JPS5841804A - Agricultural and horticultural germicidal composition - Google Patents

Abstract

PURPOSE:The titled composition, containing a cyclic imide germicide mixed with a specific compound as active constituents, capable of exhibiting a higher selective germicidal effect on chemical-resistant germs than in a simple chemical, and useful for controlling pathogenic germs growing in various crops. CONSTITUTION:An agricultural and horticultural germicidal composition containing one or more N-phenylcarbamate compounds of formulaI(X is lower alkyl, lower alkoxyl or halogen; R is CH3 or C2H5) which are germicides capable of exhibiting a powerful selective germicidal effect on chemical-resistant germs and one or more cyclic imide germicides, e.g. N-(3',5'-dichlorophenyl)-1,2-dimethylcyclopropane-1,2-dicarboximide of formula II, used as an agricultural and horticultural germicide, capable of exhibiting improved effects on the control of gray mold, Sclerotinia rot, etc., and having a great yield increasing effect on the crops as active constituents. The composition has high safety for men, cattle and fishes without giving the phytotoxicity to the agricultural useful crops.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the general formula [wherein X is the same or different, and OR representing a lower alkyl group, a lower alkoxyl group, or a halogen atom represents a methyl group or an ethyl group. ] An N-phenylcarbamate compound represented by, for example, seven or more of the compounds shown in Table 1, and a cyclic acid fungicide, 1, for example, M-(J', j'-dichloro) represented by the formula phenyl)-no,2-dimethylcyclopropane-/, 2-dicarboximide (hereinafter referred to as metal compound 0), s-<3', s'-dichlorophenyl)-/
- Isoprovir Rubamoylimidazolidine, 4t
-dione (hereinafter referred to as compound (b)), represented by!
-(J', 3'-dichlorophenyl)-j-methyl-5-vinyloxazolidine.

Ethyl (Re)-5-(J',j'-dichlorophenyl)-j-methyl-,4I-dioxoxazolidine-j-carboxylate (hereinafter referred to as metal compound (0)) This is a fungicidal composition for agriculture and horticulture, characterized in that it contains as an active ingredient seven or more types selected from compounds (hereinafter referred to as compound (a)) and the like.

Table 1 (Note) In the following test examples and formulation examples, the compound honorifics shown are commonly used.

Cyclic squid-based carbonicides are used to treat gray mold, gray mold, and gray mold on various crops.
It is widely used as a fungicide for agricultural and horticultural purposes due to its excellent effectiveness in controlling sclerotium, etc., and greatly contributes to increased crop production.

In recent years, due to the rise in oil prices, greenhouse horticulture for cultivating Shibaus has been forced to save on oil consumption for heating, and as a result, gray mold disease, which is active at low temperatures, has become a serious problem. Under these circumstances, cyclic imide fungicides, which are effective drugs for controlling gray mold, play an important role.

Furthermore, there is no known practical fungicide that is sufficiently effective in controlling gray mold to replace this type of fungicide.

However, it has become clear that, in general, the case of ITP-based fungicides, in which fungicides of the same type are continuously used, is no exception.

In other words, if any of the above-mentioned cyclic imide fungicides is continuously applied to crops for the purpose of eliminating botrytis, it will cause botrytis disease (hereinafter referred to as drug-resistant bacteria) that is resistant to any of the cyclic imide fungicides. ) has occurred, and cases where the control effect has decreased are being recognized.

In consideration of the above circumstances, the present inventors have determined whether a fungicide that selectively shows a bactericidal effect against drug-resistant bacteria has a high disease control effect in fields where drug-resistant bacteria occur, and whether drug-resistant bacteria and susceptible bacteria are In many cases, these fungicides or the aforementioned y-phenylcarbamate compounds cannot be expected to have a sufficient disease control effect by using them alone. We investigated the disease control effect of using a mixture of seven or more types of N-phenyl carbamate chemical metals and seven or more types of cyclic imide fungicides. As a result, as is clear from the test examples described later,
When a mixture of drug-resistant bacteria and susceptible bacteria is inoculated, the control effect is better than when N-phenyl carbamate compounds or cyclic imide fungicides are used alone, or when both are used in combination. A significantly higher tendency was observed. Therefore, the agricultural and horticultural fungicidal composition according to the present invention has high practical value as a fungicide that exhibits excellent pesticidal effects in any field. Furthermore, the fungicidal composition of the present invention prevents the appearance of drug-resistant bacteria even if there is a concern about their spread by continuously spraying a cyclic imide fungicide in fields where drug-resistant bacteria have not appeared. be able to.

