MXPA99009674A - Pesticidal composition - Google Patents
Pesticidal compositionInfo
- Publication number
- MXPA99009674A MXPA99009674A MXPA/A/1999/009674A MX9909674A MXPA99009674A MX PA99009674 A MXPA99009674 A MX PA99009674A MX 9909674 A MX9909674 A MX 9909674A MX PA99009674 A MXPA99009674 A MX PA99009674A
- Authority
- MX
- Mexico
- Prior art keywords
- spp
- formula
- percent
- composition
- active ingredient
- Prior art date
Links
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Abstract
There are described a pesticidal composition which comprises, in variable quantities, the pesticidally active compound of formula (A, pymetrozine), in free form or in the form of an agrochemically acceptable salt, and the pesticidally active compound of formula (B, pyriproxyfen), in free form or in the form of an agrochemically acceptable salt, and at least one auxiliary, a combination of the active ingredient (A) and (B), a method of controlling pests, a process for the preparation of the composition, its use, plant propagation material treated with the composition, and the use of the compound of formula (A) and the use of the compound of formula (B) for the preparation of the composition.
Description
PESTICIDE COMPOSITION
The present invention relates to a pesticide comprising a pesticidally active combination of active ingredients to a method for controlling pests using this composition, to a process for the preparation of the composition, to its use, to a plant propagation material treated with the composition, and the use of a compound of the formulas (A) and (B) below, for the preparation of the composition. In the literature, certain mixtures of active ingredients are proposed for the purposes of pest control. However, the biological properties of these known mixtures are not absolutely satisfactory in the field of pest control, which is why there is a need to provide other mixtures, especially those having synergistic properties, for example synergistic pesticidal properties, in particular to control insects and representatives of the order Acariña. This object is achieved according to the invention by providing the present composition.
The invention relates to a pesticidal composition comprising, in varying amounts, the pesticidally active compound of the formula: (A, pymetrozine)
in free form or in the form of an agrochemically acceptable salt, and the pesticidally active compound of the formula:
(B, pyriproxyfen)
in free form or in the form of an agrochemically acceptable salt, and at least one auxiliary. The compound (E) -4,5-dihydro-6-methyl-4- (3-pyridylmethylenamino) -1,2,4-riazin-3 (2H) -one (pymetrozine) of the formula (A), is known, for example, from The Pesticide Manual, 10th edition (1994), The British Crop Protection Council, London, page 868. The compound 4-phenoxyphenyl (RS) -2- (2-pyridyloxy) propyl ether (pyriproxyfen) is known from The Pesticide Manual, 10th Edition (1994), The British Crop Protection Council, London, page 887. The agrochemically acceptable salts of the compounds of the formulas (A) and (B) are, for example, acid addition salts of inorganic and organic acids, in particular hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, perchloric acid, phosphoric acid, formic acid, acetic acid, trifluoroacetic acid, oxalic acid, malonic acid, toluene sulfonic acid, or benzoic acid. Within the scope of the present invention, compositions comprising, as active ingredients, the compounds of formulas (A) and (B) in free form are preferred. The combination of active ingredients according to the invention comprises the active ingredient of the formula (A) and the active ingredient of the formula (B), preferably in a mixing ratio (weight ratio, molar weight ratio, or ratio of the LD50 values of the pests to be controlled in each case) from 1: 200 to 200: 1, in particular from 1:50 to 50: 1, more particularly in a ratio of between 1:20 and 20: 1 , especially between 10: 1 and 1:10, also preferably between 50: 1 and 3: 1, very especially between 40: 1 and 10: 1, also preferably between 2: 1 and 1: 2, and on the other hand in a ratio of 150: 1, 40: 1, or 30: 1, Ó 20: 1, Ó 20: 3, Ó 15: 1, Ó 10: 1, Ó 5: 1, Ó 5: 2, or 5: 3, Ó 