JPS63104904A - Herbicide composition - Google Patents

Abstract

PURPOSE:To produce a herbicidal composition capable of extremely controlling a wide range of weeds growing in agricultural lands and nonagricultural lands, showing wider herbicidal spectrum with a small amount by synergistic action compared with separative use of each component comprising a specific compound, bialaphos, etc., as active ingredients. CONSTITUTION:A herbicidal composition comprising 3-chloro-2-(4-2-fluoro-5- propargyloxyphenyl)-4,5,6,7-tetrah-ydro-2H-indazole shown by formula I and bialaphos [=(2-amino-4-methylphosphinobutyryl)alanylalanine) shown by formula II or a salt thereof or DL-homoalanin-4-yl(methyl)phosphinic acid shown by the formula II or a salt thereof as active ingredients. The blending ratio is 0.2-100pts.wt. compound shown by formula II, etc., based on 1pt.wt. compound shown by containing I and the active ingredients are mixed with a carrier and an auxiliary, prepared into emulsion, wettable powder, etc., and applied. An application amount is 1-100g/a sum of the active ingredients.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides 8-chloro-2-(4-chloro-2-fluoro-5-propargyloxyphenyl)-4,5,6,
7-tetrahydro-2H-indazole (hereinafter referred to as compound [1). ) and (2-amino-4-methylphosphinobutyryl)alanylalanine or its salt (hereinafter referred to as bialaphos) or DL-homoalanine-4
-yl(methyl)phosphinic acid or its salt (hereinafter referred to as
It is written as glufosinate. ) as an active ingredient (hereinafter referred to as the composition of the present invention).

Currently, a large number of herbicides are used for agricultural and non-agricultural land, but since there are many types of weeds to control and the growth period is long, the herbicides are more effective and can be used to control a wide range of weeds. The development of herbicides with a spectrum is desired.

The inventors of the present invention have developed an emasculating agent that meets these objectives (as a result of various studies, it has been found that the composition of the present invention containing the compound (4) and bialaphos or glufosinate as active ingredients is suitable for agricultural land or It has been discovered that it controls a wide range of weeds that occur in non-agricultural land, has a synergistic herbicidal effect compared to when used alone, can be applied at low dosages, and has an expanded herbicidal spectrum. , completed the invention.

Weeds that can be controlled by the composition of the present invention include: freckles, Japanese knotweed, Japanese grass, purslane, chickweed, whiteweed, Japanese radish, Japanese radish, Japanese radish, shepherd's purse, American hornwort, Ebisu grass, Japanese commonweed, American golden deer, field pansy, Japanese violet, and American morning glory. , broad-leaved weeds such as Marupa morning glory, St. bindweed, Hemlockweed, Hotokenoza, White banana 1 Hemlock, Physalis occidentalis, Psyllium japonica, Japanese fir tree, sunflower, Japanese chamomile, corn marigold, mugwort, etc., barnyard grass, Japanese millet, foxtail grass, Japanese grasshopper, Psyllium annuus, Prunus japonicum, Oat Examples include weeds of the Poaceae family, such as oats, Seiban sorghum, grasshoppers, Japanese sorghum, Cyperaceae, Cyperaceae weeds such as Cyperaceae, Cyperaceae such as Cyperus japonica, and Cyperaceae.

Compound [■] (Japanese Unexamined Patent Publication No. 59-84872) has a herbicidal effect, and also has bialaphos (see Tetsuo Takematsu, Herbicide Research Directory, p. 611 (1982), etc.) and glufosine) (C,R, Worthing.

The Pe5ticide Manual 7th Edition No. 8
02 (1988) etc.] is known as a herbicide.

The mixing ratio of compound [1), which is an active ingredient of the composition of the present invention, and bialaphos or glufosinate can be varied within a relatively wide range, but usually compound (1) 1. [
Bialaphos or glufosinate is 0.2 to 1 part
~100 east ffi part, preferably 0.4~70!
! This is part 1.

The chemical structural formulas of Compound [I], bialaphos and glufosinate are shown in Table 1.

Table 1 In addition, (2-amino-4-methylphosphinobutyryl)
Examples of salts of alanylalanine include sodium salts, and examples of salts of DL-homoalanin-4-yl(methyl)phosphinic acid include ammonium salts.

When the composition of the present invention is used as a herbicide, it is usually mixed with a solid carrier, a liquid carrier, a surfactant, and other formulation auxiliaries to formulate an emulsion, wettable powder, suspension, or the like.

These preparations contain the compound of the present invention as an active ingredient in a weight ratio of 1 to 90%, preferably 2 to 80%.

Examples of solid carriers include fine powders or granules such as kaolin clay, attapulgite clay, bentonite, acid clay, pyrophyllite, talc, diatomaceous earth, calcite, walnut powder, urea, ammonium sulfate, and synthetic hydrous oxidation systems. Liquid carriers include aromatic hydrocarbons such as xylene and methylnaphthalene, alcohols such as isopropanol, ethylene glycol, and cellosolve, ketones such as acetone, cyclohexanone, and isophorone, vegetable oils such as soybean oil and cottonseed oil, and dimethyl sulfoxide. , acetonitrile, water, etc.

Surfactants used for emulsification, dispersion, wetting layers, etc. include anionic surfactants such as alkyl sulfate salts, alkylaryl sulfonates, dialkyl sulfosuccinates, and polyoxyethylene alkylaryl ether phosphate salts. agent, polyoxyethylene alkyl ether, polyoxyethylene alkylaryl ether,
Examples include nonionic surfactants such as polyoxyethylene polyoxypropylene block copolymers, sorbitan fatty acid esters, and polyoxyethylene sorbitan fatty acid esters. Other formulation adjuvants include lignin sulfonate, alginate, polyvinyl alcohol, gum arabic, CMC (carboxymethyl cellulose), PAP (isopropyl acid phosphate), and the like.

