JP4708053B2 - Liquid mixture for weeding - Google Patents

Description

  The present invention relates to a herbicidal mixed solution and the like.

Regardless of farmland or non-agricultural land, the growth of weeds has led to a decrease in the production of agricultural products and a deterioration of the living environment. As these measures, herbicides are widely used. Among them, N'-methoxycarbonylsulfanylamide sodium (that is, ashram: hereinafter sometimes referred to as Compound A) is used for soil treatment or foliar treatment of the compound before the weeds emergence to the growing season. Therefore, it is widely used as an active ingredient of a herbicide having a long residual effect.
On the other hand, DL-homoalanin-4-yl (methyl) -phosphinate salts (that is, glufosinate salts: hereinafter also referred to as compound B) are referred to as the compounds. By applying the foliage treatment, signs such as discoloration appear in a few days after chemical treatment, and it has herbicidal activity against a wide variety of plants, and after being dropped on the soil, it is quickly decomposed or adsorbed on the soil, It is widely used as an active ingredient of herbicides with the characteristic that plants can be planted immediately after spraying the drug. And the herbicide which contains the said compound (ammonium salt) as an active ingredient and contains other active ingredients other than the said active ingredient is disclosed (for example, refer patent document 1).

Japanese Patent No. 3293867 (page 3)

  However, in each application, it was difficult to say that fast effect is always provided while maintaining sufficient residual effect under any conditions.

As a result of intensive studies under these circumstances, the present inventors have found that any of the above active ingredients is water-soluble, and when used as a liquid preparation in which the active ingredients are mixed, N′-methoxycarbonylsulfanyl DL-homoalanin-4-yl (methyl) phosphinate with sodium amido (ie, compound A) as the main ingredient in a ratio of 1/1 to 1/20 (preferably a ratio of 1/2 to 1/10) It was found that the addition of the salt (namely, Compound B) provided the rapid effect while maintaining the residual effect, and the amount of dropped drug could be reduced by about 30%. It came.
That is, the present invention
1. As an active ingredient, sodium N′-methoxycarbonylsulfanilamide and DL-homoalanin-4-yl (methyl) phosphinate salt are used in a weight ratio of 1: 1 to 20: 1 (preferably 2: 1 to 10: 1). A mixed solution for herbicidal use (hereinafter sometimes referred to as the present mixed solution);
2. A weeding method characterized by applying an effective amount of the herbicidal mixture solution of the preceding paragraph 1 to weeds or a region where the weeds live (hereinafter sometimes referred to as the method of the present invention);
Etc. are provided.

  According to the present invention, it is possible to provide a herbicidal mixed liquid agent or the like that is imparted with a rapid effect while maintaining a sufficient residual effect.

  Hereinafter, the present invention will be described in detail.

N'-methoxycarbonylsulfanilamide sodium (that is, Compound A), which is one of the active ingredients of the liquid mixture of the present invention, is Farm Chemicals Handbook (issued by Meister Pro Information Resources) (issued by Farm Chemical Handbook (Meister Pro Information Resources) )] The 2002 edition, page c45, The Pesticide Manual, Thirty Edition (published by The British Crop Protection Council) [The Pesticide Manual Alignment Edition (published by the British Crop Protection Council), page 38 of the compound, 2003].
On the other hand, another active ingredient, DL-homoalanin-4-yl (methyl) phosphinate salt (ie, Compound B), is available from Farm Chemicals Handbook (issued by Meister Pro Information Resources) [Farm Chemical Handbook (Meister (Pro Information Resources))] 2002 edition, page c216, The Pesticide Manual, Sartins Edition (published by The British Crop Protection Council) (published by The Pesticide Manual, Thirteenth Edition, 5th edition, 2010) .

