RU2025974C1 - Herbicidal composition - Google Patents

Abstract

FIELD: agriculture. SUBSTANCE: herbicidal composition contains 1-(4,6-dimethoxypyrimidine-2-il)-3-(3-trifluoromethyl-2-pyridilsulfonyl) urea and ammonium salt homoalanin-4-il-(methyl)-phosphonic acid in a weight relation of 1:(0.6-80). EFFECT: higher efficiency. 5 tbl

Description

 The invention relates to a herbicidal composition comprising, as active ingredients, 1- (4,6-dimethoxypyrimidin-2-yl) - 3- (3-trifluoromethyl-2-pyridyl-sulfonyl) urea (hereinafter referred to as “Compound A” and the homoalanine ammonium salt -4-yl (methyl) phosphinic acid (hereinafter referred to as “Compound B”), in a mass ratio of 1: (0.6-80).

 Many varieties of herbicides have been developed and are currently being applied. Since the objects of suppression or regulation with herbicides include a wide variety of weeds with a long germination period, there has always been a need to develop herbicides having a wider range of herbicidal action, high activity and a stable herbicidal effect.

 As a result of extensive research to develop a herbicide with the above characteristics, it was found that the herbicidal composition according to the invention can suppress a wide variety of weeds that appear on fields with crops of agricultural crops, as well as on arable land. More specifically, it was found that the herbicidal effect of the herbicidal composition according to the invention is unexpectedly higher than the simple addition of the herbicidal effects of the individual active ingredients, and in short, manifests itself in a synergistic herbicidal effect, so that the herbicidal composition of the invention can be used with smaller amounts of active ingredients with extended herbicidal spectrum and persistent herbicidal action compared to any of the individual active ingredients when they are applied o to the bottom. Thus, the invention was completed.

 The object of the invention is to provide a herbicidal composition comprising, as active ingredients, compound A and the ammonium salt of compound B, in a weight ratio of 1: (0.6-80).

 Compound B and its salt, as active ingredients used in the herbicidal composition of the present invention, encompass optical isomers, examples of which include D, L-homoalanin-4-Yl (methyl) phosphinic acid (common name: D, L-glufosinate, referred to herein hereinafter referred to as the "D, L-isomer of compound B" and L-homoalanin-4-yl (methyl) -phosphinic acid (common name: L-glufosinate, hereinafter referred to as the "L-isomer of compound B").

The amount of the herbicidal composition according to the invention used cannot be determined unambiguously, because it varies depending on the ratio when mixing the active ingredients, the type of formulation, the type of weed being treated, weather conditions, etc. However, such an amount is usually applied that 0.05 is applied -5 g, and preferably 0.2-3 g, per ar / ar (a) = 100 m ² ) of compound A or its salt in combination with 0.3-30 g, and preferably 2.5-15 g, per ar another specific herbicidal compounds (compounds), and the total number honors the active ingredients is 0,35-35 g and preferably 2,5-18 g per are. When the herbicidal composition of the invention is applied after dilution with water, additional agents (or adjuvants), such as dispensers, can be used if necessary, or if desired.

 It often happens that the corresponding active ingredients exhibit some disadvantages in terms of herbicidal activity when used alone. However, there may be cases where two types of active ingredients are used in combination, the resulting herbicidal activity is higher than the activity obtained by simply summing up the activities of each of the two active ingredients (i.e., the expected activity). In this case, they say that a synergistic effect is detected. The expected activity, which is given for a particular combination of two types of herbicides, can be calculated using the following equation, which is described, for example, in the publication SR Сolby, Weeds, "Calculation Synergistic and Antagonistic Responce of Herbicide Combinations", Volume 15, pages 20-22 (1967).

В приведенном уравнении α представляет степень ингибирования роста (%) при обработке количеством а (г/ар) гербицида А; β представляет степень ингибирования роста (%) при обработке количеством b (г/ар) гербицида В; и Е представляет ожидаемую степень торможения или ингибирования роста (%) при применении а (г/ар) гербицида А и b (г/ар) гербицида В.E = α + β-

In the above equation, α represents the degree of growth inhibition (%) when treated with amount a (g / ar) of herbicide A; β represents the degree of growth inhibition (%) when treated with the amount of b (g / ar) herbicide B; and E represents the expected degree of inhibition or inhibition of growth (%) when applying a (g / ar) of the herbicide A and b (g / ar) of the herbicide B.

 That is, if the actual degree of growth inhibition (found value) is higher than the degree of growth inhibition (calculated value) determined using the above calculation, we can say that the activity achieved with the combination of herbicides manifests itself in a synergistic effect.

