JP2901667B2 - Agricultural and horticultural fungicide composition - Google Patents

Description

The present invention relates to an agricultural and horticultural fungicide composition.

(Prior Art and Background of the Invention) Many agricultural and horticultural fungicides have been conventionally provided for controlling harmful diseases which occur on crops, but improvements are still desired in various aspects.

The fact that the N-pyridylanili compound represented by the following general formula (I) exhibits an excellent growth inhibitory effect against pathogenic bacteria such as gray mold, downy mildew, and scab that are harmful to agricultural and horticultural production is disclosed in, for example, Japanese Patent Publication No. No. 52146. The present inventors have found that by using a mixture of an N-pyridylaniline compound represented by the general formula (I) with aluminum tris (ethyl phosphonate), the application rate can be reduced as compared with the case of single application. It has been found that a synergistic effect can be obtained by mixing.

That is, the present invention relates to a compound represented by the general formula (I): (Where X is a halogen atom or a trifluoromethyl group, Y is a hydrogen atom or a halogen atom, and n is 1
And an aluminum-tris (ethylphosphonate) as an active ingredient, at least one N-pyridylaniline compound represented by the formula (1):

Examples of the N-pyridylaniline-based compound include N- (3-chloro-5-trifluoromethyl-2-pyridyl) -2,6-dinitro-3-chloro-4-trifluoromethylaniline and N- (3 -Bromo-5-trifluoromethyl-2-pyridyl) -2,6-dinitro-3-chloro-4-trifluoromethylaniline, N- (3-chloro-5-trifluoromethyl-2-pyridyl) -2 , 6−
Dinitro-3-bromo-4-trifluoromethylaniline, N- (3-trifluoromethyl-5-chloro-2-
Pyridyl) -2,6-dinitro-3-chloro-4-trifluoromethylaniline, N- (3,5-dichloro-6-trifluoromethyl-2-pyridyl) -2,6-dinitro-
3-chloro-4-trifluoromethylaniline, N-
(2-chloro-4-trifluoromethyl-3-pyridyl) -2,6-dinitro-3-chloro-4-trifluoromethylaniline and the like, among which N- (3-chloro-5-trifluoromethyl) -2-pyridyl) -2,6-
Dinitro-3-chloro-4-trifluoromethylaniline (hereinafter abbreviated as NPA) is desirable.

The aluminum tris (ethyl phosphonate) is known as "Arietti". (Hereinafter, this compound is abbreviated as “arietti”) Next, test examples according to the present invention will be described.

Test Example 1 Cucumber Gray Mold Disease Prevention Test Cucumber (cultivar: four-leaf) was cultivated in an unglazed pot having a diameter of 9 cm.
NPA wettable powder mixed with (7) and Arrietti wettable powder (trade name, manufactured by Rhone Poulin Co., Ltd .: 80% active ingredient, 20% dispersant, etc.) are dispersed in water, and each is adjusted to a predetermined concentration. The sprayed 10 ml was sprayed using a spray gun. twenty four
After standing in a greenhouse at 2525 ° C. for 24 hours, a cucumber gray mold fungus disk (agar punch), which had been cultured on a potato-glucose agar medium (PDA medium), was placed on a cucumber leaf and inoculated. On the third day after the inoculation, the lesion length of the first leaf was examined, and the disease incidence in each untreated group was calculated as a percentage, and the disease incidence in each treated group was determined as a percentage, assuming no disease as 0. The result is
It is shown in the table. In the table, "ppm" represents the concentration of the active ingredient.

Test Example 2 Cucumber Downy Mildew Prevention Test Cucumber (cultivar: four-leaf) was cultivated in an unglazed pot having a diameter of 9 cm, and when the two-leaf stage was reached, Formulation Example 3 (1) to
NPA wettable powder mixed with (7) and Arrietti wettable powder (trade name, manufactured by Rhone Poulin Co., Ltd .: 80% active ingredient, 20% dispersant, etc.) are dispersed in water, and each is adjusted to a predetermined concentration. The sprayed 10 ml was sprayed using a spray gun. twenty four
After standing overnight in a greenhouse at 2525 ° C., a spore suspension of cucumber downy mildew was sprayed and inoculated. Six days after the inoculation, the lesion area of the first leaf was examined, and the extent of the disease was determined as a percentage in the same manner as in Test Example 1. Table 2 shows the results.

As can be seen from the above test examples, the fungicidal composition of the present invention provides a superior fungicidal effect as compared with the application of each single agent. That is, by mixing the N-pyridylaniline compound with Arrietty, a control effect superior to the theoretical value expected from the effect of each single agent can be obtained.

