HERBICIDAL COMBINATION CONTAINING TRIAFAMONE AND INDAZIFLAM

Abstract

The invention relates to a herbicide combination containing components (A) and (B) where (A) being the compound and the salts thereof described by formula (A):

##STR00001##

and (B) being the compound and stereoisomers thereof described by formula (B):

##STR00002##

Claims

1. A herbicide combination, comprising components (A) and (B), where (A) comprises a compound and/or a salt thereof of formula (A): ##STR00005## and (B) comprises a compound and/or a stereoisomer thereof of formula (B): ##STR00006##

2. The herbicide combination according to claim 1, wherein the herbicide components, with respect to one another, are present in a weight ratio of: (range component A):(range component B) (1-100):(0.1-100), optionally (1-25):(0.5-50), optionally (1-10):(1-20).

3. The herbicide combination according to claim 1, comprising the herbicide components in an application rate per application: component A: 3-3600 g of AS/ha, optionally 5-2000 g of AS/ha, optionally 5-100 g of AS/ha; component B: generally 1-500 g of AS/ha, optionally 3-300 g of AS/ha, optionally 5-100 g of AS/ha.

4. The herbicide combination according to claim 1, comprising an effective amount of components (A) and (B) and/or additionally one or more further components selected from the group consisting of agrochemically active compounds of a different type, formulation auxiliaries and additives customary in crop protection.

5. A method for control of unwanted vegetation which comprises applying the components (A) and (B) of the herbicide combination, as defined in claim 1, jointly or separately to one or more harmful plants, seed or vegetative propagation organs thereof, and/or to an area where said plants grow.

6. The process according to claim 5 for controlling unwanted vegetation in monocotyledonous crops optionally comprising cereal, optionally wheat, barley, rye, oats, crossbreeds thereof optionally triticale, rice (planted or sown under upland or paddy conditions with Indica and/or Japonica species and also hybrids/mutants/GMOs), maize, millet and sugar cane, and/or in dicotyledonous crops optionally comprising sugar beet, sunflowers, soya bean, potato, tomatoes, peas, beans optionally, bush bean and broad bean), carrots and fennel; and/or in permanent crops and/or on one or more areas of permanent crops (fruit plantations and plantation crops, optionally pome and stone fruit, viticulture, hops, citrus trees, mango, olives, coffee, cacao, tea, soft fruit, banana, cooking banana, almond, walnut, pecan, hazelnut, pistachio trees, oil palms, rubber trees); optionally in permanent crops and/or on one or more areas of permanent crops and/or in rice crops.

7. A product comprising the herbicide combination defined in claim 1 for controlling unwanted vegetation.

Description

A. GENERAL FORMULATION EXAMPLES

[0104] a) A dust is obtained by mixing 10 parts by weight of an active compound/active compound mixture and 90 parts by weight of talc as inert substance and comminuting the mixture in a hammer mill. [0105] b) A wettable powder which is readily dispersible in water is obtained by mixing 25 parts by weight of an active compound/active compound mixture, 64 parts by weight of kaolin-containing clay as inert substance, 10 parts by weight of potassium lignosulfonate and 1 part by weight of sodium oleoylmethyltaurate as wetting agent and dispersant, and grinding the mixture in a pinned-disc mill. [0106] c) A suspension concentrate which is readily dispersible in water is obtained by mixing 20 parts by weight of an active compound/active compound mixture with 5 parts by weight of tristyrylphenol polyglycol ether (Soprophor BSU), 1 part by weight of sodium lignosulfonate (Vanisperse CB) and 74 parts by weight of water, and grinding the mixture in a friction ball mill to a fineness of below 5 microns. [0107] d) An oil dispersion which is readily dispersible in water is obtained by mixing 20 parts by weight of an active compound/active compound mixture with 6 parts by weight of alkylphenol polyglycol ether (Triton X 207), 3 parts by weight of isotridecanol polyglycol ether (8 EO) and 71 parts by weight of paraffinic mineral oil (boiling range for example approx. 255 to 277 C.), and grinding the mixture in a friction ball mill to a fineness of below 5 microns. [0108] e) An emulsifiable concentrate is obtained from 15 parts by weight of an active compound/active compound mixture, 75 parts by weight of cyclohexanone as solvent and 10 parts by weight of oxyethylated nonylphenol as emulsifier. [0109] f) Water-dispersible granules are obtained by mixing [0110] 75 parts by weight of an active compound/active compound mixture, [0111] 10 parts by weight of calcium lignosulfonate, [0112] 5 parts by weight of sodium lauryl sulfate, [0113] 3 parts by weight of polyvinyl alcohol and [0114] 7 parts by weight of kaolin,
grinding the mixture in a pinned-disc mill, and granulating the powder in a fluidized bed by spray application of water as a granulating liquid. [0115] g) Water-dispersible granules are also obtained by homogenizing and precomminuting, in a colloid mill, [0116] 25 parts by weight of an active compound/active compound mixture, [0117] 5 parts by weight of sodium 2,2-dinaphthylmethane-6,6-disulfonate [0118] 2 parts by weight of sodium oleoylmethyltaurate, [0119] 1 part by weight of polyvinyl alcohol [0120] 17 parts by weight of calcium carbonate and [0121] 50 parts by weight of water,
then grinding the mixture in a bead mill and atomizing and drying the resulting suspension in a spray tower by means of a one-phase nozzle.

