MXPA06009125A - Method for control of ground shoots of vines and other trunk vegetation - Google Patents

Abstract

Protoprophyrinogen oxidase enzyme-inhibiting herbicides are useful in a method for controlling unwanted ground shoots of vines and other trunk vegetation. Of particular interest is the use of carfentrazone ethyl and certain metabolites thereof for control of unwanted ground shoots of vines and other trunk vegetation.

Description

METHOD FOR THE CONTROL OF OUTBREAKS IN THE SOIL OF VID AND ANOTHER VEGETATION WITH TRUNK.

This application claims the benefit of the US provisional patent application number 60/543/348, filed on February 10, 2004.

FIELD OF THE INVENTION The present invention relates to the field of control of shoots in the soil of vines and other vegetation with trunk.

BACKGROUND OF THE INVENTION The undesirable shoots in the soil grow at the base of the main trunks of the vines and other vegetation with trunk, preventing the growth of the main stem when using the available nutrients. In order to have a strong and healthy main stem, undesirable shoots in the soil must be eliminated. Usually physical removal, chemical treatment or combinations of both are used to control these undesirable outbreaks in the soil. Physical elimination is expensive and time consuming. The current physical elimination of the shoots in the ground causes a wound in the trunk of the vine or other vegetation with trunk. The wound Exposure allows diseases to enter that adversely affect growth, or that kill the vine or vegetation. Therefore, the physical elimination is not optimal. The chemical treatment of unwanted shoots in the soil requires the application of a chemical, that is, a herbicide, in the area where the sprouts are located in the soil. The known herbicides for use in the control of shoots in the soil are diquat and paraquat. There are considerable disadvantages in the use of the aforementioned herbicides to control shoots in the soil. For example, these herbicides are classified as unfavorable for worker safety (they are classified as T / T + in toxicity), they act very slowly, they require high application rates, and in some cases, they cause a wound that allows the entry of diseases. Clearly, the chemical treatment methods are deficient in some aspects of the control of unwanted vine shoots, with the herbicides that are currently used. A newer class of herbicides other than those discussed above controls the plants by interrupting certain functions in the plant cell. These herbicides are known as inhibitors of the enzyme protoporphyrinogen oxidase (commonly known as PPO inhibitors), which cause disruption of cell membranes by inducing lipid peroxidation, which results in the death of the plant. An example of a PPO inhibitor is ethylcarfentrazone: Ethyl carfentrazone, that is, α-2-dichloro-5- [4- (difluoromethyl) -4,5-dihydro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1-yl Ethyl 4-fluorobenzenepropanoate is described and claimed in US Pat. No. 5, 125,958.

BRIEF DESCRIPTION OF THE NONDION It has been found that the use of PPO inhibitors in shoots of vines and other vegetation with unwanted trunk in the soil, effectively and quickly eliminates the outbreak on land in low proportions of use. Also, since the bud falls, a separation layer remains where the base of the shoot was attached to the main trunk. This separation layer forms an effective barrier for the entry of diseases. The aforementioned herbicides previously used to control shoots in the soil do not allow the formation of a separation layer. In accordance with the present invention, it has now been found that the herbicides with protoporphyrinogen enzyme inhibitor oxidase (PPO inhibitors), are useful to control outbreaks of vines and other vegetation with unwanted trunk in the soil. Specifically, the invention relates to a method for controlling shoots of vines and other vegetation with unwanted trunk in the soil, which comprises applying an effective amount of an inhibitor herbicide of protoporphyrinogen oxidase enzyme to a site where said shoots are growing. on the floor. Other aspects of the present invention will be apparent from the following description.

