IE19980064A1 - Synergistic herbicidal agents - Google Patents
Synergistic herbicidal agentsInfo
- Publication number
- IE19980064A1 IE19980064A1 IE1998/0064A IE980064A IE19980064A1 IE 19980064 A1 IE19980064 A1 IE 19980064A1 IE 1998/0064 A IE1998/0064 A IE 1998/0064A IE 980064 A IE980064 A IE 980064A IE 19980064 A1 IE19980064 A1 IE 19980064A1
- Authority
- IE
- Ireland
- Prior art keywords
- weight
- salts
- herbicides
- water
- active substance
- Prior art date
Links
- 239000004009 herbicide Substances 0.000 title description 28
- 230000002195 synergetic Effects 0.000 title description 4
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- 239000000126 substance Substances 0.000 description 54
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- 239000003086 colorant Substances 0.000 description 1
- 230000002860 competitive Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 125000004786 difluoromethoxy group Chemical group [H]C(F)(F)O* 0.000 description 1
- YRIUSKIDOIARQF-UHFFFAOYSA-N dodecyl benzenesulfonate Chemical compound CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 YRIUSKIDOIARQF-UHFFFAOYSA-N 0.000 description 1
- 229940071161 dodecylbenzenesulfonate Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000000855 fungicidal Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical group II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- RBNIGDFIUWJJEV-UHFFFAOYSA-N methyl 2-(N-benzoyl-3-chloro-4-fluoroanilino)propanoate Chemical group C=1C=C(F)C(Cl)=CC=1N(C(C)C(=O)OC)C(=O)C1=CC=CC=C1 RBNIGDFIUWJJEV-UHFFFAOYSA-N 0.000 description 1
- 125000004674 methylcarbonyl group Chemical group CC(=O)* 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 230000001338 necrotic Effects 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000003431 oxalo group Chemical group 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N p-acetaminophenol Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001522 polyglycol ester Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 230000002335 preservative Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 229910052904 quartz Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002829 reduced Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- VQOIVBPFDDLTSX-UHFFFAOYSA-M sodium;3-dodecylbenzenesulfonate Chemical class [Na+].CCCCCCCCCCCCC1=CC=CC(S([O-])(=O)=O)=C1 VQOIVBPFDDLTSX-UHFFFAOYSA-M 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Description
SYNERGISTIC HERBICIDAL COMPOSITIONS
This invention relates to herbicidal compositions comprising
A) a compound of the formula I or salts thereof
in combination with
B) one or more compounds selected from the group
comprising growth-regulator-type herbicides,
dicamba and salts thereof, diflufenican,
nitrodiphenyl ethers, sulfonylureas which
differ from the urea of the formula (I), and
salts thereof, and selective grass herbicides.
These compositions are particularly useful in the
selective control of weeds in rice, soya and other crops.
'.Description
Synergistic herbicidal compositions
The invention is in the field of the crop protection
agents which can be employed against monocotyledon and
dicotyledon weeds, in particular in the combination of
herbicides.
The action of an individual herbicide used in acceptable
application rates is frequently insufficient for con-
trolling the spectrum of monocotyledon and dicotyledon
weeds which exists in agricultural practise. To allow the
grower to control the weed spectrum in cereals, maize and
other crops with one or a few application(s) of her-
bicidal active substances, it is sometimes more suitable
to use combinations of a variety of active substances.
Combinations of herbicides have now been found whose
action, surprisingly, exceeds the extent which would have
been expected taking into account the individual action
of the The
according to the invention, therefore allow a surprising-
ly great reduction in application rate of each of the
components. combinations of herbicides,
components.
The invention therefore relates to herbicidal com-
positions which comprise
A) a compound of the formula I or salts thereof
3} T0 Pueuc mspecrgou’ . X
in combination with
B) one or more compounds selected from the group
comprising growth-regulator-type herbicides, dicamba
and salts thereof, diflufenican, nitrodiphenyl
ethers, sulfonylureas which differ from the urea of
the formula (I),
grass herbicides.
and salts thereof, and selective
The compound of the formula (I) is known as amidosulfuron
and disclosed in EP-A-0,131,258 (US-A-4,718,937).
