KR20010078568A - Composition for protecting cucumber or strawberry from powdery mildew and fungicidal preparation containing same - Google Patents

Abstract

PURPOSE: Provided is a composition for the prevention and extermination of powdery mildew in cucumbers and strawberries. And the agricultural chemicals containing the same are also provided, which are effective on powdery mildew without causing the environmental contamination. CONSTITUTION: The composition for the prevention and extermination of powdery mildew contains an effective amount of nonionic surfactants selected from C10 - C12 alcohol ethoxylate having 4 to 9 additional moles of ethylene oxide and rauryl alcohol ethoxylate having 4 to 9 additional moles of ethylene oxide and carriers. Wherein the amount of nonionic surfactants is 1 to 90 wt.% and carriers are water-blended organic solvents, natural or synthetic minerals, natural polymers or synthetic polymers. The composition also contains active materials having prevention effects on powdery mildew, wherein the active materials are dodecylbenzensulfonate bis-ethylenediamine copper(II) salts(DBEDC).

Description

COMPOSITION FOR PROTECTING CUCUMBER OR STRAWBERRY FROM POWDERY MILDEW AND FUNGICIDAL PREPARATION CONTAINING SAME}

The present invention relates to a composition capable of efficiently controlling powdery mildew, which occurs in crops such as strawberries and cucumbers, with a specific surfactant as its main ingredient, and in particular, the present invention relates to a pesticide active ingredient currently used for powdery mildew control. The present invention relates to a composition and its use which contain no or little amount and are excellent in controlling powdery mildew of cucumbers and strawberries.

In modern agriculture, pesticides are essential for the stable mass production of high quality crops. These pesticides are used differently depending on the type of crops and pests, and hundreds of pesticides are manufactured and sold in Korea. Pesticides used for the protection of crops should have good control against weeds and pests, but they should not be toxic or large to humans or livestock, and should not be easily degraded in the environment and act as environmental pollutants.

In recent years, a so-called resistance problem is emerging that the control effect is lowered even when a large amount of pesticide is sprayed by continuous and continuous use of the pesticide. In addition, agricultural products are often detected even when toxic pesticides are detected above the allowable value, thereby losing their value as food.

Developing pesticides that are not toxic to humans or livestock and that do not act as a contaminant in the environment is the pesticide researchers' biggest goal. However, this cannot be easily accomplished, and multifaceted studies have been conducted to reduce the use of pesticides in several ways, such as by using synergistic pesticides or by using a potentiator or mixing with a synergistic pesticide. It is done.

In addition to pesticides, substances that control the weeds and pests are known in addition to pesticides, and new materials are constantly being discovered, and are often not commercially useful due to lower control effects or higher manufacturing costs than conventional pesticides. However, in some cases, such substances may have a good control effect on new control targets, and may have a synergistic effect when mixed with existing pesticides.

Many kinds of surfactants are commercialized, and for various purposes such as emulsifiers and dispersants, they are already an essential ingredient in the preparation of pesticides. These surfactants have recently been added as a potency enhancer in agrochemical products or mixed with diluents. Although the surfactant may have some control effect against weeds or pests by itself, it is rare that the surfactant can play a role as an excellent pesticide.

It is known that the surfactant shows an excellent control effect against powdery mildew of apples and roses. For example, Clifford et al. Show that different surfactants control apple powdery mildew at different levels. Among them, Ethylan CP (polyoxyethylene alkylphenyl ether) has the best control effect. Have been reported (see Clifford, DR, and EC Hislop. (1975) Surfactants for the control of apple mildew, Pestic. Sci. , 6, 409-4180), and Evans et al. Japanese ethers and polyoxyethylene cetyl ethers have been reported to have the best control against powdery mildew in roses (Evans, E., J. Marshall, BJ Couzens, and RL Runham (1970); The curative activity of nonionic surface-active agents against some powdery mildew diseases, Ann. Appl. Biol. , 65, 473-480 and German patent application GB-1185634.

Powdery mildew is frequently found in crops such as cucumbers and strawberries, as well as in roses and apples. Powdery mildew, which occurs in various crops, varies slightly between crops, and therefore, different kinds of pesticides exhibit excellent control effects (Pesticide Industry Association, Pesticide Use Guidelines). In particular, the present inventors have conducted intensive studies on the control of powdery mildew of cucumbers and strawberries, and show excellent control effects, and when mixed with conventional pesticides, show very high control effects even with a very small amount of pesticides, and the value is much higher than that of pesticides. Discovering other surfactants from previous studies, which are inexpensive, have very low toxicity to humans or livestock, and are easily removed by washing with water even if they remain in fruits and vegetables, and are easily decomposed and lost in the environment. The present invention has been completed.