 The herbicidal composition according to the invention is extremely useful in view of the fact that it completely eradicates a wide variety of weeds, ranging from annual weeds to perennial weeds, even when used with small amounts of active ingredients. In addition, when it is applied either before the emergence of seedlings, or after emergence of weeds, it is so effective that it can exhibit a high level of herbicidal action when applied by processing soil, leaves. Therefore, the herbicidal composition according to the invention is useful for weed control not only on agricultural and horticultural lands, including upland fields, orchards, etc., but also on non-agricultural lands, including playgrounds, open plots, forests and courtyards or grounds with containers (storage areas for tanks or tanks).

 The herbicidal composition according to the invention is obtained by mixing various auxiliary agents (adjuvants), with compound A and another specific herbicidal compound, converting to a formulation such as wettable powder, suspension concentrate, water dispersible granules, dusts, water soluble granules, water soluble powders, or soluble concentrates , in accordance with any conventional method of preparing agricultural chemicals. Compound A and another specific herbicidal compound can either be mixed together and converted to a formulation, or prepared as separate formulations and mixed together.

 Mentioned formulations of the herbicidal composition of the invention may contain 1-98%, and preferably 2-95%, by weight ratio of active ingredients.

 Examples of said auxiliary agents (adjuvants) include solid carriers such as diatomaceous earth, hydrated lime, calcium carbonate, talc, white coal, kaolin, bentonite, jiclite, water soluble starch, sodium carbonate, sodium bicarbonate and sodium sulfate; antifreeze agents such as ethylene glycol and propylene glycol; determinants or distributors and surface active agents such as salts of alkyl sulfates, salts of alkyl benzene sulfonates salts of lignosulfonate, polyoxyethylene glycol alkyl ethers, polyoxyethylene lauryl ethers, polyoxyethylene alkyl aryl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyethylene ether sorbitan esters , salts of dialkyl sulfosuccinates, salts of sulfates of alkyl diglycol ethers, salts of sulfates of polyoxyethylene alkyl aryl ethers irova, salts of polyoxyethylene alkyl aryl phosphates, polyoxyethylene hydrogenated castor oil, salts of styryl phenyl phosphate, and condensates of salts of naphthalenesulfonate and formalin; edible oils (vegetable oils) and mineral oils such as olive oil, coconut oil (cottonseed oil), castor oil, paraya oil, camellia oil, coconut oil, cottage oil, corn oil, rice oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil, linseed oil, tung oil, and liquid paraffin; solvents such as propylene glycol monomethyl ether; thixotropic materials such as aluminum-magnesium silicate and bentonite-alkylamino complexes; and thickeners such as xanthan gum. Mentioned auxiliary agents can be used in pre-mixed form, if necessary. The herbicidal composition of the invention obtained as described may further include other herbicides, fungicide insecticides, and / or plant growth regulators incorporated therein.

The description will now be presented by examples of formulations of the herbicidal composition of the invention, which, however, are not restrictive. PRI me R I preparative form Ammonium salt D, L isomer of compound B 30 wt. h. Compound A 2 parts by weight Soybean oil 54 parts by weight Bentonite-alkylamino complex (New D Orben ^® : manufactured by Shiraisi Kogio Kaysia, Ltd.) 2 parts by weight A mixture of polyoxyethylene alkyl aryl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl aryl phosphate, sodium dialkyl sulfosuccinate and a polyoxyethylene fatty acid ester (Sorpol 3747K: manufactured by Tlho Chemical Industry Co. Ltd.) 12 wt.
The components mentioned are mixed evenly using a wet spray gun to form an oil-based suspension concentrate.

Formulation Example 2
Ammonium salt of D, L- isomer 30 parts by weight

 Compound A 2 parts by weight

 Liquid normal paraffin 51 parts by weight

 Bentonite-alkylamino complex (New D Orben) 2 parts by weight

 Polyoxyethylene sorbitan trioleate (Sorbon T 85, manufactured by Toho Chemical Industry Co., Ltd.) 15 parts by weight

 The ingredients mentioned are mixed evenly with a wet spray gun to form an oil-based suspension concentrate.

Formulation Example 3 Ammonium salt α -
isomer of compound B 30 parts by weight

 Compound A 2 parts by weight

Zhiklit 51 parts by weight Condensate of sodium naphthalenesulfonate and formalin (Lavelin S: production of
My Dai-iti Kogio Seyaku Co.,
Ltd.) 2 parts by weight

White coal 10 parts by weight White coal sodium polyoxyethylene alkylaryl ether sulphate premix (Sorpol 5039, manufactured by Toho Chemical Indus-
Stree Co., Ltd.) 5 parts by weight

 Said components are mixed together to form a wettable powder.

Formulation Example 4 Ammonium salt D, L-
isomer of compound B 80 parts by weight

Compound A 5 parts by weight Surfactant of a special polycarboxylic acid-polymer type (Demol EP: manufactured by Kao
Corporation) 8 parts by weight

 Sodium sulfate 7 parts by weight

 These components are dissolved or suspended in 3 times the amount of water and dried using a spray dryer to obtain water-dispersible granules.