Amidosulfuron is a herbicidal active substance from the
group comprising the sulfonylureas and is generally
and post-emergence in cereals, rice and
120 g of
controlling a broad spectrum of annual and perennial
applied pre-
maize at application rates of 5 -
broad-leaf weeds and Cyperaceae (g of a.i./ha = gram per
hectare based on active ingredient). For use, the active
substance is generally formulated as a WP (water-soluble
powder) or WDG (water-dispersible granules) and employed
in the customary manner in the form of a dilution with
water.
Particularly suitable growth-regulator-type herbicides
are the following:
i.e.
a) MCPB 4-(4-chloromethylphenoxy)-
butanoic acid or salts thereof (for
example the sodium salt);
b) mecoprop i.e. 2-(4-chloromethylphenoxy)-
propionic acid or salts thereof; in the
form of a racemic mixture or as the (R)-
isomer (mecoprop-P);
c) 2,4-D i.e. 2-(2,4-dichlorophenoxy)acetic acid
or salts thereof or esters thereof;
d) 2,4-DB i.e.
acid or salts thereof;
4-(2,4-dichlorophenoxy)butanoic
IE 980064
e) dichlorprop i.e. 2-(2,4-dichlorophenoxy)propionic
acid or salts thereof or esters thereof,
f) MCPA i.e. 2-(4-chloromethylphenoxy)acetic
acid or salts thereof.
The abovementioned compounds a) to f) represent standard
herbicides which are used post-emergence in a large
number of agriculturally used crops for controlling
needs and Cyperaceae. Application rates of 100
- 3000 g of a.i./ha as individual active substances cover
in each case a specific sector of the weed flora. The
various compounds are used in the forms of the salts
"The Pesticide Manual",
9th Edition 1991 and
and/or esters (references: cf.
British Crop Protection Council,
references cited therein).
Dicamba, i.e. 3,6-dichloromethoxybenzoic acid (or the
salts thereof and esters thereof), is also a widely used
herbicidal active substance which is applied analogously
to the growth-regulator herbicides. The active substance
is mainly used post-emergence (for example, inter alia,
in cereals and maize), likewise in the forms of the salts
thereof (cf. "The
Manual", already mentioned above).
and/or esters thereof Pesticide
Diflufenican, i.e. N—(2,4-difluorophenyl)[3-(tri-
fluoromethyl)phenoxy]pyridinecarboxamide, is employed
pre— and post-emergence for controlling weeds in cereals
and other crops at a rate of 50 - 500 g of a.i./ha. It is
marketed. mostly in the fornl of finished formulations
together with other herbicidal active substances (of.
"The Pesticide Manual", already mentioned above).
Particularly suitable nitrodiphenyl ethers are the
following:
a) bifenox, i.e. methyl 5-(2,4-dichlorophenoxy)-
1000 g of
a.i./ha when used as single active substance pre-
2-nitrobenzoate; application rate 50 —
IE 980064
and post-emergence, for example in cereals, rice and
maize.
fluorglycofen, i.e. carboxymethyl 5-[2-chloro-
4-(trifluoromethyl)phenoxy]nitrobenzoate;
application as single active substance for example
only 5 — 50 g of a.i./ha pre- and post-emergence in
cereals and soya.
i.e.
acifluorfen, 5-[2-chloro(trifluoromethyl)-
phenoxy]nitrobenzoic acid or salts thereof;
application as single active substance for example
at a rate of 100 - 500 g of a.i./ha pre- and post-
emergence in soya and cereals.
