HERBICIDE MIXTURES

Abstract: The efficacy of defined aryloxypicolinamide herbicides, in particular their spectrum of weed control and selectivity for the crop species, is synergistically enhanced by combination with one or more selected second herbicidal compounds.

Description: HERBICIDE MIXTURES The present invention relates to an .improvement in the efficacy of aryloxypicolinamide herbicides by combination with a selected second herbicidal compound. Aryloxypicolinamides are a novel group of compounds, claimed in Applicants' European Patent No. 447004, which show excellent herbicidal activity, in particular against broad leaf weeds in cereal crops. However, the aryloxypicolinamides when used as the sole active ingredient do not always achieve effective control of the full spectrum of weed species encountered in commercial agronomic practice, in conjunction with reliable selectivity for the crop species. Such gaps in the spectrum of control can often be remedied by co-treatment with another herbicide known to be effective against the relevant weed species. In the course of their investigations into the efficacy of various partners for aryloxypicolinamides, Applicants have found that selected combinations produce not merely the expected, additive effect, but exhibit a significant synergistic effect (i.e. these combinations show a much higher level of activity than predicted from that of the individual compounds) which enables a greater selectivity for the crop species. A mixture of herbicides shows a synergistic effect if the herbicidal activity of the mixture is larger than sum of activities of the separately applied compounds. The expected herbicidal activity for a given mixture of two herbicides can be calculated as follows: (comp. Colby, S.R., "Calculating synergistic and antagonistic response of herbicide combinations", Weeds 15, pp 20-22 (1967)): Yx(lOO-X) WE.=X+ 100 Wherein X is the percentage of growth inhibition upon treatment with a herbicide 1 at a dosage of p kg/ha compared with an untreated control (X-0%) Y is the percentage of growth inhibition upon treatment with a herbicide 2 at a dosage of q kg/ha compared with an untreated control WE. is the herbicidal effect to be expected upon treatment (% of growth inhibition compared with untreated control) with a combination of herbicide 1 and 2 at a dosage of p + q g/ha If the actual weed control (W) exceeds the expected (calculated) weed control (WE), the mixture shows a synergistic effect. Thus, the combinations of the present invention not only achieve control of certain weed species which are difficult to combat effectively with aryloxypicolinamides alone, in particular grass weeds such as Alopecurus myosuroides; Apera spica-venti; and Echinocloa crus-galli, but also show significant synergistic increase in the level of activity against those weeds and also many broad-leaved weeds. This combination of advantages yields important benefits in practical agronomic applications. Firstly, it provides treatment for cereal crops which will control the majority of the significant weed species; secondly it enables that effective control to be attained with lower application rates of active material - with consequential environmental benefits and also greater selectivity of action in favour of the crop species. Accordingly, the present invention provides a herbicidal composition comprising a herbicidally acceptable carrier and/or surface active agent together with, as active ingredient, a mixture of:- at least one aryloxypicolinamide of the general formula I in which Z represents an oxygen or sulphur atom; R. represents a hydrogen or halogen atom or an alkyl or haloalkyl group; R„ represents a hydrogen atom or an alkyl group; q is 0 or 1; R„ represents a hydrogen atom or an alkyl or alkenyl group; the or each group X independently represents a halogen atom or an optionally substituted alkyl or alkoxy group, preferably a haloalkyl group, or an alkenyloxy, cyano, carboxy, alkoxycarbonyl, (alkylthio)carbonyl, alkylcarbonyl, amido, alkylamido, nitro, alkylthio, haloalkylthio, alkenylthio, alkynylthio, alkylsulphinyl, alkylsulphonyl, alkyloximinoalkyl or alkenyloximinoalkyl group; n is 0 or an integer from 1 to 5; the or each group Y independently represents a halogen atom or an alkyl, nitro, cyano, haloalkyl, alkoxy or haloalkoxy group; and m is 0 or an integer from 1 to 5; together with a second herbicidal component selected from:- a) a urea-type herbicide, in particular chlortoluron, isoproturon, linuron or neburon; b) a triazine-type herbicide in particular atrazine, cyanazine or simazine; c) a hydroxybenzonitrile herbicide in particular bromoxynil or ioxynil; and d) an aryloxyalkanoic acid herbicide in particular dichlorprop, diclofop, MCPA or mecoprop (CMPP) . e) a dinitroaniline herbicide, such as pendimethalin; f) a thiocarbamate herbicide, such as prosulfocarb; g) amidosulfuron; h) a diphenyl ether herbicide, such as aclonifen; i) a pyridazine herbicide, such as pyridate; j) a fluorene carboxylic acid herbicide, such as flurenol; k) a pyridyloxyacetic acid herbicide, such as fluroxypyr; 1) an arylalanine herbicide, such as flamprop-isopropyl. The pattern of persistence of the aryloxypicolinamide (abbreviated herein as "AOP") is such that the combined treatment of the present invention can be attained either by the application of a prepared mixture as defined above, or by time separated application of separate formulations. Hence, in another embodiment, the present invention provides a method for controlling the growth of weeds at a cereal crop locus which comprises applying to the locus an AOP as defined in above, and a second component which is selected from those listed above. The treatment according to the invention may be used to control a broad spectrum of weed species in cereal crops, e.g. wheat, barley, rice and maize by pre- or postemergence treatment, especially early and late post-emergence, without significant damage to the crop. The term "pre-emergence application" means application to a soil in which seeds or seedlings are present before the emergence of the weeds above the surface of the soil. "Post-emergence application" means application to the aerial or exposed portions of the weeds which have emerged above the surface of the soil. Weeds that may be controlled