JP2006306730A - Herbicide composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology, etc., for controlling a wide range of weeds, having a higher herbicide effect and without causing a problem of phytotoxicity against crops. <P>SOLUTION: This herbicide composition for controlling the weeds in a tree plantation or non-agricultural land contains as active ingredients; (a) N-(7-fluoro-3,4-dihydro-3-oxo-4-prop-2-ynyl-2H-1,4-benzoxazin-6-yl)cyclohehex-1-ene-1,2-dicarboxamide and (b) 1-(4,6-dimethoxypyrimidin-2-yl)-3-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-ylsulfonyl)urea, and also has (1:0.1-10) mixing ratio of them [the weight ratio of the active ingredient (a) to the active ingredient (b)]. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a herbicidal composition and the like.

  Currently, many herbicides are commercially available and used (see, for example, Non-Patent Document 1). However, there are many types of weeds to be controlled, and the generation is long-lasting, so the herbicidal effect is higher and wider. There is a need for herbicides that have a herbicidal spectrum, have long-lasting effects, and do not cause phytotoxicity problems on crops.

Crop Protection Handbook 2003 (Crop Protection Handbook, Vol. 89 (2003), Meister Publishing Company, ISBN: 1-892829-06-1)

  An object of the present invention is to provide a technique for controlling a wide range of weeds, which has a higher herbicidal effect and does not cause a problem of phytotoxicity to crops.

As a result of intensive studies under these circumstances, the present inventors have reached the present invention.
That is, the present invention
1. A herbicidal composition for controlling weeds in an orchard or non-agricultural land, and (a) N- (7-fluoro-3,4-dihydro-3-oxo-4-prop-2-ynyl) as an active ingredient -2H-1,4-benzoxazin-6-yl) cyclohex-1-ene-1,2-dicarboxamide and (b) 1- (4,6-dimethoxypyrimidin-2-yl) -3- (2 -Ethylsulfonylimidazo [1,2-a] pyridin-3-ylsulfonyl) urea and the mixing ratio (weight ratio of active ingredient (a) to active ingredient (b)) is 1: 0 A herbicidal composition characterized by being 1 to 10 (hereinafter sometimes referred to as the present composition);
2. A method for controlling weeds in an orchard or a non-agricultural land, wherein the herbicidal composition according to claim 1, or simultaneously or in combination (a) N- (7-fluoro-3,4-dihydro-3- Oxo-4-prop-2-ynyl-2H-1,4-benzoxazin-6-yl) cyclohex-1-ene-1,2-dicarboxamide and (b) 1- (4,6-dimethoxypyrimidine- 2-yl) -3- (2-ethylsulfonylimidazo [1,2-a] pyridin-3-ylsulfonyl) urea mixing ratio (weight ratio of active ingredient (a) to active ingredient (b)) A method characterized by applying a combination of 1: 0.1 to 10 to soil or weeds where weeds grow or grow (hereinafter sometimes referred to as the method of the present invention);
3. (A) N- (7-fluoro-3,4-dihydro-3-oxo-4-prop-2-ynyl) as an active ingredient of a herbicidal composition for controlling weeds in an orchard or non-agricultural land -2H-1,4-benzoxazin-6-yl) cyclohex-1-ene-1,2-dicarboxamide and (b) 1- (4,6-dimethoxypyrimidin-2-yl) -3- (2 -The mixing ratio (weight ratio of an active ingredient (a) and an active ingredient (b)) with 1: ethyl sulfonyl imidazo [1, 2-a] pyridin-3-yl sulfonyl) urea is 1: 0.1-10. Use of a combination (hereinafter sometimes referred to as use of the present invention);
Etc. are provided.

  According to the present invention, it can be applied at a low dosage in an orchard or a non-agricultural land, and a wide range of weeds can be controlled.

N- (7-fluoro-3,4-dihydro-3-oxo-4-prop-2-ynyl-2H-1,4-benzoxazin-6-yl) cyclohex- used as an active ingredient in the composition of the present invention 1-ene-1,2-dicarboxamide (generic name flumioxazine, hereinafter also referred to as flumioxazine) is a crop protection handbook 2003 (Crop Protection Handbook, Vol. 89 (2003), Meister Publishing Company, ISBN: 1-892829-06-1) Herbicidal active compound described on page C236.
1- (4,6-Dimethoxypyrimidin-2-yl) -3- (2-ethylsulfonylimidazo [1,2-a] pyridin-3-ylsulfonyl) urea (general) used as an active ingredient in the composition of the present invention The name sulfosulfuron (hereinafter also referred to as sulfosulfuron) is Crop Protection Handbook 2003 (Crop Protection Handbook, Vol. 89 (2003), Meister Publishing Company, ISBN: 1-892829-06-1), page C434. Are herbicidal active compounds.