-[2-chloro(trifluoromethyl)-
oxyfluorfen, i.e.
phenoxy]ethoxynitrobenzene; application as
single active substance for example at a rate of 100
- 1000 g of a.i./ha pre- and post-emergence in soya
or on areas not under cultivation.
lactofen, i.e. 1-(ethoxycarbonyl)ethyl 5-[2-chloro-
4-(trifluoromethyl)phenoxy]nitrobenzoate;
application as single active substance for example
at a rate of 50 — 500 g of a.i./ha pre- and post-
emergence in soya and cereals.
fomesafen, i.e. N—methylsu1fonyl[2-chloro~4-
(trifluoromethyl)phenoxy]nitrobenzamide;
application as single active substance for example
at a rate of 50 - 1000 g of a.i./ha pre- and post-
emergence in soya or cereals.
All of the nitrophenyl ethers mentioned are described in
"The Pesticide Manual“
(already mentioned above).
Particularly suitable sulfonylureas are the following:
IE 980064
_ 5 _
sulfonylureas which are employed mainly in cereals,
in some cases in potatoes and in grassland for post-
emergence control of broad-leaf and grass weeds (for
example at a rate of 5 - 80 g of a.i./ha), for
example
aa) triasulfuron, i.e. 1-[2-(2-ch1oroethoxy)-
phenylsulfonyl](4-methoxymethyl-
1,3,5-triazinyl)-urea;
ab) chlorsu1furon,i.e.1-(2-chlorophenylsulfonyl)-
3-(4-methoxy-6¥methyl-1,3,5—triazinyl)-urea;
1—[2-
(carboxy— or methoxycarbonyl)pheny1su1fonyl]-
ac) tribenuron or tribenuron—methy1, i.e.
3-methyl(4-methoxy-6—methyl-1,3,5-triazin-
2-yl)-urea;
ad) thifensulfuron or thifensulfuron-methyl, i.e.
1-[2-(carboxy— or methoxycarbonyl)-thiophen-3~
yl-sulfony1](4-methoxymethyl-l,3,5-
triazinyl)-urea and
sulfonylureas which are employed mainly in maize and
perennial crops for post-emergence control of grass
and broad—leaf weeds (5 - 80 g of a.i./ha), for
example
be) nicosulfuron, i.e. 1-[3-(dimethylamino-
carbonyl)-pyridinyl-sulfonyl](4,6-
dimethoxypyrimidinyl)—urea;
bb) primisulfuron or primisulfuron-methyl, i.e.
1-[2-(carboxy- or methylcarbonyl)-phenyl-
sulfonyl]—3-[4,6—bis(dif1uoromethoxy)-
pyrimidinyl]-urea;
bc) DPX-E 9636, i.e. 1-[3-(ethylsulfonyl)-pyridin-
2-yl-sulfonyl](4,6-dimethoxypyrimidyl)-
urea;
bd) pyridylsulfonylureas as they are described in
PCT Patent PCT/EP 90/02308
(WO 91/10660), those of the
formula A1 or salts thereof
Application
preferably
IE 980064
O~‘ R’
__: Pl 0 3'‘ N=-<
R ’*5;'-hH‘LLF—<\ 2 (A1)
0 R_(
in which
E is CH or N, preferably CH,
R‘ is iodine or NR°R1°,
R5 is H, halogen, cyano, C,-C3-alkyl, C1-C3—alkoxy,
C1-C3-haloalkyl, C1-C3—ha1oa1koxy,
C1-C3-alkylthio, (C1-C3-alkoxy ) -C1-C3-alkyl ,
(C1-C3-alkoxy) -carbonyl, mono- or di-(C1-C3-
alkyl ) -amino, C1-C3-alkyl-sulfinyl or -sulfonyl,
S02-NR‘R" or C0-NR'Rb, in particular 3,
R“ and R”, independently of one another are H,
C1-C3-alkyl, C1-C3-alkenyl, C1-C3-alkynyl, or
together are -(CI-12).: , - ( CH2 ) 5- or
’(CH2)2'O"(CH2)2‘r
is H or CH3,
is halogen, C1-C2-alkyl, C1-C2-alkoxy, C1-C2-
haloalkyl, preferably CF3, C1-C2-haloalkoxy,
preferably OCHFZ or OCHZCF3,
is C1-C2-alkyl, C1-C2-haloalkoxy, preferably
OCHF2 or C1-C2-alkoxy, and
is C1-C,-alkyl and R1° is C1-C,-alkylsulfonyl, or
R9 and R" together are a chain of the formula
-(CH2)3SO2- or -(CH2),,SO2-.
