JP2008290993A - Agricultural / horticultural fungicide composition and method of use thereof - Google Patents

Abstract

【Task】
In general, copper agents cause phytotoxicity when they are absorbed into plants by other components, and when mixed, they may affect the stability of other active ingredients and the physicochemical properties of pharmaceuticals. However, it is difficult to develop a mixed preparation with other active ingredients and establish a method for using them, but by combining copper with other active ingredients, the occurrence of chemical damage and the stability of the other active ingredients are impaired. An agricultural and horticultural fungicide composition and an agricultural and horticultural disease control method that exhibit an excellent disease control effect without causing the above problem.
An agricultural and horticultural fungicide composition containing copper agent and trifolin as active ingredients has an excellent effect that cannot be expected from the effect of each fungicide alone against various diseases including drug-resistant bacteria. In addition, there is little phytotoxicity to various plants, and the stability of the active ingredient is also excellent.
[Selection figure] None

Description

  TECHNICAL FIELD The present invention relates to an agricultural and horticultural fungicide composition containing a copper agent and trifolin as active ingredients, a method for using the same, and the like.

In the field of agricultural and horticultural fungicides, various compounds are used as active ingredients of agricultural and horticultural fungicides, and many compounds are used for the purpose of complementing the sterilization spectrum of individual compounds and obtaining synergistic effects on specific diseases. Has been developed. Copper agent is an agricultural and horticultural fungicide that has been known for a long time, but it is difficult to develop drug resistance, it is relatively inexpensive and has a controlling effect against a wide range of plant diseases, so it is still widely used today. Many admixtures are known (see, for example, Patent Documents 1 to 3). On the other hand, triforine is a known fungicide having a piperazine structure, and is a compound known as an ergosterol biosynthesis inhibitor (see, for example, Non-Patent Document 1 or 2). However, a mixture containing copper and triphorin as active ingredients has not been known so far, and further, it has not been known that a special synergistic effect as an agricultural and horticultural fungicide is obtained by mixing them.
JP-A-5-320006 JP 2001-206806 A JP 2006-282553 A The Pesticide Side Manual (The Pesticide Manual titration Edition 2003) Shibuya Narumi and 3 others, “SHIBUYA INDEX-2005-10th Edition”, SHIBUYA INDEX Study Group

  As described above, copper agents have been widely used as agricultural and horticultural fungicides, but the effects of copper agents alone are not always sufficient. Therefore, if the effect can be enhanced by combination with other components, it will lead to stabilization of crop production and reduction of the amount of chemicals used, and will contribute to the reduction of the load on the overall natural environment. However, in general, copper agents cause phytotoxicity when absorbed into plants by other components, etc., and when mixed, they affect the stability of other active ingredients and pharmaceutical physicochemical properties Therefore, it is considered difficult to establish a mixture with other active ingredients and a method for mixing them. In view of this situation, an agricultural and horticultural fungicide that exhibits an excellent disease control effect without causing problems such as the occurrence of phytotoxicity and the stability of other active ingredients by combining a copper preparation with other active ingredients A composition was sought.

  The inventors of the present invention have continually studied the development of drugs and treatment methods that exhibit sufficient effects on plant diseases. As a result, the agricultural and horticultural fungicide composition containing copper and triphorin as active ingredients is a drug. It has been found that various effects including resistant bacteria show excellent effects that cannot be expected from each effect, and it has been found that phytotoxicity against various plants is suppressed. The present invention was completed by finding that it is excellent in stability.

That is, the present invention
(1) An agricultural and horticultural fungicide composition containing copper and triphorin as active ingredients,
(2) The agricultural and horticultural fungicide composition according to (1), wherein the copper agent is one or two compounds selected from the group consisting of basic copper chloride, basic copper sulfate and organic copper,
(3) The agricultural and horticultural fungicide composition according to (1), wherein the copper agent is basic copper sulfate,
(4) A method for using an agricultural and horticultural fungicide composition comprising treating an effective amount of the agricultural or horticultural fungicide composition according to any one of (1) to (3) with a plant or a cultivation carrier And (5) A method for using a fungicide composition for agricultural and horticultural use, characterized in that an effective amount of a copper agent and trifolin is individually treated simultaneously with a plant or a cultivation carrier.