B. BIOLOGICAL EXAMPLES

Greenhouse Trials

[0122] a) Method

[0123] Post-emergence action against weeds

[0124] Seeds or rhizome pieces of mono- and dicotyledonous harmful plants and of crop plants were placed in sandy loam in plastic pots having a diameter of 4 cm, covered with soil and cultivated in a greenhouse under good growth conditions.

[0125] Ten to twenty days after sowing, the test plants were treated at the one- to three-leaf stage. The herbicide/active compound combinations according to the invention (mixture applications) formulated as suspensions and, in parallel tests, the correspondingly formulated individual active compounds (individual applications) were then sprayed onto the green parts of the plants in various dosages at a water application rate of 300 I/ha (converted).

[0126] After the test plants had been kept in the greenhouse under optimum growth conditions for a certain period of time (DAA, days after application), the herbicidal activity was assessed visually by comparison of treated and untreated plants. The percentages mean: 0%=no herbicidal activity, 100%=the plants die off completely.

[0127] The percentages from the treatments with the herbicides alone (individual applications) and with the combinations according to the invention (mixture applications) were employed to calculate interactions using the method of Colby. When the observed efficacies of the mixture applications exceed the formal sum of the values of the tests with individual applications, they also exceed the expected value according to Colby, which is calculated using the formula below (cf. S. R. Colby; in Weeds 15 (1967) pp. 20 to 22):

E=A+B(AB/ 100)

[0128] Here: [0129] A, B=activity of component A (triafamone) or B (indaziflam) in percent at a dosage of a and b, respectively, in g of AS/ha (gram of active substance per hectare). [0130] exp. expected value in % at a dosage of a+b g of ai/ha. [0131] b) Results

[0132] The abbreviations in the tables below have the following meanings: [0133] DAA=days after application [0134] g of AS/ha=grams of active substance per hectare [0135] % efficacy=herbicidal effect in percent [0136] meas.=measured values [0137] exp.=expected values according to Colby (calculation: see above) [0138] syn.%=difference (%) of measured value from expected value (%) (measured value minus expected value)/

TABLE-US-00001 TABLE 1 Herbicidal effect (% efficacy) against Triticum aestivum (9 DAA) % (g of AS/ha) Efficacy triafamone 20 13 10 0 5 0 2.5 0 indaziflam 40 63 20 48 10 23 5 23 meas. exp. syn. % triafamone + 20 +40 78 67 10 indaziflam 10 +20 60 48 13 10 +10 50 23 28 5 +40 83 63 20 5 +20 78 48 30 2.5 +40 75 63 13 2.5 +10 58 23 35 2.5 +5 45 23 23

TABLE-US-00002 TABLE 2 Herbicidal effect (% efficacy) against Lolium rigidum (9 DAA) % (g of AS/ha) Efficacy triafamone 20 18 10 0 5 0 2.5 0 indaziflam 20 70 10 63 meas. exp. syn. % triafamone + 20 +20 85 75 10 indaziflam 10 +20 83 70 13 5 +20 85 70 15 5 +10 75 63 13 2.5 +20 83 70 13

TABLE-US-00003 TABLE 3 Herbicidal effect (% efficacy) against Alopecurus myosuroides (17 DAA) % (g of AS/ha) Efficacy triafamone 5 50 2.5 25 indaziflam 20 75 10 60 5 15 meas. exp. syn. % triafamone + 5 +20 99 87 12 indaziflam 5 +5 85 57 28 2.5 +10 80 70 10 2.5 +5 62 36 26

TABLE-US-00004 TABLE 4 Herbicidal effect (% efficacy) against Viola tricolor (17 DAA) % (g of AS/ha) Efficacy triafamone 10 0 5 0 2.5 0 indaziflam 5 80 meas. exp. syn. % triafamone + 10 +5 90 80 10 indaziflam 5 +5 90 80 10 2.5 +5 97 80 16.5

TABLE-US-00005 TABLE 5 Herbicidal effect (% efficacy) against Zea mays (17 DAA) % (g of AS/ha) Efficacy triafamone 10 0 5 0 2.5 0 indaziflam 20 25 10 0 meas. exp. syn. % triafamone + 10 +20 70 25 45 indaziflam 5 +20 45 25 20 5 +10 10 0 10 2.5 +10 10 0 10

TABLE-US-00006 TABLE 6 Herbicidal effect (% efficacy) against Avena fatua (17 DAA) % (g of AS/ha) Efficacy triafamone 10 0 indaziflam 5 10 meas. exp. syn. % triafamone + 10 +5 28 10 18 indaziflam

TABLE-US-00007 TABLE 7 Herbicidal effect (% efficacy) against Hordeum murinum (17 DAA) % (g of AS/ha) Efficacy triafamone 20 0 5 0 2.5 0 indaziflam 20 40 meas. exp. syn. % triafamone + 20 +20 97 40 56.5 indaziflam 5 +20 75 40 35 2.5 +20 78 40 37.5

TABLE-US-00008 TABLE 8 Herbicidal effect (% efficacy) against Glycine max (17 DAA) % (g of AS/ha) Efficacy triafamone 10 0 2.5 0 indaziflam 10 73 5 50 meas. exp. syn. % triafamone + 10 +10 83 73 10 indaziflam 10 +5 60 50 10 2.5 +10 83 73 10 2.5 +5 65 50 15 [0139] c) Discussion of the results

[0140] The results show an unexpected synergism of the herbicide combination according to the invention, where in some cases the difference of the measured values to the corresponding expected values (syn.%) is quite considerable. It is noteworthy that the herbicidal efficacy of indaziflam (component B) was generally enhanced by triafamone (component A), which, at the dosages tested, was frequently ineffective as individual herbicide.