JPH049308A - Germicide composition for agriculture and horticulture - Google Patents

Abstract

PURPOSE:To obtain the title germicide containing a crystalline zeolite belonging to a specific faujasite group as an active ingredient and capable of exhibiting remarkable effects on various damages of plants by disease, reducing a chemical amount used and remarkably improving phytotoxicity to applicable crops. CONSTITUTION:The aimed germicide composition containing a crystalline zeolite belonging to a faujasite group and being a calcium ion-containing A type zeolite expressed by the formula (M is Na or K; 0<x<1 and 0<y<1, provided that x+y<=1, 2 <=z<=2.5 and 0<=w<=20) and subjected to partial ion exchange with a copper ion as an active ingredient. Germicidal activity base on the copper is remarkably improved, compared with a copper-substituted zeolite obtained by substituting Na ion of a conventional Na ion-containing zeolite with copper ion. The aimed composition is sufficiently applicable also to crop field difficult to use a well-known metal-containing germicide such as Bordeaux mixture and inexpensive and economically advantageous, compared with a zeolite, etc., described in Japanese patent publication No. 1989-156905.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides an agricultural and horticultural fungicide characterized by containing calcium ion-containing type A zeolite, which has been partially ion-exchanged with copper ions, as an active ingredient. Regarding.

<Prior Art> Conventionally, copper-free agents such as Bordeaux liquid have been used in fields such as fruit trees and sulfur vegetables. Further, Japanese Patent Publication No. 61-23164 describes a copper-substituted aluminonilicade in which sodium ions are replaced with copper ions.

In addition, Japanese Patent Publication No. 1-156905 describes a certain type of copper-substituted zeolite, but since 3 <5iCh/AlzCh≦12, A
The zeolite is not a type zeolite and does not contain calcium ions, so it is completely different from the zeolite of the present invention.

<Problems to be Solved> Conventional copper fungicides have limited range of application because they are effective against a narrow range of diseases and cause chemical damage to crops.

In addition, conventional copper-substituted aluminonricades have insufficient effects per copper and cannot be said to be necessarily satisfactory, and the development of high-performance drugs that are less harmful and effective at lower doses is eagerly awaited. ing.

<Means for Solving the Problems> Under these circumstances, the inventors of the present invention have conducted intensive studies to find a high-performance drug that causes less drug damage and is effective at a low dose. -C Formula [I] The calcium ion-containing type A zeolite partially ion-exchanged with copper ions (hereinafter referred to as the substance of the present invention) has extremely excellent bactericidal activity and does not cause any problematic phytotoxicity. The present invention was based on the discovery that there is no such thing.

That is, the present invention is based on the general formula % [where M represents a sodium atom or a potassium atom, and x, y, z and W each represent a numerical value within the following range.

0<x<1.0<3'<1 (time x y≦12≦2
≦2.5.0≦w≦20] An agricultural and horticultural fungicide 1 is provided, which contains crystalline zeolite belonging to the Founyakeite group as an active ingredient and is represented by the following formula.

Since the substance of the present invention contains calcium ions,
Compared to conventional copper-substituted zeolite in which sodium ions are replaced with copper ions, the bactericidal activity per copper has been significantly improved.

The content of copper in the substance of the present invention can be determined arbitrarily, but
Preferably it is 17% by weight or less in terms of w-0.

The content of calcium in the substance of the present invention',! Although it can be determined at will, it is preferably 1% by weight or more when converted to w=0.

Next, a method for producing the substance of the present invention will be described.

The substance of the present invention can be produced by a known method, for example, by mixing an aqueous solution of sodium silicate or potassium silicate in a predetermined concentration ratio of each method (for example, sodium aluminate or potassium aluminate water) and an aqueous solution of sodium silicate or potassium silicate. 3A or 4A type zeolite, which is a precursor of the substance of the present invention, is produced by mixing in water and a liquid and hydrothermally synthesized, and then using these zeolites), the following (1) or (2) is carried out. ) can be produced by conducting reactions such as

(1) Zeolite obtained by exchanging all or part of the potassium ions or sodium ions, which are the constituent components of type 3A or type 4A zeolite, with calcium ions using a calcium salt and a water-soluble copper salt are mixed in water. Or perform an ion exchange reaction in alcohol.

