JPH08245311A - Composition for agricultural and horticultural pest control - Google Patents

Abstract

PURPOSE: To obtain an agricultural and horticultural pest control composition expressing a synergistic effect for an antibacterial effect and a pesticidal and acaricidal effect by allowing to contain methylmethoxyiminotolyloxytolyl acetate, etc., and fenpyrade, etc., as effective ingredients. CONSTITUTION: This agricultural and horticultural pest control composition contains (A) one or more compounds selected from the group consisting of N-methyl-(E)-methoxyimino[α-(O-tolyloxy-O-tolyl] acetate, methyl-(E)-2- 2-[6-(2- cyanophenoxy)pyrimidine-4-yloxyl]phenyl-3-methoxy acrylate and (E)-2- methoxyimino-N-methyl-2-(2-phenoxyphenyl) acetamide (B) one or more compounds selected from the group consisting of fenpyrade, fenpyroximate and pyridaben. The mixing ratio of the ingredient A/ingredient B is preferably 4/1-1/4 in weight ratio.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pest control agent for agricultural and horticultural use which exhibits excellent synergistic or synergistic bactericidal and insecticidal acaricidal action against pests.

[0002]

2. Description of the Related Art Conventionally, many agricultural and horticultural control agents have been used for controlling pests that harm crops, but improvements are still desired in various aspects. For example, methoxyacrylate-related fungicides are known to show growth inhibition against pathogenic bacteria such as powdery mildew, scab, and rust, which are harmful to agriculture and horticulture, but such as gray mold and sclerotia. Its effect is not sufficient for certain diseases. In addition, the miticides fenpyrad, fenpyroximate, pyridaben, etc. are losing their usefulness due to the recent occurrence of mites resistant to these drugs.

[0003]

SUMMARY OF THE INVENTION The present invention compensates for the drawbacks of the above-mentioned drugs by mixing a plurality of drugs.
It is an object of the present invention to provide a pest control composition for agricultural and horticultural use, which shows high effects on bactericidal, insecticidal and acaricidal activities which are insufficient with each agent alone.

[0004]

The present invention is directed to at least one fungicide related to methoxyacrylate and fempirad,
A pest control composition for agricultural and horticultural use, which comprises, as an active ingredient, at least one of fenpyroximate and pyridaben.

The methoxyacrylate-related bactericide which is one of the active ingredients of the bactericidal composition of the present invention is, for example, JP-A-2-264765, JP-A-3-246268, JP-A-3-284659 or JP-A-4. -89464, JP-A-4-182461, JP-A-5-43333, JP-A-5-78301, and JP-A-5-163249. It is characterized by having a partial structure in the molecule. All of these compounds having a common action are included in the methoxyacrylate-related fungicides referred to in the present invention.

As a fungicide related to methoxy acrylate,
Specifically, methyl- (E) -methoxyimino [α-
(O-triloxy-O-tolyl] acetate (hereinafter referred to as “compound (A)”), methyl- (E) -2- {2- [6
-(2-Cyanophenoxy) pyrimidin-4-yloxy] phenyl} -3-methoxyacrylate (hereinafter referred to as "compound (B)"), and (E) -2-methoxyimino-N-methyl-2- (2-phenoxyphenyl) ) Acetamide (hereinafter referred to as “compound (C)”) and the like.

The compounds (A), (B), and (C) of the methoxyacrylate-related fungicides of the present invention alone do not show a sufficient effect against Botrytis cinerea. Also, these compounds have no acaricidal or insecticidal effect.

The other active ingredient of the present invention is fenpyrad (hereinafter referred to as "compound (D), fenpyroximate (hereinafter referred to as" compound (E) ") and pyridaben (hereinafter referred to as" compound (F) "). The compounds (D), (E) and (F), which are acaricides, are losing their usefulness due to the recent occurrence of spider mites that have become resistant to these agents, and warn future control. (The 54th Annual Conference of the Japanese Society of Entomology, 1994, 38th
248th Annual Meeting of Japan Society for Applied Animal Entomology
page). It also has an insecticidal effect on aphids,
Since the effect is not sufficient, even higher efficacy is desired. Further, these are compounds having little bactericidal activity against Botrytis cinerea.

The inventors of the present invention have found that a composition comprising the above-mentioned methoxyacrylate-related fungicide compound and the above-mentioned acaricide has a synergistic effect which is not observed by itself and has an excellent bactericidal, insecticidal and acaricidal activity. The present invention has been completed by discovering that it can be demonstrated.

In the present invention, when the above-mentioned active ingredient is used as a carrier, a mixture of any one of the compounds (A), (B) or (C) and any one of the compounds (D) (E) or (F). The ratio is arbitrary, but is generally 1: 100 to 100: 1, more preferably 4: 1 to 1: 4 so as to bring about the synergistic effect. The synergistic effect of the mixture is indicated by the fact that the fungicidal and acaricidal effect of the composition is greater than the fungicidal and acaricidal effect of each active compound.

Practically, pure compounds (A) and (B)
Or any one of (C) and any one of the compounds (D), (E) or (F) are used, and for example, other fungicides, acaricides, nematicides, herbicides, It is also possible to add a plant growth regulator and an auxiliary agent such as a sticking agent and a spreading agent.