  The liquid mixture of the present invention contains, as an active ingredient, N′-methoxycarbonylsulfanilamide sodium (ie, compound A) and DL-homoalanin-4-yl (methyl) phosphinate salt (ie, compound B) in a weight ratio of 1 : It is characterized by containing in the ratio of 1-20: 1. The mixing ratio may vary depending on the target weed species, application scene, application conditions, and the like within the range, but it may be contained in a range of 2: 1 to 10: 1. Thus, the liquid mixture of the present invention contains N′-methoxycarbonylsulfanilamide sodium (that is, compound A) as a main ingredient, and a ratio of 1/1 to 1/20 (preferably 1/2 to 1/10). A mixture solution for herbicidal use in which a salt of DL-homoalanin-4-yl (methyl) phosphinate (that is, compound B) is added at a ratio of In addition, both compound A and compound B are water-soluble, and when mixed at an incorrect mixing ratio, there is a property that both active ingredients are precipitated. It is possible to suppress the property of sedimentation. In particular, the mixing ratio of compound A to compound B is preferably less than 1.

  The present invention also includes a weeding method characterized by applying an effective amount of the mixed solution of the present invention to weeds or areas where the weeds live.

  The mixed solution of the present invention has herbicidal activity against a wide range of weeds, crop fields where normal tillage cultivation is performed, no-tillage cultivation, orchard fields such as orchards and playgrounds, vacant land, forest land, track ends, Since it exhibits excellent herbicidal activity even on non-agricultural land such as road edges and industrial land, it is excellent as a herbicide. The mixed solution of the present invention is effective in controlling a wide range of weeds that occur in orchards. The mixed solution of the present invention is also effective in controlling a wide range of weeds that develop in soybean and corn fields from winter to spring, before sowing.

The mixed solution of the present invention has herbicidal activity against the following various weeds which are problematic in orchards, soybeans and corn fields, non-agricultural land, and the like.
Red-tailed weeds: Oenothera erythrosepala, Oenothera biennis, Oenothera lacinia
Buttercup weeds: Ranunculus muricatus, Ranunculus sardous
Polygonaceae weeds: wild buckwheat (Polygonum convolvulus), Sanaetade (Polygonum lapathifolium), the United States smartweed (Polygonum pensylvanicum), Harutade (Polygonum persicaria), Japanese knotweed (Polygonum cuspidatum), Polygonum aviculare (Polygonum aviculare), Nagabagishigishi (Rumex crispus), broadleaf dock ( Rumex obtusifolius), Rumex acetosella
Physalis Weed: Physalis (Portulaca oleracea)
Weeping weeds: Stellaria media, Dutch ceramum (Cerastium glomeratum)
Rubiaceae weeds: Shiroza (Chenopodium album), Butterflies (Kochia scoparia)
Amaranthus retroflexus, Amaranthus hybridus, Amaranthus palmuris, Amaranthus tuberculus, Amaranthus tuberculus
Brassicaceae weeds: Wild radish (Raphanus raphanistrum), Noragarashi (Sinapis arvensis), Nazuna (Capsella bursa-pastoris), Lepidium virginicum
Leguminous weeds: Sesbania exaltata, Cassia obtusifolia, Florida bega-weed (Desmodium toruosum), White clover (Trifolium repens)
Poppy family weeds: Papaver rheaas
Mallow family weeds: Abutilon theophrasti, American deer (Sida spinosa), Ginseng (Hibiscus trionum)
Violet weeds: Field pansies (Viola arvensis), Wild pansies (Viola tricolor)
Rubiaceae weeds: Galium aline
Convolvulaceae weeds: American morning glory (Ipomoea hederacea), Ipomoea purpurea (Ipomoea purpurea), tall American morning glory (Ipomoea hederacea var integriuscula), beans morning glory (Ipomoea lacunosa), field bindweed (Convolvulus arvensis), Hirohahirugao (Calystegia sepium)
Lamiaceae weeds: Lamium purpureum, Lameum amplexicaule
Solanum weeds: Dura stramonium, Solanum nigrum, Solanum carolinense
Weeping weeds: Veronica persica, Veronica arvensis, Veronica hederaefolia
Asteraceae weeds: cocklebur (Xanthium strumarium), wild sunflower (Helianthus annuus), chamomile (Matricaria chamomilla), Inukamitsure (Matricaria perforata or inodora), Koshikagiku (Matricaria matricarioides), co - Nmari - Gore - field (Chrysanthemum segetum), ragweed (Ambrosia artemisifolia), Obraxia trifidida, Eigeron canadensis, Artemisia princeps, Soda hawk Solidago gigantea), Japanese dandelion (Taraxacum officinalale), Novorogiku (Senecio vulgaris), Japanese red-eye (Galinosa giliata)
Purple weeds: Forget-me-nots (Myosotis scorpioides), Nohara Murasaki (Myosotis arvensis)
Aspergillus family weeds: Asclepias syria
Euphorbia weeds: Euphorbia helioscopia, Euphorbia maculata
Auricularia weeds: Geranium carolinianum
Oxalis corymbosa (Oxalis corymbosa)
Cucurbitaceae weeds: Areciuri (Sicios angulatus)
Gramineae weeds: Echinochloa crus-galli, Enocorogusa (Setaria viridis), Aquinoeurousu (Essiaiaururi), Eurasian burrows (Digariaia sanginalis), Oshiba (Avena fatua), Silky bentgrass (Apera spica-venti), Sorghum harpense, Agropyron repens, Bromus tectorum, Nigeria cyno Millet (Panicum dichotomiflorum), Texas panicum (Panicum texanum), Shata cane (Sorghum vulgare), Narcobier (Eriochloa villosa), Amaranthus genus (Alopecurus)
Weeping weeds: Commelina communis, Commelina benghalensis
Horsetail Weeds: Horsetail (Equisetum arvense)
Cyperaceae weeds: Cyperus iria, Cyperus rotundus, Cyperus esculentus
In addition, the compound of the present invention has herbicidal activity against various weeds that cause the following problems in the flooding treatment of paddy fields.
Gramineae weeds: Echinochloa oryzicola
Weeping Weeds: Azena (Lindernia procumbens), American Azena (Lindernia dubia)
Mishagi family weeds: Rotala indica, Himmisa multiflora, Hosobahumi misohagi (Ammania coccinea)
Weeping weeds: Elatine triandra
Sedge weeds: smallflower umbrellaplant (Cyperus difformis), bulrush (. Scirpus juncoides subsp hotarui), Scirpus (. Scirpus juncoides subsp juncoides), Eleocharis acicularis (Eleocharis acicularis), Cyperus (Cyperus serotinus), water chestnut (Eleocharis kuroguwai)
Weeping moss: weeping (Monochoria vaginalis)
Omodaka Weeds: Urikawa (Sagitaria pygmaea), Omodaka (Sagitaria trifolia), Heramodaka (Alisma canaliculatum)
Weevil Weed: Potagoton distinctus
Cyprinaceae weeds: Seri (Oenanthe javanica)