  The agricultural and horticultural fungicide composition of the present invention is superior in that it has a synergistic control effect on various plant diseases including drug-resistant bacteria and suppresses phytotoxicity on various plants. Can be used as an agricultural and horticultural fungicide. Moreover, since a much higher effect is recognized than each active ingredient alone, high safety and economy are provided by reducing the amount of drug dropped into the environment and the number of spraying. Furthermore, it is expected to prevent the development of drug resistance in phytopathogenic fungi by combining drugs with different activities.

  The copper agent that is one of the active ingredients used in the agricultural and horticultural fungicide composition of the present invention is an inorganic copper agent or an organic copper agent, and the inorganic copper agent is an antibacterial inorganic material containing copper ions. Any compound may be used, and examples thereof include basic copper chloride, basic copper sulfate, basic copper carbonate, cuprous oxide, basic copper phosphate, basic copper calcium sulfate, and copper ammonium complex. Preferred is basic copper chloride or basic copper sulfate, and particularly preferred is basic copper sulfate. Although the aspect of basic copper sulfate is not particularly limited, the state of Bordeaux liquid is particularly preferable. Examples of the organic copper agent include 8-hydroxyquinoline copper, copper nonylphenol sulfonate, PCP copper, copper terephthalate, and oxindole.

  The Bordeaux liquid preferably used in the present invention is also called a lime Bordeaux liquid. After dissolving copper sulfate in water, it is added to the liquid in which quick lime is dissolved in water (lime milk). There is no particular limitation on the ratio. Usually, it is used in various concentrations such as 6-6, 6-4, 5-5, 5-4, 4-4, 4-5 and 4-12. These are expressed by the number of grams of copper sulfate and quicklime in 1 liter of Bordeaux liquid. For example, in the case of the 4-12 type, 4 g of copper sulfate and 12 g of quicklime are contained in 1 liter. Slaked lime or the like can be used in place of quick lime. Commercially available preparations include, for example, IC Bordeaux 66D, IC Bordeaux 412 (trade name, 4-12 Bordeaux equivalent) containing basic copper sulfate as an active ingredient, and the like as drugs corresponding to the Bordeaux solution.

  Moreover, as a Bordeaux liquid, what contains other compounds other than basic copper sulfate and quicklime (or slaked lime) can also be used in the range which does not impair the objective of this invention. For example, as a commercially available product, there are Z Bordeaux (trade name, manufactured by Nippon Agricultural Chemicals Co., Ltd.) and the like, in which basic copper sulfate is the main component and basic zinc sulfate and basic magnesium carbonate are dispensed. Z Bordeaux is one of the particularly preferred embodiments.

  The content of the copper agent and triphorin, which are essential active ingredients in the agricultural and horticultural fungicide composition of the present invention, is usually about 0.11% to about 90% in terms of the total amount of the copper agent and triphorin, preferably It is economical that the lower limit is in the range of about 1% and the upper limit is about 50%. As the breakdown, the copper agent is usually used in the range of 0.1% to 80% and the trifolin is used in the range of 0.01% to 50%. The blending ratio of both can be used in the range of copper agent: triphorin in the range of 1:10 to 100,000: 1, but is preferably in the range of 1: 1 to 10,000: 1. More preferably, it is in the range of 10: 1 to 1000: 1.

  The agricultural and horticultural fungicide composition of the present invention generally contains at least the above copper agent and triphorin, and is generally formulated and used in a convenient shape according to a conventional method for agricultural chemical formulations. That is, an active ingredient such as copper agent and triphorin is mixed in an appropriate inert carrier, or if necessary, together with an auxiliary agent in an appropriate ratio to dissolve, separate, suspend, mix, impregnate, adsorb or adhere. , Suitable dosage forms such as suspensions, emulsions, milk suspensions, solutions, wettable powders, granules, granule wettable powders, flowable powders, powders, tablets, jumbo drugs, seed coating preparations, liquid preparations, etc. Can be applied.

