DE2412270A1 - HERBICIDE - Google Patents

Description

BASF Aktiengesellschaft

Our reference: O.Z.30 451 Sws / Wil 6700 Ludwigshafen, March 12, 1974

herbicide

The present invention relates to a herbicide based on 1-phenyl-4-amino-5-chloro- (or -5-bromo) -pyridazon- (6) in the form of an aqueous suspension.

It is known to use pyridazones, especially l-phenyl-4-amino-5 ~ chlorpyridazon- (6), to be used to combat unwanted vegetation. The active ingredient is mostly in the form of a Spray mixture applied, which is sprayed on the plants and made of dry, finely divided wettable powder by suspension in Water is produced. This application form has the disadvantage that the herbicidal effect, especially in dry climates, occurs slowly and is often unsatisfactory. These disadvantages are partly caused by poor quality of the spray liquid, uneven, partly coarse spray powder particles, uneven distribution of the herbicide on plants and soil as well as poor penetration of the active ingredient through the leaf surface of the undesired plants, which with persistent Change drought. These disadvantages are particularly evident when combating important weeds, e.g. B. Alopecurus spp., Anagallis arvensis, Anthemis spp., Amaranthus spp., Avena spp., Capsella bursa pastoris, Centaurea cyanus, Chenopodium .spp., Digitaria sanguinalis, Echinochloa crus-galli, Euphorbia spp., Fumaria spp., Galeopsis spp., Galium aparine, Galinsoga parviflora, Lamium spp., Matricaria spp., Mercurialis annua, Polygonum spp., Raphanus raphanistrum, Senecio vulgaris, Setaria spp., Sinapis arvensis, Sonchus spp., Stellaria media, Thlaspi arvense, Veronica spp., Vicla spp.

It has been found that these disadvantages do not occur when a herbicide based on 1-phenyl-4-amino-5-chloropyridazone- (6) or 1-phenyl-4-amino-5-bromopyridazone- (6) is used , the active ingredient in the form of an aqueous suspension with an active ingredient content of 10 to βθ percent by weight

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is present. It is a highly concentrated aqueous suspension that is diluted before use is diluted with water to the application concentration. In addition to the better effect, those according to the invention stand out Herbicides have the following additional advantages: They can be easily diluted with other pesticides Mix.

No dust nuisance occurs in the production of ready-to-use spray liquors.

To further improve the herbicidal action, the herbicides can additionally contain water-emulsifiable adhesives or wetting agents oils or other herbicidal agents are added. This additive can either be added to the herbicides themselves or to those made from them aqueous spray liquors.

The aqueous suspension according to the invention can be diluted with water in any desired ratio. The concentration of the active ingredient in the finished spray mixture is, for example, 0.1 to 10% by weight ,

# Less than 5/20 wt U # is smaller than 10 / U 40 wt #, less than 20 wt ax 70: The particle size distribution of the active ingredient in the known spray powder provides, for example, as follows.... The particle size of the active ingredient in the suspension according to the invention is, for example: less than 2 / U at least 80% by weight.

The application rate of the active ingredient for a single application is, for example, 0.1 to 15 kg of active ingredient per hectare, preferably 0.2 to 6 kg per ha. The spray liquor application rate is, for example, 10 to 2000 liters per ha.

The protective colloid content of the suspension according to the invention is, for example, from 0 to 10 % by weight , preferably from 4 to 5 % by weight. The antifreeze content is, for example, 0 to 10% by weight, preferably 5 to 9% by weight.

The herbicides according to the invention with active ingredient contents between 10 to 60 wt. # Are produced by fine grinding of the suspended active ingredients in mills (e.g. sand or pearl

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mills) with the addition of surface-active substances and, if necessary of protective colloids and antifreeze agents. The latter serve to reduce the freezing point of the water in the herbicide Sufficiently lower storage in areas with low temperatures.

Protective colloids include: in question: cellulose derivatives, Polyvinyl pyrrolidones, polyvinyl alcohols.

Antifreeze agents are e.g. B. ethylene glycol, glycerine, urea.

The herbicides are used in the form of suspensions or dispersions by spraying, atomizing or pouring. the Forms of application depend entirely on the intended use; In any case, they should have the finest possible distribution of the Ensure active ingredients according to the invention.