DETAILED DESCRIPTION OF THE INVENTION One aspect of the present invention relates to a method for controlling outbreaks of vines and other vegetation with unwanted trunk in the soil, which comprises applying an effective amount of an inhibitor herbicide of protoporphyrin-genase oxidase enzyme to a site in where those outbreaks are growing. Other vegetation with trunk may include, without limitation, maximum quality fruit (apple, pear and others), drupes (peach, plum, cherry, nectarine and others), soft fruits (raspberry, blackberry, redcurrant, strawberry and others) , citrus fruits (orange, lemon, tangerine and others), hops, trees, shrubs, vegetation with rhizomes, thick and ornamental vegetation. A preferred embodiment of the invention is one in which said shoots of vines and other vegetation with unwanted trunk in the soil are Vine shoots and buds of fruit trees on the ground. The buds on the ground of fruit trees with drupe preferred, are plum buds on the ground. As stated above, PPO inhibiting herbicides, their salts, esters, acids and metabolites acceptable for agricultural use, find utility to control outbreaks of vines and other vegetation with unwanted trunk in the soil when applied by the methods of the present invention to a site where said shoots are growing in the soil. Examples of these PPO inhibitor herbicides include, without limitation, one or more of acifluorfen-sodium, aclonifen, bifenox, clometoxifen, clornitrofen, ethyl-ethoxyfen, fluorodifen, ethyl fluoroglycophene, fluoronitrofen, fomesafen, furiloxifen, halosafen, lactofen, nitrophen, nitrofluorfen, oxyfluorophen, ethyl-cinidon, pentyl-flumiclorac, flumioxazin, profluazol, pyrazogil, oxadiargyl, oxadiazon, pentoxazone, fluazolate, ethyl-pyraflufen, benzfendizone, butafenacil, methyl-flutiacet, thidiazimin, azaphenidin, ethyl-carfentrazone, sulfentrazone, ethyl- f lufenpir, as well as other PPO inhibiting herbicides, and their salts, esters, acids and metabolites acceptable for agricultural use. A preferred PPO inhibitor herbicide for the control of outbreaks of vines and other vegetation with unwanted trunk in the soil is ethyl carfentrazone, and the metabolites of ethyl carfentrazone, namely: i) a, 2-dichloro- 5- [4- (difluoromethyl) -4,5-dihydro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1-yl] -4-fluorobenzenepropanoic acid (chloropropanoic acid), ii) acid 2-dichloro- - [4- (difluoromethyl) -4,5-dih idro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl] -4-fluorobenzenepropenoic (cinnamic acid), iii ) 2-dichloro-5- [4- (difluoromethyl) -4,5-dihydro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1-yl] -4-fluorobenzoic acid (benzoic acid), and iv) 2-chloro-5- [4- (d if luoromethyl) -4,5-dihydro ro-3-m eti l-5-oxo-l H- 1,2,4 -triazol-1 -yl] -4-fluorobenzenepropanoic acid (propanoic acid). A more preferred PPO inhibitor herbicide for control of shoots of vines and other vegetation with unwanted trunk in the soil is ethyl carfentrazone. Other analogs, homologs or derivatives of ethyl carfentrazone which find use in the methods of the present invention include the following: wherein R is selected from CH3, CH2CH2CH3, CH (CH3) 2) (CH2) 3CH3, CH2CH (CH3) 2, n-pentyl, n-hexyl, Na +, K +, Li +, Ca +, and NH4 +. The ethyl carfentrazone, the metabolites, the analogs, homologs or derivatives that are disclosed herein, can be prepared by the methods taught in the U.S. Pat. number 5, 125, 958 or by methods analogous thereto, or by fam iliar methods for a person skilled in the art. The ethyl carfentrazone can be used with an application rate or concentration from about 12 g / hL to 36 g / hL. Preferably, the ethyl carfentrazone can be used at an application rate or concentration of about 18 g / hL. Under certain conditions, it may be advantageous to control outbreaks of vines and other unwanted vegetation on the ground., an effective amount of one or more of the PPO inhibitor herbicides is combined with a second herbicide. Particularly advantageous is the combination of one or more other herbicides which are known to have herbicidal activity in shoots of vines and other vegetation with trunk unwanted in the soil or which are known for other uses, such as diquat, paraquat, sulfate copper, copper chelates, endothelium, 2,4-D, fluridone, glufosinate-ammonium, glyphosate, imazapyr, fluridone, triclopir, clomazone and bensulfuron. A preferable combination of a PPO inhibitor herbicide and a herbicide known for its activity on shoots of vines and other vegetation with unwanted trunk in the soil is ethyl carfentrazone and one or more of diquat, paraquat, copper sulfate, chelates of copper, endothelium, 2,4-D, fluridone, glufosinate-ammonium, glyphosate, imazapir, fluridone, triclopir, clomazone and bensulfuron. As used in this specification, and unless otherwise indicated, the terms "inhibition of protoporphyrinogen oxidase enzyme", "protoporphyrinogen enzyme inhibitor" oxidase "," PPO inhibition ", or" PPO inhibitor ", since these terms refer to the herbicides used in the present invention, are one and the same.The term" control "refers to the elimination or reduction of the number of outbreaks of vines and other vegetation with unwanted trunk in the soil to a point at which it is no longer a threat to the main stem of the vine or vegetation The term "L / hL" refers to liters per hectolitre The term "g / hL" refers to grams per hectoliter The term "hectoliter" refers to 100 liters of spray liquid volume The "about" modifier is used here to indicate that certain intervals Preferred are not determined in a fixed way The meaning will often be evident to a connoisseur of the subject, where the guidance from the experience of the connoisseurs of the matter is missing, the guide from the context is missing, and where a rule More specific not indicated in the following, the "approximately" interval must not be more than 10% of the absolute