As the carrier in the agricultural and horticultural fungicide composition of the present invention, an inert carrier is preferable. Further, the form of the carrier may be either solid or liquid. Therefore, the product form of the agricultural and horticultural fungicide composition of the present invention may also be a solid product or a liquid product or a suspension product.
Examples of materials that can be used as a solid carrier include plant powders (for example, soybean powder, cereal powder, wood powder, bark powder, saw powder, tobacco stem powder, walnut shell powder, bran, fiber powder, and plant extract after extraction. ), Synthetic polymers such as pulverized synthetic resins, clays (eg kaolin, bentonite, acid clay), talcs (eg talc, pyrophyllite, etc.), silicas (eg diatomaceous earth, quartz sand, mica, white carbon ( Synthetic, highly dispersed silicic acid, also called hydrous finely divided silicon or hydrous silicic acid, some products contain calcium silicate as the main component.)}, Activated carbon, natural minerals (eg sulfur powder, pumice, attapulgite and zeolite), calcined Diatomaceous earth, brick ground, fly ash, sand, plastic carrier, etc. (eg polyethylene, polypropylene, polyvinylidene chloride, etc.) Examples include inorganic mineral powders such as calcium carbonate, chemical fertilizers such as ammonium sulfate, ammonium nitrate, urea, and ammonium sulfate, organic fertilizers, fermented animal excrement products, compost, etc., which can be used alone or as a mixture of two or more. Used in form.

  The material that can be used as a liquid carrier is selected from those having solvent ability itself, and those that can disperse the active ingredient with the aid of an auxiliary agent without having solvent ability. Water, alcohols (eg, methanol, ethanol, isopropanol, butanol, propylene glycol, etc.), ketones (eg, acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, cyclohexanone, etc.), ethers (eg, ethyl ether, dioxane, cellosolve, diester) Propyl ether, tetrahydrofuran, etc.), aliphatic hydrocarbons (eg kerosene, mineral oil, etc.), aromatic hydrocarbons (eg benzene, toluene, xylene, solvent naphtha, alkylnaphthalene, etc.), halogenated hydrocarbons (eg Loethane, chloroform, carbon tetrachloride, chlorinated benzene, etc.), esters (eg, ethyl acetate, diisopropylpropyl phthalate, dibutyl phthalate, dioctyl phthalate, etc.), amides (eg, dimethylformamide, diethylformamide, dimethylacetamide, etc.), nitriles (For example, acetonitrile, etc.), dimethyl sulfoxide, etc. can be mentioned, and these are used alone or in the form of a mixture of two or more. The liquid carrier is preferably water.

  As the auxiliary used for the purpose of assisting the dispersion of the active ingredient and / or other purposes, the following typical auxiliary agents can be mentioned. These adjuvants are used according to the purpose, and are used alone, or in some cases, two or more kinds of adjuvants are used in combination. In some cases it is also possible to use no adjuvants.

  Surfactants are used for the purpose of emulsifying, dispersing, solubilizing and / or wetting active ingredients, such as polyoxyethylene alkyl ethers, polyoxyethylene alkyl aryl ethers, polyoxyethylene higher fatty acid esters, polyoxyethylene resins. Examples include surfactants such as acid esters, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monooleate, alkylaryl sulfonates, naphthalene sulfonic acid condensates, lignin sulfonates, higher alcohol sulfates, etc. it can. Further, for the purpose of stabilizing the dispersion of the active ingredient compound, thickening, sticking and / or binding, the following auxiliary agents can be used, for example, thickening of casein, gelatin, starch, xanthan gum and the like. Auxiliary agents such as sugars, celluloses such as methylcellulose and carboxymethylcellulose, high-viscosity oils such as gum arabic, polyvinyl alcohol, pine oil and coconut oil, thixotropic substances such as bentonite, and lignin sulfonate can also be used. .

  In order to improve the fluidity of the solid product, the following adjuvants can also be used, and for example, adjuvants such as waxes, stearates and alkyl phosphates can be used. Further, as a peptizer for the suspension product, for example, an auxiliary such as naphthalene sulfonic acid condensate and condensed phosphate can be used.