Therefore, the object of the present invention is excellent in powdery mildew control effect, which can be used for efficient control of powdery mildew of cucumber and strawberry, does not cause harm to crops, low toxicity to human body or livestock, easy to obtain, inexpensive and biodegradable It is to provide a surfactant that is easy and compatible with other pesticides.

Another object of the present invention is to provide a pesticide composition comprising the surfactant.

In order to achieve the above object, the present invention provides at least one nonionic interface selected from C10 / C12 alcohol ethoxylate having 4 to 9 ethylene oxide added moles and lauryl alcohol ethoxylate having 4 to 9 ethylene oxide added moles. Provided is a composition for controlling powdery mildew of cucumber or strawberry, comprising an effective amount of an active agent.

The present invention also provides a pesticide formulation comprising the composition for controlling the present invention together with pesticides for preventing powdery mildew of cucumber or strawberry.

Hereinafter, the present invention will be described in more detail.

The composition for controlling cucumber and strawberry powdery mildew according to the present invention contains a specific nonionic surfactant which is effective for controlling powdery mildew of cucumber and strawberry, and may include a solvent and a small amount of emulsifier as a carrier. Good pesticides can be added to formulate pesticide formulations.

When the surfactant is the main ingredient, the composition of the present invention shows excellent therapeutic effect by diluting in water and spraying on cucumbers and strawberries which have already caused powdery mildew. When spraying a mixture of pesticides with a good preventive effect and the surfactant of the present invention can be obtained in a smaller amount with an excellent therapeutic effect and preventive effect.

According to the present invention, a nonionic surfactant polyoxyethylene lauryl ether having a hydrophilic polyoxyethylene formed by polymerization of 4 to 9 moles of ethylene oxide as a surfactant having an excellent effect on controlling powdery cucumber and strawberries. Also called lauryl alcohol ethoxylate, hereinafter abbreviated as 'LE-X', X is the number of moles of ethylene oxide added, 75% of lauryl alcohol and 24 to 30 myristyl alcohol are used as raw materials for synthesizing LE-X. %, 1% decyl alcohol and less than 5% cetyl alcohol), nonionic surfactant C10 / C12 alcohol ethers having a hydrophilic polyoxyethylene made by polymerization of 4 to 9 moles of ethylene oxide (hereinafter ' Weak in C1012-X ', X is the number of moles of ethylene oxide added, and the raw material for synthesizing C1012-X contains 52% of lauryl alcohol and 35% of decyl alcohol).

Surfactant as a main component in the composition for controlling the present invention is in the range of 10 to 90% by weight is effective in controlling powdery mildew of cucumber and strawberry.

In the composition for control of this invention, in addition to the said surfactant main component, water-soluble solvents, such as propylene glycol monomethyl ether (PGME) and N -methyl- 2-pyrrolidone (NMP), a non-aqueous solvent which has methylnaphthalene etc. as a main component Mineral powders such as synthetic silica, diatomaceous earth, kaolin, and the like may be used as carriers in amounts ranging from 10 to 90% by weight, and conventional dispersants such as polyoxyethylene nonylphenyl sulfonate, polyoxyethylene lauryl sulfate, sodium Lignosulfonates and the like can be used in amounts ranging from 2 to 10%.

The control composition of the present invention can exhibit an excellent control effect at a concentration of 100 μg / ㎖ to 1,000 μg / ㎖ against powdery mildew of cucumber and strawberry based on the surfactant active ingredient.

The surfactant composition for powdery mildew control according to the present invention may exhibit a high control effect even with a small amount of pesticide when formulated using a pesticide having excellent powdery mildew prevention effect.

The powdery mildew preventive pesticide that can be used in the powdery mildew preparation of the present invention is not particularly limited, but for example, dodecylbenzenesulfonate bis-ethylenediamine copper (II) complex Organic coppers such as salts (common name DBEDC or Sanyol) are suitable.

The pesticide preparation of the present invention preferably contains powdery mildew preventive pesticide in an amount ranging from 1 to 50% by weight, and the ratio of the powdery mildew control surfactant and the preventive pesticide is 1: 1 to 20: 1 in weight ratio. Effective in

Hereinafter, the present invention will be described in detail with examples and test examples, which are not intended to limit the present invention.

