JPS5942309A - Fungicidal composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fungicidal composition and a method for treating fungal diseases of cultivated plants.

The present invention provides fungicidal compositions comprising sulfur and a pyrimidine compound of Formula I: where X is chlorine or fluorine.

It has been discovered in the present invention that a combination of both of the above materials is particularly effective for controlling or combating fungal diseases of cultivated plants such as vines, especially vines, top fruits and vegetables. Ta. The composition is suitable for the powdery mildew, Uncinula necatol (Unei) of the vine.
nula naaator) s Apple tree Podosphaera leukotriforce (PodosphaeraL@u
cotrjoha) and eucurb
lts) of Erysiphue cicolacearum
heeichoracearum) and Sphaerotheea fuli
glnea) was found to give good results. The compounds of formula I are known fungicides and are described, for example, in British Patent No. 1.21g & 23, the effectiveness of which is categorically modified by the coexistence of sulfur according to the invention.

Accordingly, the present invention encompasses a method of treating plant disease caused by fungi, comprising applying to the plant a fungicidally effective amount of a fungicidal composition as defined above. The composition is preferably applied to the leaves of the crop at any time before harvest. The amount and number of applications depends on the severity of the fungal disease and the symptoms of the crop. However, it has been found that the number of treatments required for mold control can be reduced through the use of the compositions of the present invention and thereby achieve labor savings benefits.

Regarding the amounts of active materials used, sulfur is preferably applied by foliar spraying at a rate of 1,000 to 10,000 per hectare, and the compound of formula 1 is preferably applied by foliar spraying at a rate of 3 to 10,011 per hectare. .

The ratio of sulfur: compound of formula (■) is preferably l:l or 10
:l~1000:/, for example 10:/~left 00
:/,for example! 0:/~soo:i.

In the compositions of the present invention, the sulfur component may be in any convenient form when used with the compound of formula (I) to provide a satisfactory composition, but is preferably micronized sulfur or colloidal sulfur in the final product. Preferably, the particle size is 7 to 20 microns. Among the five active compounds subsumed by formula I, fenarimol, i.e. the compounds in which X is chlorine, are preferred;
is fluorine) may equally be used. Although both of the above-mentioned compounds are well known in the mold killing industry and are typically the sole active ingredients in formulations, they are used in conjunction with sulfur in the present invention.

Although the compositions of the present invention are typically combined with seven or more inert, non-phytotoxic carriers, it is further understood that the compositions of the present invention may contain additional fungicides. Businesses should understand this. For ease of manufacture, storage and transport, the compositions of the combinations according to the invention are generally produced in concentrated form so that they can be diluted with water to the extent necessary to give the stated application rates. Such concentrated compositions preferably contain between 0-3 and 0% by weight of the active ingredient in combination with an inert, non-phytotoxic carrier. Contains r-90 weight*chi. The compositions are usually in the form of easily wettable powders, easily dispersed granules or concentrated suspensions.

Concentrated compositions are intended to be diluted with water or other suitable substances in a conventional spray tank before their use, or to be subjected to air-mixing application; It should be understood that compositions of the present invention wherein the inert non-phytotoxin carrier is water or other suitable material.

Wettable powders consist of an intimate mixture of the active ingredient, an inert carrier and a suitable surfactant. Inert carriers may be chosen, for example, from alumina, atanoyargite clay, montmorillonite clay, diatomaceous earth, precipitated silica, kaolin, mica, talc and purified silicates; effective surfactants are sulfones. lignin, naphthalene sulfonate and concentrated naphthalene sulfonate, succinic acid alkyl esters, alylbenzene sulfone), sulfuric acid alkyl esters and nonionic surfactants such as ethylene oxide adducts derived from alkyls or aryls, such as ethylene oxide adducts of phenols. can be selected from. Examples of the easily wettable powder compositions are shown in the table below: Wettable powder composition weight ratio Compound of formula (■) 0. /~Here.

I O U
lIO~ 90 Surfactant 9, 10 Anti-caking agent θ~/3 Total amount with addition of inert carrier 100 Concentrate for suspension preparation contains active ingredients, surfactant,
It consists of a suspending agent and a suspension in water or a non-aqueous medium. An example of this suspension concentrate consists of active ingredients and e.g. surfactants, clouding agents, antifoaming agents, antifreeze agents and water,
For example, the following table shows: Compounds with weight coefficient formula ■ θ, / ~ ko, left io
Ullo,
g.