(2) A calcium salt and a water-soluble copper salt are simultaneously used in 3A type or 4A type zeolite to simultaneously ion-exchange potassium ions or sodium ions into calcium ions and copper ions.

Examples of calcium salts used in the above ion exchange reaction include calcium chloride, calcium bromide, calcium nitrate, etc. Examples include organic acid salts such as acid salts, calcium formate, and calcium acetate. Examples of water-soluble copper salts include mineral acid salts such as 2i chloride, cupric sulfate, and cupric nitrate; organic acid salts such as cupric acetate and cupric formate; and ammonia copper complex salts. , preferably cupric chloride, cupric sulfate
Examples include mineral acid salts such as copper and cupric nitrate.

Since the substance of the present invention exhibits excellent effects against plant diseases, it can be used for various purposes as an active ingredient in agricultural and horticultural fungicides.

Plant diseases that can be controlled by the substance of the present invention include the following diseases.

Soft rot of various vegetables (Carotoνora)
, Pseudomonas solanaceae
lanacreum), bacterial spot disease of cucumber (P
seudomonas Iachrzmans).

Pseudomonas fungal disease of vegetables
” Lmaculicola), Rhinoceros Q disease (Xanth
omonas estris), tumefaciens disease (
Tomato canker blight (Yori 1 ± light ym search m mlch month circumference 1 indentation y method) Rice rice blight bacterial disease (Pseudomonas g) ma
e) Tobacco wildfire disease (Pseudomonas ta
baci), citrus canker disease (Xanthomon
as 7 pv, ci tri), rice leaf blight (Xanthomonas spp.), downy mildew of vegetables and radish (paddy dish ora brassica)
e) Spinach leaf blight (A dish parallel to a plate),
Tobacco mildew (conformal mildew)
, downy mildew of cucumbers
sis) Downy mildew of Fudou (dizziness)
la), downy mildew of Apiaceae plants (7n1vea), late blight of hornworts, strawberries, and ginseng (PhtOht)
h Oracactorum), gray late blight of tomato cucumber (Hadan Adan Gyoyu C parallel and lice), late blight of pineapple (7
cinnaIIIomi), potatoes, tomatoes,
Eggplant plague C pond ha acho 1nfestans),
Tobacco, fava beans, green onion epidemic (haha)
tianae var, n1cotianae)
, spinach damping-off (hdanki m sp, ), cucumber seedling damping-off (hthiuii 南厘■佾艮danburi), wheat brown snow rot (Pithium 'L), tobacco seedling damping-off (h 帥dano+ 载木阜anum), soybean Pyt
hium Rot (hdandanm ada plate dermat
um, mu” 畦 Rainbow heels tomo m, P, 1rre ular
e, P.

d+P, ultimate), rice blast disease (7
Wataru a 7, Sesame leaf blight (Cochliobolus
7) Apple scab disease (νenturia kangenamishadan), rot disease (Valsamali), spot leaf fall disease (Alternaria mali), pear black spot disease (keishu rnaria kikuchiana)
, g star disease (Venturia nashi), citrus black spot disease (however, Nijitan e Godan■), oyster anthracnose disease (Kanmanai ga μ Misaki lice), defoliation disease (Stripe thorn 1) .-5 line 1
Glomerel late rot disease (Glomerel)
gray mold (limb), leaf blight (tritici), leaf blight (tritici),
Le tos haeria nodorum) anthracnose of cucurbits (Colletotrichum 7), vine blight (Toribe), tomato ring blight (Alternaria 5olani), tobacco blight (Alternaria k plate pressure) average), anthracnose (Colletotrichum tabacum)
), brown spot disease of sugar beet (7beticola), summer lean disease of potato (Alternaria solani)
), groundnut brown spot disease
icola), soybean brown spot (Colletotrichum sp.), black spot (Colletotrichum sp.), purpura (7ra kikuchii), etc. can be mentioned.