Example 1 Test of the Determination of Surfactants Against Cucumber and Strawberry

Cucumber seeds (white rice white tea, Donghan Hannongmyong Co., Ltd.) were sown in Bunon Sangto No. 3 (manufactured by Bunong Industrial Co., Ltd.) and cultivated until the first leaf period. Seedlings were transferred to a disposable resin cup (66 mm in diameter and 66 mm in height) containing Bu-Nong Soil No. 5, and cultivated in greenhouse conditions (temperature 20-40 ° C., natural light and natural humidity, tap water spraying water) until the fifth season. The plant was used for the experiment as it was planted in a cup.

Strawberries were planted in pots (105 mm in diameter and 95 mm in height) and grown in greenhouse conditions (temperature 20-40 ° C., natural light and humidity, tap water spray water) until fruit ran. Plants were used in the experiments as they were planted in pots.

Various surfactants shown in Table 1 were dissolved in distilled water to prepare 500 µg / ml, 1000 µg / ml and 2000 µg / ml aqueous solutions. Using a hand-held sprayer, sprayed on five leaf cucumbers and berries with fruit, and grown in a greenhouse. After 7 days of spraying, the degree of symptom and symptom were examined by the tube, and among the results, the results of the test against cucumber were shown in Table 1 below. The number of repetitions per treatment was 5 repetitions.

Surfactant (ethylene oxide addition mole number) Weakness due to concentration ^* 2000 µg / ml 1000 µg / ml 500 µg / ml Butyl Alcohol Ethoxylate (3) 0 0 0 Octyl alcohol ethoxylate (5) 0.25 0 0 C1012-7 1.0 0 0 LE-5 1.0 0 0 Lauric Acid Ethoxylate (9) 0 0 0 Tridecyl Alcohol Ethoxylate (7) 1.25 0 0 Tridecyl Alcohol Ethoxylate (10) 0 0 0 Cetyl Alcohol Ethoxylate (12) 1.0 0.25 0 Stearyl Alcohol Ethoxylate (10) 0 0 0 Stearic Acid Ethoxylate (9) 0 0 0 Oleyl alcohol ethoxylate (7) 0.75 0.25 0 Oleic Acid Ethoxylate (9) 0.25 0 0 Sotananol 70 ^** 3.0 0.5 0 Castor Oil Ethoxylate (17) 0 0 0 Sodium Dioctyl Sulfosuccinate 1.0 0.5 0 Silhouette L-77 ^*** 0.75 0 0 * Criteria for visual inspection: 0 = no damage, 1 = mild, no harm to growth, 2-5 = increased necrotic size or growth inhibition ** polyoxyethylene monohydroxyalkyl ether, (Note ) Coseal Products *** Polyoxyethylene Trimethyl Siloxane, Dongbu Hannong Chemical Products Co., Ltd.

As can be seen in Table 1, the cucumber did not cause weakness at a surfactant concentration of 1000 μg / ml or less, or only a slight weakness such that there was no problem in growth.

In addition, strawberries were safer from surfactant damage than cucumbers.

Example 2 Screening of Surfactant for Cucumber Powdery Disease Control

One-leaf cucumbers were planted in the Wagner Pot (1 / 5,000a) and grown up to six-leaf plants in the greenhouse, causing a natural outbreak of powdery mildew. Various surfactants, which were tested for harm to plants in Example 1, were diluted in water to prepare 250 µg / ml, 500 µg / ml and 1,000 µg / ml aqueous surfactant solutions. In addition, as a control pesticide, fenarimol emulsion (trade name Fenari, Tong Yang Chemical Co., Ltd.) was diluted in water to prepare a 31.25 μg / mL solution having a common concentration, and diluted again with water to 15.6 μg / ml and 7.8 μg /. Ml of spray solution was prepared.

Cucumber leaves with powdery mildew were sprayed using a hand sprayer to the extent that the aqueous solution of the surfactant and the control pesticide solution flowed down. Sprays were sprayed twice a week, and after 14 days from the initial treatment, the degree of disease development was examined. The bottle control effect was calculated by Equation 1, and the results are shown in Table 2 below.