5: 4, or 4: 1, Ó 4: 3, Ó 3: 1, Ó 3: 2, Ó 2: 1, Ó 1:20, or 1:10, or 1: 5, or 2: 5, or 3: 5, or 4: 5, or 1: 4, or 3: 4, or 1: 3, Ó 2: 3, Ó 1: 2, or 1: 1. The invention also relates to a combination, in varying amounts, of the pesticidally active compound of the formula (A) in free form or in the form of an agrochemically acceptable salt, with the pesticidally active compound of the formula (B) in free form or in the form of an agrochemically acceptable salt. Surprisingly, it has now been found that the combination of the active ingredient of the formula (A) with the active ingredient of the formula (B), not only causes the additive additive of the biocide and the physical properties that are to be expected in principle, but it generates a synergistic effect that, among other things, broadens the range of pesticidal activity of the two compounds: Surprisingly, it has now been found that, in particular, for example, the pesticidal activity of the compositions according to the invention is not only additive in comparison with the pesticide activities of the individual components (A) and (B), as can be expected essentially, but a synergistic effect is present. The term "synergistic" in the present context, however, is by no means restricted to the pesticidal activity, but the term is also related to other convenient properties of the compositions according to the invention, as compared to the individual components ( A) and (B). Examples of these convenient properties that may be mentioned are: an extension of the pesticide action spectrum, to include other pests, for example resistant strains, a reduced application concentration of the compounds of the formulas (A) and (B) sufficient control of the pests with the aid of the compositions according to the invention, including at an application concentration in which the individual compounds (A) and (B) are entirely ineffective; a convenient behavior after formulation and / or application, for example, after milling, sorting, emulsifying, dissolving, or dispersing; better storage stability; better stability to light; a more convenient degradation behavior; better toxicological or ecotoxicological behavior; or other advantages known to those skilled in the art. The compositions according to the invention are preventively and / or curatively valuable in the field of pest control, even at low concentration rates, while they are well tolerated by warm-blooded species, fish, and plants, and have a very convenient biocidal spectrum. The compositions according to the invention are active against all or some stages of development of normally sensitive but also resistant animal pests, such as insects and representatives of the order Acari a. The insecticidal and / or acaricidal activity of the compositions according to the invention can be manifested directly, that is, in the destruction of the pests, which takes place immediately or only after some time has elapsed, for example during the ecdysis, or indirectly, for example, at a reduced rate of oviposition and / or hatching, good activity corresponding to a rate of destruction (mortality) of at least 40 to 50 percent. The examples of the above-mentioned animal pests are: of the order of the Lepidoptera Acleris spp., Adoxophyes spp, Aegeria spp, Agrotis spp,
Alabama argillaceae, Amylois spp., Anticarsia gemmatalis, Archips spp., Argyrotaenia spp., Autographa spp., Busseola fusca, Cadra cautella, Carposina nipponensis, Chilo spp., Choristoneura spp.,
Clysia ambiguella, Cnaphalocrocis spp., Cnephasia spp., Cochylis spp., Coleophora spp., Crocidolomia binotalis, Cryptophlebia leucotreta, Cydia spp., Diatraea spp., Diparopsis castanea,
Earias spp., Ephestia spp., Eucosma spp., Eupoecilia ambiguella,
Euproctis spp., Euxoa spp., Grapholita spp., Hedya nubiferana,
Heliothis spp., Hellula undalis, Hyphantria cunea, Keiferia lycopersicella, Leucoptera scitella, Lithocollethis spp., Lobesia botrana, Lymantria spp., Lyonetia spp., Malacosoma spp., Mamestra brassicae, Manduca sexta, Operophtera spp., Ostrinia nubilalis,
Pammene spp., Pandemis spp., Panolis flammea, Pectinophora gossypiella, Phthorimaea operculella, Pieris rapae, Pieris spp., Plutella xylostella, Prays spp., Scirpophaga spp., Sesamia spp.,
