Plant protecting and regulating compositions – Plant growth regulating compositions – Plural active ingredients
Reexamination Certificate
2000-11-17
2002-05-14
Pryor, Alton (Department: 1616)
Plant protecting and regulating compositions
Plant growth regulating compositions
Plural active ingredients
C504S133000, C504S134000, C504S138000, C504S140000, C504S246000, C504S247000
Reexamination Certificate
active
06387848
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention concerns a non-aqueous, storage stable spreading oil (SO) formulation for crop protection active compounds and their use for combating pests, in particular for use in the application of a pesticide to aquatic environments.
However, hitherto pesticides have usually been applied to paddy-fields in the form of soluble, dispersible or absorbent granules which release the active ingredient into the water, or pour-on liquids, in particular emulsifiable concentrate formulations which disperse the active ingredient on the surface of the water (e.g. EP 0 206 987).
The European Patent Application EP 0 415 569 suggests a fungicidal composition for application to an aquatic environment comprising a solid carrier, fungicidal azoxystrobin (EP 0 382 375) as active ingredient and an oil in which said active ingredient is miscible or in which it is capable of being dispersed.
It is well known that the efficacy of plant protection agent can be higher if the active ingredient is applied in dissolved form rather than in a particulate form. One environmentally friendly way to apply an active ingredient in such a form would be dissolved in a plant oil. Unfortunately, most plant protection agents do not exhibit high solubilities in plant oils.
In view of an easy and safe handling and the necessity to improve the efficacy of plant protection agents, it is desirable to develop SO formulations for application in paddy-fields which contain comparably high concentrations of plant protection agents in a spreadable oil.
SUMMARY OF THE INVENTION
The present invention relates to a single-phase non-aqueous, concentrated SO for application of crop protection active compounds in aquatic environments comprising
(a) 15 to 400 g/L of one or more crop protection active compounds
(b) 300 to 700 g/L of one or more plant oils;
(c) 30 to 200 g/L of one or more polar aprotic organic solvents;
(d) optionally one or more methylated plant oils;
wherein the sum of all ingredients in the formulation adds up to one liter. Another aspect of the present invention is a process for the preparation of such a SO formulation.
Furthermore, the invention relates to a method for the control of diseases and/or pests in aquatic environments which comprises treating water with the inventive SO formulation, whereupon an oily film spreads over the water surface and subsequently contacts the plants, which are grown or planted before or later in this aquatic environment with the active ingredient(s) contained in said SO formulation.
Another aspect of the invention is a method for the enhancement of the efficacy of fungicidal triazolopyrimidines (e.g. EP 0 550 113), in particular the compounds of formula I
against rice diseases on paddy rice, which comprises applying an effective amount of one or more compounds of formula I dissolved in a mixture which essentially consists of
(i) one or more plant oils,
(ii) one or more polar aprotic organic solvents; and
(iii) optionally one or more methylated plant oils;
on the aquatic environment of said rice plants.
Those and other objects and features of the invention will become more apparent from the detailed description set forth hereinbelow.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
It has now been found, surprisingly, that stable single-phase non-aqueous SO formulations for application of crop protection active compounds in aquatic environment can be obtained, comprising
(a) 15 to 400 g/L of one or more crop protection active
(b) 300 to 700 g/L of one or more plant oils;
(c) 30 to 200 g/L of one or more polar aprotic organic solvents;
(d) optionally one or more methylated plant oils;
wherein the sum of all ingredients in the formulation adds up to one liter.
Through use of the SO formulation the biological activity of the active ingredients (a) against pests can be increased compared with conventional formulation types.
The term single-phase as used hereinabove and hereinbelow denotes that the crop protection active compounds (a) are completely dissolved in the homogenous mixture of (a), (b), (c) and optionally (d), without any phase separation.
The term pests as used hereinabove and hereinbelow includes but is not limited to plant pathogens, insects and weeds.
In principle, all crop protection active compounds can be used for the non-aqueous concentrated spreadable oil formulations according to the invention. Lipophilic crop protection active compounds are preferred.