IE 980064
The herbicides mentioned above under aa) to ba) are
described in "The Pesticide Manual" (already mentioned
above).
Primisulfuron and primisulfuron-methyl are-known from
Brighton Crop Protection Conference - Weeds - 1987,
p. 41 - 48.
DPX-E 9636 is known from Brighton Crop Protection
Conference — Weeds — 1989, p. 33 et seq..
Suitable herbicides are mainly the following
herbicides for the selective post-emergence control of
grass
harmful plants (grass weeds and broad-leaf weeds) in
cereals (range of application rates 30 to 1000 g of
a.i./ha):
i.e. 2-[4—(2,4—
dichlorophenoxy)phenoxy]propionic acid or its methyl
a) diclofop or diclofop-methyl,
ester;
b) tralkoxydim, i.e. 2-[1-(ethoxyimino)—propyl]
hydroxymesitylcyclohexenone;
c) difenzoquat, i.e. 1,2-dimethy1-3,5-diphenyl-
pyrazolium salts;
d) imazamethabenz, i.e. a mixture of 6-(4-isopropyl
methyl—5—oxo—2—imidazolinyl)methyl-benzoic
acid and —4—methyl-benzoic acid or their methyl
esters;
e) flamprop or flamprop-methyl, i.e. N-benzoyl—N-(3-
chlorofluorophenyl)-alanine, or its methyl ester;
f) CGA-184927, i.e. propargyl (2R)[4-(5-chloro
fluoropyridinyloxy)-phenoxy]—propionate.
The last-mentioned compounds a) to e) are likewise des-
cribed in "The Pesticide Manual" (see above).
CGA-184927 is known from EP-A-191,736 and Brighton Crop
Protection Conference - Weeds - 1989.
IE 980064
that
(= synergistic) effects occurred when amidosulfuron was
Surprisingly, it has emerged superadditive
used together with one or more active substances from
group B. The action in the combinations was greater than
that of the single products used on their own.
effects allow the application rate to be reduced, a broad
These
spectrum of broad-leaf weeds and grass weeds to be
controlled, a more rapid action, a prolonged long-term
action, a complete control of the harmful plants with
only one, or few, applications, and a widening of the
potential application period when the active compounds
are combined. These properties are required for practical
weed control to keep agricultural crops free from un-
desired competitive plants and thus to guarantee the
quality and quantity of the yields and/or to increase
them. These novel combinations markedly outperform the
state of the art with regard to the properties described.
The choice of the ratio by weight and the application
rates are a function of, for example, the other component
in the mixture, the development stage of the broad-leaf
environmental
weeds or grass weeds, the weed spectrum,
factors and climatic conditions.
The ratios by weight A:E of the combined herbicides can
therefore vary within wide limits and are generally 1:200
to 20:1.
The following ratios by weight are preferably used:
In the case of combinations of the compounds of the
formula (I) or salts thereof
- with growth-regulator
herbicides: 1:200 to 2:1, preferably
1:50 to 1:1;
- with dicamba: 1:200 to 2:1, preferably
1:50 to 1:1;
IE 980064
_ 9 _
- with diflufenican: 1:200 to 5:1, preferably
1:50 to 2:1;
— with nitrodiphenyl
ethers: 1:200 to 10:1, preferably
1:50 to 5:1;
- with sulfonylureas: 1:16 to 20:1, preferably
1:10 to 20:1;
- with grass herbicides: 1:200 to 3:1, preferably
1:50 to 10:1.