Aqueous application forms can be prepared from pastes by adding water. Active substances, network, Adhesives, dispersants or emulsifiers and water-based concentrates are produced for dilution with water are suitable.

The following surface-active substances should be mentioned: alkali, alkaline earth, Ammonium salts of lignosulphonic acid, naphthalenesulphonic acids, Phenolsulfonic acids, alkylarylsulfonates, alkyl sulfates. Alkyl sulfonates, Alkali and alkaline earth salts of dibutylnaphthalene sulfonic acid, lauryl ether sulfate, fatty alcohol sulfates, fatty acid Alkali and alkaline earth salts, salts of sulfated hexadecanols, Heptadecanols, octadecanols, salts of sulfated fatty alcohol glycol ethers, Condensation products of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensation products of naphthalene or naphthalene sulfonic acids with phenol and formaldehyde, polyoxyethylene octylphenol ether, ethoxylated. Isooctylphenol, - octylphenol, - nonylphenol, alkylphenol polyglycol ether, tributylphenyl polyglycol ether, alkylaryl polyether alcohols, Isotridecyl alcohol, fatty alcohol ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ether, ethoxylated Polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol

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esters, lignin, sulphite waste liquors and methyl cellulose.

The herbicides can include oils of various types, fungicides, nematocides, insecticides, bactericides, trace elements, fertilizers, antifoams (e.g. silicones), growth regulators, antidotes or other herbicidally active compounds, such as. B.

substituted anilines
substituted aryloxycarboxylic acids and their salts, esters and amides

substituted ethers

substituted arsonic acids and their salts, esters and amides substituted benzimidazoles
substituted benzisothiazoles
substituted benzthiadiazinone dioxides
substituted benzoxazines
substituted benzoxazinones
substituted benzothiadiazoles
substituted biurets
substituted quinolines
substituted carbamates
substituted aliphatic carboxylic acids and their salts,

Esters and amides
substituted aromatic carboxylic acids and their salts, esters and amides

substituted carbamoylalkyl thiol or dithiophosphate substituted quinazolines
substituted Cycloalkylamidocarbonthiolsäuren and their salts, esters and amides

substituted cycloalkylcarbonamidothiazoles substituted dicarboxylic acids and their salts, esters and amides substituted dihydrobenzofuranylsulfonates substituted disulfides
substituted dipyridylium salts
substituted dithiocarbamates
substituted dithiophosphoric acids and their salts, esters and amides

substituted ureas
substituted hexahydro-IH-carbothioates

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substituted hydantoins substituted hydrazides substituted hydrazonium salts substituted isooxazole pyrimidones substituted imidazoles substituted isothiazole pyrimidones substituted ketones substituted naphthoquinones substituted aliphatic nitriles substituted aromatic nitriles substituted oxadiazoles substituted oxadiazinones substituted oxadiazolidinediones substituted oxadiazinediones substituted phenols and their salts and esters substituted phosphonic acids and their salts, esters and Amides

substituted phosphonium chlorides substituted phosphonalkylglyzines substituted phosphites substituted phosphoric acids and their salts, esters and amides substituted piperidines substituted pyrazoles substituted pyrazole alkylcarboxylic acids and their salts, esters and amides

substituted pyrazolium salts substituted pyrazolium alkyl sulfates substituted pyridazines substituted pyridazones substituted pyridinecarboxylic acids and their salts, esters and Amides

substituted pyridines substituted pyridine carboxylates substituted pyridinones substituted pyrimidines substituted pyrimidones substituted pyrrolidinecarboxylic acids and their salts, esters

and amides
substituted pyrrolidines

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substituted pyrrolidones substituted arylsulfonic acids and their salts, esters and Amides

substituted styrenes substituted tetrahydro-oxadiazinediones substituted tetrahydro-oxadiazole-diones substituted tetrahydromethanoindenes substituted tetrahydro-diazole-thiones substituted tetrahydro-thiadiazine-thiones substituted tetrahydro-thiadiazole-diones substituted aromatic thiocarboxamides substituted thiocarboxylic acids and their salts, esters and Amides

substituted thiol carbamates substituted thioureas substituted thiophosphoric acids and their salts, esters and Amides

substituted triazines substituted triazoles substituted uracils Substituted uretidinediones, if necessary, only immediately before use (tank mix) can be added. The herbicidal compounds mentioned last can also be used before or after the herbicides according to the invention can be applied.