  As the antifoaming agent, for example, an auxiliary agent such as silicone oil can be used. As preservatives, auxiliary agents such as parabens such as sodium benzoate, methyl paraoxybenzoate and butyl paraoxybenzoate, potassium such as potassium sorbate, 1,2-benzisothiazolin-3-one or parachlorometaxylenol Can be used.

  Further, if necessary, functional spreaders such as terpenes, polyamide resins or higher fatty acid esters of polyoxyethylene / polyoxypropylene, activity enhancers such as metabolic degradation inhibitors such as piperonyl butoxide, ethylene glycol, Anti-freezing agents such as propylene glycol, glycerin or diethylene glycol (BHA), antioxidants such as dibutylhydroxytoluene (BHT) or butylhydroxyanisole, ultraviolet absorbers such as hydroquinone compounds, benzophenone compounds or salicylic acid compounds, or methylcellulose Other adjuvants such as drift inhibitors such as polyvinyl alcohol or sodium polyacrylate can be used.

The agricultural and horticultural fungicide composition of the present invention can be used by itself as a matter of course, but it is also suitable for pests to be controlled, for the expansion of the control period, or for reducing the dosage and synergistic effects. Can be used in combination with other agricultural and horticultural insecticides, acaricides, nematicides, fungicides, biological pesticides, etc. It can also be used by mixing with growth regulators, fertilizers and the like.
In the present invention, the copper agent and the trifolin preparation can be prepared and adjusted separately according to the above, and mixed at the time of use to be used as the agricultural and horticultural fungicide composition of the present invention.

  The following plant diseases can be exemplified as the application target of the agricultural and horticultural fungicide composition of the present invention. Broadly speaking, it includes filamentous fungal diseases, bacterial diseases, viral diseases, such as incomplete fungi (for example, Botrytis disease, Helmintosporium disease, Fusarium) Genus diseases, Septoria genus diseases, Sarcospora genus diseases, Pyricularia or Magnaportaceae genus diseases, Alternaria genus diseases (e) (Rhizoctonia) disease, Puccinia disease, etc.), Venturia disease, monilinear (M diseases of the genus nilinia, diseases of the genus Unsinula, etc., such as diseases of the genus Ascochita, diseases of the genus Phomium, diseases of the genus Pythium, diseases of the genus Corticium, pyreno Diseases such as Pyrenophora), etc., such as Pseudomonas diseases, Xanthomonas diseases, Erwinia diseases, or viruses (for example, tobacco mosaic virus) It includes diseases caused by.

Examples of individual diseases include rice blast (Piculararia oryzae or Magnaporthe grisea), rice sheath blight (Rhizotonia oliumusinus), and rice seedling blight (Cochiobulus mithiusi). Graminicola, Fusarium roseum, Mucor sp., Poma sp., Tricoderma sp.), rice idiot seedlings (Gibberella fujikuroi), barley and wheat, etc. And Other host plants such as powdery mildew, barley and wheat and other eye spot diseases (Pseudocercosporella herpotriochoides), wheat etc. Sclerotinia borealis), Oat crown rust (Puccinia coronata) and other plant rust, cucumber, strawberry and other gray mold (Botrytis cinerea), tomato, cabbage and other fungal diseases (Sclerotinia Phytophthora infestans and other Various diseases such as leaf blight of plants, downy mildew of cucumber (Pseudoperonospora cubensis), downy mildew (Plasmopara viticola), apple black spot disease (Venturia inaequalis), apple spotted leaf disease (Alternaria) Spot disease (Alternaria kikuchiana), citrus black spot disease (Diaporthe citri), citrus scab (Elsinoe fawceti), sugar beet brown spot (Cercospora cercosporisca), peanut brown spot (Cercosporaco black) , Wheat leaf blight (Septoria tritici), wheat wilt Disease (Septoria nodorum), barley Kumogata disease (Rhynchosporium secalis), turf leaf rot (Rhizoctonia solani), lawn of dollar spot disease (Sclerotinia homoeocarpa), Psuedomonas genus diseases (e.g. cucumber spot Bacterial (Pseudomonas syringae pv. lachrymans), tomato bacterial wilt (Pseudomonas solanacerum) and rice blight bacterial disease (Pseudomonas glumae), Xanthomonas genus diseases (eg, Xanthomonas campiosis, rice white rot, rice wilt) Xanthomonas citri)), Erwinia diseases (for example, Erwinia carotovora) and other bacterial diseases, tobacco mosaic diseases (Tobacco mosaic virus) and other viral diseases, etc.
Preferably, it has a high control effect against cucumber powdery mildew (Sphaerotheca cucurbiae), potato and tomato blight (Phytophthora infestans).