The substance of the present invention can be used as an agricultural and horticultural fungicide in fields, paddy fields, orchards, tea gardens, pastures, lawns, etc., and can be used in combination with other plant disease control agents to increase the bactericidal effect. We can also expect an increase.

Furthermore, it can be used in combination with insecticides, acaricides, nematicides, herbicides, plant growth regulators, and fertilizers.

When the substance of the present invention is used as an active ingredient of a disinfectant, it may be used as it is without adding any other ingredients, but it is usually mixed with a solid carrier, liquid carrier, surfactant, or other formulation reinforcing agent. Then, it is formulated into granules, wettable powders, suspensions, powders, etc. and used. The content of the substance of the present invention in the preparation is 0.1 to 9
9.9%, preferably 1-99%.

The solid carriers mentioned above include fine particles such as kaolin clay, attabulgite clay, bentonite, acid clay, pyrophyllite, talc, diatomaceous earth, calcite, corn cob flour, walnut shell flour, urea, ammonium sulfate, and synthetic hydrous silicon oxide. Examples of the carrier include powder or granules, and examples of the liquid carrier include water.

Emulsification, dispersion,? Surfactants used for W exhibition, etc. include alkyl sulfate salts, alkyl (aryl) sulfonate salts, dialkyl sulfosuccinate salts, polyoxyethylene alkylaryl ether phosphate salts, naphthalene sulfonic acid formalin condensates, etc. anionic surfactant, polyoxine ethylene alkyl ether,
Examples include nonionic surfactants such as polyoxyethylene polyquine propylene bronoquinone polymer, sorbitan fatty acid ester, and polyoxyethylene sorbicun fatty acid ester. Strengthening agents for formulations include lignin sulfonate, alginate, polyvinyl alcohol, gum arabic, CMC (carboxylic methyl cellulose), and PAP.
(acidic isopropyl phosphate), etc.

In addition, examples of methods for applying the agricultural and horticultural fungicide of the present invention include foliage spraying, soil treatment, seed disinfection, etc.
Any application method commonly used by those skilled in the art can be used.

When the substance of the present invention is used as an active ingredient of a fungicide for agriculture and horticulture, the application amount of the active ingredient depends on the target crop, target disease, degree of disease occurrence, formulation form, application method, application timing, weather conditions, copper content, etc. Although it varies depending on the amount, it is usually 0.3 to 600 g per are, preferably 0.3 to 300 g. When applying a wetting agent, suspending agent, etc. diluted with water, the application concentration is 0. .015-1.5%, preferably 0.015% to 1.5%, preferably 0.015% to 1.5%, preferably 0.
03-0.6% Teari powder, granules, etc. are applied as is without any dilution.

<Examples> The present invention will be described in more detail below, but the present invention is not limited thereto.

First, a formulation example will be shown. Note that parts represent parts by weight.

Formulation Example 1 A wettable powder is obtained by thoroughly pulverizing and mixing 50 parts of the substance of the present invention, 3 parts of calcium lignosulfonate, 2 parts of sodium lauryl sulfate, and 45 parts of synthetic hydrous silicon oxide.

Formulation Example 2 A wettable powder is obtained by thoroughly pulverizing and mixing 95 parts of the present invention '1t, 3 parts of calcium lignosulfonate, and 2 parts of sodium lauryl sulfate.

Formulation Example 3 A suspension is obtained by mixing 50 parts of the substance of the present invention, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC, and 44 parts of water and wet-pulverizing the mixture until the particle size of the active ingredient becomes 5 microns or less. It will be done.

Formulation Example 4 5 parts of the substance of the present invention, 85 parts of kaolin clay, and 1 part of talc
A powder is obtained by thoroughly grinding and mixing 0 parts.

