JPH111408A - Agricultural and horticultural fungicide composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition which has no limitation for us in terms of timing crops and kinds of diseases in or has extremely limited limitation by formulating a plant-based oil with 8-oxyquinoline copper. SOLUTION: The composition is obtained by mixing 50-85 pts.wt. of a plant- based oil [an oil (rape oil, sesame oil, palm oil, cottonseed oil, etc.), extracted form various plant bodies and a middle chain fatty acid(caproic aicd, caprylic acid, etc.), mono-, di- or tri-glyceride synthesized from a fatty acid arising from plant oils] with 1-40 pts.wt. of 8-oxyquinoline copper in dosage forms of emulsion, oil and hydration agent or using in a dosage form of a dispersing resolvent of 8-oxyquinoline copper in the preparation. Since the composition is diluted with water to use when being sprayed, it is desirable that various surfactants are added to use as hydration agent, emulsion, oil-based flowable agent and suspoemulsion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fungicide composition for agricultural and horticultural use, which comprises a vegetable oil and copper 8-oxyquinoline.

[0002]

2. Description of the Related Art At present, fungicides used in the field of fruit trees and vegetables have been remarkably advanced, and a large number of organic compounds having a low dose and a broad spectrum of fungicides have been developed. However, at present, a decrease in efficacy due to the expression of resistant bacteria due to excessive continuous use of the agent has been a problem in recent years.

[0003] Sulfur and copper compounds are compounds that have been stably exerting their effects for many years, despite the fact that the efficacy of fungicides is reduced due to the development of resistant bacteria and the like. However, these have limitations in use, such as the occurrence of chemical damage and poor rain resistance.
There are various problems such as inferiority to the recently developed organic compounds in terms of efficacy.

A copper compound, 8-oxyquinoline copper,
Conventionally, it has been used as a protective fungicide for diseases such as fruit trees and vegetables. However, because of its poor penetration into plants and poor rain resistance, to fully utilize the original 8-hydroxyquinoline copper effect, add an auxiliary agent such as a spreading agent to stabilize the effect. That is the current situation.

[0005] As a well-known technique, there is a formulation which is improved in permeability and rain resistance by blending with machine oil. However, machine oil has a drawback that the use time, applied diseases, and crops are limited due to chemical damage to the plant.

[0006]

As a method for stabilizing the efficacy of 8-oxyquinoline copper, a suspension formulation for making 8-oxyquinoline copper particles fine is effective. However, although this method has some improvement in efficacy, it is still insufficient. The addition of machine oil can improve the effect and increase the rain resistance, but causes chemical damage and limits its use. Therefore, as a result of intensive studies to solve such problems, the use of 8-oxyquinoline copper in a plant-based oil, which causes less phytotoxicity, is limited by using conventional 8-oxyquinoline copper. The present invention was completed by finding a method for solving the problems described above, exerting the effect sufficiently, and eliminating the physicochemical defects. As is clear from the above description,
An object of the present invention is to provide a fungicidal composition for agricultural and horticultural use which has no or very few timely, crop and pathological restrictions on use.

[0007]

The present invention provides the following (1) to
It has the configuration of (3).

(1) A fungicide composition for agricultural and horticultural use comprising a vegetable oil and copper 8-oxyquinoline as active ingredients.

(2) As the vegetable oil, (1) characterized in that oil extracted from a plant and medium-chain fatty acid glyceride synthesized from fatty acids from the plant are used.
The fungicidal composition for agricultural and horticultural use according to the above.

(3) The fungicide composition for agricultural and horticultural use according to the above (1), wherein 1 to 40 parts of copper 8-oxyquinoline is dispersed in 50 to 85 parts of a vegetable oil to form a suspension.

The agricultural and horticultural fungicides described in the above (1), (2) and (3) are used by diluting them with water at the time of spraying. It is desirable to use an oil-based flowable, suspoemulsion.

The vegetable oils used in the present invention are mono-, di- and triglycerides of medium-chain fatty acids synthesized from oils extracted from various plants and fatty acids derived from vegetable oils.
It is desirable to mix with 8-hydroxyquinoline copper in the form of oils and wettable powders or to use it as a dispersion solvent for 8-oxyquinoline copper in the formulation. Specific examples of oils extracted from plants include rapeseed seeds, sesame oil, coconut oil, cottonseed oil, and the like.As medium-chain aliphatic acids for medium-chain aliphatic glycerides synthesized from aliphatics from plants, Caproic acid or caprylic acid or mixtures thereof can be mentioned.