In the mixed solution of the present invention, compound A and compound B are generally contained in a total amount of 0.5 to 90% by weight, preferably 5 to 80% by weight.
An example of the liquid carrier used for formulation is water.
Other formulation adjuvants include, for example, casein, gelatin, polysaccharides (starch, gum arabic, cellulose derivatives, alginic acid, etc.), lignin derivatives, bentonite, synthetic water-soluble polymers (polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylic acid). And the like, PAP (isopropyl acid phosphate), BHT (2,6-tert-butyl-4-methylphenol), BHA (2- / 3-tert-butyl-4-methoxyphenol) , Stabilizers such as vegetable oils, mineral oils, fatty acids, fatty acid esters, and auxiliary solvents.

The liquid mixture of the present invention can also be prepared by compounding compound A and compound B, which are active ingredients, according to a conventional formulation technique, and then mixing them. The mixed solution of the present invention is sprayed on soil or plant stems and leaves as it is or diluted with water or the like. The mixed liquid preparation of the present invention can be expected to enhance herbicidal efficacy by mixing with other herbicides, and further, insecticides, fungicides, plant growth regulators, fertilizers, safeners, and soil improvement It can also be used in combination with an agent.
The application amount of the mixed solution of the present invention may vary depending on the mixing ratio of the active ingredient compound A and compound B, meteorological conditions, formulation form, application time, application method, application place, control target weed, target crop, The total amount of active ingredient compounds per hectare is usually 1 g to 5000 g, preferably 5 g to 2000 g. The predetermined amount is diluted with 100 to 1000 liters of water per hectare and applied. In addition, when the mixed solution of the present invention is treated with foliage on weeds, an adjuvant can be further added to the diluted water of the mixed solution of the present invention to enhance the efficacy against weeds.
Further, in the present invention, excellent weeding can be achieved by treating the weeds with an effective amount in combination with Compound A and Compound B, which are active ingredients, according to the use amount, use form, etc. of the present invention. It can be effective.

