The present invention relates to a composition for the management and control of pests. More particularly, the present invention relates to a synergistic agrochemical composition comprising neonicotinoid compound and organophosphate compound for management and control of sucking pest of cotton and a process for preparation of said composition.

BACKGROUND OF THE INVENTION

Pests are destructive to crop plants and have negative impact on the agricultural produce. In order to ensure that agricultural production continues to flourish and grow, various combinations of pesticides are used by farmers to control pests of plant. However, pest resistance has become progressively more widespread and has become a serious threat to the agricultural production and future success of pest control using chemicals.

Several combinations have been developed and are in use currently for the management of sucking pests of cotton for e.g. imidacloprid and acephate, monocrotophos and acephate, acetamiprid and acephate etc. Due to non-judicious use of the hitherto known pesticides, the pests develop resistance against chemicals, thereby making it difficult to manage or control them.

The pesticides or combination of pesticides can be applied in different ways for example sequential application, tank-mix application and pre-mix application. In sequential application, farmers use different pesticides, wherein the pesticide selection is not based on the technical knowhow and pesticides having the same mode of action are being used, which leads to resistance development. In tank-mix application, farmers use different combinations of pesticides, most of the times without having training to properly mix products. Homemade tank mixes may therefore not be as stable as a pre-mix. The tank-mix usually results in non-judicious use of individual pesticides and end up with poor pest control. Moreover, the tank mixture is less convenient and potentially hazardous to people who are not trained to properly mix products.

The pre-mix application is a combination of two or more pesticides as active ingredients but the rates of the active ingredients are unchangeable, the components rates and formulation are optimized during development, hence no mixing or stability issue exists. The pre-mix application also helps in reducing the development of insecticide resistance.

The sequential application and tank-mix application of pesticides, when employed to address pests, result in development of insecticide resistance. The pre-mix application being convenient to use have not been applied so far for management of pests.

It has been found that the combination of a neonicotinoid compound preferably dinotefuran and an organophosphate compound preferably acephate provides synergies in controlling a broad pest spectrum and also contributes in Resistance Management (RM) for sustainability of the life of this chemistry. The different combination of pesticides known in the prior art have narrow insecticidal spectrum, acting against small number of sucking pests. However, there are certain rare combinations, which exhibit remarkable synergistic effect in addressing all the sucking pests. One such rare combination is of a neonicotinoid compound preferably dinotefuran and an organophosphate compound preferably acephate.

Neonicotinoids are a class of pesticides, which act on the nervous system of pests with lower toxicity to mammals. Its mechanism of action involves the disruption of the pest’s nervous system and thus paralyzing them.

Dinotefuran is a guanidine derivative belonging to the class of neonicotinoid compounds. The chemical formula of Dinotefuran is as below:


2-methyl-1-nitro-3-[(tetrahydro-3-furanyl) methyl] guanidine

Organophosphate compounds are esters of phosphoric acid. Acephate is an organophosphorous pesticide, used to control wide range of sucking and biting pests on many crop plants. The chemical formula of Acephate is as below:

N-(Methoxy-methylsulfanylphosphoryl) acetamide

The combination of a neonicotinoid such as dinotefuran and an organophosphate such as acephate as a pesticide exhibits synergistic effect in the management and control of pests. For example, the composition shows synergism against sucking pests of rice such as, not being limited to, Brown Plant Hopper and Green Leaf Hopper. However, a stable weight ratio for such combination has not been identified. Additionally, such combination has not been worked against the sucking pests of cotton. Hence, there is a need for improved agrochemical compositions which show synergistic effect, are easy to manufacture, are stable at a particular weight ratio and are able to manage and control sucking pests of cotton. Further, there is a need for improved methods for preparation and use of such improved agrochemical compositions. In particular, there is a need for improved compositions and methods that are stable, show synergistic effect and are efficient against sucking pests of cotton.

OBJECTS OF THE INVENTION

The primary object and advantage of the present invention is to provide a stable composition comprising a neonicotinoid compound and an organophosphate compound showing synergistic effect against a wide range of sucking pests in particular sucking pest of cotton crop plants, wherein the weight percentage of neonicotinoid compound is 0.1 to 20%, the weight percentage of organophosphate compound is 5 to 60%, and the weight percentage of agriculturally acceptable additives is 20 to 94.9%.

Another object and advantage of the present invention is to provide a stable composition comprising a neonicotinoid compound and an organophosphate compound showing synergistic effect against a wide range of sucking pests in particular sucking pests of cotton crop plants wherein the weight percentage of neonicotinoid compound is 1 to 8%, the weight percentage of organophosphate compound is 40 to 60%, and the weight percentage of agriculturally acceptable additives is 32 to 59 %.