Sparganothis spp., Spodoptera spp., Synanthedon spp., Thaumeto-poea spp., Tortrix spp., Trichoplusia ni and Y onoirieuta spp .; of the Order of the Coleoptera, for example, Agrietes spp., Anthonomus spp., Atomaria linearis, C aetocneina tibialis, Cosmopolites spp., Curculio spp., Dermestes spp., Diabrotica spp., Epilachna spp., Eremnus spp., Leptinotarsa decemlineata, Lissorhoptrus spp., Melolontha spp., Oryzaephilus spp., Otiorhynchus spp., Phlyctinus spp., Popillia spp., Psyllio-des spp., Rhizopertha spp., Scarabeidae, Sitophilus spp., Sitotroga spp., Tenebrio spp., Tribolium spp. and Trogoderma spp .; of the order of the Orthopterans, for example, Blatta spp., Blattella spp., Gryllotalpa spp., Leucop-haea maderae, Locusta spp., Periplaneta spp. and Schistocerca spp .; of the order of the Isoptera, for example Reticuliter-month spp.; of the order of the Psocópteros, for example, Liposcelis SP _; of the order Anoplura, for example, Haematopinus sp. ,
Linognathus spp., Pediculus spp., Pemphigus spp. And Phylloxera sp. P .; of the order of the Malophagous, for example Damalin spp. and Trichodeetes spp.; of the Order of the Thysanoptera, for example, Frankliniella spp .., Hercinothrips spp., Taeniotnrips spp., Thrips pal i, Thrips
of the Order of the Heteroptera, for example Cjiie
= pp. , Distantiella theobroma, Dysdercus sp_p_. , Euchis us spp.
Eurygas er spp. , Leptocorisa spp., Nezara spp. , Piesma spp. , Rhodnius
of the order of the Homoptera, for example Aleurothrixus floccosus, Aleyrodes brassicae, Aonidiella spp. , Aphididae, Aphi =.
spp., Aspidiotus spp., Bemisia tabaci, Ceroplaster spp., Chrysomphalus aonidium, ChrysQmphalus dictyQspermi, Coccus hesperidum, Empoasca spp., Eriosoma lanigerum, Erythroneura spp. ,
Gascardia spp., Laodelphax spp., Lecanium corni, Lepidosaphes spp., Macrosiphus spp., Myzus spp., Nephotettix spp., Nilaparvata
Lacaspis spp., PseudOCQCCUS spp., Psylla spp., Pulvinaria
spp., Scaphoideus spp. , Schizaphis spp. , Sitobion spp. , Trialeu-rodes vaporariorum, Trioza erytreae and Unaspis citri; of the order of Hymenoptera, for example, Acro y-rmex, Atta spp. , Cephus spp. , Diprion spp. , Diprionidae, Gilpinia polytQ a, Hoplocampa spp., Lasius spp., Monomorium ptiaraonia,
Neodiprion sp. , Solenopsis spp. and Yespa spp.; of the order of the dipterans, for example, Aedes spp. ,
Antherigona soccata, Bibio hortulanus, Calliphora erythrocephala,
Ceratitis spp., Chryso yia spp., CJJLL = X spp., Cuterebra spp.,
Dacus sp. , DrosQphila melanogaster, Fannia spp., Gastrophilus spp., Glossina spp. , Hypoderma spp. , HyppQbosca spp., Liriomyza spp., Lucilia spp. , Melanagromyza spp., Musca sp. , Oestrus spp. , Qrseolia spp. , Qscinella frit, Pegomyia hyoscyami, Phorbia spp. , Rhagoletis pomonella, Sciara spp. , Stomoxys spp. , Tabanus spp. , Tannia spp. and Tipula spp.; of the order of the Siphonaptera, for example, Cera-tophyllus spp. and Xenopsylla cheopis;
of the order Tisanura, for example, Lepisma saccharina and of the order Acariña, for example Acarus siró, Steelworks sheldoni, Amblyomma spp. , Argas spp. , Boophilus spp. , Brevipalpus = pp., Bryobia praetiosa, Calipitrimerus spp., Chorioptes spp. ,
Dermanyssus gallinae, Eotetranychus carpini, Eriophyes spp.,
Hyalomma spp. , Ixodes spp. , Qlygonychus pratensis, QrnithQdorQS spp., Panonychus spp. , Phyllocoptruta spp., PolyphagotarsQnemus spp., Psoroptes spp., Rhipicephalus spp., Rhizoglyphus spp., Sarcoptes spp. , Tarsonemus spp. and Te ranychus spp. Especially the representatives of the Acariña order can be controlled within the scope of the present invention. These include, in particular, Aculus sp. , in particular A. schlechtendali; Brevipal-pus spp. , in particular B_. californicus and B. phoenicis; Phyllo-coptruta app ... in particular p_. oleivora; Eriophyes spp., In particular E. vitis; Panonychus sp. , in particular P. ulmi and P_ ^ cLiri; Eotetranychus spp. , in particular E. carpini and E. orienta-lis; PQlyphagotarsonemus spp., In particular P_. latus; and Te-tranychus spp., in particular t_ urticae, T_, cinnabarinus and 1. Kanzawai Mixtures of active ingredients according to the invention allow pests of the aforementioned