The application rates of the herbicide A in the active
substance combinations are preferably between 5 and 100 g
of a.i./ha (a.i. = relative to active ingredient). The
application rates of B type compounds in the mixtures are
generally from 5 to 100 g of a.i./ha, preferably
— with growth-regulator
herbicides 50 to 1000 g of a.i./ha,
- with dicamba 50 to 1000 g of a.i./ha,
— with diflufenican 20 to 1000 g of a.i./ha,
- with nitrodiphenyl
ethers 10 to 1000 g of a.i./ha,
with sulfonylureas 5 to 80 g of a.i./ha,
with grass herbicides 30 to 1000 g of a.i./ha.
The active substance combinations according to the
invention can exist as ndxed formulations of the two
components which are then applied in the customary manner
in the form of a dilution with water, or are prepared in
the form of so—called tank mixes by concomitant dilution
of the separately formulated components with water.
The A type and B type compounds or their combinations can
be formulated in many ways, depending on the prevailing
biological and/or chemicophysical parameters. The follow-
ing are possible exemplary formulations: wettable powders
(WP)r
(SL)r
emulsifiable concentrates (EC), aqueous solutions
emulsions (EW) such as oil-in-water and
IE 980064
_ 10 _
water-in-oil emulsions, sprayable solutions or emulsions,
dispersions on an oil or water basis, suspoemulsions,
dusting powders (DP), seed-dressing agents, granules for
soil application or for broadcasting, or water-
dispersible granules (WG), ULV formulations, micro-
capsules or waxes.
The individual formulation types are known in principle
and are described, for example, in: Winnacker-Kfichler,
"Chemische Technologie [Chemical Technology]", Volume 7,
C. Hauser Verlag Munich, 4th Ed. 1986; van Valkenburg,
"Pesticides Formulations", Marcel Dekker N.Y., 1973;
K. Martens, "Spray Drying Handbook", 3rd Ed. 1979,
G. Goodwin Ltd. London.
The formulation auxiliaries required such as inert
materials, surfactants, solvents and other additives are
equally known and are described, for example, in:
Watkins,
Carriers",
"Handbook of Insecticide Dust Diluents and
2nd Ed., Caldwell N.J.;
H.v. Olphen, "Introduction to Clay Colloid Chemistry";
2nd Ed., J. Wiley & Sons, N.Y. Marsden, "Solvents Guide",
Darland Books,
2nd Ed., Interscience, N.Y. 1950; McCutcheon’s,
"Detergents and Emulsifiers Annual", MC Publ. Corp.,
Ridegewood N.J.; Sisley and Wood, "Encyclopedia of
Surface Active Agents", Chem. Publ. Co. Inc., N.Y. 1964;
Schdnfeldt, "Grenzflachenaktive Kthylenoxidaddukte
[Surface—active Ethylene Oxide Adducts]", Wiss. Verlags-
gesellschaft, Stuttgart 1976, Winnacker-Kfichler,
"Chemische Technologie [Chemical Technology]", Volume 7,
C. Hauser Verlag Munich, 4th Ed. 1986.
Based on these formulations, it is also possible to
prepare combinations with other pesticidally active
substances such as other herbicides, fungicides or
insecticides, as well as safeners, fertilizers and/or
growth regulators, for example in the form of a finished
formulation or a tank mix.
IE 980064
Wettable powders are preparations which can be dispersed
uniformly in water and which comprise, beside the active
substance, ionic or non-ionic surfactants (wetting
agents, dispersants), for example polyoxethylated a1kyl—
phenols, polyethoxylated fatty alcohols or fatty amines,
fatty alcohol polyglycol ether sulfates, alkanesulfonates
or alkylbenzenesulfonates, sodiuntligninsulfonate, sodium
2,2'-dinaphthylmethane—6,6'—disulfonate, sodium dibutyl-
oleoylmethyl—
taurinate, besides a diluent or inert substance.