The agricultural and horticultural fungicidal composition according to the present invention can be used to control pathogenic bacteria occurring in various crops.

For example, cucumber, eggplant, tomato, strawberry,
Botrytis cin
area), cucumber, eggplant, green pepper, lettuce, celery, kidney bean 1. Sclerotinia fungus (8clsrotin) that occurs on dice, azuki beans, potatoes, L.
ia sclerotiorum), 8clerotinia ci, which occurs on peach and cherry blossoms.
neroa), Chieuri, Melongo vine blight fungus (M
It can be used to control insects such as ycosμereMa (to) 10nig).

On the other hand, it has been revealed that the fungicidal composition of the present invention is highly safe for humans, livestock, and fish, and can be used without causing any harm to agriculturally useful crops.

When the fungicidal composition of the present invention is actually applied, it can be used in its pure form without adding any other ingredients, or it can be mixed with a carrier to make it easier to use as a fungicide, weed killer, or plant growth regulator. It can be used in commonly used forms such as powders, irrigants, oils, emulsions, tablets, granules, fine granules, etc.
It can be used as either a sol or a flowable.

The active compounds (including mixed ingredients) are generally present in said preparations.
With weight /, θ~? j, θchi, preferably ko, θ″
-wJ including normal/θ foul 1) i0~/θθ
The application amount of t is appropriate. Furthermore, the concentration used is θ, J
It is desirable to use a range of 1 to 0, S, S, but these amounts and concentrations vary depending on the dosage form, application time, method, location, target disease, and target crop area, so it is not possible to increase or decrease them without being limited to the above ranges. There is no problem.

Furthermore, it can be used in combination with other fungicides, herbicides, plant growth regulators, insecticides, etc. For example, (K)-
/-(2,dazol-phenyl)-da,gudimethyl-,2-(/,2,4/-)riazol-/-yl)-
/-penten-3-ol, goochlor-3-methylbenzothiazolone, S-normal-butyl 8-bara-tert-butylbenzyldithiocarbonimidate, 0
．． 0-dimethyl 0-(co,6-cyclorughemethylphenyl)phosphorothioate, N-trichloromethylthiodes cyclohexene-/, -1 dicarboximide, cis-M'-(/.

/, 2.2-tetrachloroethylthio)-gucyclohexene/, kodicarboximide, N-(trichloromethylthio)phthalimide, polyoxin, streptomycin, zinc ethylene bisdithiocarbamate, zinc dimethylthiocarbamate, manganese ethylene bisdithiocarbamate, bis (H,y-dimethylthiocarbamoyl)disulfide, tetrachloroisophthalonitrile, l-hydroxyquinoline, dodecylguanidine acetate,! .

6-dihy1fQ-11 methyl-/, daoxathiin-
3-carboxanilide, y-dichlorofluoromethylthio-N,N-dimethyl-N-7enylsulfamide, /
-(4I-chlorophenoxy)-j, J-dimethyl-/
-(/l-i e a-triazol-/-yl)-
Corbutanone,/Corbis(3-methoxyluponyl-thiourido)benzene, Methyl N-(λ.

