JPH01102005A - Herbicidal composition - Google Patents

Abstract

PURPOSE: To obtain a herbicidal composition containing S,S- dimethyl-2-(difluoromethyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-3,5- pyridinecarbodithioate as an active ingredient and to remove Zoysia tenifolia. CONSTITUTION: This herbicidal composition is the one for removing Zoysia tenifolia in the grass and contains S,S-dimethyl-2-(difluoromethyl)-4-(2- methylpropyl)-6-(trifluoromethyl)-3,5-pyridinecarbodithoate as an active ingredient. The composition is used in the form of a liquid (e.g. an emulsion), a solid (e.g. a granule) or a mixed phase of liquid-solid (e.g. a wettable powder, a water- dispersable granule and a microcapsule) and the application amount is 0.14-3.36kg/ha expressed in terms of the active ingredient. The composition can also be used by combining it with manure, other herbicides, agrochemicals, plant growth regulator, mitigator, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to selective pre- and post-emergence lawn herbicides for turmeric and for the pre-emergence control of other weed species. These herbicides contain derivatives of lysine-3.5-dicarboxylic acid.

T-lysine herbicides are known to those skilled in the art. Especially in 1987
U.S. Pat. No. 4,692,184, issued September 8, 2003, discloses gin-3,5-dicarboxylic acid derivatives of the type of the present invention. This US patent is disclosed by reference.

BRIEF DESCRIPTION OF THE INVENTION The object of the present invention is to
and Elausine 1ndica
) and control compositions for controlling weeds such as the following: pre-emergence control methods and compositions for controlling weeds after they have established themselves in a wide range of lawns without substantially damaging the lawn.

Another purpose is to provide a method for pre-emergent control of other turf weeds, including some broadleaf weeds.

These purposes are based on S,S-dimethyl-2-
(difluoromethyl)-4-(2-methylzorobyl)-
6-trifluoromethyl-3,5-pyridine is achieved by using a herbicidal composition containing a ditheoate compound. The compositions may be liquid (eg emulsions), solid (eg granules) or liquid-solid mixed phase (eg aquariums, water-dispersible granules or microcapsules).

DETAILED DESCRIPTION OF THE INVENTION Compounds that are the active ingredients of the present invention are disclosed in U.S. Patent No. 4,692.
．． It can be constructed as shown in Example 146 of the specification of No. 184.

Compositions containing the above compounds can be liquids, solids, or mixed phases of solid and liquid, as described above. The preparation of these compositions is well within the skill of those skilled in the art. The herbicidal compositions of the invention, which contain concentrates which must be diluted before use, can contain active ingredients and auxiliaries in liquid or solid form. The compositions are prepared by mixing the active ingredient with auxiliary agents including diluents, fillers, carriers and anti-caking agents to form finely divided solids, granules, pellets, solutions, dispersions, microcapsules or emulsions. provide a composition of the form. It is contemplated that the active ingredient may be combined with auxiliary agents such as finely divided solids, liquids of organic origin, water, wetting agents, dispersing agents, emulsifying agents or any reasonable combination thereof.

Suitable wetting agents include argylbenzenes and alkylnaphthalene sulfonates, sulfated fatty alcohols, amines or acid amides, long chain acid esters of sodium isothionate, esters of sulfosuccinates, sulfated or sulfonated fatty acid esters, Petroleum sulfonates, sulfonated vegetable oils, ditertiary acetylenic glycols, polyoxyethylene 1) conductors of alkylphenols (especially isooctylphenol and nonylphenol) and hexitol anhydrides (e.g. sorbitan) O%/-
There are polyoxyethylene derivatives of higher fatty acid esters and polyoxyethylene derivatives of castor oil. Preferred dispersants are methylcellulose, polyoxyethylene/polyoxyzoafrene block copolymer, polyvinyl alcohol, lignin sulfonate sodium sulfonate, polymeric alkyl nutumene sulfonate, naphthalene sulfonate sodium sulfonate, and polymethylene visna 7 thalene sulfonate.

Irrigation agents are of water-dispersible mineral origin containing an active ingredient, an inert solid filler C and one or more wetting agents and dispersants. Examples of such fillers are kaolinite, bentonite, atazolgate clay and synthetic magnesium silicates. The wettable powder composition of the present invention typically has a
0 parts (preferably 5-20 parts) of active ingredient, about 0.25
~25 parts (preferably 1 to 15 parts) of a wetting agent, about 0.2
It contains 5 to 25 parts (preferably 1.0 to 15 parts) of dispersant and 5 to about 95 parts (preferably 5 to 50 parts) of inert solid carrier. All parts are by weight of total acid.