Another object and advantage of the invention is to provide a composition that is effective against pesticide-resistant pests.

Yet another object and advantage of the invention is to provide a method for the preparation of said composition, which is effective against a wide range of sucking pests in particular against sucking pest of cotton crop plants.

Yet another object and advantage of the invention is to provide a method for the preparation of said composition, which is effective against a wide range of pesticide-resistant pests.

Another object and advantage of the invention is to provide a method of use of said composition, which is effective in controlling and managing a wide range of sucking pests in particular against sucking pest of cotton crop plants.

Yet another object and advantage of the invention is to provide a method of use of said composition, which is effective in controlling and managing a wide range of pesticide resistant pests.

Another object and advantage of the invention is to provide a use of said composition, which is effective in controlling and managing a wide range of sucking pests in particular against sucking pest of cotton crop plants.

Yet another object and advantage of the invention is to provide a use of said composition, which is effective in controlling and managing a wide range of pesticide resistant pests.

SUMMARY OF THE INVENTION

One aspect of the present invention relates to a stable synergistic agrochemical composition comprising neonicotinoid compound and organophosphate compound which is effective against a wide range of sucking pests in particular against sucking pest of cotton crop plants. wherein the weight percentage of neonicotinoid compound is 0.1 to 20%, the weight percentage of organophosphate compound is 5 to 60%, and the weight percentage of agriculturally acceptable additives is 20 to 94.9%.

Further, the present invention relates to a stable synergistic agrochemical composition comprising neonicotinoid compound and organophosphate compound which is effective against a wide range of sucking pests in particular against sucking pest of cotton crop plants, wherein the weight percentage of neonicotinoid compound is 1 to 8%, the weight percentage of organophosphate compound is 40 to 60%, and the weight percentage of agriculturally acceptable additives is 32 to 59 %.

Additionally, the invention relates to a stable synergistic agrochemical composition comprising neonicotinoid compound and organophosphate compound for management and control of wide range of pesticide resistant pests.

According to yet another aspect of the present invention there is provided a method for preparation of said synergistic agrochemical composition comprising neonicotinoid compound and organophosphate compound for management and control of wide range of sucking pests in particular sucking pests of cotton crop plants.

According to another aspect of the present invention, there is provided a method of application of said synergistic agrochemical composition comprising neonicotinoid compound and organophosphate compound for management and control of wide range of sucking pests in particular sucking pests of cotton crop plants.

DESCRIPTION OF THE INVENTION

The present invention relates to an agrochemical composition comprising neonicotinoid compound and organophosphate compound for management of a wide range of sucking pests in particular sucking pests of cotton crop plants.

The neonicotinoid compound is selected from such as, not being limited to, acetamiprid, clothianidin, dinotefuran, imidacloprid, nitenpyram, thiacloprid and thiamethoxam.

Preferably, the neonicotinoid compound is dinotefuran.

The content of neonicotinoid compound in said synergistic agrochemical composition is 0.1 to 20% by weight of the composition. In another embodiment, the content of neonicotinoid compound in said synergistic agrochemical composition is 1 to 8% by weight of the composition

The organophosphate compound is selected from such as, not being limited to, acephate, chlorpyrifos, demeton-S-methyl, dichlorvos, dimethoate, ethion, fenitrothion, fenthion, malathion, monocrotophos, oxydemeton-methyl , parathion, parathion-methyl, phenthoate, phorate, profenofos, quinalphos, triazophos.

Preferably, the organophosphate compound is acephate.

The content of organophosphate compound in said synergistic agrochemical composition is 5 to 60% by weight of the composition. In another embodiment, the content of organophosphate compound in said synergistic agrochemical composition is 40 to 60% by weight of the composition

The synergistic agrochemical composition of the present invention further include conventional agriculturally acceptable additives such as carrier, solvent, emulsifier, dispersant, wetting agent, binder, stabilizer, pH adjuster, and/or coloring agent.

The content of conventional agriculturally acceptable additives in said synergistic agrochemical composition is 20 to 94.9% by weight of the composition. In another embodiment, the content of conventionally agriculturally acceptable additives in said synergistic agrochemical composition is 32 to 59% by weight of the composition

The synergistic agrochemical composition of the present invention comprising neonicotinoid compound and organophosphate compound can be formed to several types of formulations such as not being limited to, water soluble powder (SP), water soluble granule (SG), emulsifiable concentrate (EC), wettable powder (WP), water dispersible granules (WG).