by the combinations include: Veronica persica Veronica hedearaefolia Stellaria media Lamium purpureum Lamium amplexicaule Aphanes arvensis Galium aparine Alopecurus myosuroides Matricaria inodora Matricarria matricoides Anthemis arvensis Papaver rhoeas Poa annua Apera spica-venti Phalaris paradoxa Phalaris minor Avena fatua Lolium perenne Bromus sterilis Poa trivialis Spergula arvensis Cerastes holosteoides Arenaria seryllifolia Silene vulgaris Legousia hybrida Geranium dissectum Montia perfoliata Myosotis arvensis Chenopodium arvensis Polygonum aviculare Polygonum lapathifolium Polygonum convolvulus Galeopsis tetrahit Chrysantemum segetum Centaurea cyanus Viola arvensis Senecio vulgaris Cirsium arvense The preferred compound for use as the aryloxypicolinamide component is of the general formula:- wherein R» is a hydrogen atom or an ethyl group, and Y is a hydrogen or fluorine atom. The application rate of the AOP component is normally in the range of 25 to 250 grams of active ingredient (gai) per hectare, with rates between 30-100 gai/ha often achieving satisfactory control and selectivity. The optimal rate for a specific application will depend on the crop(s) under cultivation and the predominant species of infesting weed and can readily be determined by established biological tests. The selection of the second component will likewise be dependent on the crop/weed situation to be treated, and will be readily identifiable by those skilled in this area. The application rate of the second component is determined primarily by the chemical type of that component, since the intrinsic activity of different types of herbicide varies widely. For example, the activity of a triazine herbicide, such as cyanazine or si azine, can be almost tenfold greater than that of a urea herbicide such as chlortoluron or isoproturon. In general, the application rate of the second component is in the range of 500 to 5000 gai/ha, preferably 1000-2500 gai/ha, when the second component is a urea or thiocarbamate herbicide; in the range 25 to 100 gai/ha when the second component is amidosulfuron or a pyridyloxyacetic acid herbicide; and in the range 100 to 750 gai/ha when the second component is one of the other herbicide groups listed above. Again, the optimal rate for the chosen second component will depend on the crop(s) under cultivation and the level of weed infestation, and can readily be determined by established biological tests. Naturally, with such a wide variation in application rate for the second component, the ratio of AOP to that second component will be determined predominantly by the choice of second component. Thus, the ratio AOP: Second Component may vary from 2:1 (second component - amidosulfuron) to 1:60 (second component = prosulfocarb) . EXAMPLES: General Method: The trials were carried out under glasshouse conditions as pre- and post-emergence applications. The plant seeds were sown in pots containing a loamy sand soil (0.5 1). The herbicides were applied as single treatments, or in a combination comprising an AOP compound of formula I and a second compound as designated, before or after emergence of weeds and crop. The herbicidal performance was assessed as percent damage in comparison to the untreated control plants. The assessment was done 21 days after the treatment. ■ Wheat and barley were treated at the 3-4 leaf stage, the broad-leaved weeds at the 2-4 leaf stage. The AOP component employed for most of the evaluation was the compound of formula II above wherein Y is a fluorine atom and R„ is a hydrogen atom, and in the results listed hereafter is designated WL 161616. Two other AOP compound of formula II above were also evaluated, namely:- i) the compound wherein Y is a hydrogen atom and R„ is an ethyl group (designated WL 165181) , and ii) the compound wherein Y and R„ both represent a hydrogen atom (designated WL 163193) . The second component was selected from those listed above, with application rates (and hence component ratios) chosen to be appropriate to the established activity level of that second component. The results of these experiments are tabulated as Examples 1 to 17, wherein all the results from a chosen "second component" are collected under the same Example number, different dosage rates/test species being recorded as "IA", "IB" etc. From these results it is clear that all experiments demonstrated the synergism between the AOPs and the designated second compound. Crop tolerance (wheat and barley) was excellent in all treatments. Example IA: Herbicidal performance of the mixture WL 161616 + Isoproturon (30 g a.i./ha + 1000 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W == oobbsseerrvveedd rreessppoonnssee Expected control of Polygonum convolvulus, Thlaspi arvense, Capsella bursa-pastoris, Sinapis arvense, Lamium purpureum, Matricaria inodora and Galium aparine was 93, 91, 89, 84, 55, 81 a 90 resp., clearly demonstrating that the combination was synergistic. Example 1 : Herbicidal performance of the mixture WL 161616 + Isoproturon (30 g a.i./ha 1000 g a.i./ha) against grass weeds in post-emergence application WE = expected response by means of the Colby formula W β observed response Expected control of Alopecurus myosuorides and Apera spica-venti was 47 and 74 resp., clearly demonstrating that the combination was synergistic. Example 1C: Herbicidal performance of the mixture WL 161616 + Isoproturon (60 g a.i./ha 1000 g a.i./ha) against Apera spica-venti in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Apera spica-venti was 79, clearly demonstrating that the combination was synergistic. Example 1-D: Herbicidal performance of the mixture WL 161616 + Isoproturon (60 g a.i./ha + 960 g a.i./ha) against broad-leaved and grass weeds in pre-emergence application WE = expected response by means of the Colby formula W = = oobbsseerrvveedd rreessppoonnssee Expected control of Stellaria media, Viola arvensis, Veronica persica and Alopecurus myosuroide was 57, 82, 17, and 24 resp., clearly demonstrating that the combination was synergistic. Example1E: Herbicidal performance of the mixture WL 161616 + Isoproturon (120 g a.i./ha + 960 g a.i./ha) against broad-leaved and grass weeds WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Veronica persica and Alopecurus myosuroides was 57, 71 and 32 resp., clearly