Although the plant which can use the fungicidal composition of this invention is not specifically limited, For example, the plant shown below is mentioned.
That is, cereals (for example, rice, barley, wheat, rye, oats, corn, coconut, etc.), beans (soybeans, red beans, broad beans, peas, peanuts, etc.), fruit trees / fruits (apples, citrus fruits, pears, etc.) Grapes, peaches, plums, cherry peaches, walnuts, almonds, bananas, strawberries, etc.), vegetables (cabbage, tomatoes, spinach, broccoli, lettuce, onions, leeks, peppers, etc.), root vegetables (carrots, potatoes, sweet potatoes, radish, Lotus root, turnip, etc.), crops for processing (cotton, hemp, kouzo, mitsumata, rapeseed, beet, hop, sugarcane, sugar beet, olive, rubber, coffee, tobacco, tea, etc.), moss (pumpkin, cucumber, watermelon, Melon, etc.), pasture (orchard grass, sorghum, timothy, clover, alfalfa, etc.), turf (Korean turf, bentgrass, etc.), fragrance Yosaku products such (lavender, rosemary, thyme, parsley, pepper, ginger, etc.), it can be used flowering plants (chrysanthemum, rose, orchid, etc.) in plants such as.

  The agricultural and horticultural fungicide composition of the present invention can be used by treating a plant or a cultivation carrier with an effective amount thereof, that is, an amount effective for controlling plant diseases. Such a method of using the agricultural and horticultural fungicide composition of the present invention is also one aspect of the present invention. In this method of use, the agricultural and horticultural fungicide composition may be used in an amount effective for controlling plant diseases in the form as it is for controlling various diseases, or as it is appropriately diluted with water or suspended. It can be used by applying it to the target plants that are expected to occur, and can be used by treating it with a cultivation carrier such as soil and seedling mats for diseases that invade the root and base of the plant. It can also be used at the time of sowing, planting, and growing season by irrigation treatment, seedling box irrigation treatment, cell tray irrigation treatment, culture soil mixing treatment, seed treatment and the like.

  The “cultivation carrier” in the case of using the agricultural and horticultural fungicide composition of the present invention means a support for cultivating plants, and is a concept including “soil”. The material of the cultivation carrier is not particularly limited as long as it is a material on which a plant can grow.For example, it includes so-called various soils, seedling mats, water, etc., sand, vermiculite, cotton, paper, diatomaceous earth, Examples include agar, gel material, polymer material, rock wool, glass wool, wood chip, bark, pumice and mixtures thereof.

  As the application concentration and application amount when using the agricultural and horticultural fungicide composition of the present invention, when spraying, it is usually economical by diluting in water in the range of 100 to 2000 times. Control is possible, and effective control is possible by using the amount of sprayed water from 100 liters per 10 ares to 500 liters per 10 ares. Moreover, it can be sprayed as it is as a powder without using water, and it can be applied at a high concentration of about 10 to 100 times by a method such as soil irrigation treatment or seed treatment. In other methods, it can be used without dilution.

  The agricultural and horticultural fungicide composition of the present invention is mixed or mixed with other fungicides, insecticides, acaricides, nematicides, plant preparations, herbicides, seed disinfectants, fertilizers or soil improvement materials. Can be used simultaneously or at intervals.

