STABLE FORMULATION

1 . A composition comprising

(a) a pesticidally effective amount of mineral oil; and

(b) a suspension concentrate comprising particulate sulfur suspended in an aqueous medium comprising at least one wetting agent wherein said particulate sulfur has a particle size diameter distribution of D 90 less than about 10 microns.

2 . The composition as claimed in claim 1 , wherein said particulate sulfur has a particle size less than 3 microns.

3 . The composition as claimed in claim 1 , wherein said aqueous medium additionally comprises at least one ingredient selected from at least one anti-foaming agent and at least one thickener.

4 . The composition as claimed in claim 1 , wherein said wetting agent is selected from nonionic surfactants such as alcohol ethoxylates for example of C 9 to C 15 of particularly primary alcohols, which may be linear or branched, particularly mono-branched, ethoxylates with from 5 to 30 moles of ethylene oxide; and alkoxylates of such alcohols particularly mixed ethoxylate/propoxylates which may be block or random mixed alkoxylates, typically containing from 3 to 10 ethylene oxide residues and from 1 to 5 propylene oxide residues, particularly where the polyalkoxylate chain is terminated with propylene oxide unit(s); polyoxyethylene/polyoxypropylene copolymers, particularly block copolymers, alkyl polysaccharides; anionic surfactants and isethionates, such as sodium cocoyl isethionate; naphthalene sulphonic acids or sulphosuccinates.

5 . The composition as claimed in claim 1 , wherein said wetting agent in present in an amount of about 0.1% to 5% by weight.

6 . The composition as claimed claim 3 , wherein said anti-foaming agent is selected from stearates; silicones; dimethyl polysiloxanes and ethoxylates.

7 . The composition as claimed 3 , wherein said anti-foaming agent is present in an amount of about 0.1% to about 5% by total weight of the composition.

8 . The composition as claimed in claim 1 comprising up to 10% of particulate sulfur suspended in an aqueous medium.

9 . The composition as claimed in claim 1 wherein the mineral oil component is selected from paraffinic mineral oil and refined petroleum oil.

10 . The composition as claimed in claim 9 , wherein said mineral oil component is present in an amount of 20-60% by weight.

11 . The composition as claimed in claim 3 , wherein the thickener is selected from a heteropolysaccharide or a synthetic or natural gum.

12 . The composition as claimed in claim 3 comprising at least one thickener in an amount of about 0.1% to about 5% by total weight of the composition.

13 . The composition as claimed in claim 1 comprising at least one surfactant selected from salts of naphthalenesulphonic acid/formaldehyde condensates, salts of condensates of naphthalenesulphonic acid, phenolsulphonic acid and formaldehyde preferably fatty alcohol ethoxylate and sodium naphthalene formaldehyde condensate.

14 . The composition as claimed in claim 13 , wherein said at least one surfactant is present in an amount of about 0.2 to about 5% by total weight of the composition.

15 . The composition as claimed in claim 1 comprising at least one anti-foaming agent selected from stearates; silicones; dimethyl polysiloxanes and ethoxylates.

16 . The composition as claimed in claim 1 comprising at least one biocide selected from dipropylene glycol, 1,2-bezisothiazolin-3-one and sodium hydroxide.

17 . The composition as claimed in claim 16 , where said at least one biocide is present in an amount of about 0.1 to about 0.5% by total weight of the composition.

18 . The composition as claimed in claim 1 additionally comprising at least another pesticide.

19 . The composition as claimed in claim 16 , wherein said at least another pesticide is selected from copper dithiocarbamate compounds such as thiram, ziram, mancozeb.

20 . A suspension concentrate formulation of sulfur comprising particulate sulfur suspended in an aqueous medium comprising at least one wetting agent wherein said particulate sulfur has a particle size diameter distribution of D 90 less than about 10 microns.

21 . The suspension concentrate formulation of sulfur as claimed in claim 19 , wherein said particulate sulfur has a particle size is less than 3 microns.

22 . The suspension concentrate formulation of sulfur as claimed in claim 19 , wherein said aqueous medium additionally comprises at least one ingredient selected from at least one anti-foaming agent and at least one thickener.

23 . A process for preparation of suspension concentrate of sulfur, said process comprising:

a) mixing a predetermined quantity of water, at least one wetting agent, optionally at least one anti-foaming agent along with raw sulfur;

b) grinding the mixture of step (a) and filtering through mesh of a predetermined size;

c) mixing a second quantity of water and at least one thickener in another vessel and obtaining a thickener premix;

d) mixing the thickener premix of step (c) and ground sulfur of step (b) in another vessel; and

e) filtering the mixture of step (d) through a predetermined mesh size.

24 . The process as claimed in claim 23 , wherein the predetermined mesh size in step (b) is about 250 μm.

25 . The process as claimed in claim 24 , wherein the predetermined mesh size in step (e) is about 100 μm.

26 . The process as claimed in claim 23 wherein step (a) comprises additionally mixing an insecticidally effective amount of mineral oil.

27 . A method of treating a locus, said method comprising subjecting the locus to a first treatment, at the beginning of an agricultural season, with a formulation comprising (a) an insecticidally effective amount of mineral oil; and (b) a suspension concentrate comprising particulate sulfur suspended in an aqueous medium, said aqueous medium additionally comprising at least one excipient selected from at least one wetting agent, at least one anti-foaming agent and at least one thickener wherein said particulate sulfur has a particle size diameter distribution of D 90 less than about 10 microns.

28 . The method as claimed in claim 27 comprising subjecting the locus to a second pesticide treatment.

29 . The method as claimed in claim 28 , wherein said second treatment is carried out about one week subsequent to the first treatment.

30 . The method as claimed in claim 27 comprising subjecting the locus to a third pesticide treatment.

31 . The method as claimed in claim 30 , wherein said third treatment is carried out after one week from the second treatment.

32 . The method as claimed in claim 28 , wherein said second and third treatments comprise treating the first or second treated locus respectively with an effective amount of a second or third pesticide.

33 . The method as claimed in claim 28 , wherein said second pesticide is selected from an emulsifiable concentrate formulation of mineral oil or a granular formulation of sulfur.