These agents can be admixed with the herbicides according to the invention in a weight ratio of 1:10 to 10: 1. That The same applies to oils, fungicides, nematocides, insecticides, bactericides, antidotes and growth regulators.

The herbicides according to the invention can be used in crops of dicotyledons, such as Chenopodiacea, e.g. B.

Beta spp.

Spinacia spp.

Cruciferae, e.g. B.

Brassica spp. Raphanus spp.

Sinapls spp Lepidiura spp

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Composistae, ζ. Β. Lactuca spp. Helianthus spp.

Malvaceae, ζ. B. Gossypium hirsutum

Leguminosae, e.g. B. Medicago spp. Trifolium spp. Pisum spp.

Solanaceae, e.g. B. Solanum spp. Nicotiania spp.

Linaceae, e.g. B. Linum spp.

Umbelliferae, e.g. B. Petroselinum spp. Daucus carota

Rosaceae, e.g. B. Pragaria

CuGurbitaceae, e.g. B. CuGumis spp.

Liliaceae, e.g. B. Allium spp.

Vitaceae, e.g. B. Vitis vinifera

Bromeliaceae e.g. B. Ananas sativus

and in cereal crops such as Avena spp. Triticum spp. Hordeum spp. Secale spp. Saccharum officinarum

can be applied. Carthamus spp. Scorzonera spp.

■ Phaseolus spp. Arachis spp. Glycine max

Capsicum annuum

Apium graveolens

Cucurbita spp.

Sorghum
Zea mays

Panicum miliaceum Oryza spp.

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The herbicides according to the invention are used to combat undesired Vegetation.

Weeds or unwanted vegetation are to be understood as meaning all monocotyledonous and dicotyledonous plants that are in places grow up where they are not wanted.

For example, with the herbicides according to the invention, Gramineae, such as

Cynodon spp.

Digitaria spp.

Echinochloa spp.

Setaria spp.

Panicum spp.

Alopecurus spp.

Lolium spp.

Sorghum spp.

Agropyron spp.

Phalaris spp.

Apera spp.

and other

Cyperaceae such as Carex spp. Cyperus spp. and other

dlkotyle weeds, such as Malvaceae, ζ. Β.

Abutilon theoprasti Sida spp.

and other

Compostiae such as Ambrosia spp. Lactuca spp. Senecio spp. Sonchus spp. Xanthium spp. Iva spp.
Galinsoga spp, Dactylis spp. Avena spp. Bromus spp. Uniola spp. Poa spp.
Leptochloa spp. Brachiaria spp. Eleusine spp. Cenchrus spp. Eragrostis spp. Phragmites communis

EIeοcharis spp. Scirpus spp.

Hibiscus spp, Malva spp.

Centaurea spp. - Tussilago spp. Lapsana communis Tagetes spp. Erigeron spp. Anthemis spp. Matricaria spp.

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Taraxacum spp. Chrysanthemum spp. Cirslum spp.

Convolvulaoeae such as Convolvulus spp .. Ipomoea spp. and other

Cruciferae, such as Barbarea vulgar! S Brassica spp. Capsella spp. Sisymbrium spp. ThIaspi spp. Sinapis arvensis and other

Geraniaceae such as Erodium spp. and other

Portulacaeeae such as Portulaca spp.

Primulaceae such as Anagallis arvensis and other

Rubiaceae such as Richardia spp. Galium spp.

Scrophulariaceae such as Linaria spp. Veronica spp.

Solanaceae such as Physalis spp. Solanum spp. and other

Urticaceae, such as ürtica spp. Artemisia spp. 'Bidens spp. and other

Cuscuta spp. Jaquemontia tamnifolia

Arabidopsis thaliana Descurainia spp. Draba spp. Coronopus didymus Lepidium spp. Raphanus spp.

Geranium spp,

and other

Lysimachia spp.

Diodia spp. and other

Digitalis spp. and other

Nicandra spp. Datura spp.

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Violaeeae such as Viola spp.

Zygophyllaceae such as Tribulus terrestis

Euphorbiaceae, such as Mercurial! S annua

Umbelliferae such as Daucus carota Aethusa cynapium

Comraelinaeae

Commelina "spp.