The type of surfactant used in the present invention is not limited. That is, any of anionic, cationic, nonionic and amphoteric surfactants can be used, and they can be used alone or in combination of two or more. The method of mixing with 8-oxyquinoline copper and vegetable oil and the mixing order are not limited, but the amount of surfactant used is usually relatively small compared to the former two, and the presence of surfactant Facilitates the mixing of the former,
It is desirable that the three be charged into the mixer at about the same time and be mechanically mixed.

The method for producing the composition of the present invention is not limited. The composition of the present invention, in the narrowest sense, comprises 10 to 90 parts by weight of a required ratio of vegetable oil and 90 to 10 parts by weight of a required ratio of 8-oxyquinoline copper. When the important ratio of vegetable oil and copper 8-oxyquinoline is outside the above range,
In particular, when no surfactant is blended, uniform mechanical mixing of both components tends to be difficult.

[0015]

Next, the present invention will be described with reference to examples, comparative examples and test examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof.

Example-1 32 parts of 8-hydroxyquinoline copper, triglyceride caprylate [trade name: Coconard RK, manufactured by Kao Corporation] 5
7 parts, surfactant [trade name: Exel 300 Kao Corporation]
1 part, surfactant [trade name: Emulgen 905]
9 parts of Kao Co., Ltd.] and 1 part of a surfactant [trade name: Floren G-700, manufactured by Kyoeisha Chemical Co., Ltd.] are mixed, glass beads (1 mm in diameter) are added in an amount equal to the amount of the preparation, and the mixture is sand-ground. Crushed for 1 hour to obtain 100 parts of oil-based flowable.

Example-2 32 parts of 8-oxyquinoline copper, 57 parts of rapeseed oil (manufactured by Nisshin Oil Co., Ltd.), surfactant [trade name: Exel 3
00 Kao Corporation] 1 part, surfactant [brand name: Emulgen 905 Kao Corporation] 9 parts, surfactant [brand name: Floren G-700, manufactured by Kyoeisha Chemical Co., Ltd.]
One part was mixed, glass beads (diameter 1 mm) were added in an amount equal to the amount of the preparation, and crushed for 1 hour with a sand grinder.
Some oil-based flowables were obtained.

Example-3 A mixture of 32 parts of 8-hydroxyquinoline copper, 75% caprylic triglyceride + 25% capric triglyceride [trade name: O.K. D. O Nisshin Oil Co., Ltd.] 57 parts,
Surfactant [trade name: EXCEL 300 manufactured by Kao Corporation]
9 parts of a surfactant [trade name: Emulgen 905, manufactured by Kao Corporation] and 1 part of a surfactant [trade name: Floren G-700, manufactured by Kyoeisha Chemical Co., Ltd.] were mixed with glass beads (diameter 1 mm). ) Was added in an amount equal to the amount of the preparation, and pulverized for 1 hour with a sand grinder to obtain 100 parts of an oil-based flowable.

Comparative Example 1 Quinolide-Water [40% copper 8-oxyquinoline manufactured by Agrokanesha Co., Ltd.] Comparative Example 2 35% Quinolide-flowable [copper 8-oxyquinoline]
Agrokanesha Co., Ltd.] Comparative Example-3 Altaver Flowable [8-Oxyquinoline Copper 12
% Machine oil 70% manufactured by Tomono Agrica Co., Ltd.]

The effects of the present invention will be described with reference to test examples. However, the preparations used in the test examples were prepared according to Examples 1 to 3.

Test Example 1 Example-3 and Comparative Examples 1-1 and -2 were diluted to a predetermined concentration and sprayed twice at intervals of 20 days on grapes (variety: Red Izu), and blackpox disease 10 days after the last spraying The effect on was investigated.
The results are shown in Table 1. The test was performed without repetition.

[0022]

[Table 1]

Criteria for Investigation of Effects on Blackpox Disease 0: No disease occurred 1: Lesion area 12.5% or less 2: Lesion area 12.5% to 25.0% 3: Lesion area 25.0% to 50 0.0% 4: As a result of examining the effects on grape blackpox disease with a lesion area of 50.0% or more, the wettable powder form of Comparative Example-1 and the Comparative Example-
When the flowable formulation of Example 2 was compared, the efficacy of Comparative Example-2, in which fine particles of 8-oxyquinoline copper were fine, was not recognized, but the example of the suspension formulation in which vegetable oil and 8-oxyquinoline copper were blended was used. As for -3, a high control rate was recognized at a concentration of about 1/2 to 1/3 of the 8-oxyquinoline copper concentration of the existing drug (Comparative Examples-1 and -2), and a drastic increase in efficacy was recognized. Was.