  The composition of the present invention has herbicidal activity against a wide range of weeds, can effectively control a wide range of weeds in orchards and non-agricultural lands, and causes phytotoxicity that causes problems for useful plants. Absent.

  As an orchard in the present invention, apple, Japanese pear, pear, peach, plum, nectarine, ume, sweet potato, chestnut, oyster, fig, grape, loquat, citrus, etc. Gardens, banana gardens, palm gardens, flower gardens, flower gardens, seedling fields, nurseries, forest land, gardens, etc. Examples of the non-agricultural land in the present invention include a playground, a vacant land, a track end, a park, a parking lot, a road end, a riverbed, a transmission line, a residential land, and a factory site.

Examples of weeds that can be controlled with the composition of the present invention include the following.
Polygonaceae weeds: wild buckwheat (Polygonum convolvulus), Sanaetade (Polygonum lapathifolium), the United States smartweed (Polygonum pensylvanicum), Harutade (Polygonum persicaria), Nagabagishigishi (Rumex crispus), broadleaf dock (Rumex obtusifolius), Japanese knotweed (Polygonum cuspidatum)
Physalis Weed: Physalis (Portulaca oleracea)
Dianthus weeds: Stellaria media
Rubiaceae weeds: Shiroza (Chenopodium album), Butterflies (Kochia scoparia)
Amaranthus weed: Amaranthus retroflexus, Amaranthus hybridus
Brassicaceae weeds: Wild radish (Raphanus raphanistrum), Noragarashi (Sinapis arvensis), Nazuna (Capsella bursa-pastoris)
Legume weeds: Sesbania exaltata, Cassia obtusifolia, Florida vega-weed (Desmodium torteusum), Trifolium repens
Mallow Weeds: Abutilon theophrasti, American deer (Sida spinosa)
Violet weeds: Field pansies (Viola arvensis), Wild pansies (Viola tricolor)
Rubiaceae weeds: Galium aline
Convolvulaceae weeds: American morning glory (Ipomoea hederacea), Marva morning glory (Ipomoea purpure), Malva American morning glory (Ipomoea hederacea var agula sulaun)
Lamiaceae weeds: Lamium purpureum, Lameum amplexicaule
Solanum weeds: Datura stramonium, Solanum nigrum
Weeping weeds: Veronica persica, Veronica hederaefolia
Asteraceae weeds: cocklebur (Xanthium pensylvanicum), wild sunflower (Helianthus annuus), Inukamitsure (Matricaria inodora), co - Nmari - Gore - field (Chrysanthemum segetum), Oroshagiku (Matricaria matricarioides), ragweed (Ambrosia artemisiifolia), Ambrosia trifida (Ambrosia trifida), Erigeron canadensis, Artemisia Princes, Solidago altissima
Purple weeds: Forget-me-nots (Myosotis arvensis)
Aspergillus family weeds: Asclepias syria
Euphorbia weeds: Euphorbia helioscopia, Euphorbia maculata
Gramineae weeds: Echinochloa crus-galli, Enocorogusa (Setaria viridis), Aquinoeurousu (Essiaiaururi), Eurasian burrows (Digariaia sanginalis), Oshiba (Avena fatua), Seiban sorghum (Sorghum halopense), Shibamugi (Agropyron repens), Umanohachiki (Bromus tectorum), Gyogishiba (Cynodone dactylum), Pokke Panicum texanum, Shatham vulgare, Lolium multiflorum
Weeping weeds: Commelina communis, Commelina bengharensis
Horsetail Weeds: Horsetail (Equisetum arvense)
Cyperaceae weeds: Cyperus iria, Cyperus rotundus, Cyperus esculentus

  In the composition of the present invention, the mixing ratio of flumioxazin and sulfosulfuron used as active ingredients is in the range of about 1: 0.1 to 10, more preferably about 1: 0.2 to 5.