type, which are found in particular in plants, especially in useful and ornamental plants in agriculture, in horticulture, to be controlled, that is, to be contained or destroyed. and in forests, or in the organs of these plants, such as fruits, flowers, foliage, stems, tubers, or roots, protecting even the organs of plants that grow at a later point of time in some cases, against these pests. The mixtures of active ingredients according to the invention can be conveniently employed to control pests in rice, cereals, such as corn or sorghum; in fruit, for example fruit of grapefruit, hard fruit and soft fruit, such as apples, pears, plums, peaches, almonds, cherries, and berry, for example strawberries, raspberries, and blackberries; in leguminous plants, such as beans, lentils, peas, and soybeans; in oil crops, such as oil seed rape, mustard, poppies, olives, sunflowers, coconuts, castor beans, cocoa, and peanuts; in cucurbits, such as pumpkins, cucumbers, and melons; in fiber plants, such as cotton, linen, hemp, and jute; in citrus fruit, such as oranges, lemons, grapefruits, and tangerines; in vegetables, such as spinach, lettuce, asparagus, cabbages, carrots, onions, tomatoes, potatoes, and peppers; in representatives of the laurel family, such as avocado, cinnamon, and camphor; or in tobacco, nuts, coffee, aubergines, sugar cane, tea, pepper, vines, hops, the plant family, latex plants, or ornamentals, especially rice, corn, sorghum, grapefruit and hard fruit, legume plants, Cucurbits, cotton, citrus fruits, vegetables, aubergines, vines, hops, or ornamentals, particularly in corn, sorghum, apples, pears, plums, peaches, beans, peas, soybeans, olives, sunflowers, coconuts, cocoa, peanuts, cucumbers , pumpkins, citrus fruit, cabbages, tomatoes, potatoes, vines, or cotton, especially preferably in rice, vines, citrus, apples, pears, tomatoes, and cotton, in a very preferable way in rice. Other fields of application of the mixtures of active ingredients according to the invention are the protection of the stored products and of the stores and of the materials, and in the hygiene sector, in particular the protection of domestic animals and livestock against pests of the aforementioned type. Depending on the intended objectives and the prevailing circumstances, the pesticides, according to the invention, are emulsifiable concentrates, suspension concentrates, directly sprayable or dilutable solutions, coatable pastes, diluted emulsions, sprayable powders, soluble powders, dispersible powders, powders. wettable, powders, granules, or encapsulations in polymeric substances, all of which comprise the compound of the formula (A) and the active ingredient (B). In these compositions, the active ingredients are used together with at least one of the auxiliaries conventionally used in the formulation art., such as extenders, for example solvents or solid carriers, or such as surface activity compounds (surfactants). Solvents, solid carriers, surface active compounds, nonionic surfactants, cationic surfactants, and suitable anionic surfactants are, for example, the same as those mentioned in European Patent Number EP-A-736252. As a rule, the compositions comprise from 0.1 to 99 percent, in particular from 0.1 to 95 percent of a mixture of the active ingredient of the formula (A) with the active ingredient of the formula (B), and from 1 to 99.9 by percent, in particular from 5 to 99.9 percent of - at least - a solid or liquid auxiliary, it being possible for the surfactants to, as a rule, add up to 0 to 25 percent, in particular from 0.1 to 20 percent of the compositions (the percentage means in each case percent by weight). Although concentrated compositions are preferred as commercially available articles, the end users use, as a rule, dilute compositions having considerably lower concentrations of the active ingredient. Preferred compositions are compounded in particular as follows: (% = percent by weight): Emulsifiable Concentrates: Mixture of (A) and (B): from 1 to 90 percent, preferably from 5 to 20 percent. Surfactant: from 1 to 30 percent, preferably from 10 to 20 percent. Solvent from 5 to 98 percent, preferably from 70 to 85 percent.