demonstrating that the combination was synergistic. Example IF: Herbicidal performance of the mixture WL 161616 + Isoproturon (60 g a.i./ha + 1440 g a.i./ha) against broad-leaved and grass weeds in pre-emergence applicatio WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Viola arvensis, Veronica persica and Alopecurus myosuroide was 67, 86, 66 and 78 resp., clearly demonstrating that the combination was synergistic. Example 1G: Herbicidal performance of the mixture WL 161616 + Isoproturon (120 g a.i./ha + 1440 g a.i./ha) against Alopecurus myosuroides WE = expected response by means of the Colby formula W = observed response Expected control of Alopecurus myosuroides was 34, clearly demonstrating that the combination was synergistic. Example 1H: Herbicidal performance of the mixture IPU/Flurenol (1000 g a.i./ha + 180 g a.i./ha) + WL 161616 (30 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl) and Lamium purpureum was 82 and 61 resp., clearly demonstrating that the combination was synergistic. Example 1J: Herbicidal performance of the mixture IPU/Flurenol (1000 g a.i./ha + 180 g a.i./ha) + WL 161616 (60 g a.i./ha) against broad-leaved weeds and grasses in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Lamium purpureum and Alopecurus myosuroides was 82, 68 and 36 resp., clearly demonstrating that the combination was synergistic. Example1K; Herbicidal performance of the mixture IPU/Flurenol (2000 g a.i./ha + 180 g a.i./ha) + WL 161616 (30 g a.i./ha) against broad-leaved weeds and grasses in post-emergence application * initial efficacy 20 days after treatment WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl) and Alopecurus myosuroides was 85 and 55 resp., clearly demonstrating that the combination was synergistic. Example 1L: Herbicidal performance of the mixture IPU/Flurenol (2000 g a.i./ha + 180 g a.i./ha) + WL 161616 (60 g a.i./ha) against broad-leaved weeds and grasses in post-emergence application * initial efficacy 20 days after treatment WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl), Galium aparine (3. whorl) and Alopecurus myosuroides was 85, 87 and 55 resp., clearly demonstrating that the combination was synergistic. Example 2A; Herbicidal performance of the mixture WL 161616 + Chlortoluron (120 g a.i./ha + 1920 g a.i./ha = mixture 1:16) against broad-leaved and grass weeds in post- emergence application WL 161616 Chlortoluron WL 161616 + Chlortoluron 120 g a.i./ha 1920 g a.i./ha 120 g a.i. /ha + 1920 g a.i. /ha weeds % control WE W Galium aparine 53 73 87 100 (2. whorl) Matricaria inodora 18 75 80 100 Cirsium arvense 50 83 92 100 Senecio vulgaris 55 43 74 98 Lamium purpureum 8 58 61 81 Alopecurus * 35 15 45 88 myosuroides * initial efficacy WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl), Matricaria inodora, Cirsium arvense, Senecio vulgaris, Lamium pupureum and Alopecurus myosuroides was 87, 80, 92, 74, 61 and 45 resp., clearly demonstrating that the combination was synergistic. Example 2B: Herbicidal performance of the mixture WL 161616 + Chlortoluron (120 g a.i./ha + 960 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Veronica hederaefolia, Matricaria inodora, Chenopodium album, Cirsium arvense and Senecio vulgaris was 83, 65, 73, 89, 41, 58, 7 and 65 resp., clearly demonstrating that the combination was synergistic. Example 2C: Herbicidal performance of the mixture WL 161616 + Chlortoluron (120 g a.i./ha + 480 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Veronica hederaefolia, Matricaria inodora, Polygonum convolvulus, Chenopodium album and Cirsiu arvense was 76 , 54, 28, 89, 26, 65, 43 and £2 resp., clearly demonstrating that the combination was synergistic. Example2D : Herbicidal performance of the mixture WL 161616 + Chlortoluron (120 g a.i./ha + 240 g a.i./ha = mixture 1:2) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Galeopsis tetrahit, Veronica hederaefolia, Matricaria inodora, Polygonum convolvulus and Cirsium arvense was 74, 53, 18, 85, 89, 25, 57 and 57 resp., clearly demonstrating that the combination was synergistic. Example 2E: Herbicidal performance of the mixture WL 161616 + Chlortoluron (60 g a.i./ha 1920 g a.i./ha = mixture 1:32) against broad-leaved and grass weeds in post- emergence application * initial efficacy WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Matricaria inodora, Cirsium arvense, Senecio vulgaris, Lamium pupureum and Alopecurus myosuroides was 90, 87, 78, 89, 62, 61 and 30 resp., clearly demonstrating that the combination was synergistic. Eκample2F : Herbicidal performance of the mixture WL 161616 + Chlortoluron (60 g a.i./ha + 960 g a.i./ha = mixture 1:16) against broad-leaved weeds in post-emergence application WL 161616 Chlortoluron WL 161616 + Chlortoluron broad-leaved 60 g a.i./ha 960 g a.i./ha 60 g a.i./ha + 960 g a.i. /ha weeds % control WE W Galium aparine 60 38 75 100 (1. whorl) Galium aparine 50 25 63 100 (2. whorl) Stellaria media 10 68 71 100 Veronica hederaefolia 83 0 83 92 Matricaria inodora 10 28 35 96 Chenopodium album 28 33 55 100 Cirsium arvense 33 48 65 100 Senecio vulgaris 33 23 48 85 WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Veronica hederaefolia, Matricaria inodora, Chenopodium album, Cirsium arvense and Senecio vulgaris was 75, 63, 71, 83, 35, 55, 65 and 48 resp., clearly demonstrating that the combinatio was synergistic. Example2G: Herbicidal performance of the mixture WL 161616 + Chlortoluron (60 g a.i./ha + 480 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WL 161616 Chlortoluron WL 161616 + Chlortoluron broad-leaved 60 g a.i./ha 480 g a.i./ha 60 g a.i./ha + 480 g a.i./ha weeds % control WE W Galium aparine 60 10 64 100 (1. whorl) Galium aparine 50 52 80 (2. whorl) Stellaria media 10 15 24 100 Veronica hederaefolia 83 0 83 90 Matricaria inodora 10 10 19 85 Polygonum convolvulus 18 48 58 100 Chenopodium album 28 8 34 85 Cirsium arvense 33 23 48 100 Senecio vulgaris 33 13 42 75 WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Veronica hederaefolia, Matricaria inodora, Polygonum convolvulus, Chenopodium album, Cirsium arvense and Senecio vulgaris was 64,52 ,24 83 , 19 , 58, 34, 48 and 42 resp., clearly demonstrating that the combination was synergistic. Example 2H: Herbicidal performance of the mixture WL 161616 + Chlortoluron (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Galeopsis