DE2119628A1 - Compound herbicide - Google Patents

Description

9 1 1Q R PATENT ADVOCATE ^ ι ι ο υ

DR. ING. KARL BOEHMERT DSFL-ING. ALBERT BOEHMERT

28 BREMEN FELDSTRASSE 24 TEL (04 21) 444038

..... Postal checking account * Homburg 126083

File: Nid bank account: Bremer Bank, Bremen. Account 1001449

Name d. Note:. .

Spa. SIPCAH ...

My reference: ²⁸ Bremen, the ..

S 1640 April 22, 1971

SpA SIPCAM SOCIETA ¹ ITALIANA PRODOTTI CHIMICI E PER L'AGRICOHKJRA - MILANO, Milan, Italy

Compound herbicide

The invention relates to a composite herbicide. The invention relates to improved chemicals for the destruction of weeds in agricultural crops and for the production and use such means.

The problem of chemical control of agricultural Cultures, especially weeds infesting cereal and vegetable fields, is becoming more and more difficult since the spread of new agricultural methods the pre-existing balance in the assignment from weeds to plants.

It is increasingly observed that certain cultures on the same acreage for more than one harvest period be cultivated. This leads to the fact that the

48

109845 / 19S8

herbs that characterize this particular type of soil are stable and have not been destroyed during the first cultivation period, have the opportunity to to appear stronger and stronger.

It is in fact known that the common herbicides, which, for example, in cereals and Find vegetable crops use, have the disadvantage that they are not effective against all weeds occurring in such crops and that in the Application of such herbicides results in the phenomenon of selection among the various species of weeds that are present of the relevant usable area are available, is observed, with the number on this usable area the percentage of weeds that are resistant or not very sensitive to these herbicides increases.

Therefore, certain areas can be found in different areas Species of weeds in particularly large numbers, which agricultural crops also do then do considerable damage if the ordinary chemical herbicides are used, which themselves Prove to be insufficiently effective.

The invention is based on the task of parts of the known herbicides to avoid and one To create herbicide which has improved effectiveness and selectivity. Also should the invention provides a method of making and using such herbicides.

The object on which the invention is based is achieved by a mixture of (I) 2,4-, 6-trichlorophenyl-4'-nitrophenyl ether

109845/1958

or (II) 2, ^ -Dichloro-e-fluorophenyl-4-nitrophenyl ether

Cl

and at least one of the following compounds (III): -N- (5-4 - dichlorophenyl) -N · -n-butyl-H '-methylurea f -H- (31 * -dichlorophenyl) -N'-metoxy-N '-methylurea -H- (3,4-dichlorophenyl) -N' -ET ¹ -dimethylurea f -N-phenyl-N'-IT · -dimethylurea f -N- (hexahydro- ^, 7-methyl-indane -5-) -N ¹ -N-dimethylurea

-U- (4-bromo-4-chlorophenyl) -N'-metoxy-N'-methylurea f
-2-chloro-N- (isobutoxymethyl) -2 '-6' -axetoxylid

The compound herbicide of the present invention exists accordingly from compounds, each of which alone already exerts a herbicidal effect. The most interesting egg

1098 45/19 58

The property of the compound herbicide of the invention is that it is most used in agricultural Cultures, especially weeds occurring in cereal crops and in some vegetable crops effectively attacks without the disadvantages mentioned of the known herbicides occur. A synergetic effect or an alternating reinforcement is achieved compared to the "individual ingredients of the compound herbicide achieved when these." would be used individually.

In addition to the advantageously improved Herbicidal activity, it has surprisingly been found that the compound according to the invention :; Herbicide allows the same result by using lesser amounts of an active herbicide To achieve substance. In other words, the herbicide composed of the present invention offers a noticeable one economic advantage.

It was also found that by using significantly lower doses of the individual components the mixture often achieves a greater selectivity the risk of damage to the treated crops is reduced.

The enhancement and enhancement effect observed with the above compound herbicides will, will generally have a relationship between the Compounds (I) or (II) and a herbicide of the series III achieved, which is preferably between 1:10 and 10: 1 in terms of a weight ratio of one active substance of the compound I {or II) As a mixture with an active sübatanz of the III series. "

109845 / Ί9 58

While the invention includes the use of only two herbicidal substances, the use of compound herbicides with three or more components, which are included under the named components, are not excluded.