  As already mentioned, in the use of the agricultural and horticultural fungicide composition of the present invention, a preparation prepared in advance as the agricultural and horticultural fungicide composition of the present invention, for example, a mixture of copper and triphorin is applied. can do. In addition, the agricultural and horticultural fungicide composition of the present invention can be prepared and used at the site of use, and for example, individual active ingredient preparation compositions and diluents may be mixed and applied during processing. .

  Further, in the present invention, in addition to the above-described method, a copper agent and triphorin are separately applied, but a method for controlling the agricultural and horticultural diseases as described above by applying both can be employed. As such an agricultural and horticultural disease control method, for example, a plant or cultivation at the same time with two types of dilutions each diluted a composition containing a copper agent as an active ingredient and a composition containing triphorin as an active ingredient The method of processing a support | carrier is mentioned.

  In addition, when applying copper agent and triphorin separately, they may be applied simultaneously, or an interval of about 2 days may be provided, but at the time when any one of the active ingredients remains in the plant or the cultivation carrier. It is preferable to apply the other active ingredient, and the above-mentioned “processing at the same time” is a concept including overlapping at least a part of the time during which both of them are processed, and it is not necessarily applied at the same time. There is no need to do work. The order in which the copper agent and triphorin are applied separately rather than simultaneously is not particularly limited, but it is preferable to apply the copper agent first in view of the fact that triphorin is easier to volatilize and decompose.

  In the present invention, the copper agent can be used for enhancing the agricultural and horticultural disease control effect of trifolin. In addition, the agricultural and horticultural disease control effect enhancement is not only the case where the strength of the effect itself is enhanced compared to the agricultural and horticultural disease control effect shown when triphorin is used alone, It is a broad concept that includes the improvement of sustainability, the complementation of the effects that trifolin originally does not have, and the synergistic effect by the combined use with a copper agent. In particular, in the present invention, a synergistic effect by the combined use of a copper agent and triphorin can be confirmed, and details thereof will be described in the following examples.

  Moreover, in this invention, there exists a difference in the volatility of both the copper agent and triphorin which are essential active ingredients, and the decomposability | degradability in an environment, and a copper agent is hard to lose | disappear compared with triphorin. For this reason, for example, when the agricultural and horticultural fungicide composition of the present invention is applied, a relatively large amount of copper agent remains even when triphorin is volatilized or decomposed to reduce or eliminate the residual amount. Therefore, in combination with the above-described synergistic effect, the residual effect can be excellent without rapidly reducing the agricultural and horticultural disease control effect.

Hereinafter, representative production examples and test examples of the agricultural and horticultural fungicide composition of the present invention will be specifically described, but the present invention is not limited to these examples.
<Production Example 1>
36 parts by weight of basic copper sulfate, 1 part by weight of trifolin, 3 parts by weight of polyoxyethylene nonylphenyl ether sulfate sodium salt, 3 parts by weight of calcium lignin sulfonate, 4 parts by weight of hydrous silicic acid and 53 parts by weight of calcined diatomaceous earth are uniformly mixed. By grinding, an agricultural and horticultural fungicide composition usable as a wettable powder was obtained.

<Production Example 2>
Mix 22 parts by weight of basic copper sulfate, 0.3 part by weight of trifolin, 1.4 parts by weight of sodium dioctylsulfosuccinate, 3 parts by weight of polyoxyethylene alkyl ether, 5 parts by weight of propylene glycol and 68.3 parts by weight of water. The mixture was wet pulverized and further 0.3 parts by weight of xanthan gum was added and mixed to obtain an agricultural and horticultural fungicide composition which was an aqueous suspension.