Powders: Mixture of (A) and (B) from 0.1 to 10 percent, preferably from 0.1 to 1 percent. Solid vehicle: from 99.9 to 90 percent, preferably from 99.9 to 99 percent.
Concentrates for suspension; Mixture of (A) and (B): from 5 to 75 percent, preferably from 10 to 50 percent. Water: from 94 to 24 percent, preferably from 88 to 30 percent. Surfactant: from 1 to 40 percent, preferably from 2 to 30 percent.
Wettable powders; Mixture of (A) and (B) from 0.5 to 90 percent, preferably from 1 to 80 percent. Surfactant from 0.5 to 20 percent, preferably from 1 to 15 percent. Solid vehicle: from 5 to 99 percent, preferably from 15 to 98 percent.
Granules; Mixture of (A) and (B) from 0.5 to 30 percent, preferably from 3 to 15 percent. Solid vehicle: from 99.5 to 70 percent, preferably from 97 to 85 percent.
The compositions according to the invention may also comprise additional solid or liquid auxiliaries, such as stabilizers, for example epoxidized or non-epoxidized vegetable oils (for example, coconut oil, rapeseed oil, or epoxidized soybean oil), antifoaming agents. , for example silicone oil, preservatives, viscosity regulators, binders and / or viscosifiers, and also fertilizers, or other active ingredients to achieve specific effects, for example bactericides, fungicides, nematocides, molluscides, or herbicides. The compositions according to the invention are prepared in a known manner, for example before being mixed with the auxiliary (auxiliaries), by grinding, screening, and / or compressing an active ingredient or the mixture of active ingredients, for example to give a specific particle size, and also by intimate mixing and / or milling of the mixture of active ingredients with the auxiliary (the auxiliaries). Accordingly, the invention also relates to the process for the preparation of the compositions. The invention also relates to the methods of application for the compositions, ie the methods for controlling pests of the aforementioned type, such as spraying, wetting, atomizing, dusting, brushing, seed coating, dispersing or watering, which will be selected to suit the intended objectives and the prevailing circumstances, and to the use of the compositions for controlling pests of the aforementioned type. Typical concentration rates are between 0.1 and 1,000 ppm, preferably between 0.1 and 500 ppm of active ingredient. The concentration of application can vary within wide ranges, and depends on the consistency of the soil, the type of application (foliar application, seed coating, use in the seed furrow), the crop plant, the pest that is going to control, the climatic circumstances that prevail in each case, and other factors determined by the type of application, the time of application, and the white crop. The application concentrations per hectare are generally from 1 to 2,000 grams of active ingredient mixture per hectare, in particular from 10 to 1,000 grams / hectare, preferably from 20 to 600 grams / hectare, particularly preferably from 20 to 60 grams. 200 grams / hectare. A preferred method of application in the field of crop protection is the application to foliage of plants (foliar application), depending on the frequency and the concentration of application of the danger of infestation with the pest in question. In an alternative way, the active ingredients can reach the plants through the root system (systemic action), flooding the plant site with a liquid composition, or incorporating the active ingredients in solid form in the place of the plants, for example on the ground, for example in the form of granules (application to the ground). In the case of flooded rice, these granules can be introduced in the field of flooded rice. The compositions according to the invention are also suitable for protecting the propagation material from plants, for example seeds, such as fruits, tubers, or grains, or nurse plants, against animal pests. The propagation material can be treated with the composition before being planted, for example the seeds can be coated before being planted. In an alternative way, the active ingredients according to the invention can be applied to the seed grains (coating), either by soaking the grains in a liquid composition, or by coating them with a solid composition. In an alternative way, the composition can be applied to the application site when the propagation material is planted, for example in the seed furrow in the case of sowing. The invention further relates to these methods of treatment for the propagation material of plants, and to the plant propagation material thus treated. The following examples are intended to illustrate the invention. They do not limit the invention.