Labiatae such as Lamium spp. and other

Leguminosae such as Medicago spp. Trifolium spp. Vicia spp. and other

Plantaginaceae such as Plantago spp.

Polygonaceae such as Polygonum spp. Rumex spp.

Aizoaceae, such as Mollugo verticillata

Amaranthaceae such as Amaranthus spp.

Boraginaceae such as Amsinckla spp. Myostis spp. and other

Caryophyllaceae such as Stellaria spp. Spergula spp. and other and other Euphorbia spp.

Ammi majus and other and other Galeopsis spp "

Sesbania exaltata Cassia spp. Lathyrus spp.

and other

Fagopyrum spp. and others and others and others

Anchusa spp. Lithospermum spp.

Silene spp. Cerastium spp.

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Saponaria spp. Scleranthus annuus

Chenopodiaceae, such as • Chenopodium spp. Kochia spp. Salsola potash

Lythraceae such as Cuphea spp.

Oxalidaceae such as Oxalis spp.

Ranunculaceae such as Ranunculus spp. Delphinium spp.

Papaveraceae such as Papaver spp. and other

Onagraceae such as Jussiaea spp.

Rosaeeae such as Alehemillia spp. and other

Potamogetonaeeae such as Potamogeton spp.

Najadaceae such as Najas spp.

Marsileaceae, such as Marsilea quadrifolia

Polypodiaceae such as Pteridium aguilinum

Alismataeeae such as Alisma spp. and other Agrostemma pallida and other

Atriplex spp. Monolepsis nuttalliana and others

and other

Adonis spp. and other

Fumaria officinalis

and other Potentilla spp.

and others and others and others

Saglttaria sagittifolia

Equisetaceae, such as

Equisetaceae spp. be fought.

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The herbicides according to the invention can be applied in their Amount fluctuate. The amount used depends mainly on the type of effect desired.

The application rate is generally between 0.1 and 15 or more, preferably 0.2 and 6 kg of active ingredient per hectare.

It is known that by grinding of drug suspensions, for example, bead mills in a very high fineness, ie, small particle size (depending on the milling time up to 100 wt.% Smaller than 2yu), is achieved.

It is also known that the biological effectiveness of various active ingredients is influenced by their grain size. It was Therefore all the more surprising that it was found that with the same grain size differences in the biological effectiveness of the Spray mixtures occur, depending on whether these spray mixtures consist of a wettable powder (sample A) or one according to the invention Herbicide (pattern B) were prepared.

The following examples explain the advantageous properties of the herbicides according to the invention.

example 1

50 parts by weight of l-phenyl- ⁱ ! -Amino-5-chloropyridazon- (6), 2 parts of dodecylbenzenesulfonic acid diethanolamine salt, 4 parts of an Na salt of a condensation product of sulfonated! Naphthalene with formaldehyde and 44 parts of water are ground as a suspension in a bead mill until at least 80 percent by weight of all particles are smaller than 2 / u. This suspension is divided; one half (sample A) represents a herbicide according to the invention and is diluted to the application concentration (3 kg of active ingredient in 500 liters of water) by mixing with water. The other half is dried on a laboratory spray dryer and dry ground on a pin mill to comminute agglomerates. This wettable powder (sample B) is dispersed in water and diluted to the same application concentration as sample A.

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The spray mixture from sample A was applied to various plants at a height of 2 to 10 cm compared to the spray Broth from sample B. applied. Although both spray mixtures consist of particles with the same particle size distribution, was 2 to 3 weeks after treatment found that sample A showed better herbicidal effectiveness than sample B.

The test result can be seen from the following table.

The same result is obtained if, instead of 2 parts of dodecylbenzenesulfonic acid diethanolamine salt, 2 parts of a Ethylene oxide adduct of 6 to 7 moles of ethylene oxide with 1 mole of isooctylphenol used.