Essentially, the aforesaid compound herbicides of the invention are used industrially in the manner manufactured that they are used in agricultural practice can be used both in the form of liquid-soluble, in particular water-soluble powders or pastes, and in the form of emulsifiable liquids, which are sprayed onto the cultivated areas from which the weeds are to be removed. The herbicides according to the invention can, however, also depending on the desired application in the form of dry Powder or granular form.

In order to make the compound herbicides useful, the above-mentioned active substances are used suitable components added, which are either inert substances or have a biological effect, such as surface-active additives or penetrants, which in any case are biological Can increase the effectiveness of herbicides.

In particular, such additives can consist of fertilizers, both simple and ternary (with Nitrogen, phosphorus and potassium), as well as binary baits complex (for example with microelements).

Such fertilizers can also be mixed with the herbicides added according to the invention, At the same time you achieve a fertilizing effect with the weed removal.

1 00Ö45 / 1958

According to the requirements of the different Cultures and depending on the desired application the compound herbicides according to the invention can be used either before or after sowing the crops, however, before the cultures break through the crumb, in in some cases, however, can also be used after the cultures have grown out of the earth's testicle.

The following design examples are only intended the clarification of the invention and are not of a limiting nature.

example 1

33 kg of 2,4,6-trichlorophenyl-4 -nitßophenyläther are mixed with 25 kg of H- (3,4-dichlorophenyl) -N'-n-butyl-N ^l -methylurstoffr, 36 kg of kaolin, 1 kg in a suitable mixer Sodium diethyl sulfosuccinate and 5 kg sodium lignosulfonate mixed, after which the entire Hasse is then finely ground in a jet mill ;; .

This gives a water-dispersible powder suitable for spraying.

Example 2

The following components are added one after the other to a liquid mixer equipped with a Buhrer: 10 kg 2 _t 4 _t 6-trichlorophenyl-4 ^l -nitrophenyl ether, 3.6 kg 5- (3 »4 dichlorophenyl) -H'-metoxy-ll ⁱ , - ethjlurea, 36.4 kg xylene, 40 kg cyclohexanone and

1098 4 5/1958

40 kg of an emulsifier based on alkylarylsulfonate. These components are made with an alkylphenol polyethylene glycol ether according to the type of sbprofor-A solution mixed, which emulsifies in water. The solution thus obtained can be sprayed.

Example 5. , ._ ,. _

In a powder mixer, 15 kg of 2,4-dichloro-6-fluorophenyl-4 ^f -nitrophenyj.äther, 25 kg of N- (3,4 dichlorophenyl) -N'-ir ^l -dimethylurea, 50 kg of kaolin and 5 kg of sodium diouthylnaphthalene sulfonate are added mixed. The entire cash register is then ground, preferably in an air mill, using a water-dispersing

powder that can be sprayed is obtained will.

Example "

San Pastore wheat is sown on a cultivated area, which has a medium, sandy soil. On the day after sowing, the herbicides listed below are applied after the aqueous Suspensions have been prepared according to the example given above. The distribution' takes place through a spray pump with a rod-shaped atomizer, through the 500 l of the aqueous mixture can be applied per hectare. The results obtained after 60 days are shown in Table 1.

10 9 8 4 5/1958

Table 1

Compound herbicides and destruction% exposure dose active substance per the weeds Hectares, ____ «- ■ _ ■ —_—. Cultures

Gramineae dicothyledons

-2,4,6-Trichloropheny1-4'-nitrophenyl ether (Connection I)

3 kg

-K- (3,4, -dichlorophenyl) -N'-n-butyl-N'-metny! Urea

4 kg

-N- (5,4, -dichlorophenyl) -ir ^f metosqy-N'-methylurea f

1 kg

-N- (3,4, -dichloropheny1) -N ·, N'-dimethy! Urea

1 kg

2 kg

86 38 15th 90 81 10 73 74 45 74 69 50

cCs ^ tbyl) -2 \ 6'-acetoxylid 87 52

20th

-2j4 ₉ 6-trichlorophenyl-4 · - nitrophenyl ether (compound 1)

. 1.5 kg

-N- (3,4-dichlorophenyl) -N ^f -n-butyl-N'-methylurea

2 kg

-K- (3 »4-dichlorophenyl) -N '-raetoxy-N · -methylurea

0.5 kg

-K- (3,4-dichlorophenyl) Ν ', Ν-dimethylurea

0.5 kg

-2-0hloro-N- (isobutoxymethyl) -2'6'-acetoxylide

1 kg

12th 0 52 0 46 0 39 0 28 0

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. Composite herbicides and extermination $ damage data dose of active .Substanz per weeds account the hectares - Cultures