Formulation examples (% = percent by weight, proportions of active ingredients = proportions by weight).
Example Fl; Concentrates for emulsion a) b) c) Mixture of active ingredients [ratio of the compound of the formula (A) to the compound of the formula (B): 2: 5] 25% 40% 50% Dodecylbenzenesulfonate calcium 5% 8% 6 % polyethylene glycol ether of castor oil (36 moles of ethylene oxide) 5% -tributylphenyl polyethylene glycol ether (30 moles of ethylene oxide) - 12% 4%
Cyclohexanone - 15% 20%
Mixture of xylenes 65% 25% 20% Emulsions of any desired concentration can be prepared from these concentrates by dilution with water.
Example F2; Solutions a) b) c) d) Mixture of active ingredients (A: B = 150: 1) 80% 10% 5% 95% ethylene glycol monomethyl ether 20% - - -polyethylene glycol, molecular weight: 400 - 70% N -methyl-2-pyrrolidone - 20% epoxidized coconut oil - - 1% 5% Petroleum ether (boiling scale: 160 ° C-190 ° C) - - 94%
The solutions are suitable for use in the form of microdroplets.
Example F3: Granules a) b) c) d) Mixture of active ingredients (A: B = 2: 5) 5% 10% 8% 21% Kaolin 94% 79% 54%
Highly dispersed silica 1% 13% 7% Atapulgite 90% 18% The active ingredients are dissolved together in dichloromethane, the solution is sprayed on the vehicle, and the solvent is subsequently evaporated in vacuo.
Example F4; PQIVQB a) b) Mixture of active ingredients (A: B = 4: 1) 2% 5% Highly dispersed silica 1% 5% Talcum 97% Kaolin 90% Ready-to-use powders are obtained by intimately mixing the vehicles with the active ingredients.
Example F5; Umectable powders a) b) c)
Mixture of active ingredients (A: B = 5: 3) 25% 50% 75%
% sodium lignosulfonate 5% lauryl sodium 3% 5% sodium di-isobutylnaphthalenesulfonate - 6% 10%
Octipentil polyethylene glycol (7 to 8 moles of ethylene oxide) - 2% - Highly dispersed silica 5% 10% 10%
Kaolin 62% 27% The active ingredients are mixed with the additives, and are completely milled in a suitable mill. This gives wettable powders that can be diluted with water to give suspensions of any desired concentration.
Example F6; Concentrate for emulsion Mixture of active ingredients (150: 1) 10% Octylphenyl polyethylene glycol ether (4 to 5 moles of ethylene oxide) 3% Calcium dodecylbenzenesulfonate 3% Polyglycol Ether of castor oil (36 moles of ethylene oxide) 4% Cyclohexanone 30% Mixture of xylenes 50% Emulsions of any desired concentration can be prepared from this concentrate by dilution with water.
Example_FZ_ Powders a) b) Mixture of active ingredients (6: 1) 5% 8% Talc 95% Kaolin - 92% Ready-to-use powders are obtained by mixing the active ingredients with the vehicle, and grinding the mixture in a mill suitable.