Formulation Example 5 Inventive product! 20 parts of synthetic hydrous silicon oxide, 1 part of calcium lignin sulfonate, 30 parts of bentonite and 47 parts of kaolin clay were thoroughly ground and mixed, water was added and the mixture was thoroughly kneaded, followed by granulation and drying to obtain granules. It will be done.

Next, test examples will show that the substance of the present invention is useful as a pesticide for agriculture and horticulture.

In addition, in this test, the test substance was prepared by the operation shown below.

Substance of the present invention (1) Nato 26.3% by weight, ^It'343.2% by weight and 1Iffi.

30.5% by weight of sodium aluminate 106.
Sodium hydroxide 8 containing 2g and 77.5% by weight of Na2O
9.67g was dissolved in 582.6g of distilled water. This solution was added to 186.21 g of an aqueous solution of sodium silicate containing 9.2% by weight of Nano and 29.0% by weight of Sing while stirring. The substance obtained here is 4,]Na2O・^hos・2.05iOz 9
It is shown as 2.782O.

Next, the reactor was sealed and stirred at room temperature for 3 hours and then at 60°C for 3 hours. The precipitated powder crystals were then collected by filtration under reduced pressure, washed with distilled water until the pH of the washing solution reached about 8-9, and dried at 120°C for 16 hours.

Next, to this crystal 10H, IN calcium acetate aqueous solution 100%
After adding d, the mixture was stirred at room temperature for 4 hours to perform a calcium ion exchange reaction. After the ion exchange reaction was completed, the reaction solution was filtered, and the obtained crystals were washed with distilled water until the pH reached around 7, and then dried at 120'C for 16 hours.

Next, take 5 g of the calcium ion-exchanged crystals, add 0.04M copper sulfate aqueous solution 118 paper, adjust the pH of the system to 6.9 using 10% caustic soda, and stir at room temperature for 4 hours. A copper ion exchange reaction was performed. After the ion exchange reaction was completed, the reaction solution was filtered, and the resulting crystals were washed with residual water until no sulfate groups were detected, and then dried at 120°C for 16 hours.

The powdered substance thus obtained is X&! i! It was confirmed by diffraction method that it is a crystalline zeolite belonging to the faujasite group. Furthermore, elemental analysis shows that S i /
Al atomic ratio is 115, copper content is 4.3% by weight,
The content of calcium is 2.9% by weight, the substance is 0.27CuO.0.29CaO.0.44Na2O.
Al2Oi ・2.30Si(h・5.21H20
It is indicated by.

Substance of the present invention (2) 100.0 g of sodium aluminate containing 26.3% by weight of Nano, 43.2% by weight of Al2O2 and 0.5% by weight of H2O and 85.5g of sodium hydroxide containing 77.5% by weight of Nazo were distilled. Water 580. Dissolved in Og. This solution was mixed with N11209.2% by weight, Sing
Aqueous solution of sodium silicate containing 29.0% by weight 185
．． 0 g with stirring.

The substance obtained here is 4.17Na2OHAl2Oi ・2.11SiOz
- Shown as 97.5H20.

The reactor was then sealed and kept at room temperature for 3 hours at 60″C.
The mixture was stirred for 3 hours. Then, the precipitated powder crystals were collected by filtration under reduced pressure, washed with distilled water until the pH of the washing solution became about 8-9, and dried at 120''C for 16 hours.

Next, add 100 g of IN calcium acetate aqueous solution to 10 g of this crystal.
After adding m, the mixture was stirred at room temperature for 4 hours to perform a calcium ion exchange reaction. After the ion exchange reaction was completed, the reaction solution was filtered, and the obtained crystals were washed with distilled water until the pH reached around 7, and then dried at 120° C. for 16 hours.

Next, 5 g of this calcium ion-exchanged crystal was taken, 118 d of 0.04 M copper sulfate aqueous solution was added, and the pH of the system was adjusted to 6.9 using 10% caustic soda, and the mixture was stirred at room temperature for 4 hours. A copper ion exchange reaction was performed. After the ion exchange reaction was completed, the reaction solution was filtered, and the resulting crystals were washed with distilled water until no sulfate groups were detected, and then dried at 120°C for 16 hours.