value of a final point or 10% of the indicated interval, whichever is less. A person skilled in the art will, of course, recognize that the formulation and manner of application of a toxic substance can affect the activity of the material in a given application. Thus, for use in the control of shoots of vines and other vegetation with unwanted trunk in the soil, the herbicides that inhibit PPO that find utility in the present invention can be formulated as water-dispersible granules, as fine powders, as wettable powders, as emulsifiable concentrates, as solutions, or as any of the various other known types of formulations, depending on the desired mode of application. It should be understood that the quantities indicated in this specification are intended to be approximate only, as if the word "approximately" were placed before the specified quantities. These herbicidal compositions can be applied either as spraying liquids diluted in water, or as powders, or as granules in the areas in which the suppression of vegetation is desired. These formulations may contain as little as 0.1%, 0.2% or 0.5% up to as much as 95% or more by weight of active ingredient. Powders are mixtures that flow freely from the active ingredient with finely divided solids, such as talc, natural clays, Kieselguhr, flours such as walnut crust or cottonseed flours, and other organic and inorganic solids that act as dispersants and carriers for the toxic substance; these finely divided solids have an average particle size of less than about 50 microns. A typical powdered formulation useful herein is one that contains 1.0 part or less of the herbicidal compound and 99.0 parts of talc. Wettable powders are in the form of particles finely divided, which are easily dispersed in water or other dispersant. The wettable powder is finally applied either. as a dry powder or as an emulsion in water or another liquid. Typical carriers for wettable powders include Fuller's earth, kaolin clays, silicas and other highly absorbent, easily wettable inorganic diluents. Wettable powders are usually prepared to contain about 5 to 80% of the active ingredient, depending on the absorbency of the carrier, and usually also contain a small amount of a wetting, dispersing or emulsifying agent to facilitate dispersion. For example, a useful wettable powder formulation contains 80.0 parts of the herbicidal compound, 17.9 parts of Palmetto clay and 1.0 parts of sodium lignosulfonate and 0.3 parts of sulfonated aliphatic polyester as wetting agents. Other useful formulations for herbicidal applications are emulsifiable concentrates (EC), which are liquid compositions dispersible in water or other dispersant, and may consist entirely of the herbicidal compound and a liquid or solid emulsifying agent, or may also contain a liquid carrier, such as xylene, heavy aromatic naphthas, isophorone, or other non-volatile organic solvents. For the herbicidal application, these concentrates are dispersed in water or in another liquid carrier, and are normally applied as a spray to the area to be treated. The percentage by weight of the ingredient The essential active ingredient may vary according to the manner in which the composition is to be applied, but in general it contains from 0.5 to 95% active ingredient per weight of the herbicidal composition. Fluid formulations are similar to ECs, except that the active ingredient is suspended in a liquid carrier, usually water. Fluid formulations, such as ECs, may include a small amount of a surfactant, and typically will contain active ingredients in the range of 0.5 to 95%, often from 10 to 50%, by weight of the composition. For its application, the fluid formulations can be diluted in water or in another liquid vehicle, and are normally applied as a spray to the area to be treated. Typical wetting, dispersing or emulsifying agents used in certain formulations include, without limitation, the alkyl and alkylaryl sulfonates and sulfates and their sodium salts; polyaryl alkylaryl alcohols; sulphated higher alcohols, polyethylene oxides, sulphonated animal and vegetable oils, sulfonated petroleum oils, fatty acid esters of polyhydric alcohols and ethylene oxide addition products of such esters; and the product of addition of long chain mercaptans and ethylene oxide. Many other types of useful surface active agents are commercially available. Surface active agents, when used, normally constitute from 1 to 15% by weight of the composition. Still other formulations useful for applications herbicides include simple solutions of the active ingredient in a solvent in which it is completely soluble in the desired concentration, such as acetone, alkylated naphthalenes, xylene, or other organic solvents. Granular formulations, in which the toxic ingredient is carried on relatively thick particles, are particularly useful for aerial distribution or for penetration into foliages. Pressurized sprays, typically aerosols wherein the active ingredient is dispersed in finely divided form as a result of vaporization of a low boiling point dispersing solvent carrier, can also be used. Water-soluble or water-dispersible granules are free flowing, non-dusty, and easily soluble in water or miscible in water. In the use by the farmer in the field, granular formulations, emulsifiable concentrates, fluid concentrates, solutions, etc. , can be diluted with water to give an active ingredient concentration in the range of 0.1% or 0.2% up to 1.5% or 2%. The following examples further illustrate the invention, but, of course, should not be interpreted in any way as limiting its scope. The examples are organized to present procedures for the evaluation of certain PPO inhibitor herbicides when they come into contact with shoots of vines and other vegetation with unwanted trunk in the soil, and expose certain biological data indicating the efficacy of these compounds.