tetrahit, Sinapis arvensis, Veronica hederaefolia, Polygonum convolvulus and Cirsium arvense was 61, 50, 12, 84, 86, 83, 49 and 42 resp., clearly demonstrating that the combination was synergistic. Example2J: Herbicidal performance of the mixture WL 161616 + Chlortoluron (30 g a.i./ha + 960 g a.i./ha = mixture 1:32) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Veronica hederaefolia, Matricaria inodora, Chenopodium album and Cirsium arvense was 64, 51, 71, 73, 32, 45 and 60 resp., clearly demonstrating that the combination was synergistic. Example 2K : Herbicidal performance of the mixture WL 161616 + Chlortoluron (30 g a.i./ha 480 g a.i./ha = mixture 1:16) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Veronica hederaefolia, Matricaria inodora, Polygonum convolvulus and Cirsium arvense was 49, 37 24, 73, 15, 56 and 41 resp., clearly demonstrating that the combination was synergistic. Example 3A: Herbicidal performance of the mixture WL 161616 + Cyanazine (60 g a.i./ha + 300 g a.i./ha * mixture 1:5) against broad-leaved and grass weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine, Matricaria inodora, Polygonum convolvulus, Stellaria media and Alopecurus myosuroides was 57 » 94, 97, 88, and 41 resp., clearly demonstrating that the combination was synergistic. Example 3B: Herbicidal performance of the mixture WL 161616 + Cyanazine (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application \ WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl and 3. whorl), Veronica persica, Stellaria media, Lamium amplexicaule and Polygonum convolvulus was 70, 60, 84, 87, 25 and 71 resp., clearly demonstrating that the combination was synergistic. Example3C: Herbicidal performance of the mixture WL 161616 + Cyanazine (30 g a.i./ha + 300 g a.i./ha ■ mixture 1:10) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Veronica persica, Stellaria media, Lamium amplexicaule, Polygonum convolvulus, and Matricaria inodora was 55, 80, 90, 8, 63 and 89 resp., clearly demonstrating that the combination was synergistic. Example3D: Herbicidal performance of the mixture WL 161616 + Cyanazine (30 g a.i./ha + 240 g a.i./ha ■= mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Veronica persica, Lamium amplexicaule and Polygonum convolvulus was 55, 79, 9, and 63 resp., clearly demonstrating that the combination was synergistic. Example3E: Herbicidal performance of the mixture WL 161616 + Cyanazine (30 g a.i./ha + 150 a.i./ha = mixture 1:5) against broad-leaved and weeds I WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine, Matricaria inodora, Polygonum convolvulus and Stellaria media was 21, 81, 89, and 74 resp., clearly demonstrating that the combination was synergistic, Example F: Herbicidal performance of the mixture WL 163193 + Cyanazine (60 g a.i./ha + 300 a.i./ha » mixture 1:5) against broad-leaved and grass weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine, Matricaria inodora, Stellaria media and Alopecurus myosuroides was 72, 87, 80, and 46 resp., clearly demonstrating that the combination was synergistic. Example3G: Herbicidal performance of the mixture WL 165181 + Cyanazine (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Matricaria inodora, Galium aparine (1. whorl), Stellaria media, Lamium amplexicaule and Polygonum convolvulus was 86, 80, 93, 24, and 64 resp., clearly demonstrating that the combination was synergistic. Example 3-H: Herbicidal performance of the mixture WL 165181 + Cyanazine (30 g a.i./ha + 240 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Veronica persica, Lamium amplexicaule, Polygonum convolvulus and Stellaria media was 60, 85 t 12, 50 and 89 resp., clearly demonstrating that the combination was synergistic. Example*+A: Herbicidal performance of the mixture WL 161616 + Bromoxynil Octanoate (120 g a.i./ha + 120 g a.e./ha = mixture 1:1) against broad-leaved weeds WE = expected response by means of the Colby formula W - observed response Expected control of Stellaria media, Galeopsis tetrahit, Papaver rhoeas, Chrysanthemum segetum, Galium aparine (1st, 2nd and 3rd whorl) using the Colby formula was 85, 79, 42, 40, 95, 56 and 81 resp., clearly demonstrating that the combination was synergistic. Example-+B: Herbicidal performance of the mixture WL 161616 + Bromoxynil Octanoate (60 g a.i./ha + 240 g a.e./ha = mixture 1:4) against broad-leaved weeds WE - expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2nd and 3rd whorl), Stellaria media, Papaver rhoeas and Chrysanthemum using the Colby formula was 66, 90, 81, 88 and 67 resp., clearly demonstrating that the combination was synergistic. Example e .- Herbicidal performance of the mixture WL 161616 + Bromoxynil Octanoate (60 g a.i./ha + 120 g a.e./ha - mixture 1:2) against broad-leaved weeds WE - expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Veronica hederaefolia, Papaver rhoeas, Chrysanthemum segetum, Galium aparine (2nd and 3rd whorl) using the Colby formula was 78, 75, 92, 23, 5, 53 and 76 resp., clearly demonstrating that the combination was synergistic. Example to: Herbicidal performance of the mixture WL 161616 + Bromoxynil Octanoate (60 g a.i./ha + 60 g a.e./ha <**> mixture 1:1) against broad-leaved weeds WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Veronica hederaefolia, Chenopodium album, Centaurea cyanus, Galium aparine (1st whorl) using the Colby formula was 63, 55, 90, 69, 85 and 92 resp., clearly demonstrating that the combination was synergistic. Example^: Herbicidal performance of the mixture WL 161616 + Bromoxynil Octanoate (30 g a.i./ha + 240 g a.e./ha = mixture 1:6) against broad-leaved weeds WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Veronica hederaefolia, Papaver rhoeas, Chrysanthemum segetum, Galium aparine (2nd and 3rd whorl) using the Colby formula was 71, 95, 88, 68, 64 and 89 resp., clearly demonstrating that the combination was synergistic. Example^F: Herbicidal performance of the mixture WL 165181 + Bromoxynil Octanoate (120 a.i./ha + 120 g a.e./ha = mixture 1:1) against broad-leaved weeds WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Papaver rhoeas, Galium aparine (2nd and 3rd whorl) using the Colby formula was 80, 86, 21, 76, and 86 resp., clearly demonstrating that the combination was synergistic. Example^: Herbicidal performance of the