If necessary, about 0.1 to 2.0 parts of the solid inert filler can be replaced by a corrosion inhibitor or an antifoam agent or both.

Other formulations include powder concentrates containing from 0.1 to 601% of active ingredient in suitable fillers. These powders are about 0.1
Can be diluted for application to concentrations within the range of ~103 [Ji%.

Aqueous suspensions or emulsions can be prepared by homogenizing a non-aqueous solution of the water-insoluble active ingredient and emulsifier with water and then homogenizing until a finely divided, stable emulsion is obtained. The resulting concentrated aqueous suspension is characterized by very small particles, so that when diluted and sprayed, the nuclide is very homogeneous. Suitable concentrations of active ingredient in these formulations are approximately 0.1-60% by weight of active ingredient.
, preferably from 5 to 50%, with the upper limit determined by the solubility limit of the active ingredient in the solvent.

Concentrates are solutions of the active ingredient in a water-immiscible or partially water-immiscible solvent, usually together with a surfactant.

Suitable solvents for the active ingredients of this invention include dimethylformamide, chlorinated solvents, dimethylsulfonate, N-methyl-pyrrolidone, hydrocarbons and water-immiscible ethers, esters or ketones. However, other high strength concentrates can be prepared by dissolving the active ingredient in a solvent and then diluting, for example with kerosene, to a spray concentration. The concentrated compositions herein generally include about 0.1 to 95 parts (preferably 5 to 60 parts) of active ingredient, about 0.25 to 50 parts (preferably 1 to 25 parts) of surfactant, and if necessary about Contains 4 to 94 parts of solvent. All parts are by weight based on the total weight of the emulsion.

Granules are physically stable granular compositions containing the active ingredient adhered to or distributed within a basic matrix of inert particulate fillers.

Surfactants such as those mentioned above can be included in the composition to avoid leaching of the active ingredient from the granules.

Natural clay, pyrophyllite, illite, gypsum, sand and vermiculite are examples of possible types of particulate mineral fillers. Preferred fillers are porous, absorbent preformed particles such as preformed and screened granular atazorgite or thermally expanded granular vermiculite and finely divided clays such as kaolin clay, hydrated attapulite or bentonite clay. These bulking agents are sprayed onto or mixed with the active ingredient to form herbicide granules.

The granule composition of the present invention is about 0.1 parts per 100 parts of clay.
It can contain up to about 30 parts by weight of active ingredient and 0 to about 5 parts by weight of surfactant per 100 parts by weight of granular clay.

Microencapsulated formulations containing compounds of the invention are disclosed in U.S. Pat.
Advantageously, it is produced using the method disclosed in No. 16. These disclosures are provided by reference only.

The compositions of the invention may also contain other additives, such as fertilizers, other herbicides, pesticides, plant growth regulators, emollients, etc. as auxiliaries or in combination with any of the above auxiliaries.

Chemical agents useful in combination with the active ingredients of the invention are selected depending on the type of weed to be controlled and are usually 2,4-(dichlorophenoloxy)-acetates or esters, 2-methoxy-
Broadleaf-specific herbicides such as 3,6-dichlorobenzoates or esters, or similar herbicides that are non-injurious to lawns.

The compounds of the present invention can also be used in combination with other known moth control agents such as monosodium methane arsonate. Preferably, the application of the active compound of the invention is about 0.14
~3.36 k#/ha, 0.42~1.12 k
Especially about 0.56-0.84kl, like g7ha? /
ha of the active ingredient.

The composition of the present invention can be safely used to control pre-emergent or established Poa
pracensis), Onyx focella (Fe5
T, uca arundinacea), oxtail grass (Fe5zuca rubr&), fine lacquer grass (Fe5t+uca ovina), bentgrass (Agroszispaluszris),
and cool-season grasses such as Loliumperenne and Saint Augustine (8t+
eno caphrum secundacum),
Cynodon dact, y
lon), Eremochloa o
phiuroidea), Zoysiglace
ia Japonica), Bahia grass (Pasp
alum not+at+um), middle Kuyuglas (
Pennisatum clandestinum)
, and carpet grass (Axonopus a
ffinis , Axonopus compresa
Includes both warm-season grasses such as (U.S.).

Compositions of the invention can be found in St. Charles, Missouri; Detroit, Michigan; and Lansing, Tennessee;
It has been tested and found to be effective in controlling red grass moth under a variety of climatic conditions in locations throughout the United States including: Memphis and Cordopa; Peoria, Illinois; Loxley, Alabama; Pensacola and Zellwood, Florida; and Cincinnati, Ohio. Ta.

weeding data The efficacy of the compositions and methods of the present invention is demonstrated in Tenyi.

