SU668567A3 - Fungicide - Google Patents

Description

(54) FUNGICIDE MEANS

This invention relates to chemical plant protection products, specifically a fungal agent based on azole derivatives. The use of 3,3-dimethyl -1-phenoxy-1-triazalylbutan-2-one (ol as fungicides 1 is known. In addition, it is known that 1-diphenyloxy-1-imidazolyl (1,2,4-triazolyl) -3 The 3-dimethylbutan-2-one (oly) has fungicidal properties 2. However, the known compounds are not sufficiently active at liquid doses of consumption. The aim of the invention is to find new fungicidal agents based on azole derivatives with high fungicidal activity. This goal is achieved by using a means containing as-azole derivatives with Dinene of the general formula: where R is radikyosh imidazolyl or 1,2,4-tridzolyl; A is a keto group or CH (OH) -group, X is chlorine, phenyl, 4-chlorophenyl; n is 1.2, or its salt is 0 , 1 95 wt.% And an additive selected from the group of solid and liquid scrubbers. Usage means are common: solutions, emulsions, suspensions, powders, pastes, granules. They are prepared by conventional methods in the preparation of preparative pesticides. Compounds of the formula 1 obtained by the interaction of 1-bromo-2- (2,4-dichlorophenyl) -1-phenoxyethan-2-one derivatives with imidazole or 1, 2, 4-triazal in the presence of and a diluent or an acid binding agent and, if necessary, PS ", the resulting compounds are reduced by complex boron hydrides to produce azolols. Example 1, Experiment on treating growths with Veal powdery growth of cereals (protective effects) (mycosis, destroying leaves). To test the protective efficacy, single leaves of barley seedlings of Amsel variety are sprayed with the preparation of the active Substance before the formation of dew. After drying, the chopped plants are dusted with spores of Erysiphe graminis.Var.hordei. After 6 days of plant dwelling at a temperature of 21-22 ° C and air humidity of 80-90%, the extent of damage to the plants with sesame powdery mildew is determined. The degree of damage is expressed as a percentage of the untreated control lesions.

R

 and b &: tno) 7 plants, 0% means that there is no lesion, 100% means the same degree of damage as untreated control plants, active substances, them. concentrations in the spray solution and extent of damage are given in table 1, table 1

0.025

0.0

at

1-1 x nS1

N

X HC1

C1

-Cl

0.025

0.0

0.025

16.3

0.025

7.5

Cl

0.025

0.0

.c „-oHG

he

WITH

X HU1

-c-a

PRODSi; W 1 (IO T.CH; P1

in

:::: g :::: g ::

37.5

0.025

37.5

0.025 Example 2. Experience in the treatment of germs of rust-infected grain crops (protective action). To test the protective efficacy, single-leafed seedlings of wheat with Michigan Amber are inoculated with Paccinia recondita uredosporic suspension in 0.1% water agar. After the spore suspension is dried, wheat plants are sprayed with the preparation of the active substance before the formation of rus and they are placed for greenhouse (temperature iOc and 100% humidity of air).

Unprocessed

O-CH-CO-ClCRj)

I

(

 X hfil

 )

O-CH-C (CHj) j

i. he

ABOUT

I - and

I from ": gpcho)

sn-e (enz) he

100

0.025

33.8

0.025

50.0

0.025

58.8 After 10 days of stay of the plants at a temperature of 20 ° C and a humidity of 80-90%, the degree of damage to the plants with rusty spots is determined. The degree of damage is expressed as a percentage of damage to untreated control plants. 0% means that there is no damage, 100% means the same degree of damage as that of untreated control plants. The active substances, their concentrations in the spray solution, and the extent of the damage are listed in Table 2. table 2

 fUitrcmHO)

Cl

OH I

O-CH-CH-t (CHj) j

i "

V-y

(uslecmna-)

Cl

 AND

X HCl Cl

Example 3. Experience in the treatment of Blon infected Podosphaera (protective effect).

Young sons of blonce, which are at 4-6 stages of leaf development, are sprayed with a screen before dropping, D plants are placed in greenhouses for 1 day (temperature 2.0 s and relative moisture. 70% of air), then they are inoculated by pollinating -. by the conidia of the blon powdery mildew (Podosphaera ieucotri-

Continuation of table 2

-f

g

lEZZlH

0.025

33.8

0.025

12.5

io, o

0.025

H10,025

23.8

0.025

23.8

0.025

33.8

oha) and placed in a greenhouse (temperature 21-23 ° C and relative air humidity of about 70%).

10 days after inoculation, damage to the seedlings is determined. The obtained test data is recalculated for the percentage of damage. 0% means that there is no damage, 100% means that the plants are completely affected.

The active substances of the concentration and the results are shown in table 3.

Table

Active substances, their concentrations and results are shown in Table 4.

T l 6 l and II. but

A fungicidal agent containing azole derivatives as an active substance and an additive selected from a group of tverllis and liquid carriers, differing in that in order to enhance the fungicidal activity, it contains as an azop derivative compounds of the general formula

Cl

where R is the imidazolyl radical or 1,2,4-triazolyl,

A - ketogroup or CH (OH) -group, X - chlorine, phenyl, 4-chlorophenyl, n - 1,2,

or its salt in an amount of 0.1 to 95 wt.%.

Sources of information taken into account in the examination

1. Published for Germany 2324010 cl. C 07 D 249/08, 1975,

2. USSR author's certificate number 608456, cl. A 01 N 9/22, 1975.