DE2265665C2 - herbicide - Google Patents

Description

COOH

in which X is halogen, methoxy or amino and η is 1, 2, 3 or 4, it being possible for methoxy and halogen or amino and halogen or methoxy, amino and halogen to be present at the same time.

herbicide
Separation from patent application P 22 17 722.6-41

The present invention relates to a herbicide that contains a mixture of two active substances

It is known that substituted benzoic acid ?! and Benzthiothiadiazinones have herbicidal effects. However, their herbicidal effect is poor

It has been found that a mixture of

a) a compound of the formula
O

in which X is halogen, methoxy or amino and η 1, 2, 3 or 4, it being possible for methoxy and halogen or amino and halogen or methoxy, amino and halogen to be present at the same time.

in which R is a lower alkyl radical with up to 4 carbon atoms, or their salts, such as alkali, Alkaline earth, ammonium, hydroxyalkyl or alkylammonium and hydrazine salts, e.g. salts with sodium. Lithium, potassium. Calcium, iron, Methylammonium. Trimethylammonium. Ethylammonium. Diethanoiammonium, Ethanolammonium, Dimethylamine, dimethylethanolamine, hydrazine or F'hcnylhydrazine. and

has a better herbicidal effect than the individual active ingredients

is The active ingredients a and b can be used in amounts from 0.5 to 5 kg / ha can be applied.

The mixing ratio of the active ingredients a: b is

5: 1 to I: 5, preferably 3: 1 to I: 3 parts by weight.

The mixtures are suitable in crop cultivation

ren, e.g. B. cereals, rice, soy, corn, potatoes, peas and beans, undesirable plants such as dicot seed weeds, monocot seed weeds or to fight Cypcrack.

The mixtures can be used pre-emergence and / or post-emergence. The new mixtures can be herbicides in the form of solutions, emulsions, suspensions, dusts or granules are used. The forms of application depend entirely on the intended use; they should ensure a fine distribution of the active substances in each case.

Medium to high mineral oil fractions are used to produce solutions that can be sprayed directly Boiling point such as kerosene or diesel oil, as well as coal tar oils and oils of vegetable or animal origin, also cyclic hydrocarbons, such as tetrahydronaphthalene. and alkylated naphthalenes in Consideration.

Aqueous use forms can be obtained from emulsion concentrates. Pastes or wettable powders (wettable powders) can be prepared by adding water. To produce emulsions, the substances can be used as such or dissolved in a solvent, by means of a network or Dispersants are homogenized in water. But it can also be effective. Substance. Emulsifying or dispersants and possibly solvents existing concentrates are prepared, which for Dilution with water are suitable. Oils of various types can be added to finished spray mixtures will.

Dusts can be produced by mixing or grinding together the active substances with one solid carrier material are produced.

Granules can be produced by binding the active ingredients to solid carriers.

In addition, dispersions that can be sprayed directly with oils can be produced.

The mixtures can be made with fertilizers. Insecticides. Fungicides or other herbicides.

example 1

The plants wheat (Triticum aestivum), Klcbkraut (Galium aparine). real chamomile (Matricaria chamomil-Ia). Foxtail grass (Alopecunis myosuroides) and annual bluegrass (Poa annua) were at

a height of 4 to 20 cm with the following individual products and mixtures, each emulsified or dispersed in 500 liters of water per hectare, treated:

C 2-methoxy-3,6-dichloro-benzoic acid 14 and 2 kg / ha of active substance

B + A 0.5 + 1.5 kg / ha of active substance C + A 14 + 04 kg / ha of active substance

A 3- isopropyl-2,13-benzo-thiadiazinon- (4) -
2 ^ -dioxide, 04, t, 14.2 and 3 kg / ha
active substance
B 23,6-trichlorobenzoic acid,
04 and 2 kg / ha of active substance Active ingredient
B. C. 10 kg / ha of active substance
04 2 1.5 2 20th 10 15th The table below shows that the
Mixtures after 8 to 14 days versus the
Individual components have a better overall effect
show favorable crop plant tolerance. 1 0 14th 2 3 0 B + A C + A Table 1 0 85 60 85 40 0 0 80 04 M4 14 + 0.5 25th 95 65 90 A. 50 60 70 95 0 10 30th 95 45 80 0.5 5 60 90 15th 100 95 Triticum aestivum 50 100 60 95 0 5 15th 10 10 100 95 Galium aparine 55 30th 5 5 80 75 Matricaria chamomilla 35 80 80 Alopecurus myosucndes 5 Poa annua 5 0 - without damage 100 - total damage.