 Formulation Example 5

Ammonium salt D, L-
isomer of compound B 2 parts by weight

Compound A 0.2 wt.h. Calcium carbonate
(fine granules) 92.8 parts by weight Sodium dialkylsulfosuccinate (Neokol UK: manufactured by Daiichi
Kogio Seiyaku Co., Ltd.) 1 parts by weight Polyoxyethylene-octylphenyl ether (Neugen EA-92: manufactured by the company
Daiyoi Kogio Seiyak Co., Ltd.) 2 parts by weight

 White coal 2 parts by weight

 The above components are mixed together to form granules.

Formulation Example 6 Ammonium D, L-
isomer of compound B 89 parts by weight

Compound A 6 parts by weight Condensate of naphthalene sodium sulfonate and
raspberries (Laurelle FAN) 5 parts by weight

 The above components are mixed together to form a wettable powder.

Formulation Example 7 Ammonium salt D, L-
the isomer of compound B 82.5 parts by weight

 Compound A 5.5 parts by weight

Sodium bicarbonate 7 parts by weight Sodium Alkyl Sulfate
(Monogen U-500) 5 parts by weight

 Said components are mixed together to form a water-soluble powder.

Formulation Example 8 Ammonium salt D, L-
isomer of compound B 60 parts by weight

Compound A 4 parts by weight Sodium Alkyl Sulfate
(Monogen U-500) 15 parts by weight

 Calcium lignosulfonate 10 parts by weight

 Sodium sulfate 11 parts by weight

 Said components are mixed together to form a wettable powder.

 The herbicidal effect of the herbicidal composition of the invention will be further demonstrated by the following test examples.

 Test Example 1 (Foliage Processing).

ования роста (%) = (1 _

) х 100
Пример 2 испытания (Обработка листвы).The soil of the highlands was placed in Wagner pots with a capacity of 1/5000 ar / ar (a) = 100 m ² and tubercles were planted in it (heaps (from Solidago altissima, collected in the fields, and after that the heaps were grown in a greenhouse. When the plants reached height 20-30 cm, using a small sprayer on the foliage of the plants, a predetermined amount of each herbicidal composition was applied, which was pre-diluted with 15 l of ar water and then mixed with 0.05% (vol / vol) of the spreader (Sin Rino: manufactured by Nihon Noyaku Co. , Ltd.). 25 days after application with help foliage treatment, measured by fresh weight of leaves Degree of growth inhibition (%) which is shown in Table 1, was calculated according to the following equation..:

growth rate (%) = (1 _

) x 100
Test Example 2 (Foliage Treatment).

 The soil of the upland fields was placed in pots with a capacity of 1/10000 ar and sown with Digitasia sanguinalis. When the plants reached stage 4 of the leaf, a predetermined amount of each herbicidal composition was applied to the foliage plants using a small sprayer, which was diluted with water in an amount of 15 L per ar, and then mixed with 0.2% (vol / vol) of the spreader (Syn Reno). 20 days after application by processing the leaves, the wet mass of the land part of the plants was measured. The degree of growth inhibition (%) calculated using the equation given in test example 1 (found value) and the degree of growth inhibition (%) calculated using the cited Colby equation (calculated value) are shown in Table 2.

 Test Example 3 (Foliage Processing).

 On the field where weeds such as Solidago altissima, Agropyron smithii and Digitaria sanguinalis grew in the mixture, when the average height of the plants of these weeds reached 20-40 cm, a specified amount of each herbicidal composition was applied using foliage treatment, which pre-diluted with 15 L per ar of water, and then mixed with 0.05% (v / v) of the spreader (Sin Rino). 30 days after the application to the foliage, the herbicidal effect of the herbicidal composition was checked by visual observation in accordance with the following evaluation criteria given in Table 3.

 The results are shown in table 4.

и

бирования =

1 -

× 100Comparative Test Example (Foliage Processing)
The soil of the upland fields was placed in pots with a capacity of 1/10000 ar and sown with Digiratia sangunalis. When the plants reached the stage of the 4th leaf, they were treated with a small sprayer of a predetermined amount of each herbicidal composition, diluted with water in an amount of 15 l per ar and then mixed with 0.2% (volume) of the determinant (Shin Rino). Fifteen days after the treatment, the wet weight of the aboveground part of the plants was measured. The specified test was carried out at the same time and under the same conditions. The degree of growth inhibition (%) is given in table.5. calculated in accordance with the following formula:
Ste

and

beating =

1 -

× 100

Claims (1)

 A HERBICIDAL COMPOSITION comprising a sulfonylurea derivative and a homoalanin-4-yl- (methyl) phosphinic acid ammonium salt, characterized in that, in order to enhance the herbicidal activity, it contains 1- (4,6-dimethoxypyrimidin-2-yl as a sulfonylurea derivative) ) -3- (3-trifluoromethyl-2-pyridylsulfonyl) urea in a mass ratio of 1: 0.6 - 80.

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