CS198292B2 - Fungicide - Google Patents

Abstract

The fungicidal composition consists of a mixture of a triazole or pyrimidine compound with a benzimidazole compound or an aluminium salt of ethyl phosphite, optionally mixed with carriers, diluents or excipients. The compounds are suitable for the curative or preventive fungicidal treatment of vine downy mildew or cereal powdery mildew.

Description

The invention relates to a fungicidal composition.

The fungicidal composition according to the invention is characterized in that it contains, as one fungicidally active ingredient, a triazine compound of the formula I

CH-O-CO-C (CH3) ₃

(I) and, as the second fungicidally active ingredient, the aluminum salt of formula II

H

C _{21 14} -O-o

Al ⁴ in combination with at least one inert, non-phytotoxic carrier, wherein the active ingredients I and II comprise 0.5 to 90% by weight of the fungicidal composition and are present in a weight ratio of 1: 5 to 1: 100.

The above compounds are known and can be prepared by methods well known in the literature. The combinations of active ingredients defined in the above formulation are novel and have been found to be surprisingly effective in controlling or combating fungal infections of cultivated plants, the combination of the compounds of formula I and II being particularly useful in controlling fungal fungal infections.

The composition according to the invention is preferably applied to the leaves in the post-harvest period up to harvest, the amount and frequency of application being determined by the severity or expected severity

982 92 fungal diseases. A characteristic feature of the invention and the particular advantage resulting from the use of the above combinations is the reduced frequency of treatment. To achieve the desired effect, for example, only one treatment is applied every two to three weeks to suppress fungal fungal infections, thereby achieving a significant reduction in labor costs.

The components of the composition of the invention may be applied to the plant to be treated sequentially or concurrently, with the last method giving the pre-rotation. The compound of formula I is preferably applied in an amount of 10 to 500 g per hectare, while the compound of formula II is applied. preferably in amounts of from 100 to 3000 g per hectare. Thus, the ratio of the compounds of formula I to the compounds of formula II in the ppode combinations in the ss may range from 1: 5 to 1: 300, by weight.

The preferred ratio of the compound of formula I to the compound of formula It is between 1: 5 · 1: 100 · 20 °

200 g of compound used per hectare and 1000-5000 used. Of the formula II per hectare.

The compound of formula (II), the ethyl salt of ethylene (III), is preferably used in combination with another fungicide, for example mancobez or, optionally, with a film, 2- (methoxaline), (i) SmdoM (II), f.^phyto ^ armaaie^£,^/1977 ^^J.^pIn FIG With other fungicide, the ratio of AEP to said fungicide is in the range of 3: 1 to 1: 2.

In order to facilitate production, storage and transport, the combination of the compounds of formula I and the compounds of formula II is usually produced in the form of a concentrate to be diluted with water to the desired level. Such concentrated compositions may contain from 0.5 to 90%, preferably from 5 to 90%, of ammonia active ingredients supplemented with one or more inert, non-phytotoxic substances. Such compositions will generally be in the form of a heavy powder, dust or aqueous suspension, although aqueous AEP suspensions tend to be unstable due to the relatively short half-life (100 days) of AEP in aqueous compositions. The cooenates are intended for appropriate dilution with water before use. Aqueous dispersions can be prepared in conventional spray tanks suitable for this purpose.

The powdered powders or dusts contain a perfect mixture of the active ingredients, one or more inert carriers and a suitable surfactant. The inert carrier can be selected from ultra-trigger clays, mono-alumina clays, fusible clays, kaolins, mica, talc and silicate cleaning. Active surfactants can be found between sulfone lignins, naphthalene sulfonates and condensed naphthalene derivatives, dlcylphenol surfactants, and ililignant surfactants, for example phenol ethylene oxide adducts. For the sake of clarity, the following powders are included within the scope of the invention, having the following composition:

Smbáíieent pills

Of amoleilites

compound of formula AND 0.25 to 10 compound of formula II 10.00 to 80 smáčno / a / 0.00 to 10 dispersing agent 0.00 to 10 lroti8ltkdat čiiid lo 0.00 to 10

inert (ш ^ / г) to 100

Aqueous suspensions and solutions contain the active ingredients suspended or dissolved in water or in a suitable solvent together with the desired surfactants, binders, antifreeze agents or preservatives. Suitable surfactants may be selected from those mentioned above in connection with the powder. They are usually thickened, usually selected from suitable cells and natural gums, while glycols are generally used as antifreeze agents. The finishing agents can be selected from a wide variety of bayals, for example, from paraben, phenol, n-calo-calcium, phenylate-nitrate and nitrile deadydes. Typical examples of aqueous suspensions falling within the scope of the invention are:

Aqueous suspension (liquid) X% by weight

the compound of formula I 0.1 to 8.0 the compound of formula II 20.0 to 52.0 emáčedlo / a / 0.0 to 15.0 burying agent 0.0 to 3.0 anti-freeze 0.0 to 20.0 preservative 0.0 to 1.0 anti-foaming agent 0.0 to 0.5 water to 100.0

While the foregoing general examples are sufficient to illustrate the types of concentrated formulations used in the present invention, the following non-limiting examples serve to further illustrate the composition of the invention.

The name CTDB in these examples denotes the triazine compound of formula I, while the compound of formula II is designated AEP.

Examples

The following wettable powders were prepared:

% by weight

CTDB 0.5 AEP 37.5 sodium alkyl ether sulfonate 5.0 powdered sulphate lye 3.0 silicon dioxide 4.0 talc do 100.0

% by weight

CTDB 2,0 AEP 40.0 mancozeb 20.0 ethoxylated nonylphenol 2,0 sodium dioctylsulfosuccinate 2,0 sodium lignosulfonate 3.0 hydrated sodium silicoaluminate 7.5 talc do 100.0

The active ingredients in each example were carefully mixed with specific excipients in a conventional mixer. The mixture was then further milled in a fluid mill to a particle size of the order of 1 to 10 .mu.m and finally mixed again and vented before packing.

Claims (1)

A fungicidal composition comprising, as one fungicidally active ingredient, a triazine compound of formula (I) -CH-CO-С (СНэ) з (I) and, as a second fungicidally active ingredient, an aluminum salt of formula (II) Al Э (II) in combination with at least one inert non-phytotoxic carrier, wherein the active substances I and II are 0.5. up to 90% of the fibrous fungicidal composition and are present in a molar ratio of 1: 5 to 1: 100.