The powdery substance thus obtained was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group. Further, elemental analysis revealed that the Si/Al atomic ratio was 1.21, the copper content was 12.1% by weight, and the calcium content was 3.1% by weight, and the substance was 0.68Cu0 ・0.28Ca0 ・0.04Na2O
・Al2Os ・2.42SiO□・ 2.10H2
Indicated by 0.

Present invention product 1t(3) Crystals before calcium ion exchange were obtained by the same preparation method as the present invention material (1). Next, 5g of crystals obtained in this way
0.073M calcium chloride aqueous solution 59〆 and 0.29
After simultaneously adding 4M copper sulfate aqueous solution 59ate,
The mixture was stirred for hours to perform an ion exchange reaction. After the ion exchange reaction was completed, the reaction solution was filtered, and the obtained crystals were washed with distilled water until no chlorine ions and sulfur groups were detected.
Dry at 0°C for 16 hours. The powdery substance thus obtained was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group. Also, elemental analysis shows that the Si/Al atomic ratio is 1.15, the copper content is 14.4% by weight, and the calcium content is 1.9% by weight.
and the substance is 0.82Cu0 ・0.17Ca(l 0.01N
a2O・AI2Oz・2.30SiO,・2.5
It is indicated by 0Hz.

Substance of the Present Invention (4) Crystals were obtained after completion of the calcium ion exchange reaction and before copper ion exchange using the same preparation method as for the substance of the present invention (1). Next, 59 d of a 0.90 M aqueous calcium chloride solution and 59 d of a 0.08 M aqueous copper sulfate solution were simultaneously added to 5 g of the crystals thus obtained, and the mixture was stirred at room temperature for 4 hours to carry out an ion exchange reaction. After the ion exchange reaction was completed, the reaction solution was filtered, and the resulting crystals were washed with distilled water until no chloride ions or sulfate groups were detected, and then dried at 120''C for 16 hours.

The powdery substance thus obtained was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group. In addition, elemental analysis shows that S i /A 1
The atomic ratio is 1.15, the content of copper is 4.3% by weight, the content of calcium is 8.4% by weight, and the substance is 0.24CuO・0.75Ca(l 0.0INa2
O・Al2O3・2.30SiOz・3.04)12O
It is indicated by.

Substance of the Present Invention (5) Crystals before calcium ion exchange were obtained by the same preparation method as the substance of the present invention (1). Next, crystal 10 obtained in this way
After adding 0.076M calcium chloride aqueous solution 236+d to g, the mixture was stirred at room temperature for 4 hours to perform a calcium ion exchange reaction. After the ion exchange reaction is completed, the reaction solution is filtered,
The obtained crystals were washed with distilled water until no chloride ions were detected, and then dried at 120°C for 16 hours.

Next, 5 g of this calcium ion-exchanged crystal was taken, and after adding 0.20 Mg acid sulfur aqueous solution 60 IIi, the pH of the system was adjusted to 6.9 using 10% caustic soda, and the mixture was stirred at room temperature for 4 hours. A copper ion exchange reaction was performed. After the ion exchange reaction was completed, the reaction solution was filtered, and the obtained crystals were washed with distilled water until no sulfate groups were detected, and then dried at 120°C for 16 hours.

The powdery substance thus obtained was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group. Also, elemental analysis showed that the Si/^1 atomic ratio was 1.15, the copper content was 16.1% by weight, the calcium content was 2.3% by weight, and the substance was 0.80CuO・0.18Ca. (l 0.02Na2
OA12O* ・2.3SiOz ・0.02H
, O.