Suspending agent 0./~10 Surfactant /~S Antifoaming agent 0. / ~ /
・An example of a granule that can be dispersed by adding 0 antifreeze agent & -: 10 water to a total amount of 100 has the following composition: Weight % of dispersible granule Compound of formula (i) o, i to co, 3 I O
C ION g0
Surfactant 9- /, anti-caking agent
0,10 Binder O~70 Disintegration inhibitor θ~10 Add inert carrier and total amount io.

The present invention also includes a process for preparing a suitably wettable powder composition containing sulfur and a pyrimidine compound of configuration I as active ingredients, which process comprises admixing the active ingredient with an excipient; The mixture is pulverized to a predetermined particle size,
This includes making the particle size reach an average value of /~-0 Miku4.

Pyrimidine compound of formula ■ (wherein X is chlorine)
is known under the name Fenarimol and is available from the ELS Li1ly Company, for example Block, Rimidine and Rubigan (B16e*).
Compounds of formula (1) (wherein
It is commercially available as Trlmlnol).

The following examples are illustrative of the invention: Example / The following wettable powder was prepared:
I O U
gO alkylnaphthalene sulfonate 3 sulfonated kraft sulfonate 3 (
Sulfonated craft 5ulphon
ate) Silicon Geo Medium Side
The active ingredients and the specified excipients were mixed in a conventional mixing apparatus. The mixture is pulverized in a pulverizer using a fluid energy source to achieve an average particle size range! Finally, the mixture was remixed to a submicron to 10 micron size, degassed, and packaged.

Example The following suspension concentrate was prepared: Weight % 7-Narimol or Hanuarimol O,!
r i o u
gθ? Realyl ethoxylated phosphate ester 3 naphthalene formaldehyde condensate 3 ethylene glycol
S silicone emulsion
O9 left xanthan gum
0. Add water to make the whole volume.io
.

After mixing the various components (excluding the suspending agent) with a portion of the liquid phase forming components, the slurry was pulverized to a particle size of 1 micron or less to 10 microns. A glue consisting of the suspending agent and the remainder of the liquid phase components was prepared and mixed with the milled slurry described above to produce the product of the invention.

Example 3 The following dispersible granule composition was prepared: Fenarimol or Nuarimol /,3 by weight
I O U
gO praunic acid alkyl ester trisodium phenylsulfone) & alginic acid
Add S kaolin to total amount
100 ingredients were mixed and then pulverized using a fluid energy grinder to a particle size of less than 10 microns to 10 microns, and then granulated.

EXAMPLES The following examples illustrate the synergistic performance of the compositions of the present invention.

As a result of frequent use of Fuenarimol for several years, a strain of Sphaerotheca fulginea, which is less sensitive to Fuenarimol, has developed.

Subject this strain to the greenhouse test described below.

Cucumbers planted in individual pots were sprayed with the respective aqueous sulfur suspensions, fenarimolsus intion and sulfur fenarimol mixed suspension during their first leaf production stage.

When the upper leaf surface was completely dry at 1 hour after spraying, the leaves were inoculated with Sphaerotheca fulginea. After 10 days, the percent mold control was determined in comparison to control plants, ie, plants not treated with the fungicidal composition, with the following results:

The “Colby equation” is well known in the industry.
on)”(Weeds, /!r, 20-.22(/
? It is clear that the above results showed a synergistic effect in the test under the above conditions.

Claims (6)

[Claims] (1) A fungicidal composition comprising sulfur and a compound having the following formula: (where X is chlorine or fluorine). (2) the ratio of sulfur: compound of formula I is 10:/-A;
A composition according to claim 1 within the range of 0.002l. (3) The composition according to any of claims 1 and 7, which contains finely divided sulfur. (4) A method for treating fungal diseases of plants, which comprises applying the fungicidal composition according to any one of claims 1 to 3 to plants. (5) The method of treating grapes as set forth in claim d. (6) A method for producing a fungicidal composition according to claim 1, which comprises intimately mixing sulfur and the compound of formula (1).