Example 2

In the open field, after emergence, the crop plants soy (Soja hispida) and maize (Zea mays) and the undesired plants barn millet (Echinochloa crus galli) are grown. great millet (Setaria faberii). Tigernut (Cyperus esculentus), field mustard (Sinapis arvensis), pennsylvaiüsche pointed _{burdock v} Xanthium pensylvanicum), glutinous herb (Galium ayarine), real chamomile (Matricaria chamomilla), English ragweed (Lolium perenne), common panicle grass (Poa trivialis) with the following single active ingredients Mixtures

3-Isopropyl-2,13-benzo-thiadiazinon- (4) -2,2-dioxide 0.7 and 2 kg / ha of active substance

Table 2

40

D 3-Amino-24-dichloro-benzoic acid 13 and 2 kg / ha of active substance

^{A + D} ° ' ^{7 and U k} S ^{/ ha} ^ ^{tlve Substan} * treated

After 10 to 14 days it was found that the mixture A + D was better tolerated by the Cultivated plants and shows a better herbicidal effect than the individual active ingredients A and D.

The test result can be seen from the table below.

Active ingredient substance 0 D. 2 A + D A. 2 0 10 kg / ha active 10 1.3 15th 0.7 + U 0.7 20th 0 80 0 Soy hispida 0 75 0 80 0 Zea mays 0 80 50 10 85 EchinochJoa cms galli 10 90 45 30th 90 Setaria faberii 15th 80 10 10 90 Cyperus esculentus 40 80 20th 10 100 SiiupU anrensis 40 0 5 10 100 Xanthium pensylvanicum 50 0 10 70 85 Galium aparine 45 5 80 95 Matriaria chamomilla 50 40 70 Lolium pcrenne 0 50 90 Foa trivialis 0

0 = without damage.
100 - total damage.

Example 3

In the greenhouse the plants and the soil are after the emergence of barley (Hordeum vulgar), rye (Seeale cereale) and wheat (Triticuni aestivutn) and the undesirable plants sticky weed / (Galium aparine) and black foxtail (Aiopecurus myosuroides) with the following single active ingredients? '"! and their mixtures dealt with:

A 3-isopropyl-2, l, 3-benzo-thiadiazinon- (4} ·
2 ^ 2-dioxide 0,5,0,75.1.0 and 1.5 kg / ha
active substance

B 2,5-dichloro-β-nieinoxyberzoic acid
(Dimethylammonium salt)
0.5, 0.75, 1.0 and 1.5 kg / ha of active substance

A + B 0.5 + 1.0.1.0 + 0.5, 0.75 + 0.75 kg / ha

After 10 to 14 days it was found that the mixtures had a better herbicidal effect showed the same compatibility on the crop plants. The test result is shown in the table below see:

Table 3

Active ingredient
A.

kg / ha of active substance
0.5 0.75 1.0 1.5

A + B

0.5 0.75 1.0 1 _T 5 0.5 + 1.0 1.0 + 04 0.75 + 0.75

Hordeum vulgar
Seeale cereale
Triticum aestivutn
Galium aparine
AJopec. myos.

0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 0 0 0 10 0 U 0 0 0 0 0 0 0 0 10 0 0 0 30th 35 40 60 37 45 50 60 100 100 1Ö0 2 5 5 10 25th SO 35 45 87 80 80

0 = without damage.
100 = total damage.

Claims (1)

Claim: Herbicide containing a mixture of
a) a compound of the formula b) a compound of the formula COOH in which R is a lower alkyl radical with up to 4 carbon atoms, or their salts and b) a compound of the formula