Substance of the Present Invention (6) Crystals before calcium ion exchange were obtained by the same preparation method as the Substance of the Present Invention (1). Next, crystal 10 obtained in this way
After adding 236 ml of a 0.191M calcium chloride aqueous solution to the mixture, the mixture was stirred at room temperature for 4 hours to perform a calcium ion exchange reaction. After the ion exchange reaction was completed, the reaction solution was filtered, and the obtained crystals were washed with distilled water until no chloride ions were detected, and then dried at 120°C for 16 hours.

Next, take 5g of this calcium ion-exchanged crystal, add 60 pieces of 0.20M copper sulfate aqueous solution, and then adjust the pH of the system.
was adjusted to 6.9 using 10% caustic soda, and then heated to 4 at room temperature.
The mixture was stirred for hours to perform a copper ion exchange reaction. After the ion exchange reaction was completed, the reaction solution was filtered, the obtained crystals were washed with distilled water until no sulfate groups were detected, and then incubated at 120°C for 16 days.
Let dry for an hour.

The powdery substance thus obtained was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group. In addition, elemental analysis revealed that Si/A
The l atomic ratio is 1.15, the content of copper is 17.0% by weight, the content of calcium is 1.4% by weight, and the substance is 0.85CuO・0.11Ca(10,04Na2O
・Al2O* ・2.30SiO,・o,osH2
Indicated by 0.

Substance of the Present Invention (7) Crystals were obtained after calcium ion exchange reaction and before copper ion exchange using the same preparation method as the substance of the present invention (1).

Next, 670 jf of a 0.0033 M copper sulfate aqueous solution was added to 5 g of the crystals thus obtained, and the mixture was stirred at room temperature for 10 minutes to perform a copper ion exchange reaction. After the reaction solution was filtered, the above-mentioned copper ion exchange reaction was repeated again on the recovered crystals. After a total of 5 copper ion exchange reactions, the reaction solution was filtered, and the obtained crystals were treated with distilled water to remove sulfuric acid. After washing until no longer detected, it was dried at 120°C for 16 hours.

The thus obtained powdery substance was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group with a crystallinity of 50%. Also, according to elemental analysis, the Si/At atomic ratio is 1.15 and the copper content is 6.3!
%, the content of calcium is 6.1% by weight, and the substance is 0.35CuO・0.54CaO・0.11Na20
'A1403'2.30SiO□・2.75)1
．． Indicated by 0.

Comparative substance 1t(a) Crystals before calcium ion exchange were obtained by the same preparation method as the substance (1) of the present invention. Next, 60 - of a 0.16 M copper nitrate aqueous solution was added to 5 g of this crystal, and the pH of the system was adjusted to 6.9 using 10% caustic soda, and the mixture was stirred at room temperature for 4 hours to perform an ion exchange reaction. . After the ion exchange reaction was completed, the reaction solution was filtered, and the resulting crystals were washed with distilled water until copper ions and nitrate groups were no longer detected, and then dried at 120°C for 16 hours.

The powdery substance thus obtained was confirmed by X-ray diffraction to be a crystalline zeolite belonging to the faujasite group. In addition, elemental analysis revealed that Si/A
The l atomic ratio is J, 15, the copper content is 10% by weight,
The substance is 0.63Cu0 ・0.37Na20 ・Al2
O3' 2.30SiOz 4.91H1O.

In the following test example, the control efficacy is determined by visually observing the diseased state of the test plant at the time of investigation, that is, the degree of bacterial flora and lesions on leaves, stems, etc., and if no bacterial flora or lesions are observed, r5J, 10%.
If it is recognized to a certain extent, it will be ``4'', and if it is recognized to be around 30%, it will be ``3''.
", if it is observed in about 50%, it is "2", if it is observed in about 70%, it is "1", and if there is no difference from the disease onset state when no compound is tested, it is "O", and it is graded into 6 stages. Evaluate each 5. 4. 3. 2. 1.
Indicated by O.