In one embodiment of the present invention, the composition of the water soluble powder (SP) formulation is provided. The typical composition of the water soluble powder formulation comprises the neonicotinoid compound, the organophosphate compound, spreader and water soluble carrier. Other formulation additives such as oil absorbent, stabilizer and colorant may be additionally used.

Suitable spreaders, not being limited to, are, for example, sugar esters (such as sorbitan monolaurate, polyoxyethylene sorbitan monolaurrate), polyoxyethylene alkyl ethers (such as polyoxyethylene lauryl ether or polyoxyethylene coconut fatty alcohol ether), polyoxyethylene aryl ethers (such as polyoxyethylene nonylphenyl ether or polyoxyethylene tristyrylphenyl ether), polyoxyethylene fatty acid esters (such as polyoxyethylene monolaurate or polyoxyethylene distearate), polyoxyethylene alkyl amines (such as polyoxyethylene stearyl fatty amine), dialkyl sulfosuccinates (such as sodium dioctyl sulfosuccinate) and alkylbenzenesulfonates (such as sodium dodecylbenzenesulfonate).

Suitable water soluble carriers, not being limited to, are, for example, inorganic salts (such as sodium carbonate, sodium sulfate, sodium chloride, ammonium sulfate and organic materials (such as lactose and urea).

Suitable oil absorbents, not being limited to, are, for example, precipitated silica and fumed silica.

Suitable stabilizer, not being limited, is, for example, epoxidized vegetable oil (such as epoxidized soybean oil).

Suitable colorants, not being limited, are, for example, azo dye, phthalocyanine dye and alizarin dye.

In another aspect of the present invention, a method for preparing the water soluble powder (SP) formulation of the composition is provided. In one embodiment, the water soluble powder formulation can be prepared by mixing the neonicotinoid compound, the organophosphate compound and water soluble carrier. If the organophosphate compound is liquid, it is preferable to use oil absorbent. Usually the neonicotinoid compound, the organophosphate compound, water soluble carrier and other formulation additives are mixed uniformly in a mixer and milled by a mill such as an air jet mill to median diameter 5 to 20 micrometer.

In another embodiment of the present invention, the composition of the water soluble granule (SG) formulation is provided. The typical composition of the water soluble granule formulation comprises the neonicotinoid compound, the organophosphate compound, spreader, water soluble carrier and binder. Other formulation additives such as oil absorbent, stabilizer and colorant may be additionally used.

Suitable spreaders, not being limited to, are, for example, sugar esters (such as sorbitan monolaurate, polyoxyethylene sorbitan monolaurate), polyoxyethylene alkyl ethers (such as polyoxyethylene lauryl ether or polyoxyethylene coconut fatty alcohol ether), polyoxyethylene aryl ethers (such as polyoxyethylene nonylphenyl ether or polyoxyethylene tristyrylphenyl ether), polyoxyethylene fatty acid esters (such as polyoxyethylene monolaurate or polyoxyethylene distearate), polyoxyethylene alkyl amines (such as polyoxyethylene stearyl fatty amine), dialkyl sulfosuccinates (such as sodium dioctyl sulfosuccinate) and alkylbenzenesulfonates (such as sodium dodecylbenzenesulfonate).

Suitable water soluble carriers, not being limited to, are, for example, inorganic salts (such as sodium carbonate, sodium sulfate, sodium chloride, ammonium sulfate and organic materials (such as lactose, urea).

Suitable binders, not being limited to, are, for example, polyvinyl alcohol, dextrin, denatured dextrin, soluble starch and carboxymethyl cellulose.

Suitable oil absorbents, not being limited to, are, for example, precipitated silica and fumed silica.

Suitable stabilizer, not being limited to, is, for example, epoxidized vegetable oil (such as epoxidized soybean oil).

Suitable colorants, not being limited to, are, for example, azo dye, phthalocyanine dye and alizarin dye.

In yet another aspect of the present invention, a method for preparing the water soluble granule (SG) formulation of the composition is provided. In one embodiment, the water soluble granule formulation can be prepared by mixing the neonicotinoid compound, the organophosphate compound, spreader, water soluble carrier and binder. If the organophosphate compound is liquid, it is preferable to use oil absorbent. Usually the neonicotinoid compound, the organophosphate compound, water soluble carrier and other formulation additives are mixed uniformly in a mixer and milled by a mill such as an air jet mill to median diameter 5 to 20 micrometer. The milled mixture is kneaded by adding 2 to 10 % of water, extruded and dried.