naphthalenesulfonate or else sodium
Emulsifiable concentrates are prepared by dissolving the
active substance in an organic solvent, for example
butanol, cyclohexanone, dimethylformamide, xylene, or
else higher-boiling aromatics or hydrocarbons, with the
addition of one or more ionic or non-ionic surfactants
(emulsifiers). The following are examples of emulsifiers
which can be used: calcium alkylarylsulfonates such as
calcium:dodecylbenzenesulfonate, or non-ionic emulsifiers
alkylaryl poly-
glycol ethers, fatty alcohol polyglycol ethers, propylene
such as fatty acid polyglycol esters,
oxide/ethylene oxide condensation products, alkyl poly-
ethers, sorbitan fatty acid esters, polyoxyethylene
sorbitan fatty acid esters or polyoxethylene sorbitol
esters.
Dusting powders are obtained by grinding" the active
substance with finely divided solid substances, for
example talc, natural clays such as kaolin, bentonite and
pyrophyllite, or diatomaceous earth.
Granules can be prepared either by spraying the active
substance onto adsorptive, granulated inert material or
by applying active substance concentrates to the surface
of carrier substances such as sand, kaolinites or granu-
lated inert material with the aid of adhesives, for
example polyvinyl alcohol, sodium polyacrylate or else
mineral oils. Suitable active substances can also be
IE 980064
_ 12 -
granulated in the fashion customary for the preparation
of fertilizer granules, if desired in the form of a
mixture with fertilizers. Water-dispersible granules are
spray-drying,
fluidized-bed granulation, disk granulation, mixing with
generally prepared by methods such as
high~speed mixers and extrusion without solid inert
material.
As a rule, the agrochemical preparations comprise 0.1 to
99 % by weight, in particular 2 to 95 % by weight, of
active substances of types A + B. The concentrations of
differ in the
the active substances A + B can
formulations.
For example, the active substance concentration in
wettable powders is approximately 10 to 95 % by weight,
the remainder to 100 % by weight is composed of customary
formulation components. In the case of emulsifiable
concentrates, the active substance concentration can be
approximately 1 to 85 % by weight, preferably 5 to 80 %
by weight. Formulations in the form of dusts comprise
approximately 1 to 25 % by weight, usually 5 to 20 % by
weight, of active substance, sprayable solutions ap-
proximately 0.2 to 25 % by weight, preferably 2 to 20 %
by weight, of active substance. In the case of granules
such as dispersible granules, the active substance
content depends partly on whether the active compound is
liquid or solid and on which granulation auxiliaries and
fillers are used. The content in the case of the water-
dispersible granules is generally between 10 and 90 % by
weight.
Besides, the active substance formulations mentioned
optionally comprise the adhesives, wetting agents,
dispersants, emulsifiers, penetrants, preservatives,
antifreeze agents and solvents, fillers, colorants and
carriers, defoamers, evaporation inhibitors, pH regu-
lators and viscosity regulators which are customary in
IE 980064
-13..
each case.
For use, the formulations which exist in commercially
available form are optionally diluted in the customary
manner, for example using water in the case of wettable
powders, emulsifiable concentrates, dispersions and
water-dispersible granules. Preparations in the form of
dusts, granules for soil application or for broadcasting
solutions are customarily not
as well as
diluted further with other
application.
sprayable
inert substances before
The active substances can be applied to the plants, parts
of the plants,
cultivation.
The active substances are preferably applied jointly in
seeds of the plants or the area under
the form of tank mixes, the optimally formulated con-
centrated formulations of the single active substances
being mixed concomitantly with water in the tank, and the
spray mixture obtained is applied.
The examples which follow are intended to illustrate the
invention:
A. Formulation examples
a) A dusting agent is obtained by mixing 10 parts by
weight of an active substance combination according
to the invention and 90 parts by weight of talc as
inert substance and comminuting the mixture in a
hammer mill.
b) A wettable powder which is readily dispersible in
water is obtained by mixing 25 parts by weight of
active substances A + B, 64 parts by weight of
kaolinvcontaining quartz as inert substance,
parts by weight of potassium ligninsulfonate and
1 part by weight of sodium oleoylmethyltaurate as
wetting and dispersing agent, and grinding the
mixture in a pinned disk mill.