mixture WL 165181 + Bromoxynil Octanoate (60 g a.i./ha + 240 g a.e./ha - mixture 1:4) against broad-leaved weeds WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2nd and 3rd whorl), Stellaria media, Veronica hederaefolia and Papaver rhoeas using the Colby formula was 66, 90, 66, 98 and 87 resp., clearly demonstrating that the combination was synergistic. Example -+H: Herbicidal performance of the mixture WL 165181 + Bromoxynil Octanoate (60 g a.i./ha + 120 g a.e./ha = mixture 1:2) against broad-leaved weeds WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Veronica persica, Chenopodium album, Galium aparine (2nd whorl) using the Colby formula was 60, 80, 81, 86 and 52 resp., clearly demonstrating that the combination was synergistic. Example 5A : Herbicidal performance of the mixture WL 161616 + loxynilsalt (60 g a.i./ha 120 g a.i./ha = mixture 1:2) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Chenopodium album, Polygonum convolvulus, Galium aparine (1. and 3. whorl) was 83,31 , 71, 73 and 24 resp., clearly demonstrating that the combination was synergistic. Example 5B Herbicidal performance of the mixture WL 161616 + loxynilsalt (30 g a.i./ha + 120 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula >W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Chenopodium album, Polygonum .convolvulus, Centaurea cyanus, Matricaria inodora, Galium aparine (2. whorl) and Veronica persica was 74, 87, 20, 62, 85, 86,24 and 92 resp., clearly demonstrating that the combination was synergistic. Example 5C: Herbicidal performance of the mixture WL 165181 + loxynilsalt (60 g a.i./ha + 120 g a.i./ha = mixture 1:2) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Chenopodium album, Polygonum convolvulus, Galium aparine (1. and 3. whorl) and Veronica persica was 70, 78, 64, 78,26 and 92 resp., clearly demonstrating that the combination was synergistic. Example ° A : Herbicidal response of the mixture WL 161616 + Mecoprop (60 g a.i./ha + 480 g a.i./ha - mixture 1:8) against broad-leaved weeds in post-emergence applicatio WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl) ' , Galium aparine (3. whorl), Stellaria media, Veronica persica, Chenopodium album and Cirsium arvense was 66, 70, 64, 90, 62 and 90 resp., clearly demonstrating that the combination was synergistic. Example 6B: Herbicidal response of the mixture WL 161616 + Mecoprop (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence applicatio WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Veronica hederaefol Veronica persica, Chenopodium album and Cirsium arvense was 84, 28, 92, 69, 40, 83 resp, clea demonstrating that the combination was synergistic. Example 6c Herbicidal response of the mixture WL 161616 + Mecoprop (30 g a.i./ha + 480 g a.i./ha = mixture 1:16) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Stellaria media, Veronica persica, Chenopodium album, Cirsium arvense, and Senecio vulgaris was 82, 62, 89, 60, 88, 82 resp., clearly demonstrating that the combination was synergistic. Example 6D; Herbicidal response of the mixture WL 161616 + Mecoprop (30 g a.i./ha + 240 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Galium aparine (3. whorl), Veronica hederaefolia, Veronica persica, Chenopodium album and Cirsium arvense was 67 , 2 , 23, 90, 65, 36 and 79 resp., clearly demonstrating that the combination was synergistic. Example7A Herbicidal response of the mixture WL 161616 + Dichlorprop (60 g a.i./ha + 480 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Galium aparine (3. whorl), Stellaria media, Matricaria inodora, Chenopodium album, Cirsium arvense and Senecio vulgaris was 87, 64, 76, 60, 32, 62, 77 and 73 resp., clearly demonstrating that the combinatio was synergistic. Example7B; Herbicidal response of the mixture WL 161616 + Dichlorprop (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Galium aparine (3 whorl), Veronica hederaefolia and Veronica persica was 86, 28, 52, 91 and 87 resp., clearly demonstrating that the combination was synergistic. Example 0* Herbicidal response of the mixture WL 161616 + Dichlorprop (30 g a.i./ha + 480 a.i./ha = mixture 1:16) against broad-leaved weeds in post-emergence applicatio WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Galium aparine (3. whorl), Stellaria media, Matricaria inodora, Chenopodium album, Cirsium arvense and Senecio vulgaris was 74, 61, 76, 58, 32, 60, 72 and 68 resp., clearly demonstrating that the combinati was synergistic. Example 7D: Herbicidal response of the mixture WL 161616 + Dichlorprop (30 g a.i./ha + 240 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (3. whorl), Veronica hederaefolia Veronica persica, Cirsium arvense and Senecio vulgaris was 72, 49, 89, 86, 65 and 58 resp., clearly demonstrating that the combination was synergistic. Example S k : Herbicidal performance of the mixture WL 161616 + Diclofop (120 g a.i./ha + 480 a.i./ha = mixture 1:4) against grass weeds in post-emergence application WE = expected response by means of the Colby formula W - = oobbsseerrvveedd rreessppoonnssee Expected control of Alopecurus myosuroides and Apera spica-venti was 65 and 38 resp., clearly demonstrating that the combination was synergistic. Example 3B: Herbicidal performance of the mixture WL 161616 + Diclofop (120 g a.i./ha + 240 g a.i./ha = mixture 1:2) against grass weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Apera spica-venti, Avena fatua and Digitaria sanguinalis was 38, 69 and 89 resp., clearly demonstrating that the combination was synergistic. Example 8C: Herbicidal performance of the mixture WL 161616 + Diclofop (60 g a.i./ha + 480 g a.i./ha = mixture 1:8) against grass weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Alopecurus myosuroides was 64, clearly demonstrating that the combination was synergistic. Example8D: Herbicidal performance of the mixture WL 161616 + Diclofop (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against grass weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Avena fatua was 69, clearly demonstrating that the combination was synergistic. Example 9A: Herbicidal performance of the mixture WL 161616 + MCPA (120 g a.i./ha + 720 g a.i./ha = mixture 1:6) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Papaver rhoeas, Senecio vulgaris, Myosotis arvensis, Galium aparine (2. whorl) and Galium