Examples of formulations are shown below. Note that part 1 shows the M-receiving part.

Formulation Example 1 25 parts of compound (I), 25 parts of bialaphos, 8 parts of calcium lignosulfonate, 2 parts of sodium lauryl sulfate, and 45 parts of synthetic hydrous silicon oxide are thoroughly ground and mixed to obtain a wettable powder.

Formulation Example 2 Compound (1) 10 = 6s Bialaphos or Glufosinate 15m5 8 parts of polyoxyethylene sorbitan monooleate, CMCa part, and 69 parts of water were mixed and wet-pulverized until the particle size became 5 microns or less to form a suspension. obtain.

Formulation Example 8 25 parts of Compound (1), 25 parts of glyfolanate, 8 parts of calcium lignosulfonate, 2 parts of sodium lauryl sulfate, and 45 parts of synthetic hydrous silicon oxide are thoroughly ground and mixed to obtain a wettable powder.

The composition of the present invention prepared in this manner is applied to the foliage of weeds after they emerge.

Furthermore, by mixing it with other herbicides, it can be expected to increase the herbicidal efficacy. Furthermore, it can also be used in combination with insecticides, acaricides, nematicides, fungicides, plant growth regulators, and the like.

The composition of the present invention can be used as a herbicide for fields, fallow fields, orchards, pastures, lawns, forests, non-agricultural lands, and the like.

The application amount of the composition of the present invention depends on the mixing ratio of the active ingredients, the formulation form,
Although it varies depending on the type of target weed, weather conditions, etc., the total amount of active ingredients per are is usually 12 to 100 F, preferably 22 to 60 F, and emulsions, wettable powders, suspensions, etc. The amount is 1 liter to 10 liters per are (if necessary, auxiliary agents such as a spreading agent are added)
Dilute with water and process.

In addition to the above-mentioned surfactants, the spreading agents include polyoxyethylene resin acid (ester), lignin sulfonate,
Examples include abietate, dinaphthylmethane disulfonate, and paraffin.

Next, test examples will be given to specifically demonstrate the herbicidal efficacy of the composition of the present invention.

The herbicidal efficacy is expressed as the growth suppression rate ←) calculated by the following formula by measuring the production of the above-ground parts of the test plants that remained dead at the time of the survey.

Growth inhibition rate (in) - Test Example 1 Field soil stem and leaf treatment test Inner diameter 16cm1. A Wagner hole with a depth of 19 a1 was filled with upland soil, and one sycamore or sycamore was planted in a box and grown for 85 days. Thereafter, make the test material into a hydrating powder according to Formulation Example 1 or Formulation Example 8, dilute the specified amount with water containing a spreading agent equivalent to 5 liters per are, and use a small sprayer to spray it onto the top of the plant body. The whole surface of the stems and leaves was treated uniformly. At this time, the growth status of Sparrow vulgare is in the 6-7 leaf stage, and the plant height is 20-80 cm.
Met. The herbicidal efficacy was investigated 20 days after the treatment.

The results are shown in Tables 2 and 8. This test was conducted in a greenhouse throughout the entire period.

Tables 2 and 8 The results of Tables 2 and 8 were calculated using the isoeffect line method [Fukami order - 1 Yasuhiko Uesugi, Kozo Ishizuka, Choji Tomizawa (eds.) Pesticide Experimental Methods Volume 3 Herbicides Edition 1st Edition 109-ILL pages (1981) published by Soft Science Company]. The results are shown in Figure 1.
and shown in FIG. From the figure, it is clear that the composition of the invention has a synergistic effect.

Test example 2 Field soil stem leaf treatment spectrum test area aax2
Pack field soil into a vat of ac4, depth IIcII, and sow goldenberry, foxtail grass, blackberry grass, malpa morning glory, Japanese grasshopper, yellowtail grass, American hornwort, American golden deer, Japanese physalis, Japanese fir tree, sunflower, white locust, and blue sorghum. The rhizomes were transplanted and grown for 85 days.

Thereafter, the sample was made into a hydrating powder according to Formulation Example 1, a predetermined amount of it was diluted with water equivalent to 5 liters per are including a spreading agent, and a small sprayer was applied from above the plant body to the whole surface of the stems and leaves. was uniformly processed. At this time, the growth conditions of weeds and crops vary depending on the grass species, but the 8-8 leaf stage and the plant height are 5-60 cm.
C! ＋de attko. Herbicidal efficacy was investigated 28 days after treatment. The results are shown in Table 4.

This test was conducted in a greenhouse throughout the entire period.

[Brief explanation of the drawing]

FIGS. 1 and 2 are plotted using the isoeffect line method based on the herbicidal efficacy against sycamore and sycamore in Tables 2 and 8 of Test Example 1, respectively. The vertical axis is bialafos or glufosinate drug m (9/a
), and the horizontal axis is the drug of compound [1]! ICP/a) respectively. Moreover, the broken line represents the line of additive effect, and the solid line represents the line of equal effect with a growth inhibition rate of 90%. 0 0.5 1.0 1.
5 Compound CI) active ingredient amount (r/a) Figure 1

Claims (1)

[Claims] 3-chloro-2-(4-chloro-2-fluoro-5-propargyloxyphenyl)-4,5,6,7-tetrahydro-2H-indazole and (2-amino-4-methylphosphinobutyryl) 1. A herbicidal composition comprising alanylalanine or a salt thereof, or DL-homoalanin-4-yl(methyl)phosphinic acid or a salt thereof as an active ingredient.