Examples 1-3 and Comparative Examples 1-3 were diluted to predetermined concentrations and sprayed four times at 10-day intervals on grape (variety Muscat), and the effect on blackpox disease 14 days after the last spraying was investigated. In addition, investigations were made on the phytotoxicity of leaves and fruits, and the results are shown in Table 2. The test was performed in duplicate.

[0025]

[Table 2]

Criteria for Investigation of Effect on Black Spot Disease 0: No disease occurred 1: Lesion area 12.5% or more 2: Lesion area 12.5% to 25.0% 3: Lesion area 25.0% to 50 0.0% 4: Lesion area 50.0% or more As a result of examining the effect on grape blackpox disease, the plant system to be mixed with 8-oxyquinoline copper was found to be more effective than the control rates of Examples 1-1 to -3. There was no effect of the type of oil on potency. Comparative examples -1 and -2 of existing drugs
Needless to say, the difference in efficacy from Comparative Example-3, which is a similar preparation containing machine oil, is particularly obvious.
A high control rate was observed at a concentration of 1/8 of the 8-oxyquinoline copper concentration, and among various oils, the enhancement of the efficacy of the vegetable oil was remarkable. In Comparative Example-3, which is a similar formulation containing machine oil, phytotoxicity of growth inhibition was observed, but in Examples-1 to -3, no phytotoxicity was observed and the safety to plants was high. Admitted.

Test Example-3 Example-3 and Comparative Examples 1-2 were diluted to a predetermined concentration and sprayed on lemon six times at 10-day intervals, and the effect on black spot disease 20 days after the final spraying was examined. Table 3 shows the results. The test was performed without repetition.

[0028]

[Table 3]

Criteria for Investigation of Effect on Black Spot Disease 0: No disease occurrence 1: Lesion area 12.5% or less 2: Lesion area 12.5% to 25.0% 3: Lesion area 25.0% to 50. 0% 4: Lesion area 50.0% or more As a result of examining the effect on citrus black spot or more, the wettable powder type of Comparative Example-1 and Comparative Example-2 by a known technique
When the flowable dosage forms of Comparative Examples 1 and 2 were compared, the remarkable enhancement of the efficacy of Comparative Example-2, in which the particles of 8-oxyquinoline copper were fine, was observed. However, a suspension formulation containing a vegetable oil and 8-oxyquinoline copper was carried out. In Example-3, a dramatic increase in efficacy over Comparative Example-2 was observed.

Test Example-4 Example-3 and Comparative Examples-1, -2, and -3 were diluted to a predetermined concentration and sprayed four times at intervals of 14 days from the dormancy period to the growth period of pear (cultivar Shinsui). The effect on scab 60 days after the last application was investigated. The results are shown in Table 4. The test was performed without repetition.

[0031]

[Table 4]

Criteria for Investigation of Effect on Scab 0: No onset 1: 1-2 lesions 3: 3-4 lesions or 1 equivalent lesion 5: 5 lesions or more As a result of examining the effect on pear scab of two or more large lesions or equivalent, Comparative Examples -1 to -3 of the existing drugs have a low control effect,
This may be due to insufficient penetration of 8-oxyquinoline copper into the pear epidermis during the dormant period control. However, in Example-3, 8-oxyquinoline copper was effectively penetrated into pear epidermis because a high control rate was observed when the concentration of 8-oxyquinoline copper was about the same amount to 1/4 that of the comparative example. It was recognized that. Comparative example, which is a similar formulation containing machine oil which was considered to have relatively high penetrating power-
In comparison with the control rate of Example 3, Example containing a vegetable-based oil-
No. 3 has a high osmotic power, and it has been proved that the effect is not influenced by the control time (plant form).

Claims (3)

[Claims] An agricultural and horticultural fungicide composition comprising a vegetable oil and copper 8-oxyquinoline as active ingredients. 2. As a vegetable oil, an oil extracted from a plant,
The fungicide composition for agricultural and horticultural use according to claim 1, wherein a medium-chain fatty acid glyceride synthesized from a fatty acid from a plant and a plant is used. 3. 1 to 40 parts of 8-hydroxyquinoline copper is added to 50 parts.
The fungicidal composition for agricultural and horticultural use according to claim 1, wherein the composition is dispersed in up to 85 parts of a vegetable oil to form a suspension.