aparine (3. whorl) was 86, 73, 82, 64, 53, and 15 resp., clearly demonstrating that the combination was synergistic. Example 9B: Herbicidal performance of the mixture WL 161616 + MCPA (120 g a.i./ha + 540 g a.i./ha = mixture 1:4.5) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Lamium purpureum, Stellaria media, Papaver rhoeas, Senecio vulgaris, Myosotis arvensis, Centaurea cyanus and Galium aparine (2. whorl) was 70, 55, 66, 62, 67, 86 and 53 resp., clearly demonstrating that the combination was synergistic. Example 9c: Herbicidal performance of the mixture WL 161616 + MCPA (60 g a.i./ha + 720 g a.i./ha = mixture 1:12) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Lamium purpureum, Stellaria media, Papaver rhoeas, Senecio vulgaris and Myosotis arvensis was 73, 78, 68, 80 and 59 resp. , clearly demonstrating that the combination was synergistic. Example 9Dι Herbicidal performance of the mixture WL 161616 + MCPA (60 g a.i./ha + 540 g a.i./ha = mixture 1:9) against broad-leaved weeds in post-emergence application • WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Papaver rhoeas, Thlaspi arvense, Senecio vulgaris, Myosotis arvensis, Centaurea cyanus and Galium aparine (1. whorl) was 30, 60, 74, 57, 62, 86 and 80 resp., clearly demonstrating that the combination was synergistic. Example 6: Herbicidal performance of the mixture WL 161616 + MCPA (60 g a.i./ha + 360 g a.i./ha = mixture 1:6) against broad-leaved weeds in post-emergence application • \ WE ■= expected response by means of the Colby formula W = observed response Expected control of Veronica persica, Papaver rhoeas, Centaurea cyanus and Galium aparine (1. whorl) was 86, 60, 70 and 80 resp., clearly demonstrating that the combination was synergistic. Example 9F: Herbicidal performance of the mixture WL 161616 + MCPA (30 g a.i./ha + 360 g a.i./ha = mixture 1:12) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Veronica persica, Stellaria media, Papaver rhoeas, Thlaspi arvense, Senecio vulgaris, Centaurea cyanus and Galium aparine (1. whorl) was 81, 18, 52, 71, 37, 68 and 65 resp., clearly demonstrating that the combination was synergistic. Example gG: Herbicidal performance of the mixture WL 161616 + MCPA (30 g a.i./ha + 270 g a.i./ha = mixture 1:9) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Veronica persica, Centaurea cyanus and Galium aparine (1. whorl) was 74, 65 and 65 resp., clearly demonstrating that the combination was synergistic. Example 9m Herbicidal performance of the mixture MCPA/Flurenol (180 g a.i./ha + 90 g a.i./ha) + WL 161616 (30 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl), Galium aparine (3. whorl), Stellaria media, Papaver rhoeas, Thlaspi arvense and Myosotis arvensis was 67, 36, 79, 8 , 61 and 87 resp., clearly demonstrating that the combination was synergistic. Example gj : Herbicidal performance of the mixture MCPA/Flurenol (270 g a.i./ha + 90 g a.i./ha) + WL 161616 (30 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Galium aparine (3. whorl), Stellaria media, Papaver rhoeas, Thlaspi arvense and Myosotis arvensis was 91, 65, 33, 80, 81, 57 and 85 resp., clearly demonstrating that the combination was synergistic. Example 9K: Herbicidal performance of the mixture MCPA/Flurenol (360 g a.i./ha + 90 g a.i./ha) + WL 161616 (30 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Galium aparine (3 whorl) and Stellaria media was 92, 70, 54 and 75 resp., clearly demonstrating that the combination was synergistic. Example 9 1 ,; Herbicidal performance of the mixture MCPA/Flurenol (360 g a.i./ha + 90 g a.i./ha) + WL 161616 (60 g a.i./ha) against broad-leaved weeds in post-emergence application WE - expected response by means of the Colby formula W = observed response Expected control of Galium aparine (1. whorl), Galium aparine (2. whorl), Stellaria media, Thlaspi arvense and Matricaria inodora was 76, 57, 79, 80 and 36 resp., clearly demonstrating that the combination was synergistic. Example 9H: Herbicidal performance of the mixture MCPA/Flurenol (360 g a.i./ha + 180 g a.i./ha) + WL 161616 (60 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl) Galium aparine (3. whorl), Lamium purpureum, Stellaria media and Thlaspi arvense was 82, 61, 81, 88 and 78 resp., clearly demonstrating that the combination was synergistic. Example 9N: Herbicidal performance of the mixture MCPA/Flurenol (540 g a.i./ha + 180 g a.i./ha) + WL 161616 (60 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl) and Galium aparine (3. whorl) was 82 and 65 resp, clearly demonstrating that the combination was synergistic. Example 9P: Herbicidal performance of the mixture MCPA/Flurenol (720 g a.i./ha + 180 g a.i./ha) + WL 161616 (120 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl), Galium aparine (3. whorl) and Matricaria inodora was 86, 66, and 53 resp., clearly demonstrating that the combination was synergistic. Example Q: Herbicidal performance of the mixture MCPA/Flurenol (720 g a.i./ha + 180 g a.i./ha) + WL 161616 (60 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl), Galium aparine (3. whorl), Lamium purpureum and Matricaria inodora was 82, 65, 80 and 47 resp., clearly demonstrating that the combination was synergistic. Example 1 0 Herbicidal performance of the mixture WL 161616 + Pendimethalin (30 g a.i./ha + 120 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Papaver rhoeas and Veronica persica was 65 and 75 resp., clearly demonstrating that the combination was synergistic. Example 11A Herbicidal performance of the mixture WL 161616 + Prosulfocarb (120 g a.i./ha 3600 g a.i./ha = mixture 1:30) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Galium aparine (2. whorl), Galium aparine (3. whorl), Chenopodium album, Polygonum album and Stellaria media was 73, 60, 60, 80 and 38 resp., clearly demonstrating that the combination was synergistic. Example 11B Herbicidal performance of the mixture WL 161616 + Prosulfocarb (120 g a.i./ha + 1800 g a.i./ha « mixture 1:15) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Chenopodium album, Polygonum convolvulus and Galium aparine (2. whorl) was 48, 80 and 73 resp., clearly demonstrating that the combination was synergistic. Example 11c Herbicidal performance of the mixture WL 161616 + Prosulfocarb (60 g a.i./ha 3600 g a.i./ha = mixture 1:60) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Viola