  The composition of the present invention is usually mixed with a solid carrier, a liquid carrier, etc., and if necessary, a surfactant, other formulation adjuvants, etc. are added to emulsions, wettable powders, suspensions, granules, etc. It is good to use it after formulating. In these preparations, the total amount of flumioxazin and sulfosulfuron is generally about 0.1 to 90% by weight, preferably about 1 to 80% by weight.

  In formulating the composition of the present invention, examples of solid carriers used include clays (kaolinite, diatomaceous earth, synthetic silicon hydroxide, fubasami clay, bentonite, acidic clay), talc, and other inorganic minerals (sericite, Quartz powder, sulfur powder, activated carbon, calcium carbonate, etc.) Fine powders and granular materials such as chemical fertilizers (ammonium sulfate, phosphorous acid, ammonium nitrate, ammonium chloride, urea, etc.) can be mentioned. Examples of liquid carriers include water, alcohols ( Methanol, ethanol, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.), aromatic hydrocarbons (toluene, xylene, ethylbenzene, methylnaphthalene, etc.), non-aromatic hydrocarbons (hexane, cyclohexane, kerosene, etc.), esters (Ethyl acetate, butyl acetate, etc.), nitriles (acetonitrile, isobutyronitrile) Etc.), ethers (dioxane, diisopropyl ether), acid amides (dimethylformamide, dimethylacetamide), halogenated hydrocarbons (dichloroethane, trichlorethylene, etc.) and the like.

The composition of the present invention can be prepared by formulating each active ingredient by the above-described formulation technique and then mixing them.
The composition of the present invention thus formulated may be sprayed as it is, or after diluting with water or the like to form a diluted solution, it may be sprayed on soil or plants. The composition of the present invention can be further expected to enhance herbicidal efficacy by mixing with other herbicides, and further, insecticides, fungicides, plant growth regulators, fertilizers, safeners, and soil improvements It can also be used in combination with an agent.

  The application amount of the composition of the present invention may vary depending on the mixing ratio of flumioxazin and sulfosulfuron, which are active ingredients, weather conditions, formulation form, application time, application method, application location, weeds to be controlled, target crops, The total amount of active ingredient compounds per hectare is usually about 1 to 1000 g. Emulsions, wettable powders, suspensions and the like are applied by diluting a predetermined amount with water of usually about 100 to 2000 liters per hectare. Further, when the composition of the present invention is treated with foliage on weeds, an adjuvant can be added to the diluted solution of the composition of the present invention to enhance the efficacy against weeds.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

Formulation examples are shown below. In the following examples, parts represent parts by weight.
Formulation Example 1
A wettable powder is obtained by thoroughly pulverizing and mixing 25 parts of flumioxazin, 25 parts of sulfosulfuron, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 45 parts of synthetic silicon hydroxide.
Formulation Example 2
70 parts of flumioxazin, 14 parts of sulfosulfuron, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 11 parts of synthetic silicon hydroxide are thoroughly pulverized and mixed to obtain a wettable powder.

Formulation Example 3
14 parts of flumioxazin, 70 parts of sulfosulfuron, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 11 parts of synthetic silicon hydroxide are thoroughly pulverized and mixed to obtain a wettable powder.
Formulation Example 4
A wettable powder is obtained by thoroughly pulverizing and mixing 10 parts of flumioxazin, 5 parts of sulfosulfuron, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 80 parts of hydrous silicon oxide.

Formulation Example 5
20 parts of flumioxazin, 20 parts of sulfosulfuron, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethylcellulose) and 54 parts of water are mixed and suspended by wet grinding until the particle size is 5 microns or less. Get the agent.
Formulation Example 6
50 parts of flumioxazin, 10 parts of sulfosulfuron, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethylcellulose) and 34 parts of water are mixed and suspended by wet grinding until the particle size is 5 microns or less. Get the agent.

Formulation Example 7
Mix 5 parts of flumioxazin, 25 parts of sulfosulfuron, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethylcellulose) and 64 parts of water and suspend by wet grinding until the particle size is 5 microns or less. Get the agent.
Formulation Example 8
Mix 4 parts of flumioxazin, 2 parts of sulfosulfuron, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethylcellulose) and 88 parts of water and wet pulverize until the particle size is 5 microns or less. Get the agent.