<Test example>
Next, test examples for confirming the plant disease control effect are shown. The following preparations were used as reagent reagents in Test Examples 1 and 2 below, and these preparations were diluted in chemical solutions of a predetermined concentration and tested.
・ Basic copper sulfate: Z Bordeaux 36% flowable (aqueous suspension) Commercially available product ・ Triphorine: 15% emulsion (Composition) Trifoline 15 parts by weight
10 parts by weight of N-methylpyrrolidone
65 parts by weight of xylene
10 parts by weight of surfactant (SP-3005X manufactured by Toho Chemical)

Test Example 1 Tomato plague ( Phytophthora infestans ) control effect test Prepared a chemical solution of the prescribed concentration and sprayed the foliage at a ratio of 200 liters / 10 ares on 4.6 leaf tomatoes (variety: Ponterosa) cultivated in pots (0.0001 ares) did. After drying, inoculated with a spore suspension of tomato blight. Seven days after the inoculation, the disease index was investigated according to the following criteria, and the control value was determined according to the following formula 1. The test was conducted in 1 ward 1 strain 3 times. The results are shown in Table 1. The disease index in the untreated area was 9.3.

Disease index criteria 0: No disease 1: Disease area rate 1-10%
2: Spot area rate 11 to 20%
3: Disease area rate 21-30%
4: Disease area ratio 31 to 40%
5: lesion area rate 41-50%
6: lesion area rate 51-60%
7: 61-70% lesion area rate
8: lesion area rate 71-80%
9: lesion area rate 81-90%
10: lesion area rate 91-100%

[Formula 1]
(Lesion area ratio of non-treated area-lesion area ratio of treated area) × 100
Control value (%) ＝ ――――――――――――――――――――――――――――
Disease area ratio of untreated area

  Moreover, the presence or absence of a synergistic effect was evaluated using the expected value of Colby calculated by the calculation formula of Colby of the following formula 2. In general, when two kinds of given active ingredients are mixed and processed, the actual measured effect is calculated by the following Colby equation (E) (the combination of two kinds of active ingredients) The control value (%) expected in the case of (2) is greater than that).), The action of the combination of the two active ingredients is determined to be synergistic.

[Formula 2]
Expected value of Colby (E) = (X + Y) − (X × Y) ÷ 100
(In the formula, X represents the control value (%) of one active ingredient, and Y represents the control value (%) of the other active ingredient.)

Test Example 2 Cucumber powdery mildew ( Sphaerotheca
cucurbitae ) Pest control effect test Cucumber (variety: Yotsuba) was cultivated in a 1/5000 Earl Wagner pot in a greenhouse, and a cucumber powdery mildew disease pot was installed around it so that natural infection occurred. When the true leaf was at the 1.1 leaf stage, a predetermined concentration of the chemical was sprayed at a rate of 200 liters per 10 ares. 8 days after the treatment, the disease index was examined in the same manner as in Test Example 1, and the control value was calculated. The test was conducted in 1 ward 1 strain 3 times. The results are shown in Table 2. The disease index in the untreated area was 9.5.

  As shown above, the combination of basic copper sulfate and triphorin had a clear synergistic effect. Since it is also effective for drug-resistant strains, crops can be protected for a longer period of time with a practical dosage.

  In the above test example, a composition (aqueous suspension) containing a copper agent (basic copper sulfate) as an active ingredient and a composition (emulsion) containing triphorin as an active ingredient should be mixed at the time of use. Has confirmed the synergistic effect of both active ingredients, but the same synergistic effect when used as a composition containing both copper and triphorin as active ingredients (for example, a premix preparation of copper and triphorin) Is obtained. Further, the same synergistic effect can be obtained when a composition containing a copper agent as an active ingredient and a composition containing triphorin as an active ingredient are each independently treated at the same time.

Claims (5)

  An agricultural and horticultural fungicide composition containing copper and triphorin as active ingredients.   The agricultural and horticultural fungicide composition according to claim 1, wherein the copper agent is one or two compounds selected from the group consisting of basic copper chloride, basic copper sulfate and organic copper.   The agricultural and horticultural fungicide composition according to claim 1, wherein the copper agent is basic copper sulfate.   A method for using an agricultural and horticultural fungicide composition comprising treating an effective amount of the agricultural or horticultural fungicide composition according to any one of claims 1 to 3 with a plant or a cultivation carrier.   A method of using an agricultural and horticultural fungicide composition, wherein an effective amount of a copper agent and trifolin is individually treated on a plant or a cultivation carrier at the same time.