arvensis, Polygonum convolvulus, Stellaria media, Galium aparine (2. whorl) and Galium aparine (3. whorl) was 86, 74, 28, 71 and 46 resp., clearly demonstrating that the combination was synergistic. Example IID Herbicidal performance of the mixture WL 161616 + Prosulfocarb (60 g a.i./ha 1800 g a.i./ha = mixture 1:30) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W - = oobbsseerrvveedd rreessppoonnssee Expected control of Viola arvensis, Chenopodium album, Polygonum convolvulus, Veronica persica and Galium aparine (2. whorl) was 83, 42, 20, 89 and 48 resp., clearly demonstrating that the combination was synergistic. Example 11E Herbicidal performance of the mixture WL 161616 + Prosulfocarb (30 g a.i./ha + 1800 g a.i./ha = mixture 1:60) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Viola arvensis, Polygonum convolvulus and Galium aparine (2. whorl) was 53, 10 and 39 resp., clearly demonstrating that the combination was synergistic. Example 11F Herbicidal performance of the mixture WL 161616 + Prosulfocarb (30 g a.i./ha 900 g a.i./ha = mixture 1:30) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby .formula W = observed response Expected control of Viola arvensis and Veronica persica was 53 and 69 resp., clearly demonstrating that the combination was synergistic. Example 1 ?: Herbicidal performance of the mixture WL 161616 + Amidosulfuron (60 g a.i./ha + 30 g a.i./ha = mixture 2:1) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Chenopodium album, Cirsium arvense and Myosotis arvensis was 72, 76, and 73 resp., clearly demonstrating that the combination was synergistic. Example 13A Herbicidal performance of the mixture WL 161616 + Aclonifen (60 g a.i./ha + 240 g a.i./ha - mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Lamium purpureum, Veronica persica, Galium aparine and Matricaria inodora was 87, 58, 90 and 59 resp., clearly demonstrating that the combination was synergistic. Example 13B Herbicidal performance of the mixture WL 161616 + Aclonifen (30 g a.i./ha 240 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Lamium purpureum and Veronica persica was 80 and 53 resp., clearly demonstrating that the combination was synergistic. Example 1^A Herbicidal performance of the mixture WL 161616 + Pyridate (120 g a.i./ha + 480 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Polygonum convolvulus and Senecio vulgaris was 77, 74, 68, and 78 resp., clearly demonstrating that the combination was synergistic. Example 1-4B Herbicidal performance of the mixture WL 161616 + Pyridate ( 120 g a.i./ha + 240 g a.i./ha = mixture 1:2) against broad-leaved weeds in post-emergence application WL 161616 Pyridate WL 161616 + Pyridate broad-leaved 120 g a.i./ha 240 g a.i. /ha 120 g a.i. /ha + 240 g a.i./ha weeds % control WE W Stellaria media 35 30 55 100 Galeopsis tetrahit 13 35 43 88 Sinap is arvensis 75 55 89 100 Polygonum convolvulus 28 33 52 100 Chenopodium album 80 0 80 88 Galium aparine 63 55 83 100 (1. whorl) Galium aparine 43 43 68 89 (2. whorl) Galium aparine 23 38 52 90 (3. whorl) WE = expected response by means of the Colby formula W • = observed response Expected control of Stellaria media, Galeopsis tetrahit, Sinapis arvensis, Polygonum convulvulus, Chenopodium album, Galium aparine (1. whorl), Galium aparine (2. whorl) and Galium aparine (3. whorl) was 55 » 43» 89, 52» 80, 83, 68 and 52 resp., clearly demonstrating that the combination was synergistic. Example T*C Herbicidal performance of the mixture WL 161616 + Pyridate (120 g a.i./ha + 120 g a.i./ha = mixture 1:1) against broad-leaved weeds in post-emergence application VIE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Sinapis arvensis, Veronica hederaefolia, Matricaria inodora, Polygonum convϋlvulus, Cirsium arvense, Galium aparine (1. whorl) and Galium aparine (2. whorl) was 43, 80, 90, 76, 39, 65, 70 and 56 resp., clearly demonstrating that the combination was synergistic. Example '+D Herbicidal performance of the mixture WL 161616 + Pyridate (60 g a.i./ha + 480 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Polygonum convolvulus and Chenopodium album was 77, 73, 68, and 77 resp., clearly demonstrating that the combination was synergistic. Example 1**E Herbicidal performance of the mixture WL 161616 + Pyridate (60 g a.i./ha + 240 g a.i./ha = mixture 1:4) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Sinapis arvensis, Veronica hederaefolia, Veronica persica, Polygonum convulvulus, Chenopodium album, Galium aparine (1. whorl), Galium aparine (2. whorl) and Galium aparine (3. whorl) was 53, 42, 84, 89, 91, 52, 53, 80, 60 and 49 resp., clearly demonstrating that the combination was synergistic. Example * lψ Herbicidal performance of the mixture WL 161616 + Pyridate (60 g a.i./ha + 120 g a.i./ha = mixture 1:2) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Sinapis arvensis, Veronica hederaefolia, Veronica persica, Matricaria inodora, Chenopodium album, Cirsium arvense, and Galium aparine (1. whorl) was 42, 33, 72, 78, 89, 55, 53, 67 and 63 resp., clearly demonstratin that the combination was synergistic. Example ^ Q Herbicidal performance of the mixture WL 161616 + Pyridate (30 g a.i./ha + 240 g a.i./ha = mixture 1:8) against broad-leaved weeds in post-emergence application WL 161616 Pyridate WL 161616 + Pyridate broad-leaved 30 g a.i./ha 240 g a.i./ha 30 g a.i. /ha + 240 g a.i. /ha weeds % control WE W Stellaria media 15 30 41 92 Galeopsis tetrahit 8 35 40 75 Sinapis arvensis 40 55 73 100 Veronica hederaefolia 65 48 82 99 Veronica persica 70 65 90 97 Matricaria inodora 5 88 89 100 Polygonum convolvulus 18 33 45 87 Chenopodium album 13 0 13 99 Senecio vulgaris 25 38 54 70 Galium aparine 15 55 62 100 (1. whorl) Galium aparine 10 43 49 85 (2. whorl) WE = expected response by means of the Colby formula W = observed response Expected control of Stellaria media, Galeopsis tetrahit, Sinapis arvensis, Veronica hederaefolia, Veronica persica, Matricaria inodora, Polygonum convulvulus, Chenopodium album, Senecio vulgaris, Galium aparine (1. whorl) and Galium aparine (2. whorl) was 41, 40, 73, 82, 90, 89, 45, 13, 54, 62 and 49 resp., clearly demonstrating that the combination was synergistic, Example 15A Herbicidal performance of the mixture WL 161616 + Flurenol (120 g a.i./ha + 180 g a.i./ha = mixture 