Examples of biological tests are shown below.
Evaluation criteria The evaluation of herbicidal efficacy is 0 when the growth state of the test weeds at the time of the survey is completely different from that of the untreated ones, and the test plants are completely dead or completely inhibited from growing. This is classified as “5” and is divided into 6 levels of 0 to 5 and indicated by “0”, “1”, “2”, “3”, “4”, “5”. Evaluation values “4” and “5” of herbicidal efficacy indicate excellent herbicidal efficacy.

Test Example 1 (Soil treatment test)
Upland field soil was packed in a plastic pot having a diameter of 22 cm and a height of 19 cm, and sowed with wheat and black grass. A predetermined amount of each of a mixture of a flumioxazin preparation (trade name ValorSX, manufactured by Berant USA), a sulfosulfuron preparation (trade name Monitor, manufactured by Monsanto) and a mixture of the flumioxazin preparation and the sulfosulfuron preparation is water. And then sprayed uniformly on the soil surface with a small sprayer. After treatment, the plants were grown in a greenhouse, and the weeding effect on weeds was examined on the 34th day. The results are shown in Table 1.

Test Example 2 (Stem and Leaf Treatment Test)
The field soil was packed in a plastic pot having a diameter of 12 cm and a height of 8 cm, transplanted from the field, and was grown in a greenhouse for 31 days. A predetermined amount of each of a mixture of a flumioxazin preparation (trade name ValorSX: manufactured by Berant USA), a sulfosulfuron preparation (trade name Monitor: manufactured by Monsanto) and a mixture of the flumioxazin preparation and the sulfosulfuron preparation is water. Diluted with a small sprayer and sprayed uniformly from above the plant body. The plants were grown in a greenhouse for 29 days after the treatment and examined for herbicidal efficacy. The results are shown in Table 2.

  As shown in the above test examples, in both the soil treatment test and the foliage treatment test, the treatment group of the composition of the present invention has superior herbicidal efficacy as compared to the flumioxazin single use group or the sulfosulfuron single use group. was gotten.

  In addition, the composition of the present invention was used in an orchard where apples, Japanese pears, peaches, oysters, grapes, citrus, etc. were cultivated, and the occurrence of phytotoxicity was examined, but no phytotoxicity was observed in any tree species. It was.

According to the present invention, it can be applied at a low dosage in an orchard or a non-agricultural land, and a wide range of weeds can be controlled.

Claims (3)

  A herbicidal composition for controlling weeds in an orchard or non-agricultural land, and (a) N- (7-fluoro-3,4-dihydro-3-oxo-4-prop-2-ynyl) as an active ingredient -2H-1,4-benzoxazin-6-yl) cyclohex-1-ene-1,2-dicarboxamide and (b) 1- (4,6-dimethoxypyrimidin-2-yl) -3- (2 -Ethylsulfonylimidazo [1,2-a] pyridin-3-ylsulfonyl) urea and the mixing ratio (weight ratio of active ingredient (a) to active ingredient (b)) is 1: 0 A herbicidal composition characterized by being 1 to 10.   A method for controlling weeds in an orchard or a non-agricultural land, wherein the herbicidal composition according to claim 1, or simultaneously or in combination (a) N- (7-fluoro-3,4-dihydro-3- Oxo-4-prop-2-ynyl-2H-1,4-benzoxazin-6-yl) cyclohex-1-ene-1,2-dicarboxamide and (b) 1- (4,6-dimethoxypyrimidine- 2-yl) -3- (2-ethylsulfonylimidazo [1,2-a] pyridin-3-ylsulfonyl) urea mixing ratio (weight ratio of active ingredient (a) to active ingredient (b)) A method comprising applying a combination of 1: 0.1 to 10 to soil or weed where weed grows or grows. (A) N- (7-fluoro-3,4-dihydro-3-oxo-4-prop-2-ynyl) as an active ingredient of a herbicidal composition for controlling weeds in an orchard or non-agricultural land -2H-1,4-benzoxazin-6-yl) cyclohex-1-ene-1,2-dicarboxamide and (b) 1- (4,6-dimethoxypyrimidin-2-yl) -3- (2 -The mixing ratio (weight ratio of an active ingredient (a) and an active ingredient (b)) with 1: ethyl sulfonyl imidazo [1, 2-a] pyridin-3-yl sulfonyl) urea is 1: 0.1-10. Use of combinations.