Surfactant (ethylene oxide addition mole number) % Control according to the concentration of surfactant 250 µg / ml 500 µg / ml 1,000 µg / ml ^a) EC ₅₀ (μg / ml) Octyl alcohol ethoxylate (5) 11.2 11.2 16.2 > 2,000 C1012-7 20.2 41.9 47.3 985 LE-5 29.7 54.0 63.5 611 Lauric Acid Ethoxylate (9) 8.6 10.8 20.2 > 2,000 Tridecyl Alcohol Ethoxylate (7) 15.3 16.2 20.2 > 2,000 Cetyl Alcohol Ethoxylate (12) 17.5 21.5 28.4 > 2,000 Stearyl Alcohol Ethoxylate (10) 9.9 16.2 12.1 > 2,000 Stearic Acid Ethoxylate (9) 1.7 10.8 8.5 > 2,000 Oleyl alcohol ethoxylate (7) 12.6 20.1 39.2 1,304 Oleic Acid Ethoxylate (9) 9.9 24.3 24.3 > 2,000 Castor Oil Ethoxylate (17) 0 14.9 1.7 > 2,000 Coco fatty acid ethoxylate 2.2 6.3 11.2 > 2,000 Sodium Dioctyl Sulfosuccinate 18.9 21.5 28.4 > 2,000 Sodium Dodecylbenzene Sulfonate 4.5 18.9 29.7 1,591 % Controlled by Control Pesticide Concentration 7.8 µg / ml 15.6 μg / ml 31.25 µg / ml EC ₅₀ (μg / ml) Fenix emulsion ^b) 31.1 46.3 47.3 32.1 a) concentration of surfactant that inhibits powdery mildew by 50% b) control pesticide

As can be seen in Table 2, among the surfactants, powdery mildew control effect was shown to be lauryl alcohol ethoxylate (LE) and C1012 alcohol ethoxylate (C1012), which is a control pesticide at the concentration of 500 µg / ml or more Equivalent to or higher than the tanning agent, which is superior to cetyl alcohol ethoxylate or oleyl alcohol ethoxylate, which are known to have a high control against powdery mildew in apples and roses. Of course, the concentration of the surfactant required for the control of cucumber powdery mildew is much higher than the concentration of the control pesticide tangerine, but it is commercially useful because the material cost is low, and there is little concern about toxicity or environmental pollution to humans or livestock.

Example 3: Measurement of Cucumber Powdery Disease Control Effect According to Ethylene Oxide Addition Degree of Surfactant

Ethylene oxide addition polymerization degree of hydrophilic polyoxyethylene of lauryl alcohol ethoxylate (LE), C1012 alcohol ethoxylate (C1012) and oleyl alcohol ethoxylate among surfactants which had the best effect of controlling cucumber powdery mildew in Example 1 The bottle control effect according to the test in the same manner as in Example 2, the results are shown in Table 3.

Surfactant (ethylene oxide addition mole number) % Controlled by concentration 250 µg / ml 500 µg / ml 1,000 µg / ml C1012-5 34.4 57.5 57.5 C1012-7 34.4 49.0 57.5 LE-5 30.8 42.9 67.2 LE-10 5.2 10.1 12.5 LE-25 13.8 19.8 32.0 Oleyl Alcohol Ethoxylate (5) 13.8 29.5 45.3 Oleyl alcohol ethoxylate (7) 8.9 28.3 42.9 Oleyl Alcohol Ethoxylate (10) 22.3 33.2 40.5 Oleyl Alcohol Ethoxylate (20) 12.5 4.0 13.8 % Controlled by Control Pesticide Concentration 7.8 µg / ml 15.6 μg / ml 31.25 µg / ml Fenix Emulsion ^* 27.1 45.3 46.6 Control pesticide

As can be seen in Table 3, 5 and 7 moles of ethylene oxide added moles, C1012-5 and C1012-7, and LE-5 with 5 moles of ethylene oxide added moles are all used as a control pesticide, the funari tangerine, at a concentration of 500 μg / ml or more. The control effect on cucumber powdery mildew was higher than oleyl alcohol ethoxylate.

Example 4 Measurement of Cucumber Powdery Disease Control Effect by Mixing Treatment of LE-5 and DBEDC

After diluting DBEDC emulsion (trade name Sanyoru, 20%, Korea Sampoong Co., Ltd.) in water and adding LE-5 to prepare a spray solution of the composition shown in Table 4, the effect of controlling cucumber powdery mildew in the same manner as in Example 2 Was measured and the results are shown in Table 4.

LE-5 concentration (μg / ml) DBEDC concentration (µg / ml) 0 25 50 100 200 400 0 0 ^a) 0 19.2 26.9 39.6 45.2 125 0 13.5 39.4 40.4 44.2 51.9 250 14.4 23.1 38.5 45.2 53.8 68.3 500 27.9 36.5 38.5 52.9 59.6 60.6 1,000 24.0 32.7 34.6 46.1 60.6 71.2 a) Each figure is the cucumber powdery mildew control rate (%) calculated by Equation (1).