As a rule, crop protection active compounds are used which are essentially insoluble in water and which are less than moderately soluble in a pure plant oil (b). A solubility of less than 100 g/L, in particular less than 50 g/L in pure solvent (b) is preferred.
The compositions of this invention can be applied to the aquatic environment of the plants with different active substances. These active substances can be either fertilizers or agents which donate trace elements or other preparations which influence plant growth or beneficial microorganisms used to improve plant nutrition such as Azetobacter, Rhizobia or azolla or he like. However, they are preferably selective herbicides, insecticides, fungicides, bactericides, nematicides, algicides, molluscicides, rodenticides, virucides, compounds inducing resistance into plants, biological control agents such as viruses, bacteria, nematodes, fungi and other microorganisms, repellents of birds and animals, and plant growth regulators, or mixtures of several of these preparations.
Chemical crop protection compounds which are solid at room temperature are preferred, in particular those with a melting point of higher than 50° C.
Mixtures of different biologically active compounds can have a broader spectrum of activity than a single compound alone. Furthermore, these can exhibit a synergistic effect compared with the single active ingredients. In a preferred embodiment, the formulation of the present invention can be used with a mixture of active ingredients. In the case of mixtures all of the active ingredients (a) are dissolved in the solvent mixture of the SO formulation according to the invention.
Preferred fungicides for use in the compositions of the present invention are the commercially available compounds selected from the group consisting of:
AC 382042, anilazine, azoxystrobin, benalaxyl, benomyl, binapacryl, bitertanol, blasticidin S, bromuconazole, bupirimate, captafol, captan, carbendazim, carboxin, carpropamid, chlorbenzthiazon, chlorothalonil, chlozolinate, cycloheximide, cymoxanil, cypofuram, cyproconazole, cyprodinil, dichlofluanid, dichlone, dichloran, diclobutrazol, diclocymet, diclomezine, diethofencarb, difenoconazole, diflumetorim, dimethirimol, dimethomorph, diniconazole, dinocap, ditalimfos, dithianon, dodemorph, dodine, edifenphos, epoxiconazole, etaconazole, ethirimol, etridiazole, famoxadone, fenapanil, fenamidone, fenarimol, fenbuconazole, fenfuram, fenhexamid, fenpiclonil, fenpropidin, fenpropimorph, fentin, fentin acetate, ferimzone, fluazinam, fludioxonil, flumetover, fluquinconazole, flusilazole, flusulfamide, flutolanil, flutriafol, folpet, fuberidazole, furalaxyl, furametpyr, guazatine, hexaconazole, IKF-916, imazalil, iminoctadine, ipconazole, iprodione, isoprothiolane, iprovalicarb, kasugamycin, KH-7281, kitazin P, kresoxim-methyl, mepanipyrim, mepronil, metalaxyl, metconazole, methfuroxam, MON 65500, myclobutanil, neoasozin, nickel dimethyldithiocarbamate, nitrothalisopropyl, nuarimol, ofurace, organo mercury compounds, oxadixyl, oxycarboxin, penconazole, pencycuron, phenazineoxide, phthalide, polyoxin D, polyram, probenazole, prochloraz, procymidione, propamocarb, propiconazole, propineb, pyrazophos, pyrifenox, pyrimethanil, pyroquilon, pyroxyfur, quinomethionate, quinoxyfen, quintozene, spiroxamine, SSF-126, SSF-129, streptomycin, tebuconazole, tecloftalame, tecnazene, tetraconazole, thiabendazole, thifluzamide, thiophanate-methyl, thiram, tolclofosmethyl, tolylfluanid, triadimefon, triadimenol, triazbutil, triazoxide, tricyclazole, tridemorph, trifloxystrobin, triflumizole, triforine, triticonazole, val
Aven Michael
Hasui Hideaki
Motoyoshi Masatoshi
BASF - Aktiengesellschaft
Costello Charles F.
Pryor Alton
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