Gramineae dicothyledons

-2,4,6-tri chlorophenyl-4 ^r nitrophenylather

+ 1.5 kg

N- (3 »4 · dichlorophenyl) -H-n-butyl-N * -methylurea 2 kg 96

-2,4,6 ^ Erichlorophenyl-4'-nitrophenyl ether

+1.5 kg N-

- (3,4-dichlorophenyl) -N-metoxy-lf'methyl urea 0.5 kg 92

-2,4,6-trichlorophenyl-4'-nitrophenyl ether

+ 1.5kg

N- (3, A-dichlorophenyl) N ^f , li'-di-

(,
methylurea

-2,4,6-tri chlorophenyl -4-ni. - tropheny ether ₊ ^ ^ a 2 -

-chloro-N-cisobutoxyniethyl) ^ ', 6'-acetoxylide 1 kg 97

98

96

90

89

A clear synergetic effect is observed, which is expressed in the fact that a mixture with a certain dose of a compound I with a certain dose of a Series III compound yields better results than the sum of the results that can be obtained if half the dose of the particular compound I is added to half the dose of the compound from the series Components III is used. Besides this increased

5/195

Effectiveness is achieved that the cultures are not damaged in contrast to that observed when using double the doses of the compounds Effect ^

Example 5

A cultivation area with medium, clayey soil is sown with Generoso wheat. The day after sowing a spray treatment is carried out, with ei- & e Spray pump with a spray stick is used, which is about 400 1 more aqueous, the herbicides with the one in the Active substance dose shown in Table 2. Mixed breed distributed per hectare. The table shows the results that can be observed 80 days after treatment «

Table 2

Compound herbicides & ^ annihilation% exposure dose of active substance per hectare of weeds . Cultures

Gramineae dicotyledons

-2,4-DichloΓo-δ-fluöΓophenyl-4 ■ -Nitrophenyl ether (compound II)

0.6 kg 76 42 12

-N- (3,4-dichlorophenyl) -N · n -butyl-N'-methylurea ^

-K- (3, ^ -dichlorophenyl) -N · -metoxy-U ¹ -methylurea f

1 kg 70 75 35

-2-chloro-H- (isobutoxymethyl) -2 ■, δ'-acetoxylide ₁

109845/1958.

-2,4-dichloro-6-fluorophenyl-4'-nitrophenyl ether

(Connection H) 0.3 kg 40 20

-N- (3,4-dichlorophenyl) -IT · n-butyl-H ^f -methyl urine to ff

2 kg 39 36

-N- (3, 4-dichlorophenyl) -N • metoxy-H * -methylurea f

0.5 kg 40 38

-2-ChIo] PO-If (isobutoxymethyl) 2 ', 6 ¹ -a * etoxylid _Λ

-2, 4-dichloro-6-fluorophenyl 4 · nitrophenyl ether +0.3 kg

2-chloro-Ä- (isobutoxymethyl) -2.6'-acetoxylide ₁

-2,4-dichloro-6-fluGEt / ophenyl-4'-nitrophenyl ether + 0.3 kg K- (3, 4-dichlorophenylJ -N · ^ n-butyl-H'-methylurea

2 kg 97 96

-2, 4-dichloro-6-fluorophenyl-4 * -nitrophenyl ether + 0.5 kg N- (3, 4-dichlorophenyl) -N · -me t oxy-N'-ethylurea ₀ ^

As already described at the end of Example 4, and also in this case, the advantages that can be achieved by mixing the compounds II with a compound of the IH series are increased watch.

Example 6 Half-length hammocks are placed on a light floor.

109845/1958

Sown carrots and green © Mangiatuttο beans. A Day after sowing, the herbicides are applied using a Spray pump applied with a spray stick, which 600 l of an aqueous mixture per hectare releases the active components of the herbicides in those shown in Table 3 Contains cans. 40 days later, the results shown in Table 3 are observed:

Table 3

Compound herbicides and ^ annihilation% Besehadi dose active substance per the weed infestation of the KuI hectare doors