Test Example 1 Cucumber and disease control effect (preventive effect) A plastic bottle was filled with sandy loam, and cucumbers were sown and grown in a greenhouse for 20 days. A test drug prepared as a hydrating powder according to Formulation Example 1 was diluted with water to a specified concentration on cucumber seedlings that had developed their second true leaves, and was sprayed on the foliage so that it adhered sufficiently to the leaf surface. . After spraying, a spore suspension of cucumber and disease bacteria was sprayed and inoculated. After inoculation, the plants were covered for 1 day at 20°C and humid, and then grown for 5 days under light to investigate the pesticidal efficacy. The results are shown in Table 1.

Test Example 2 Tomato Phytophthora control test (preventive effect) A plastic bottle was filled with sandy loam, tomatoes (ponchirosa) were sown, and grown in a greenhouse for 20 days. 2nd to 3rd
A test chemical prepared as a hydrating powder according to Formulation Example 1 was diluted with water to a predetermined concentration and sprayed on the foliage of tomato seedlings with developed true leaves so as to sufficiently adhere to the leaf surface. After spraying, a spore suspension of Phytophthora tomato was sprayed and inoculated. After vaccination, 20
After covering for 1 day under high humidity at 1°C, the plants were grown under lighting for 5 days to investigate the pesticidal efficacy. The results are shown in Table 2.

Test Example 3 Japanese radish soot disease control test (preventive effect) A plastic bot was filled with sandy loam, and radish (60-day radish) was sown and grown in a greenhouse for 6 days. A test drug prepared as a hydrating powder according to Formulation Example 1 was diluted with water to a predetermined concentration, and the solution was sprayed onto radish seedlings with developed cotyledons so as to sufficiently adhere to the leaf surface. After the spraying, a spore suspension of the radish rust fungus was sprayed and inoculated. After inoculation, the plants were grown under 1B1 at 18° C. under high humidity, and then grown under lighting for 3 days to investigate the control efficacy. The results are shown in Table 3.

Table 1 Test Example 4 Cucumber Spot Bacterial Disease Control Test (Residual Effect Test) A plastic bot was filled with sandy loam, and cucumbers (joint half white) were sown and grown in a greenhouse for 35 days. Thereafter, the test drug prepared as a wettable powder according to Formulation Example 1 was diluted with water to a predetermined concentration, and the solution was sprayed on the leaves so as to sufficiently adhere to the leaf surface. After spraying, the plants were cultivated in a greenhouse for 7 days (20° C. during the day and 17° C. at night) and then inoculated with a spore suspension of cucumber spot bacterium. After inoculation, the plants were kept in a humid environment for about 24 hours and then grown for another 10 days under the above greenhouse conditions. Thereafter, the control effect was calculated according to the development of lesions on each inoculated leaf. The results are shown in Table 4.

Test Example 5 in Table 5 Rice blight control test (preventive effect) A plastic bot was filled with sandy loam, and rice (Kinki No. 33) was sown and grown in a greenhouse for 70 days.

A test chemical prepared as a wettable powder according to Formulation Example 2 was diluted with water to a predetermined concentration, and was sprayed onto rice seedlings so that it would sufficiently adhere to the ears. After spraying, the plants were air-dried and then sprayed with a spore suspension of rice blight and inoculated. After inoculation, the plants were kept in a dark and humid room at 23°C for 1 day, and then allowed to develop for 9 days under greenhouse conditions at 27°C to investigate the control efficacy. The results are shown in Table 5.

Table 5 has great advantages. Furthermore, it is cheaper and economically advantageous than certain zeolites (for example, the zeolite described in Japanese Patent Publication No. 1-156905).

<Effect of the invention>

Claims (1)

[Scope of Claims] An agricultural and horticultural fungicide characterized by containing crystalline zeolite belonging to the faujasite group, represented by the following general formula, as an active ingredient. xCuO・yCaO・(1-x-y)M_2O・Al_
2O_3・_zSiO_2・wH_2O [In the formula, M represents a sodium atom or a potassium atom, x, y, z
and w each represent a numerical value within the following range. 0<x<1, 0<y<1 but x+y≦1 2≦z≦2.5, 0≦w≦20]