In order to carry out the present invention, any one of the compounds (A), (B) or (C) and any one of the compounds (D), (E) or (F) as shown in the examples below. A conventional pesticide form containing one, i.e., a wettable powder, an emulsion, a dry flowable, a flowable, is prepared, or those prepared separately are further mixed.

[0013]

EXAMPLES Next, the present invention will be specifically described with reference to examples. (Example 1) Flowable compound 20.8 parts Compound (A) 5 parts Compound (D) 5 parts Propylene glycol 8 parts Sodium polycarboxylic acid 7 parts EO-added tristyrylphenyl ether 4 parts Silicone antifoam 0.5 parts Xanthane gum 0 2 parts Water 54.5 parts The above was finely pulverized by a wet method to obtain a flowable product containing 21.3% of the active ingredient.

(Example 2) Wettable powder Compound (A) 23.5 parts Compound (D) 5 parts Clay 53.5 parts Sodium alginate benzene sulfonate 3 parts Naphthalene sulfonic acid formaldehyde condensate 5 parts Sodium lignin sulfonate 10 28.5% of active ingredient
A wettable powder of

[0015]

【The invention's effect】

(Test example 1) Green mold of green beans (field test) Test place: Nippon Soda Co., Ltd., Harabara Agricultural Research Institute Crop: kidney beans (variety: Satsuki Midori No. 2) Chemical treatment: at the beginning of flowering A drug solution prepared by diluting the prepared preparation into a predetermined amount was sprayed with a shoulder sprayer in three times. Disease occurrence survey: The disease severity of 10 strains per ward was investigated according to the following disease criteria, and the disease severity and control value were calculated.

Crisis standard and standard value: Crisis standard Criterion value No sickness ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 0 0 1 to 2 spots ・ ・ 1 1 3 to 4 spots ・ 2 2 5 to 9 spots・ ・ 3 10 to 20 diseased spots ・ ・ 4 4 diseased spots 20 or more ・ ・ ・ 5

[0017]

[Equation 1] v: Disease-causing reference value n: Number of strains for each disease-causing criterion (reference value) N: Number of surveyed strains

[0018]

[Equation 2] C: severity of untreated plot T: severity of test plot

The test results are shown in Table 1.

[0020]

[Table 1]

[0021] (Test Example 2) to produce the added potato dextrose agar plates such petri dish antibacterial test diameter 9cm the test drug at a predetermined concentration, Botrytis cinerea (Botrytis cinerea), Sclerotinia sclerotiorum ( Scl
erotinia sclerotiorum) , cucumber scab (Cladospor)
ium cucumerinum) was cultured, and after 3 to 7 days, the diameter of viable mycelium was measured and the growth inhibition rate was calculated.

[0022]

(Equation 3) C: Mycelial growth diameter of untreated section T: Mycelial growth diameter of test section

The test results are shown in Tables 2-6.

[0024]

[Table 2]

[0025]

[Table 3]

[0026]

[Table 4]

[0027]

[Table 5]

[0028]

[Table 6]

(Test Example 3) Aphid insecticidal test For a chromatograph, a drug solution prepared by diluting a preparation prepared according to Examples 1 and 2 to a predetermined amount on a 1.3 leaf stage cucumber leaf previously inoculated with cotton aphid was used for chromatography. It was sprayed with a glass nozzle. Three days after the treatment, the number of adult larvae was investigated and the insecticidal rate was calculated. The test results are shown in Table 7.

[0030]

[Table 7]

Test Example 4 Acaricidal Mite Acaricidal Test Twenty female adults of Fenpyrad-resistant citrus red mite were inoculated into cut citrus leaves placed in a 9 cm petri dish. Then, in Example 2. The drug solution prepared by diluting the preparation prepared in accordance with 1) to a predetermined dose was sprayed with a micro sprayer. After 3 days from the treatment, the number of adults of the spider mite was examined and the insecticidal rate was calculated.

[0032]

[Table 8]

In this test, the synergistic effect between the active compounds used was that of Corby, We.
eds. , 15 , 20 to 22 (1967).

[0034]

(Equation 5) Here, X = control value by compound 1 in the case of active ingredient concentration p Y = control value by compound 2 in the case of active ingredient concentration q E = predicted control value (theoretical value) by compound 1 + 2 in the case of p + q. If the observed value is higher than the theoretical value (E), this combination mixture has a synergistic effect.

The above observed values showed a control value higher than the theoretical amount by Corby's theoretical value (E), indicating that the pest control composition of the present invention has an excellent synergistic action.

Claims (1)

[Claims] 1. N-methyl- (E) -methoxyimino [α
-(O-triloxy-O-tolyl] acetate, methyl- (E) -2- {2- [6- (2-cyanophenoxy) pyrimidin-4-yloxy] phenyl} -3-methoxyacrylate, and (E)-. 2-methoxyimino-
It is characterized by containing at least one selected from the group consisting of N-methyl-2- (2-phenoxyphenyl) acetamide and at least one selected from the group consisting of fenpyrad, fenpyroximate and pyridaben, as active ingredients. Agricultural and horticultural pest control composition.