6-dimethylphele)-N-methoxyacetyl-methylglycinate, aluminium ethyl sulfite, methyl/-(butylcarbamoyl)benzimidazole-ylcarbamate,! -(4t-thiazolyl)benzimidazole, methylbenzimidazole-ylcarbamate, etc., fungicide, 0.0-dimethyl 0
-(Goonitro-3-methylphenyl)-sulforothioate, 0-(4I-cyanophenyl)0.0-dimethyl-sulforothioate, 〇-(41-cyanophenyl)0
-ethylphenylphosphonothioate, 0. o-Dimethyl 8-(M-methylcarbamoylmethyl)phosphorodithioate, -1methoxygH-/, J, -penzodioxa-sulfide, 0°0-dimethyl 8-(/-ethoxycarbonyl-7-phenyl methyl)
Organophosphorus insecticides such as phosphorodithioate, α-Schifno 3-phenoxybenzyl λ-(4I-chlorophenyl)invalerate, 3-phenoxybenzyl-1-1-dimethyl-3-(co,-1-dichlorovinyl) It can be used in combination with pyrethroid insecticides such as cyclopropane carboxylate, α-cyano-J-phenoxybenzyl-1-1 dimethyl-3-(2,-1 dibromovinyl) cyclopropane carboxylate, etc. , none of these will reduce the control effect of each single agent. Therefore, it is possible to control two or more types of pests at the same time, and a synergistic effect by mixing them is also expected.

Next, test examples and formulation examples will be given to further clarify the usefulness of the agricultural pesticide composition according to the present invention.

Test example / Tomato gray mold control effect A sandy loam soil was filled in a plastic pot with a volume of θd, and tomatoes (variety: Fukuju λ) were sown. This was cultivated in a greenhouse for a week, and tomato seedlings at the peak stage were grown. To this, a water dilution of the test compound in the form of an emulsion or wettable powder was added per pot.
Spray on the stems and leaves. After air-drying the chemical solution, gray mold disease @ (Bo
A conidial liquid obtained by mixing drug-resistant and susceptible bacteria of S. trytis cln@raa) was spray inoculated.

After the plants were kept in a greenhouse for 1 day at 2θ°C, the disease state was observed.

The disease severity was calculated by the Queen's method. That is, according to the degree of appearance of lesions in the investigation system, they were classified into indices of θ, θ, j, /, Ko, and Da, and the severity of the disease was calculated using the following formula: Working: No lesions are observed on the surface Oθ,j
・・・・・・・Setoguchi r1 Fallen Saki Kengu (moving yoke-q to age the inner spots 0/・・l・Φ・I mvchi Ij
eIII axis + I#@@t 30%
1 da ・e・・−・・ I s0chi V
above ? Subsequently, the control value was calculated using the following formula. .

As a result, as is clear from Table 2, compounds (1), (
b), (Q), or (a) and a compound (ha~(:V
), a superior control effect was observed compared to when they were sprayed alone. By thoroughly grinding and mixing 7 parts of clay, 70 parts of clay, and 70 parts of talc, the main ingredient content is 2.
- obtain a powder.

Formulation example K Wettable powder compound (/2) λθ part, compound *((+) 70 parts, diatom ±
By thoroughly grinding and mixing 4 parts of white carbon, 0 parts of white carbon, 3 parts of wetting agent (sodium lauryl sulfate), and 2 parts of dispersing agent (calcium lignin sulfonate), the main ingredient content becomes 3θ.
- Obtain the irrigation agent.

Formulation example 3 Wettable powder compound (1) 70 parts, compound (a) 410 parts, diatom ±
411 parts, wetting agent (calcium alkylbenzene sulfonate), 2.7 parts, and dispersing agent (calcium lignin sulfonate),! , If part J is thoroughly ground and mixed, the main ingredient content is obtained! Obtain θchi's irrigation agent.

Formulation Example D Wettable powder compound (/7) J 7 parts, Compound Chi (a) sθ part, diatom ±l 1 part, wetting agent (calcium flukylbenzenesulfonate) 3.5 parts, and dispersant (calcium ligninsulfonate) ) If 5 parts of J and 5 parts are thoroughly ground and mixed, an irrigation agent with a main ingredient content of 7j- can be obtained O

Claims (1)

[Claims] General formula [wherein X is the same or different 9, a lower alkyl group, a lower alkoxyl group, and 9 represents a halogen atom. R represents a methyl group or an ethyl group. ] A fungicidal composition for agriculture and horticulture, comprising as active ingredients one or more N-7-enyl carbamate compounds and one or more cyclic imide Ml agents.