Gramineae dicotyledons Carrot boh - 0 nen 5 0 3,4,6-dichlorophenyl-4 ^! nitrophic 15th nylather (compound I) 10 0 3 kg 80 50 30th -N- (3,4-dichlorophenyl) -H '-me- toxy-H-raethylurea 5 0.75 kg 75 68 0 -2-chlorο-N- (isobutoxymethy1) - 40 2 ^l -6 ^f -acet03cylid 1.5 kg 85 31 0 -2,4,6-trichlorophenyl-4 '--- nitrophenylether (compound I) 0 1.5 kg 33 13 —BT-C3> 4-dichlorophenyl) -N-methoxy- H-methyl urea o, 375 kg 31 32 -2-chloro-li- (isobutoxyme thy 1) - 2 ¹ -6'-acetoxylid '0 75 te 37 10

109845/1958

-2, 4, 6-trichloropheny 1-4 · nitrophenyl ether + 15 kg N- (3,4-dichlorophenyl) -N ' -metoxy-K -methylurea f

0.375 kg 94 95 0

-2,4,6-trichloropheny 1-4 · nitrophenyl ether S +1.5 kg 2-chloro-N- (isobuüoxyäthy1) -2 · -6'-acetoxylid

0.75 kg 90 84 0

The advantages described at the end of Example 4 are also achieved in this case, in the mixtures of the compound I can be used together with the compounds of the III series.

109845/1958

Claims (1)

Expectations 1. Compound herbicide, characterized by a mixture of (I) 2,4,6 ^ richlorophenyl - ^ '- nitrophenyl ether Cl O Cl or (II) 2,4-dichloro-6-fluorophenyl-4 ^f -nitrophenyl ether i ¹ Cl and at least one of the following compounds (III) -H- (3 - ^ - dichlorophenyl) -N · -n-butyl-N'-methylurea -5- (3,4-dichlorophenyl) -N'-metoxy-H · -methy! Urea -N- (5, ^ - dichlorophenyl) -N'-N'-dimethy! Urea grl -nah · -d imethylurea f 109845/1958 -O-N ', N-climethylurea -N- (4-bromo ~ 3-clilorophenyl) ~ N '-metoxy-N · -methylurea f -2-Ghloro-H- (isobutoxymethyl) -2 '6'-acetoxylide. 2. Herbicide according to claim 1, characterized in that that the weight ratio between the compound (I) (or the compound II) and the compound or the Compounds of series (III) in the mixture between 1:10 and 10: 1 is. 5. Herbicide according to claim 1 and 2, characterized by a mixture of 2,4,6-trichloro-phenyl-V-nitrophenyl ether (I) and ^ - (3,4-dichlorophenyl) -N-n-butyl-B-methylurea (III) A-. Herbicide according to spoke 1 and 2, characterized by a mixture of 2 _t 4,6-5richlorophenyl-4'-nitrophenyl ether (I) and H - (?, 4-dichlorophenyl) -N ^l ~ metoxy-N-metayiurea (III) 5 «Herbicide according to claim 1 and 2, characterized by a mixture of 2,4,6-trichlorophenyl-4- ^t -nitrophenyl ether (I) and a mixture of 2,4,6-trichlorophenyl-4 ^f -nitrophenylätiier (I) - and 2-ghloro-läf ¹ - (isobutoacymethyl) -2 ^ 66 * acetoxylide (III). 6. Herbicide according to claim 1 and 2, characterized by a mixture of 2 _t 4-dichloro-6-fluQrophenyl-4'-nitrophenyl ether (II) and N- (Ji ^, - dichlorophenyl) HVn ^ butyHK'-ethyl urea (III) . 109845/1958 7. Herbicide according to claim 1 and 2, characterized by a mixture of 2,4-dichloro-6-fluorophenyl-4 ■ nitrojkhenyl ether (II) and N- (3 »4-dichlorophenyl) -H-netoxy-F'-methylurea (III). 8. Herbicide according to claim 1 and 2, characterized by a mixture of 2,4-dichloro-6-fluorophenyl- ^ ' nitrophenyl ether (II) and 2-chloro-li (isobutoxymethyl) -2'-6 * ecetO3Eylid (III). 9. Herbicide according to one of claims 1 to 8, characterized by a mixture which in addition to the specified components contains carrier substances and / or inert solvents. 10. Herbicide according to one of claims 1 to 8, characterized by means of a mixture that, in addition to the specified components, contains active carrier substances or contains solutions as penetrants, surfactants and / or fertilizers. 11. Weed control methods in agriculture, characterized by applying a herbicide according to any one of claims 1 to 10 to the cultivated area. 12. The method according to claim 11 »characterized in that that grain and / or vegetable cultivation areas, in particular wheat fields, are treated.