As can be seen in Table 4, the effect of controlling cucumber powdery mildew by LE-5 and DBEDC was relatively low, but this is dependent on the onset environment, so it was not difficult to prove the superiority of the present invention. In other words, when spraying LE-5 or DBEDC alone, the powdery mildew control effect was relatively low, but when the two components were mixed, the powdery mildew effect was significantly higher. This is because LE-5's powdery mildew treatment effect and DBEDC's powdery mildew prevention effect worked simultaneously. Therefore, it can be seen that the powdery mildew control agent selected in the present invention is effective even when mixed with the conventional powdery mildew preventive pesticides.

Example 5 Strawberry powder control effect measurement by mixing treatment of LE-5 and DBEDC

When powdery mildew occurred naturally in strawberries grown as in Example 1, LE-5 was added to the DBEDC emulsion diluent to prepare a spraying solution having the composition shown in Table 5, and sprayed to the extent that the chemical solution flowed to the leaves.

Spraying twice a week and two weeks after the initial drug treatment was investigated powdery powder caused by strawberry fruit is shown in Table 5.

Treatment contents Treatment concentration (µg / ml) Strawberry powdery mildew control (%) DBEDC 400 65 LE-5 1,000 59 DBEDC + LE-5 100 + 500 71

As shown in Table 5, the DBEDC treatment group had a control value of 65% at 400 µg / ml, which is the recommended concentration in the Pesticide Instruction Manual (Pesticide Industry Association 1998, page 116), but the concentration of LE-5 was 1,000 µg / ml. The control price was almost equal to 59% at. However, when DBEDC was diluted below the recommended concentration and 500 μg / ml of LE-5 was added, the control value was the highest. Therefore, it is proved that LE-5 can exhibit a high control price while significantly lowering the concentration of pesticide use.

Example 6: Formulation of pesticide composition for controlling powdery mildew of cucumber and strawberry

In the present invention, 5g of C1012-5, C1012-7, and LE-5, which are found to be effective in controlling powdery mildew of cucumber and strawberry, are weighed into sample bottles each by 5g, and propylene glycol monomethyl ether (hereinafter referred to as 'PGME' is weak). ), N -methyl-2-pyrrolidone (hereinafter referred to as 'methylpyrrolidone'), cocosol 200 ^R (Kocosol 200; methylnaphthalene solvent, manufactured by Yugong Co., Ltd.), methanol, and 5 g each And mixed to prepare a surfactant liquid preparation for powdery mildew control. In addition, 5g of C1012-5, C1012-7, and LE-5 were each adsorbed to 4 g of Tix- O- sil 34M (synthetic silica powder, Hanbul Chemical Co., Ltd.), pulverized, and powdered again. 5 g of polyoxyethylene nonylphenyl sulfonate (hereinafter referred to as 'PNS') as a dispersant was adsorbed to 5 g of Tix- O- sil 34M (synthetic silica powder, Hanbul Chemical Co., Ltd.), and ground to powder. 9g of this surfactant adsorption powder and 1g of a dispersant powder were mixed to prepare a powdery mildew control surfactant wetting agent (see Tables 6 to 8 below).

Ingredient Name Composition (%) and Physical Properties of LE-5 Formulation for Powder Flour Control Liquid Preparation 1 Liquid Preparation 2 Liquid Formulation 3 Liquid Formulation 4 Hydration 1 LE-5 50 50 50 50 50 Dispersant - - - - 5 (PNS) carrier 50 (Kocosol 200) 50 (PGME) 50 (methylpyrrolidone) 50 (methanol) 45 (Tix- O -sil) Solubility oil paint Dissolution Dissolution Dissolution Hydration Dispersion Diluent Stability stability stability stability stability Sedimentation

Ingredient Name Composition (%) and Physical Properties of C1012-5 Preparation for Powdery mildew Control Liquid Formulation 5 Liquid Preparation 6 Liquid Preparation 7 Liquid Preparation 8 Hydration 2 C1012-5 50 50 50 50 50 Dispersant - - - - 5 (PNS) carrier 50 (Kocosol 200) 50 (PGME) 50 (methylpyrrolidone) 50 (methanol) 45 (Tix- O -sil) Solubility oil paint Dissolution Dissolution Dissolution Wetting Diluent Stability stability stability stability stability Sedimentation