Example F8: Granules for extruder Mixture of active ingredients (3: 1) 10% Sodium lignosulfonate 2% Carboxymethylcellulose 1% Kaolin 87% The active ingredients are mixed with the additives, and the mixture is milled and moistened with water. This mixture is extruded, granulated, and subsequently dried in a stream of air. Example F9; Coated granules Mixture of active ingredients (4: 1) 3% Polyethylene glycol (molecular weight: 200) 3% Kaolin 94% In a mixer, the finely ground active ingredients are uniformly applied to the kaolin, which has been moistened with polyethylene glycol. This gives coated granules free of dust.
FIO example; Concentrate for suspension Mixture of active ingredients (150: 1) 40% Ethylene glycol 10% Nonylphenyl polyethylene glycol ether (15 moles of ethylene oxide) 6% Sodium lignosulfonate 10% Carboxymethylcellulose 1% Aqueous formaldehyde solution at 37 percent 0.2% Oil silicone in the form of a 75 percent aqueous emulsion 0.8% Water 32% The finely ground active ingredients are intimately mixed with the additives. This gives a suspension concentrate from which suspensions of any desired concentration can be prepared by dilution with water. Often, it is more convenient to formulate the active ingredient of the formula (A) and the component (B) in an individual way, and then combine them in the applicator in the desired mixing ratio in water as a "container mixture" shortly before of the application.
Biological Examples (% = percent by weight, unless otherwise specified). A pesticidally synergistic effect is always present when the activity of the combination of the active ingredient of the formula (A) with the active ingredient of the formula
(B) exceeds the total of the activities of the active ingredients when applied individually. EA? > X + Y (I) The expected pesticidal action EA2 for a combination of two pesticides, however, can also be calculated as follows (see COLBY, SR, "Calculating synergistic and antagonistic response of herbicide combinations", eeds 15, pages 20 - 22, 1967): EA2 = X + Y (100-X) (II) 100
In this formula, X = percentage of mortality when treated with the compound of the formula (A) at an application concentration of p kilograms per hectare compared to the untreated control (= 0 percent). Y = percentage of mortality when treated with the compound of the formula (B) in an application concentration of q kilograms per hectare compared to the untreated control. EA -] _, EA2 = expected pesticidal activity (percentage of mortality compared to the untreated control) after treatment with the compound of the formula (A) and the compound of the formula (B) at an application concentration of + q kilograms of active ingredient per hectare. If the activity actually observed exceeds the expected value EAX or EA2, synergism is present. The synergistic effect of the combinations of the active ingredient of the formula (A) with the active ingredient of the formula (B) is demonstrated in the following examples:
Example Bl; Activity against Bemisia tabaci Dwarf bean plants are placed in gauze cages and populated with adult Bemisia tabaci. After oviposition has taken place, all adults are removed. 10 days later, the plants, together with the nymphs on them, are sprayed with an aqueous suspension spray mixture comprising 50 ppm of active ingredient mixture. After an additional 14 days, the hatching rate of the eggs is evaluated as a percentage, compared to untreated control batches. In this test, the combinations of the active ingredient of the formula (A) with the active ingredient of the formula (B), have a synergistic effect. In particular, the combination of the active ingredient of the formula (A) with the active ingredient of the formula (B) in a ratio of 150: 1 and in a ratio of 2: 5, has an activity greater than 80 percent.
Example B2; Activity against caterpillars Spodoptera li ttoralis Young soybean plants are sprayed with an aqueous emulsion spray mixture comprising 400 ppm of the active ingredient mixture. After the spray coating has dried over, the soybean plants are populated with 10 caterpillars in the third Spodoptera li ttoralis moult, and placed in a plastic container. The test is evaluated three days later. The reduction in the population, or the reduction in the damage by feeding, is determined in percentage (% of activity), comparing the number of dead caterpillars and the damage by feeding in the treated plants, with those in the untreated plants. In this test, the combinations of the active ingredient of the formula (A) with the active ingredient of the formula
(B) have a synergistic effect. In particular, the combination of the active ingredient of the formula (A) with the active ingredient of the formula (B) in a ratio of 4: 1 and in a ratio of 2: 1 has an activity greater than 80 percent.