K)‘.
IE 980064
_ 14 -
A dispersion concentrate which is readily disper-
sible in water is obtained by mixing 20 parts by
weight of active substances A + B with 6 parts by
weight of alkylphenol polyglycol ether (“Triton
X 207), 3 parts by weight of isotridecanol poly-
glycol ether (8 E0) and 71 parts by weight of
paraffinic mineral oil (boiling range, for example,
approx. 255 to 277°C), and grinding the mixture in
a ball mill to a fineness of below 5 microns.
An emulsifiable concentrate is obtained from
parts by weight of cyclohexanone as solvent and
parts by weight of oxethylated nonylphenol as
emulsifier.
Water-dispersible granules are obtained by mixing
75 parts by weight of active substances A + B,
parts by weight of calcium ligninsulfonate,
parts by weight of sodium lauryl sulfate,
3 parts by weight of polyvinyl alcohol and
7 parts by weight of kaolin,
grinding the mixture on a pinned. disk. mill and
granulating the powder in a fluidized bed by spray-
ing on water as granulation liquid.
Alternatively, water-dispersible granules are
obtained by homogenizing and precomminuting
parts by weight of active substances A + B,
parts by weight of sodium 2,2’-dinaphthy1methane—
6,6’-disulfonate,
2 parts by weight of sodium oleoylmethyltaurate,
1 part by weight of polyvinyl alcohol,
17 parts by weight of calcium carbonate and
50 parts by weight of water
on a colloid mill, subsequently grinding the mixture
on a bead mill, and atomizing and drying the result-
ing suspension in a spray tower by means of a
single-substance nozzle.
IE 980064
B. Biological examples
Various economically important broad-leaf weeds and grass
weeds had grown under natural field conditions (field
trials). The herbicide mixtures were applied in the 2- to
-leaf stage of the crop plants and the harmful plants by
means of plot spray equipment. The water application rate
was 300 - 400 liters of water per hectare.
Within 4 weeks after the application, the herbicidal
activity of the treated plots was assessed by comparison
with untreated control plots by visual scoring. The
herbicidal action as regards influencing the plant growth
and chlorotic and necrotic effects up to the total
destruction of the weeds was assessed qualitatively and
indicated as action
quantitatively and percentage
(0 - 100 2;).
The results are compiled in Tables 1 and 2 below:
IE 980064
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mwamuumsm xwfim u Dmmzm
maavnoamu mumnuouuum n «comm
o mm mm ma o~« + on _
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o cm on on can _
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o mm am w ow
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wmmfidv w HOH#fiOU w
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H manna
IE 980064
SOH§HH§mOUHEd u AH. Uzsomfioo
mummasb Edwuuom u m>mom
E3£HM Enwuomocmno " Amman
w:H=>Ho>:oo Encomaaom u ounom
mama: muwmmmum u dzmmm
m5NOHHOHHOH mfinunmnmfifl H Mmdzfl
o ooa mm oofi mm omm + on
o oofi mm oofl mm cad + om mm + m
o ooa wm co“ mm omq + on
e on mm mm om cam + on mm + fl
o om ma on me omm
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o mm an mm mp me
o no as he on cm .H. ucsomaoo n <
ommfidv w Hohunou m
m>mom émwmo ooqom «gm 5% 9: . ._. .m we m Tm V oocaumnsm w>Uo¢
N magma
IE 980064
The examples in the Tables show that only high dosage
rates of the single active substances allow good control
of individual weeds. The components in the ndxtures,
applied at low dosage rates, only show poor activity, far
less than required in practise. The concomitant use of
the active substances allow good effects to be achieved
on all test weed species. The additive action of the
individual components was markedly exceeded (synergism),
i.e. the control level required is achieved by markedly
These effects broaden the
lower application rates.
spectrum of action.
The crop tolerance, assessed in the form of damage, is
not adversely affected, i.e. the combinations can be
judged as fully selective.