Active ingredient
kg / ha

Scavenging plants:

Beta vulgaris

Beta vulgaris var. Conditiva Beta vulgaris var. Altissitna

unwanted plants; Alopecurus myosuroides Anthemis arvensls Capsella bursa pastoris Chenopodium album Digitaria sanguinalis Eumaria officinalis Galium aparine Lamium amplexicaule Matricaria chamomllla Mercurialis annua Raphanus raphanistrum Senecio vulgaris Setaria faberii Sinapis arvensis Thlaspl arvense

0 = no damage 100 = total damage

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Pattern A Pattern B 3 3 0 0 0 0 0 0 90 60 100 85 100 75 100 75 90 55 70 50 96 70 85 60 100 80 85 65 90 65 80 60 85 50 100 85 95 70

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Example -2

Various plants were grown in the greenhouse at a height of 4 to 12 cm with the following active ingredient

I l-phenyl-4-amino-5-chloropyridazon- (6)

as a 40 # (wt. $) highly concentrated aqueous suspension (formulation I)
compared to the active ingredient

II l-Phenyl-4-amino-5-chloropyridazon- (6) as 80 # iges (wt. ^) Wettable powder

(Formulation II),

each dispersed in 500 liters of water per hectare, treated. The application rates were 2, 2.5 and 3 kg of active ingredient, respectively per hectare. The plants were kept relatively dry during the duration of the experiment.

After 14 to 20 days it was found that Formulation I showed a better herbicidal effect with the same tolerance on the crop than formulation II.

The test result can be seen from the following table.

The same results are obtained if 7 parts of ethylene glycol or 7 parts of urea or 2 parts are used as the antifreeze Ethylene glycol + 7 parts urea are added to formulation I and the amount of water is reduced accordingly.

Active ingredient 2 I. 3 2 II 3 kg / ha 2.5 2.5 Useful plants: 0 0 0 0 Beta vulgaris 0 0 unwanted plants: 70 100 40 75 Chenopodium album 70 85 96 40 55 70 Galium aparine 60 80 8o 30th 55 50 Galinsoga parviflora "65 70 94 45 40 70 Amaranthus retroflexus 60 76 90 30th 60 60 Alopecurus myosuroides 45 70 65 20th 40 55 Avena fatua 50 25th

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- 15 - 2 I. 3 0 2 2412270 60 2.5 100 35 .Z. 30 451 Active ingredient 67 80 92 40 II kg / ha 80 2.5 3 Poa annua 50 75 Eohinochloa crus-galli 50 60

0 = without damage
100 = total damage

Example 3

In the field, various plants were grown with the following active ingredient at a height of 3 to 10 cm

1 l-Phenyl-4-amino-5-chloropyridazon- (6) as 40% concentrated aqueous suspension

compared to the active ingredient ..

II l-phenyl-4-amino-5-chloropyridazon- (6) as 80 # wettable powder,

In each case dispersed in 500 liters of water per hectare, treated. The application rate was 3 kg of active ingredient per hectare. The plants grew proportionately during the duration of the experiment kept dry.

After 2 to 3 weeks it was found that formulation I had a better herbicidal action with the same tolerance of the crop showed as formulation II.

The test result can be seen from the following table.

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- 16 - I. 2412270 3 o.z. 30 451 Active ingredient II kg / ha 0 3 Useful plants: Beta vulgaris 100 0 unwanted plants: 100 Chenopodium album 95 75 Sinapis arvensis 95 85 Galium aparine 70 Alopecurus myosuroldes 65

0 - without damage
100 = total damage

Example 4

An agricultural area was sown with various seeds. Immediately thereafter, the treatment was carried out with the active ingredients

I l-Phenyl-4-amino-5-chloropyridazon- (6) as 40 $ ige highly concentrated aqueous suspension

compared to the active ingredient

II l-phenyl-4-amino-5-chloropyridazon- (6) as 80 # wettable powder,

each dispersed in 500 liters of water per hectare. The application rate was 3 kg of active ingredient per hectare. During the duration of the experiment, the usable area was kept fairly dry.

After 4 to 5 weeks it was found that the active ingredient I had a better herbicidal action with the same tolerance on the crop showed as the active ingredient II.

The test result can be seen from the following table.

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- 17 - I. 2412270 3 O.Z. 30 451 Active ingredient II kg / ha 0 3 Useful plants: Beta vulgaris 75 0 unwanted plants: 75 Alopecurus myosuroides 80 40 Poa annua 85 60 Chenopodium album JO 60 Stellaria media 70 Galium aparine 50

0 = without damage
100 = total damage

Example 5

An agricultural area was sown with various seeds. Immediately thereafter, the treatment was carried out with the active ingredients

1 l-Phenyl-4-amino-5-chloropyridazon- (6) as 40% concentrated aqueous suspension

compared to the active ingredient

II l-phenyl-4-amino-5-chloropyridazon- (6) as 80 # wettable powder,

each dispersed in 500 liters of water per hectare. The application rate each amounted to 3 kg of active ingredient per hectare. The active ingredients were then incorporated into the soil. During the trial: The usable area was kept fairly dry for a long time.

