DE2164459A1 - METHOD OF CONTROLLING UNWANTED PLANT GROWTH - Google Patents

Description

BadisGhe Anilin- & Soda-Fabrik AG

Our reference: O.Z. 27 880 Sws / Wil

6700 Ludwigshafen, December 22, 1971 Methods for combating undesired vegetation

The present invention relates to a method for controlling unwanted vegetation with - ^ enzothiadiazinone dioxide derivatives.

It is known that j5-isopropyl-2, l, j5-kenzo-thiadiazinon- (4) -2,2-T to use dioxide as a herbicide. The active ingredient is injected onto the leaves of green plants.

It has been found that an improvement in the effect is achieved if the undesired plants are used more than once Benzothiadiazinone dioxide derivatives of the formula

where R is a lower alkyl radical with up to 4 carbon atoms or the cyclohexyl radical, or the salts of these compounds are treated.

By lower alkyl radicals with up to 4 carbon atoms we mean methyl, ethyl, propyl, isopropyl, butyl, isobutyl or tert-butyl radical. Unwanted plants are all plants that prevent their growth on a certain area of the ground shall be.

The active ingredient is applied to the green plants more than once. For example, you can apply the active ingredient twice.

The first treatment of the plants with the active ingredient can be carried out shortly after the plants emerge, i. H. at a height of Plants from about 2 cm on. The following treatments

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some time later, for example at intervals of 6 up to 8 days. Both the useful plants as the unwanted plants are also treated. There should be an interval of at least 6 to 8 days between treatments lie.

The method is suitable for desired plants; Alisma plantago-aquatica Ammannia coccinea Amaranthus spp. Anthemis spp. Butomus umbellatus Centaurea cyanus Chenopodium album Chenopodium spp. Chrysanthemum spp. Cyperus spp. Qaleopsis spp. Galinsoga parviflora Galium aparine Geranium spp. Matricaria spp. papaver rhoeas polygonum spp. portulaca oleracea Raphanus raphanistrum Sagittaria sagittifolia Sida spinosa Sinapis arvensis Stellaria media Xanthium spp. Soirpus spp. Lapsana communis Sesbania exaltata

wherein the crops; Gossypium hirsutum Phaseolus vulgaris for the control of the following un-

Water frog spoon

Loosestrife

Amaranth species

Dog chamomile species

Swan flower

Cornflower

white goosefoot

Goosefoot species

Wildflower species

Sedge species

Hollow tooth types

small-flowered French herb

Sticky herb

Cranesbill species

Kami He types

Corn poppy

Knot ri cn species

Cabbage purslane

wild radish

Arrowhead

thorny velvet poplar

Mustard

Chickweed

Pointed burdock species

Rush species

Rain cabbage

Legume type,

Cotton beans

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Pisum sativum Arachis hypogaea Cucumis sativus Solanum tuberosum Trifolium

Linum usitatissimum Medieago sativa Zea mays

Daucus carota Oryza sativa Soy (Glycine) hispida Sorghum bicolor Allium cepa

not be harmed.

O.Z. 27 880 2164459 peas Peanut Cucumbers ■ potatoes clover Flax alfalfa Corn Carrots rice soy Sorghum Onions grain

The active ingredients can be in known forms of distribution, for example, as an aqueous solution, dispersion or emulsion, composed of water and active ingredient with the aid of conventional dispersants or as a solution in organic liquids or as a dispersion in an organic liquid, for example in paraffin oil, or as dust or as granules. Wetting agents or oils of various types can also be used can be added.

By salts we mean, for example, the alkali, alkaline earth, Ammonium, hydroxyalkylammonium, alkylammonium or hydrazine salts, z. B. the salts of sodium, lithium, potassium, calcium, iron, methylamine, trimethylamine, ethylamine, diethanolamine, Ethanolamine, dimethylamine, dimethylethanolamine, dodecylamine, Decylamine, octylamine, dodecy! Hexamethyleneimine, hexamethyleneimine, Guanidine, hydrazine, dirnethylhydrazine, phenylhydrazine, ethylhydrazine, Hydroxylamine, sthy! Hydroxylamine, ethylenediamine, aniline, Ammonia, barium, magnesium, copper, tin, zinc, aluminum, tripropylamine, Diethylamine, butylamine, methylallylamine, dipropylamine, Diisobutylamine, amylamine, N, N-dimethyl-N- (ß-chloroethyl ') hydrazine or 2-chloroethyl trimethylamine.

The following example explains the method according to the invention.

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example 1

In the Preiland the seeds of Oryza sativa, Soja hispida, Zea mays, Triticum aestivum, Cyperus esculentus, Galium aparine, Ipomoea purpurea and Lamium amplexicaule in loamy sand soil sown.

Then the plants

A) after emergence of the cultivated and weed plants (2nd to 4th leaf) with 1 kg / ha active ingredient 3-isopropyl-2,1,3-benzo-thiadiazinon- (4) -2,2-dioxide, dispersed in 500 liters of water per ha, treated or

B) with 1 kg / ha active ingredient 3-isopropyl-2,1,3-benzo-thiadiazinon- (4) -2,2-dioxide, dispersed in 500 liters of water per ha, β days after the time of treatment A) (weed plants η 3rd to 6th sheet) treated or

C) treated first according to A) and additionally according to B).

After 3 to 4 weeks it was found that treatment C) had the best overall effect, particularly on the weeds Cyperus esculentus, Galium aparine, Ipomoea purpurea and Lamium amplexicaule.

The test result can be seen from the following table:

Treatment type A BC

Oryza sativa (rice) Soja hispida (soy) Zea mays (maize) Triticum aestivum (wheat) Cyperus esculentus (lathe almond) 75 Galium aparine (gluteal herb) Ipomoea purpurea (funnel-shaped morning glory) 40 Lamium amplexicaule

(dead nettle embracing the stem) 40 30 75

0 = no damage

100 = complete death of the plants

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0 0 0 0 0 0 0 0 0 0 0 0 75 50 100 80 70 100 40 20th 75

Example 2

O.Z. 27 880

2164453

A test area with a population of Cyperus rotundus (round _{sedge) was treated with the active ingredient 3-isopropyl-2 i} 1,3-benzo-thiadiazinon- (4) -2,2-

dioxide (I),
dispersed in 500 liters of water per hectare, treated as follows:

A 1 and 3 kg / ha of active ingredient at a height of 10 to 15 cm

B 1 kg / ha of active ingredient at a height of 10 to 15 cm + 1 kg / ha active ingredient 8 days after the first treatment

C 1 kg / ha active ingredient at a height of 10 to 15 cm + 1 kg / ha active ingredient 8 days after the first treatment + 1 kg / ha active ingredient 6 days after the second treatment.

The test result can be seen from the following table:

treatment
kg / ha

A 1

B C 1 + 1 1 + 1 + 1

Cyperus rotundus
(round sedge)

0 = no damage 100 = total damage

20 50

70-80 90-100

-6-

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Claims (2)

- β - O.ζ. 27 88ο Claims Method of combating unwanted vegetation with Benzothiadiazinone dioxide derivatives of the formula where R is a lower alkyl radical with up to Ψ carbon atoms or denotes the cyclohexyl radical, or their salts by more as a one-time treatment of unwanted plants. 2. The method according to claim 1, characterized in that 3-isopropyl-2, l, 3-benzothiadiazinon- ( ⁱ ) -) - 2,2-dioxide is used as the active ingredient. Badische Anilin- & Soda-Fabrik AG y ' 309828/1 100