IE 980064
Patent claims:
1. A herbicidal composition which comprises
A) a compound of the formula I or salts thereof
3', j..;/L“ ‘H
1-23c-so: \N so NH co H /,- \
‘ti _4‘\
/ 2 \_ /’
1-13c ‘ \
in combination with
B) one or more compounds selected from the group
comprising growth-regulator~type herbicides,
dicamba and salts thereof, diflufenican,
nitrodiphenyl ethers, sulfonylureas which
differ from the urea of the formula (I), and
salts thereof, and selective grass herbicides.
2. A composition as claimed in claim 1, wherein the
B type herbicides consist of grouth—regu1ator herbi-
cides selected from amongst the group comprising
MCPB, mecoprop, 2,4-D, 2,4-DB, dichlorprop and.MCPA,
nitrodiphenyl
diflufenican,
as well as dicamba,
ethers selected from group
acifluorfen, oxyfluorfen, lactofen and fomesafen, as
well as sulfonylureas selected from the
comprising triasulfuron, chlorsulfuron, tribenuron,
tribenuron-methyl, thifensulfuron, thifensulfuron-
methyl, nicosulfuron, Primisulfuron, primisu1—
comprising
group
",'1
IE 980064
furon-methyl, DPX-E 9639 and pyridylsulfonylureas,
as well as grass herbicides selected from the group
comprising diclofop, diclofop-methyl, tralkoxydim,
flamprop, flamprop-
difenzoquat, imazamethabenz,
methyl and CGA-184927.
A composition as claimed in claim 1 or 2, which
comprises the compound (I) or salts thereof and the
compounds selected from group B in a ratio by weight
of 1:200 to 20:1.
A composition as claimed in one of claims 1 to 3,
which comprises, besides the active substances of
type A or B, customary formulation auxiliaries.
A process for the preparation of a composition as
claimed in one or more of claims 1 to 4, which
comprises formulating the compound of the
formula (I) or salts thereof with one or more B type
compounds analogously to a customary crop protection
agent formulation selected from the group comprising
wettable powders, emulsifiable concentrates, aqueous
(tank
mix), dispersions on an oil or water basis, suspo-
solutions, emulsions, sprayable solutions
emulsions, dusting powders, seed-dressing agents,
granules for soil application or for broadcasting,
formulations,
water—dispersible granules, ULV
microcapsules and waxes.
which
comprises applying a herbicidally effective amount
A. method of controlling undesired plants,
of a combination of active substances A. + B as
defined in one or more of claims 1 to 4, to these
plants or to the area under cultivation.
The method as claimed in claim 6, wherein the
rates of the
formula (I) or salts thereof are from 5 to 100 g/ha
application compounds of the
IE 980064
and the application rates of the B type compounds
are from 5 to 1000 g/ha.
8. The method as claimed in claim 6 or 7, wherein the
active substances of types A and B are applied in a
ratio by weight of 1:200 to 20:1.
9. The use of a composition as defined in one or more
of claims 1 to 4 for controlling undesired plant
growth.
wherein harmful
plants in crops of useful plants are controlled
. The use as claimed in claim 9,
selectively.
A herbicidal composition according to claim 1, substantially as
hereinbefore described and exemplified.
A process for the preparation of a composition according to
claim 1, substantially as hereinbefore described and ex-
emplified.
A composition according to claim 1, whenever prepared by a
process claimed in claim 5 or 12.
A method according to claim 6, substantially as hereinbefore
described and exemplified.
Use according to claim 9, substantially as hereinbefore
described.
F. R. KELLY & CO.,
AGENTS FOR THE APPLICANTS.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEGERMANY12/07/1991P4123111.2 | |||
DE4123111 | 1991-07-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
IE980064A1 IE980064A1 (en) | 2000-02-23 |
IE19980064A1 true IE19980064A1 (en) | 2003-03-05 |
IE83260B1 IE83260B1 (en) | 2004-01-28 |
Family
ID=
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