The fungicide composition of the present invention is a cultivated crop infected with or at risk of harmful fungi, such as cucumber, tomato, vegetables such as eggplant, rice, cereals such as wheat, beans, apples, pears, and the like. Grapes, fruit trees such as citrus, excellent bactericidal action by applying to potatoes, such as powdery mildew, downy mildew, mildew, gray mold, scab, spot leaf spot, black spot, Late rot, plague, ring rot, blast,
Sheath blight, seedling blight, suitable for controlling white silk, etc.
Among them, it is most suitable for controlling downy mildew, gray mold, scab, spot leaf spot, black spot, late rot, plague and ring spot.

The germicidal composition of the present invention can be applied by diluting the active ingredient as it is in water, as in the case of ordinary pesticides, and can be applied with various adjuvants, emulsions, wettable powders, granules It can also be formulated and applied in such forms. Further, the above-mentioned active ingredients may be individually compounded and formulated with an auxiliary, and they may be mixed. Examples of the auxiliary include diatomaceous earth, slaked lime, calcium carbonate, talc, white carbon, kaolin, bentonite, siegrite, talc, and other solid carriers, toluene, xylene, solvent naphtha, ethanol, dioxane, acetone, isophorone, and methyl isobutyl ketone. , Dimethylformamide, dimethylsulfoxide,
Solvents such as N-methyl-2-pyrrolidone, sodium alkyl sulfate, sodium alkyl benzene sulfonate, sodium lignin sulfonate, polyoxyethylene glycol alkyl ether, polyoxyethylene lauryl ether,
Spreading agents such as polyoxyethylene alkylaryl ethers and polyoxyethylene sorbitan fatty acid esters,
Surfactants and the like.

The application concentration of the fungicidal composition of the present invention is a pharmaceutical formulation,
Application time, it can not be specified unconditionally because it varies depending on conditions such as the type of harmful bacteria, but in general, N-pyridylaniline-based compound is 1 to 10,000 ppm, Arrietty is 1 to 10,000p
pm, preferably 10-1,000ppm for the former, 10-2,000p for the latter
pm.

Next, formulation examples of the agricultural and horticultural fungicide composition of the present invention will be described, but the present invention is not limited thereto.

Formulation Example 1 (1) NPA 20 parts by weight (2) Arrietti 50 parts by weight (3) Talc 24 parts by weight (4) 2,4,7,9-tetramethyl-5-decyne-4,7-diol 0.6 parts by weight (5) Polyoxyethylene phenylalkylaryl ether 4 parts by weight (6) Diatomaceous earth 1.4 parts by weight The above components were uniformly mixed to obtain a wettable powder.

Production Example 2 (1) 2.5 parts by weight of NPA (2) 2.5 parts by weight of Arrietti (3) 95 parts by weight of talc The above components were uniformly mixed to prepare a powder.

Production Example 3 (1) 50 parts by weight of NPA (2) 37 parts by weight of talc (3) 6 parts by weight of finely divided silica (4) 3 parts by weight of a condensate of β-naphthalenesulfonic acid sodium formalin (5) polyoxyethylene octyl phenyl ether 1 Part by weight (6) 2 parts by weight of polyoxyethylene alkylaryl ether sulfate (7) 1 part by weight of oxyethylated polyarylphenol phosphate The above (1) to (7) were mixed to prepare a wettable powder. Next, this wettable powder and Arrietty wettable powder (trade name, manufactured by Rhone Poulin Co .: containing 80% of active ingredient, 20% of dispersant, etc.) in a ratio of 1: 1.
The mixture was mixed at a ratio of 6 to obtain a wettable powder.

Continued on the front page (58) Fields surveyed (Int.Cl. ⁶ , DB name) A01N 43/40 A01N 57/12 A01N 59/06 CAPLUS (STN) REGISTRY (STN) WPIDS (STN)

Claims (2)

(57) [Claims] 1. The compound of the general formula (I) (Where X is a halogen atom or a trifluoromethyl group, Y is a hydrogen atom or a halogen atom, and n is 1
A fungicidal composition for agricultural and horticultural use containing at least one N-pyridylaniline-based compound represented by the following formula: and aluminum tris (ethyl phosphonate) as active ingredients. 2. N- (3-chloro-5-trifluoromethyl-2-pyridyl) -2,6-dinitro-3-chloro-4
The fungicide composition for agricultural and horticultural use according to claim 1, which comprises -trifluoromethylaniline and aluminum tris (ethyl phosphonate) as active ingredients.