1:1.5) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Papaver rhoeas, Sinapis arvensis, Myosotis arvensis and Galium aparine (2. whorl) was 77, 80, 79 and 80 resp., clearly demonstrating that the combination was synergistic Example 15B Herbicidal performance of the mixture WL 161616 + Flurenol (60 g a.i./ha + 180 g a.i./ha = mixture 1:3) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Lamium purpureum, Stellaria media, Papaver rhoeas, Myosotis arvensis and Galium aparine (2. whorl) was 81, 85, 73, 76 and 75 resp., clearly demonstrating that the combination was synergistic. Example 15c Herbicidal performance of the mixture WL 161616 + Flurenol (60 g a.i./ha + 90 g a.i./ha = mixture 1:1.5) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Veronica persica, Papaver rhoeas, Myosotis arvensis and Galium aparine (2. whorl) was 84, 73, 70 and 70 resp., clearly demonstrating that the combination was synergistic, Example 15D Herbicidal performance of the mixture WL 161616 + Flurenol (30 g a.i./ha + 90 g a.i./ha = mixture 1:3) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Veronica persica, Lamium purpureum and Galium aparine (2. whorl) was 79, 72 and 73 resp., clearly demonstrating that the combination was synergistic. Example 16A Herbicidal performance of the mixture WL 161616 + Fluroxypyr (120 g a.i./ha + 90 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Matricaria inodora, Rumex crispus and Cirsium arvense was 81 , 82 and 55 resp., clearly demonstrating that the combination was synergistic. Example ηgβ Herbicidal performance of the mixture WL 161616 + Fluroxypyr (60 g a.i./ha + 90 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W = = oobbsseerrvveedd rreessppoonnssee Expected control of Matricaria inodora and Chenopodium album was 79 and 89 resp., clearly demonstrating that the combination was synergistic. Example 6c Herbicidal performance of the mixture WL 161616 + Fluroxypyr (60 g a.i./ha + 45 g a.i./ha) against broad-leaved weeds in post-emergence application WE = expected response by means of the Colby formula W =• observed response Expected control of Galeopsis tetrahit, Matricaria inodora and Veronica persica was 80, 43 and 89 resp., clearly demonstrating that the combination was synergistic. Example 17A Herbicidal performance of the mixture WL 161616 + Flamprop-M-isopropyl (120 g a.i./ha + 700 g a.i./ha) against grass weeds in post-emergence application C I WE = expected response by means of the Colby formula W - observed response Expected control of Setaria viridis and Digitaria sanguinalis was 73 and 63 resp., clearly demonstrating that the combination was synergistic. Example 17B Herbicidal performance of the mixture WL 161616 + Flamprop-M-isopropyl (60 g a.i./ha + 700 g a.i./ha) against grass weeds in post-emergence application WE = expected response by means of the Colby formula W = observed response Expected control of Digitaria sanguinalis was 53, clearly demonstrating that the combination was synergistic.

Claims: C L A I M S 1. Herbicidal composition comprising a herbicidally acceptable carrier and/or surface active agent together with, as active ingredient, mixture of at least one aryloxypicolinamide compound of the general formula I in which Z represents an oxygen or sulphur atom; R represent a hydrogen or halogen atom or an alkyl or haloalkyl group; 2 R represents a hydrogen atom or an alkyl group; q is 0 or 1; 3 R represents a hydrogen atom or an alkyl or alkenyl group; the or each group X independently represents a halogen atom or an optionally subsituted alkyl or alkoxy group, or an alkenyloxy, alkynyloxy, cyano, carboxy, alkoxycarbonyl, (alkylthio)carbonyl, alkylcarbonyl, amido, alkylamido, nitro, alkylthio, haloalkylthio, alkenylthio, alkynylthio, alkylsulphinyl, alkylsulphonyl, alkyloximinoalkyl or alkenyloximinoalkyl group; n is 0 or an integer from 1 to 5; the or each group Y independently represents a halogen atom or an alkyl, nitro, cyano, haloalkyl, alkoxy or haloalkoxy group; and m is 0 or an integer from 1 to 5; together with a second component selected from:- a) a urea- ype herbicide; b) a triazine-type herbicide; c) a hydroxybenzonitrile herbicide; d) an aryloxyalkanoic acid herbicide; e) a dinitroaniline herbicide; f) a thiocarbamate herbicide; g) amidosulfuron; h) a diphenyl ether herbicide; i) a pyridazine herbicide; j) a fluorene carboxylic acid herbicide; k) a pyridyloxyacetic acid herbicide; and 1) an arylalanine herbicide. 2. Composition as claimed in claim 1, wherein the aryloxypicolinamide is of the general formula II 3. Composition as claimed in claim 1 or 2 wherein the second component is selected from chlortoluron, isoproturon, linuron, neburon, atrazine, cyanazine, simazine, bromoxynil, ioxynil, dichloroprop, diclofop, MCPA, mecoprop (CMPP) , pendimethalin, prosulfocarb, amidosulfuron, aclonifen, pyridate, flurenol, fluroxypyr, and flamprop-isopropyl. 4. Composition as claimed in claim 1, 2 or 3 wherein the ratio (by weight) of the aryloxypicolinamide to the second component is from 2:1 to 1:60. 5. Composition as claimed in any one of claims 1-4 wherein the second component is a urea or thiocarbamate herbicide and the ratio of AOP to that second component is 1:10 to 1:60. 6. Composition as claimed in any one of claims 1 to 4 wherein the second component is amidosulfuron or a pyridyloxyacetic acid and the ratio of AOP to that second component is 2:1 to 1:20. 7. Method of controlling the growth of weeds at a cereal locus which comprises applying to the locus an aryloxypicolinamide as defined in claim 1 or 2, and a second component selected from those defined in claim 1 or 3. 8. Method as claimed in claim 7 wherein the AOP is applied to the locus at a rate of 25 to 250 gai/ha. 9. Method as claimed in claim 7 or 8 wherein the second component is a urea or thiocarbamate herbicide and is applied to the locus at the rate of 1000-2500 gai/ha. 10. Method as claimed in claim 7 or 8 wherein the second component is amidosulfuron or a pyridyloxyacetic acid herbicide and is applied to the locus at the rate of 25 to 100 gai/ha.

Inventors: BALTRUSCHAT HELMUT, BALTRUSCHAT, HELMUT
Applicants: BALTRUSCHAT HELMUT, SHELL INT RESEARCH, SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
Application year: 1993
Main classification: A01N43
IPC codes: A01N33, A01N37, A01N39, A01N43, A01N45, A01N47, A01P13