  Examples of formulation examples and test examples will be given below to further illustrate the present invention.

Formulation Example 1
Compound A 37% solution 64.9 g, compound B (glufocine-ammonium salt) 50% solution, (a) 4.8 g, (b) 6.0 g, (c) 8.0 g, (d) 12.0 g And (e) 24.0 g of each amount was added. Next, by adding 5.0 g of lauryltrimethylammonium chloride (Co-Tamine 24P: manufactured by Kao Corporation), which is a cationic surfactant, and water as a surfactant to prepare a total weight of 100 g, the mixture is stirred and mixed. A mixed solution for herbicidal use was prepared.

Formulation Example 2
Compound A 37% solution 64.9 g, compound B (glufocine-ammonium salt) 50% solution, (a) 4.8 g, (b) 6.0 g, (c) 8.0 g, (d) 12.0 g And (e) 24.0 g of each amount was added. Next, 8.0 g of lauric dimethylamine oxide (Amphitol 20N: manufactured by Kao Co., Ltd.), which is a cationic surfactant, and water are added as a surfactant to prepare a total weight of 100 g, and then the mixture is stirred and mixed. A mixed solution for herbicidal use was prepared.

Test example 1 (pot test)
The pot test was conducted under the following test conditions.
Test period: March 8 to 29, 2001 Test place: Nippon Green & Garden Co., Ltd. Tsukuba Branch Indoor Glass Chamber Test Plant: Mehishiba Leaf age 5-6, plant height 20-25cm
Enokorogusa Leaf age 4.5-6 Plant height 25-35cm, Aubiyu Leaf age 4-5 Plant height 6-12cm, Onamomi Leaf age 5-6 Plant height 15-25cm,
Test scale: 180 cm ² pot, 2 repeated drug treatment days: March 8, 2001 Test method: Five liquid solutions prepared by the above formulation examples, and each liquid marketed as a control, in an amount of 0. The amount corresponding to 5 ml and 1.0 ml was diluted with water and sprayed at 200 ml per square meter.
Investigation date: March 12, 2001, March 29 Evaluation was carried out by visual observation in 11 stages of 0: no weeding effect to 10: complete killing. The test results are shown in Tables 1 and 2 (left column: 4 days after treatment, right column: 21 days after treatment).

Test example 2 (field test)
The field test was conducted under the following test conditions.
Test place: Kanto Railway Shimotsuma Line Test Plant: Aubiyu 20-30cm, Artemisia 15-30cm, Horsetail 15-25cm, Barnyard 15-25cm, Enokorogusa 10-20cm
Test scale: 10 m ² / zone, 2 repeated drug treatment days: May 13, 2002 Test method: Five liquid preparations prepared by the above formulation examples, and each liquid preparation marketed as a control, 0 per square meter An amount corresponding to 0.5 ml and 1.0 ml was diluted with water and sprayed at 200 ml per square meter.
Investigation date: May 20, 2002, June 24, 2002 Evaluation was carried out by visual observation in 11 stages of 0: no herbicidal effect to 10: complete killing. The test results are shown in Tables 3 and 4 (left column: 7 days after treatment, right column: 42 days after treatment).

  As is clear from the above test examples, when the mixing ratio of compound A to compound B is from 1/2 to 1/10, the tested mixed liquid agent imparts rapid action while maintaining the residual effect. In addition, it was confirmed that the amount of drug dropped can be reduced by about 30%.

According to the present invention, it is possible to provide a herbicidal mixed solution or the like to which quick effect is imparted while maintaining sufficient residual effect.

Claims (2)

  It contains N'-methoxycarbonylsulfanilamide sodium and DL-homoalanin-4-yl (methyl) phosphinate salt as active ingredients in a weight ratio of 1: 1 to 20: 1. Liquid mixture. A weeding method comprising applying an effective amount of the herbicidal mixed solution according to claim 1 to weeds or a region where the weeds live.