 by weight. Item 6. A method for controlling planthoppers according to Item 4 or 5.   The method for controlling planthoppers according to any one of claims 4 to 6, wherein an effective amount of the planthopper control composition is applied 5 to 2 days before transplanting rice.   The planthopper is a brown planthopper, a white-spotted planthopper, or a common planter. The method for controlling planthoppers according to any one of claims 1 to 7.