EXAMPLE 1 PROOF OF EFFICACY OF ETIL-CARFENTRAZONA IN UNWANTED OUTBREAKS OF VIDES IN EL SU ELO Tests were carried out by spraying 12-36 g / hL of carfentrazone formulated as 60 ME (equivalent to 0.2 - 0.6 L / hL of SPOTLIGHT PLUS 60 ME, a composition containing 60 g / L of carfentrazone) on vine shoots. The vines were evaluated periodically after the application. The percentage (%) of control or efficacy was determined as the percentage in volume reduction of the vine shoots after the spray, compared with an untreated reference. Four tests were performed. The results, shown as an average of the four tests, are compared with the results observed in the same tests with diquat (Reglone 2), applied at 1.0 liter / hL and paraquat (Gramoxone Plus) at 1.4 L / hL. The results and the comparison are in Table 1 below.

TABLE 1 DAT = Days after treatment EXAMPLE 2 EFFICACY TEST OF ETI-L-CARFENTRAZONE IN NO VINE OUTBREAKS, DESIRED IN THE SOIL WITH A SINGLE APPLICATION Tests were carried out by spraying 12 to 1 8 g / hL of carfentrazone formulated as a 60ME (equivalent to 0.2-0.3 L / hL of SPOTLIGHT PLUS 60ME containing 60 g / L of carfentrazone) about vine shoots. A second application was made 30 days later. The vines were evaluated periodically after the application of the second spray. The percentage of control or efficacy was determined as a percentage in volume reduction of the vine shoots after the spray, compared with an untreated reference. Four tests were performed. The results, which are shown as an average of the four tests, are compared with the results observed in the same tests with diquat (Reglone 2) applied in 2 x 1.0 / hL and paraquat (Gramoxone Plus) at 2 x 1.4 l / hL in an interval of 30 days, respectively. The results and comparison are in Table 2 below.

TABLE 2 DAST = Days after the second treatment EXAMPLE 3 EFFICACY TEST OF ETIL-CARFENTRAZONE IN UNWANTED OUTBREAKS OF PLUMS IN THE SOIL Tests were carried out by spraying 12 to 27 g / hL of carfentrazone formulated as a 60ME (equivalent to 0.2-0.45 L / hL of SPOTLIGHT PLUS 60ME containing 60 g / L of carfentrazone) on the plum tree shoots. Prune trees were evaluated periodically after application. The percentage of control or efficacy was determined as a percentage in volume reduction of the shoots in the soil after the spray, compared with an untreated reference. Four tests were performed. The results, which are shown as an average of the four tests, are compared with the results observed in the same tests with glufosinate (Basta F1) applied at 1.25 liters / hL. The results and the comparison are in Table 3 below.

TABLE 3 DAT = days after treatment EXAMPLE 4 PROOF OF EFFICACY OF ETIL-CARFENTRAZONA IN UNWANTED OUTBREAKS OF PLUQUIL ON THE EARTH Tests were carried out by spraying 12 to 27 g / hL of carfentrazone formulated as a 60ME (equivalent to 0.2-0.45 L / hL of SPOTLIGHT PLUS 60ME containing 60 g / L of carfentrazone) on the plum tree shoots. Prune trees were evaluated periodically after application. The percentage of control or efficacy was determined as a percentage in volume reduction of the shoots in the soil after spray, compared to an untreated reference. Four tests were performed. The results, which are shown as an average of the four tests, are compared with the results observed in the same tests with g lufosinate (Basta F1) applied at 1.25 liters / hL. The results and the comparison are in Table 4 following.

