DE1802375A1 - Fungicidal mixtures - Google Patents

Description

Dr. F. Zumstein - Dr. E. Assmann Dr. R. Koenigsberger Case 4/181 Dipl. Phys. R. Holzbauer Dr ₀ Ho / ne Paientanwälte Munich 2, Bräuhaussfrafee 4/1

BOEHRIIiGER SON ₉ INGELHEIM AM RHEIIT

Fungicidal mixtures

It is known that organotin complexes with pentacoordinigten Tin has fungicidal effects «Purely the fight against phytopathogenic These compounds are often unsuitable for fungi, as they are particularly suitable for more sensitive plants have a strong phytotoxic effect. Let it continue to be known that Metal salts of alkylenebisdithiocarbamic acids have a fungicidal effect and are only slightly phytotoxic.

As has now been found, is it surprisingly possible the phytotoxicity of tin complex compounds of the general formula

SnII ^ J ⁿ - J ^ Kmt ^ J + (I) 009845/1882

duroh Zusats τοη Alkylenbisdithioearbamaten of the general formula

B-OH-HH-CSS ^

\ (ID

CH ₂ -HH-OSS ^

improve significantly au. In addition, calibrates the fungicidal effect a synergistic effect.

In formula I means X chlorine _f bromine or bhodanide,

[did] * a substituted? Ammonium, phosphonium or Sulfonium cation,

η 0 or 1 and L chlorine * Broa or Bhodanid »falla η equal 1 iat »and a ligand with a Blektreaendonatorgruppe of the type

= P - 0 or ^ TS »0, case η is equal to 0.

In the compounds of the formula II, R denotes a hydrogen or a methyl group and He denotes zinc or manganese Iron or mixtures thereof

Compounds of Porael I, in which η equals 1 and QtatJ ^{+ stands} for • in Phoephoniumkation (in particular compounds according to DAS 1 227 905), are particularly suitable as misalignment components. eowie al · compounds of the for «■ el II zinc ethyl * nbiSkhioeerba« at (Zineb), Maneb and Mangan-Zinkäthylenbiajthioearbaaat (Manooieb.) · Proven has eieh Tor all · «« in ·

6 OfRiQtNAL

009845/1882

«= 3 -

Mixture of triphenyl decyl phosphonium [triphenyl bromochlorostannate] (decafentine) and manganese ethylene bisdithiocarbamate (Maneb) _{or similar}

The compounds of formulas I and II are known, "eg, B ₀ from the German AusiegeSchriften 1,215,709, 1216 30O ₉ 1,219,028, 1,219,029, 1,222,950 and 1 22? 905, furthermore from the USA patent specification 3 311 648 and the Belgian patent specification 686 314o

The proportions of the compounds I and II in the mixtures according to the invention are from about 5: 1 to about 1 s

For the application d. a active ingredient combination according to the invention. nations in the usual way with the usual help and Carrier materials processed as application forms are suitable for example suspension powder, granules, scattering powder »Such agents can be composed as follows;

Su spension powder

Composition:

50 io active ingredient mixture according to the invention 40 i » kaolin

9 i> LigninsuIfonat (dispersant) 1 # Natriumtetrapropylenbenzolsulfonat (wetting agent)

The ingredients are ground and the mixture for the Use in the ... desired amount of WaeBer suspended.

00Θ845 / 1882

Composition?

2 % active ingredient according to the invention 97 i ° TalkiäJED

1 $> methyl cellulose

The components are ground homogeneously to produce the dusting agent ₀

The lower toxicity of the mixtures according to the invention compared to the pure tin compounds can be seen from the following ... where 1 = no damage ₉ 9 = plant meant destroyed

Table 1

The dose is expressed in ppm of the tin compound, Maneb is additionally given tomatoes, moist arrangement,

W wivicsTÖff in
the Iv-rmulation Maneb Applied dose in ppm
the tin compound
1000 500 250 125 63 Deca-
fentiii 0 7 6 5 5 3 50 10
20th 2 2 2 2 2
3 2 2 2 2 50
50

009845/1882

When the tomatoes were placed in a dry place, from 1000 ppm of the agent does not cause any plant damage.

Table 2

Partial replacement of decafentine with manebo tomatoes, damp installation.

1> active ingredient in
the formulation
Decafentin Maneb O dose
1520 in ppm
1015 of the preparation
67 pounds 450 5.0 300 200 50 10
20th
30th 6.5 6.0 5.4 2.0
2.0
2.0 5.0 4.2 40
40
40 • 3 _s 0
2.0
2.0 3.0
2.0
2 ₉ 0 2.0
2.0
2.0 2.0
2.0
2.0 2.0
2.0
2.0

According to Table 2 is already by replacing 20 "fo the Decafentins in the mixture by the same amount maneb a significant improvement in the compatibility achieved, which may werdenβ by increasing the Manebgehalts further improved

The influence on the fungicidal action of adding compounds of the formula II to the compounds of the formula I was tested on tomatoes which were infected with Phytophthora infestans »EDq means _0; 10 $> infestation, compared to the control, or ο 90 % effect no

009845/1882

Table 3

% of the active ingredients
in the formulation Maneb EDqQ values j, ppm based on
Total active ingredient Decafentine 0 based on
Tin compound__ 80 50 10
20th 80 38
15th 50
50 32
11th

If decafentine is partially replaced by maneb, the values listed in Table 4 result from ₀

Table 4

% of the active ingredients
in the formulation Maneb ED _go ~ works,
ppm preparation Decafentine 0 160 50 10
20th
30th 106
17th
29 40
Z ⁴⁰
-40

From Table 4 it can be seen that a strong synergistic effect can be achieved with the mixture of decafentine (the fungicidal effect of maneb against Phytophtora infestans on tomatoes is less than that of decafentine ₀ )

009845/1882

Claims (1)

»Ti l'lltllllll ρ Hf Il ffl - 7 claims Fungicidal agents, characterized in that they contain a tin compound of the general formula -J U 4 η in the X chlorine, bromine or rhodanide, [K & tJ a substituted ammonium, phosphonium or sulfonium cation, η denotes 0 or 1 and L denotes chlorine, bromine or rhodanide, if η is 1, and denotes an Mgand with an electron donor group of the type ~ N-> 0, ^ P-ü or ^ rS = O, if η is the same 0 is as well as a content of an Alkylenbisdithiocarbamat uei general formula R-CH-NH-CSS ^ Ie (II) CH ₂ - NH - CSS in which R is a hydrogen atom or a methyl group and Me means zinc, manganese or iron ^, with the ratio of compounds 1 and II is 5: 1 to 1: 1. 009845/1882 2ο means according to claim 1, characterized in that in the compound I Kat for a phosphonium cation and in the compound II E. stands for a hydrogen atom o 3ο agent according to claim I _9, characterized in that it contains triphenyl decylphosphonium [triphenyl bromochlorostannate] as a compound of formula I and manganese ethylene bisdithiocarbamate as a compound of formula II 009845/1882