After 4 to 5 weeks it was found that the active ingredient I had a better herbicidal action with the same tolerance the crop showed as the active ingredient II.

The test result can be seen from the following table.

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- 18 - I. 2412270 3 O.Z. 30 451 Active ingredient II kg / ha 0 3 Useful plants: Beta vulgaris 90 0 unwanted plants: 95 Alopecurus myosuroides 95 70 Poa annua 100 75 Chenopodium album 95 80 Stellaria media 85 Galium aparine 75

0 = without damage
100 = total damage

Example 6

An agricultural area was with the active ingredients

I l-Phenyl-4-amino-5-chloropyridazon- (6) as 40 # ige highly concentrated aqueous suspension

compared to the active ingredient

II l-phenyl-4-amino-5-chloropyrldazon- (6) as 80 # wettable powder,

each dispersed in 500 liters of water per hectare, treated. The application rate was 3 kg / ha of active ingredient in each case. Afterward the active ingredients were incorporated into the soil. Thereafter, the soil was filled with Beta spp. sown. During the duration of the experiment the usable area kept fairly dry.

After 4 to 5 weeks it was found that the active ingredient I showed a better herbicidal effect with the same tolerance on the crop than the active ingredient II.

The test result can be seen from the following table.

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Active ingredient I. 2412270 - 19 - kg / ha 3 o.z. 50 451 Useful plants: II Beta vulgaris 0 3 Beta vulgaris var. Conditiva 0 Beta vulgaris var. Altissima 0 0 unwanted plants: 0 Alopecurus myosuroides 90 0 Poa annua 95 Chenopodium album - 98 75 Stellaria media 100 75 Galium aparine 95 80 85 75

0 = without damage
100 = total damage

Example 7

In the open field, various plants were grown with the following active ingredients at a height of 2 to 10 cm

1 l-Phenyl-4-aemino-5-chloropyridazon- (6) as 40% concentrated aqueous suspension

II l-Phenyl-4-amino-5-chloropyridazon- (6) as 80 # wettable powder

III addition product of β to 7 moles of ethylene oxide with. 1 mole Isooctylphenol. "

I and II each with 2.5 kg / ha a. S.
III with 2 liters / ha

I + I1I with 2.5 kg / ha + 2 liters / ha
II + III with 2.5 kg / ha + 2 liters / ha,

each dispersed in 500 liters of water per hectare, treated.

After 2 to 3 weeks it was found that the formulation I + III had a better herbicidal effect with the same tolerance on the crop showed as the formulation II + III and the formulation I. In addition, the formulation has II + III a stronger herbicidal effect than the formulation

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The test result can be seen from the following table.

Active ingredient I. II III I + III II + III kg / ha a. S. 2.5 " 2.5 2 2.5 + 2 2.5 + 2 Useful plants: Beta vulgarls 0 0 0 0 0 unwanted plants: Chenopodium album 85 55 0 100 80 Galium aparine 80 55 0 95 75 Galinsoga parviflora 70 40 0 95 70 Amaranthus retroflexus 76 60 0 90 75 Alopecurus myosuroides 70 40 0 95 70 Avena fatua 50 25th 0 75 45 Poa annua 80 50 0 95 70 Echinochloa crus-galli 80 50 0 95 65

0 = without damage
100 = total damage

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Claims (3)

- 21 - O.Z. 30 451. Patent claims 1. Herbicide based on l ~ phenyl-4-amino-5-chloropyridazone- (6) or l-phenyl-4-amino-5-bromopyridazone- (6), characterized in that the active ingredient is in the form of an aqueous suspension with an active ingredient content of 10 to βθ percent by weight. 2. Herbicide according to claim 1, additionally containing an antifreeze agent. 3. Process for the preparation of a herbicide according to claim 1, characterized in that the active ingredient is finely ground in aqueous suspension together with wetting and dispersing agents. BASF Aktiengesellschaft 5O9S39 / 0966