Lobesia botrana eggs that have been deposited on filter paper are briefly immersed in a test solution comprising 400 ppm of the mixture of active ingredients to be tested in acetone / water. After the test solution has been dried, the eggs are incubated in petri dishes. After 6 days, the hatching rate of the eggs is evaluated as a percentage, in comparison with the untreated control batches (percentage of reduction in the hatching index). In this test, the combinations of the active ingredient of the formula (A) with the active ingredient of the formula (B) have a synergistic effect. In particular, the combination of the active ingredient of the formula (A) with the active ingredient of the formula (B) in a proportion of 4: 1 and in a ratio of 2: 5, has an activity greater than 80 percent.
Example B4; Activity against Pananychus ulmi (Resistant to QP and car.) Apple seedlings are populated with Panonychus ulmi adult females. After 7 days, the infected plants are sprayed until moistened by dripping with an aqueous emulsion spray mixture comprising 400 ppm of the compound to be tested, and are grown in the greenhouse. After 14 days, the test is evaluated. The reduction in the population is determined as a percentage (percentage of activity), comparing the number of dead red mites in the treated plants, with that in the untreated plants. In this test, the combinations of the active ingredient of the formula (A) with the active ingredient of the formula (B), have a synergistic effect. In particular, the combination of the active ingredient of the formula (A) with the active ingredient of the formula (B) in a ratio of 2: 5, 4: 1, and 1: 2, has an activity greater than 80 percent.
Example B5: Activity against Tetranychus urticae Young bean plants are populated with a mixed population of Tetranychus urticae, and one day later, they are sprayed with an aqueous emulsion spray mixture comprising 400 ppm of the active ingredient. The plants are subsequently incubated for 11 days at 24 ° C, and then evaluated. The reduction in the population is determined in percentage (percentage of activity) by comparing the number of eggs, larvae, and dead adults in the treated plants, with that in the untreated plants. In this test, the combinations of the active ingredient of the formula (A) with the active ingredient of the formula (B) have a synergistic effect. In particular, the combination of the active ingredient of the formula (A) with the active ingredient of the formula (B) in a ratio of 3: 5, 1: 2, and 1: 1 are very effective.
Claims (11)
1. A pesticidal composition comprising, in varying amounts, the pesticidally active compound of the formula:
(A, pymetrozine) in free form in the form of an agrochemically acceptable salt, and the pesticidally active compound of the formula:
(B, pyriproxyfen) in free form or in the form of an agrochemically acceptable salt, and at least one auxiliary. 2. A composition according to claim 1, which comprises, as active ingredients, the compounds of the formula (A) and the formula (B), in free form. 3. A method for controlling pests, which comprises applying a composition as described in any of claims 1 and 2 to the pests or their environment.
4. A method according to claim 3 for controlling pests of the Acariña order.
5. A method as claimed in any of claims 3 or 4, for the protection of propagation material of plants, where the propagation material or the place of planting of the propagation material is treated.
6. A process for the preparation of a composition according to any of claims 1 and 2, wherein the active ingredients are intimately mixed with the auxiliary (the auxiliaries).
7. A plant propagation material treated according to the method described in claim 5.
8. The use of a composition as described in any of claims 1 and 2, in a method as described in any of the claims. 3 to 6.
9. The use of a compound of the formula (A), in free form or in the form of an agrochemically acceptable salt, for the preparation of a composition as described in any of claims 1 and 2.
10. The use of a compound of the formula (B), in free form or in the form of an agrochemically acceptable salt, for the preparation of a composition as described in any of claims 1 and 2.
11. A combination, in varying amounts, of the pesticidally active compound of the formula: (A, pymetrozine), in free form or in the form of an agrochemically acceptable salt, with the pesticidally active compound of the formula: (B, pyriproxyfen), in free form or in the form of an agrochemically acceptable salt.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH929/97 | 1997-04-22 |
Publications (1)
Publication Number | Publication Date |
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MXPA99009674A true MXPA99009674A (en) | 2000-08-01 |
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