TABLE 4 DAT = Days after treatment While this invention has been described with an emphasis on preferred embodiments, those skilled in the art will understand that variations of the preferred embodiments may be used and that it is intended that the invention may be practiced in other ways than those specifically described herein. Accordingly, this invention includes all modifications comprised within the spirit and scope of the invention, as defined by the following claims.

Claims (12)

1. CLAIMING IS 1 . A method to control outbreaks of vines and other vegetation with unwanted trunk in the soil, which involves applying an effective amount of a protoporphyrinogen oxidase inhibitor herbicide to a site where sprouts are growing in the soil.
2. 2. The method of claim 1, further characterized in that said shoots of vines and other vegetation with unwanted trunk in the ground are vine shoots on the ground.
3. 3. The method of claim 1, further characterized in that said unwanted shoots in the soil of vines and other vegetation with trunk, are buds of drupe fruit trees.
4. 4. The method of claim 3, further characterized in that said buds of drupe fruit are plum tree buds.
5. The method of claim 1, further characterized in that said protoporphyrinogen oxidase enzyme inhibiting herbicide is selected from the group consisting of acifluorfen-sodium, aclonifen, bifenox, clometoxifen, clornitrofen, ethyl-ethoxyfen, fluorodifen, etii-fluoroglycophon, fluoronitrofen, fomesafen, furiloxifen, halosafen, lactofen, nitrophen, nitrofluorfen, oxyfluorophen, ethyl-cinidon, pentyl-fl umiclorac, flumioxazin, profluazol, pyrazogil, oxadiargyl, oxadiazon, pentoxazone, fluazolate, ethyl-pyraflufen, benzfendizone, butafenacil, methyl-flutiacet , tidiazimin, azafenidin, ethyl-carfentrazone, sulfentrazone, ethyl-flufenpyr, its salts, esters, acids and metabolites acceptable for agricultural use.
6. 6. The method of claim 5, further characterized in that said inhibitor of protoporphyrinogen oxidase enzyme is selected from the group consisting of i) a, 2-dichloro-5- [4- (difluoromethyl) -4,5-d ihydro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1-yl] -4-fluorobenzenepropanoic acid, ii) 2-dichloro-5- [4- (difluoromethyl) -4,5- d lh idro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1 -yl] -4-fluorobenzenepropenoic acid, iii) 2-dichloro-5- [4- (difluoromethyl) -4, 5-dihydro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1-yl] -4-fluorobenzoic acid, and iv) 2-chloro-5- [4- (difluoromethyl) -4 , 5-dihydro-3-methyl-5-oxo-1 H-1, 2,4-triazol-1-yl] -4-fluorobenzenepropanoic acid.
7. The method of claim 6, further characterized in that said protoporphyrinogen oxidase inhibitor herbicide is ethyl carfentrazone.
8. The method of claim 7, further characterized in that said ethyl carfentrazone is used in a concentration from about 13 g / hL to about 36 g / hL.
9. 9. The method of claim 8, further characterized in that said ethyl carfentrazone is used in a concentration of about 18 g / hL.
10. The method of claim 1, further characterized in that said inhibitor enzyme enzyme protoporphyrinogen oxidase is combined with a second herbicide.
11. 11. The method of claim 10, further characterized in that said second herbicide is selected from the group consisting of diquat, paraquat, copper sulfate, copper chelates, endotal, 2,4-D, fluridone, glufosinate-ammonium, glyphosate, imazapyr, fiuridone, triclopir, clomazone and bensulfuron. The method of claim 10, further characterized in that said protoporphyrinogen oxidase inhibitor herbicide is etll-carfentrazone. SUMMARY The herbicides that inhibit the protoporphyrinogen oxidase enzyme are useful in a method to control undesirable outbreaks of vines and other vegetation with trunk in the ground. Of particular interest is the use of ethyl carfentrazone and certain metabolites thereof for the control of undesirable shoots of vines and other vegetation with trunk in the ground.