Ingredient Name Composition (%) and Physical Properties of C1012-7 Preparation for Powdery mildew Control Liquid Preparation 9 Liquid Preparation 10 Liquid Formulation 11 Liquid Preparation 12 Hydration 3 C1012-7 50 50 50 50 50 Dispersant - - - - 5 (PNS) carrier 50 (Kocosol 200) 50 (PGME) 50 (methylpyrrolidone) 50 (methanol) 45 (Tix- O -sil) Solubility oil paint Dissolution Dissolution Dissolution Wetting Diluent Stability stability stability stability stability Sedimentation

1 g of each of the surfactant solution and the hydrating agent for powdered powder control prepared as described above were dropped into a beaker containing 500 ml of water and dissolved or hydrated. The beaker was sealed with a wrap and the change was observed while leaving at room temperature.

Among the liquid formulations, the formulation using Cocosol 200 as a solvent, when dropped in water, was not miscible with water but was emulsified by a powdery mildew control surfactant, and stirred lightly to produce a very stable emulsion. Formulations using water-soluble (or water-miscible) solvents readily dissolved when dropped in water, resulting in a very clear or relatively clear solution. The hydrating agent sank easily wet off the surface of the water and was evenly dispersed by light stirring. The hydrous diluent was precipitated over time, but since the surfactants are all dissolved in water and submerged, it is a solid carrier, which shows no effect on the drug. Therefore, it was found that the surfactant formulation for controlling powdery mildew of cucumber and strawberry of the present invention exhibits convenient physical properties.

Example 7: Combination preparation of a powdery mildew control surfactant and powdery mildew preventive

5.9 g of DBEDC raw material (purity 85%) and 25 g of LE-5 were weighed into a sample bottle, and 5 g of sodium dodecylbenzene sulfonate (hereinafter referred to as 'NaDBS') was added thereto. 64.1 g of methanol was added thereto and dissolved to prepare a surfactant-pesticide mixture for powdery mildew control as shown in Table 9. In addition, methylpyrrolidone was added instead of methanol to prepare a surfactant-pesticide mixture for powdery mildew control. 1 g of this liquid formulation was dropped in a beaker containing 500 ml of water and tested for solubility and stability. The results are shown in Table 9.

Ingredient Name Composition (%) and Physical Properties of LE-5 and DBEDC Mixture for Powder Flour Control Liquid Preparations 13 Liquid Formulation 14 LE-5 25.0 25.0 DBEDC Original Title 5.9 5.9 NaDBS 5.0 5.0 carrier 64.1 (Methanol) 64.1 (methylpyrrolidone) Solubility Dissolution Dissolution Dispersibility Stable solution Stable solution

As can be seen in Table 9, LE-5 and DBEDC mixture for powdery mildew control was easily dissolved in water when diluted in water to produce a stable solution.

Surfactant composition of the present invention effective in controlling cucumber and strawberry powdery mildew can be used safely in the cultivation of fruit and vegetables for simple washing by replacing the conventional pesticide products that are toxic to humans or livestock and risk of environmental pollution. In addition, since it is cheaper than pesticides, the manufacturing cost can be greatly reduced by substituting a part of the pesticides, and at the same time, the disease control effect against powdery mildew can be greatly improved.

Claims (7)

(a) Non-ionic surfactant effective amount selected from the group consisting of C10 / C12 alcohol ethoxylates having 4 to 9 ethylene oxide added moles and lauryl alcohol ethoxylates having 4 to 9 ethylene oxide added moles as an active ingredient. And (b) carrier Containing, powder for controlling powdery mildew of cucumber or strawberry. The method of claim 1, Composition comprising the nonionic surfactant in an amount in the range of 1 to 90% by weight. The method of claim 1, Carrier is water miscible A composition characterized in that it is an organic solvent, natural or synthetic minerals, natural polymeric materials or synthetic polymeric materials. (a) powdery mildew preventing active substance of cucumber or strawberry; (b) at least one nonionic surfactant selected from C10 / C12 alcohol ethoxylates having 4 to 9 ethylene oxide addition moles and lauryl alcohol ethoxylates having 4 to 9 ethylene oxide addition moles; and (c) carrier Containing, pesticide composition for controlling powdery mildew of cucumber or strawberry. The method of claim 4, wherein The active substance is dodecylbenzenesulfonate bis-ethylenediamine copper (II) complex salt (DBEDC), characterized in that the composition. The method of claim 5, A composition comprising 1 to 20% by weight of DBEDC and 5 to 34% by weight of a nonionic surfactant. The method of claim 5, A composition, characterized in that the carrier is a water miscible solvent or mineral powder.