These terms have the following meanings:

Symbol Meaning DAT Observation date after treatment Control rate of indicated weed or turfgrass species Damage rate of existing turfgrass damage (or control) rate EC Emulsion G Granule composition ME Microencapsulated composition In the following,
The weed pre-emergence tests are shown first in Parts 1 to 5, and then the weed post-emergence tests are shown in Parts 6F# to 8F. In some trials, control rates of other weeds or turf grasses are also reported. The application rate of active ingredient (“rate”) is given in square/ha. In most cases a reading is available for each plot in each test. Readings 2f, places not performed are indicated in the table with a dash (-).

2nd table location: St. Charles, Missouri Type of grass: Sugahagusa grasshopper control pot Sugahagusa grasshopper damage section 31b/gal EC0,286810 (0,36kl
? /L) 76 00
．． 42 75 00.56
85 200.84 95
01.12 100 10
0.5%G O,28830 0,42800 2nd Clothes (Continued) Sugahagusa Damage Section 0.5% () 0.56 100
00.84 100 01.
12 100 041b/gal
ME 0.28 86 0(0
,48kg/L) 40 00
．． 42 78 00.56
100 00.84 100
01.12 100 0
Table 3: Location: Cincinnati, Niobio State Type of grass: Sugahagusa flea control pot Sugahagusa flea damage prescription Percentage: 87 DAT 87 DAT
31b/gal HC0,281000 (0,36 Yu/
L) 87 00.4
2 100 00.56 1
00 00.84 100
01.12 100 04
lb/gal Ml! : 0.28 100
0 (0,48-/L) 10
0 00.42 100
0Table 3 (continued) 0.84 100 0 1.12 100 0 0.42 93 0 0.56 100 0 0.84 100 0 1.12 100 0 Shishiba 4 Location: Cordopa, Tennessee Types of grass: Gyogishipa 31b/gal ECO, 42776975 (0,36
To! ? /L) 75 68
380.56 80 79 780
．． 84 95 86 881.12
100 100 901.68 1
00 100 1000.5%G O,4
28779830, 56878984 4th clothing (continued) 0.5%G O, 84'100 100 951
．． 12 100 100 1001.68 10
0 100 10041b/gal MB O,42
757283 (0.48kl?/L) 78
74 620.56 100 100 87 0.84 100 95 82 1.12 100 100 85 1.68 100 100 99 5th Chamber Location: St. Charles, Missouri Type of grass: Grass grass Proportion: 31 DAT 84 DAT
--■-11111----1----■-1-■■--
■■-Disability 0.84 100 921.1
2 100 1001.68 ・
100 96100, 100 Post-emergence test site Cincinnati, Niobio Type of grass: Sugahagusa 31b/gal EG O, 288978 (0,3
6kl? /L) 95
770.42 95 720.5
6 95 840.64
100 951.12 100
100 ioo io.

41b/gal MB 0.2B I
Do 98 (0.48 o'clock/L)
'890.42
100 100 6th Shishi (continued) 0.84 100 100 '1.12 98 100 0.42 100 100 0.56 100 100 0.84 100 100 1.12 100 100 7th front location: St. Charles, Missouri Turfgrass Type: Sugahagusa (0.36 Yu/L) 65
1.12 55 1.68 60 2.24 75 0.5%G O,5680 1,1280 1,6875 2,2480

Claims (10)

[Claims] (1) Contains an effective amount of S,S-dimethyl-2-(difluoromethyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-3,5-pyridinecarbodithioate as an active ingredient A method for controlling grasshopper on a lawn, the method comprising applying a composition to the lawn. 2. The method of claim 1, wherein the active ingredient is applied at a rate of 0.14 to 3.36 kg/ha. (3) The method of claim 2, wherein the composition is a solid granule. (4) The method of claim 2, wherein the composition is an emulsion. (5) The method of claim 2, wherein the active ingredient is microencapsulated. (6) Contains an effective amount of S,S-dimethyl-2-(difluoromethyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-3,5-pyridinecarbodithioate as an active ingredient , a lawn moth control composition. (7) A composition according to claim 6, wherein the active ingredient is applied at a rate of 0.14 to 3.56 kg/ha. (8) The composition of claim 6, wherein the composition is a solid granule. (9) The composition according to claim 6, wherein the composition is an emulsion. (10) The composition of claim 6, wherein the active ingredient is microencapsulated.