In another embodiment of the present invention, the composition of the emulsifiable concentrate (EC) formulation is provided. The typical composition of the emulsifiable concentrate comprises the neonicotinoid compound, the organophosphate compound, emulsifier and organic solvent. Other additives such as stabilizer and colorant may be additionally used.

Suitable organic solvents for use in emulsifiable concentrate, not being limited to, are, for example, aromatic hydrocarbons (such as alkylbenzenes, alkylnaphthalenes or mixture of aromatic hydrocarbons like Solvesso 200), ketones (such as cyclohexanone or methylcyclohexanone), lactones (such as ‘gamma’-butyrolactone) and alcohols (such as butanol, benzyl alcohol, furfuryl alcohol), N-alkylpyrrolidones (such as N-methylpyrrolidone or N-octylpyrrolidone) and dimethyl amides of fatty acids (such as C8-C10 fatty acid dimethylamide).

Suitable emulsifiers are nonionic or anionic or a combination of these emulsifiers. It is preferred to use more than two kinds of emulsifiers which have different HLB value. The total content of emulsifiers is generally 2 to 15% by weight of the composition.

Suitable nonionic emulsifiers, not being limited to, are, for example, sugar esters (such as sorbitan monolaurate, polyoxyethylene sorbitan monolaurrate), polyoxyethylene alkyl ethers (such as polyoxyethylene lauryl ether or polyoxyethylene coconut fatty alcohol ether), polyoxyethylene aryl ethers (such as polyoxyethylene nonylphenyl ether or polyoxyethylene trystyrylphenyl ether), polyoxyethylene vegetable oil ethers (such as polyoxyethylene castor oil), polyoxyethylene fatty acid esters (such as polyoxyethylene monolaurate), polyoxyethylene polyoxypropylene block co-polymers and polyoxyethylene alkyl amines (such as polyoxyethylene stearyl fatty amine).

Suitable anionic emulsifiers, not being limited to, are, for example, sodium or potassium salt of fatty acids (such as sodium laurate), sodium, potassium or calcium salt of alkylbenzenesulfonates (such as sodium dodecylbenzenesulfonate), polyoxyethylene alkyl ether phosphates (such as polyoxyethylene tridecyl ether phosphate) and polyoxyethylene aryl ether phosphates (such as polyoxyethylene tristyryl phenyl ether phosphate).

Suitable stabilizer, not being limited to, is, for example, epoxidized vegetable oil (such as epoxidized soybean oil).

Suitable colorant, not being limited to, is, for example, oil soluble dye (such as azo dye and antraquinone dye).

Another aspect of the present invention relates to a method for preparing the emulsifiable concentrate (EC) formulation of the composition. In one embodiment, the emulsifiable concentrate formulation can be prepared by mixing the neonicotinoid compound, the organophosphate compound, organic solvent, emulsifier and other formulation additives. Usually the neonicotinoid compound, the organophosphate compound and emulsifiers are put into solvent under stirring, if necessary with heating.

In another embodiment of the present invention, the composition of the wettable powder (WP) formulation is provided. The typical composition of the wettable powder formulation of the present invention comprises the neonicotinoid compound, the organophosphate compound, wetter, dispersant and carrier. Other formulation additives such as oil absorbent, stabilizer and colorant may be additionally used.

Suitable wetters, not being limited to, are, for example, alkyl sulfates (such as sodium lauryl sulfate), polyoxyethylene alkyl ether sulfates (such as sodium polyoxyethylene lauryl ether sulfate), polyoxyethylene aryl ether sulfates (such as sodium polyoxyethylene nonylphenyl ether sulfate or ammonium polyoxyethylene tristyrylphenyl ether sulfate), alkane sulfonates (such as sodium dodecyl sulfonate), ‘alpha’-olefin sulfonate, aryl sulfonates (such as sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium ‘beta’-naphthalene sulfonate formaldehyde condensate or sodium alkyl diphenyl ether sulfonate), alkylsulfosuccinates (such as sodium dioctylsulfosuccinate), lignosulfonates and polyoxyetrhylene aryl ether phosphates (such as polyoxyethylene phenyl ether phosphate).

Suitable dispersants, not being limited to, are, for example, alkyl sulfates (such as sodium lauryl sulfate), polyoxyethylene alkyl ether sulfates (such as sodium polyoxyethylene lauryl ether sulfate), polyoxyethylene aryl ether sulfates (such as sodium polyoxyethylene nonylphenyl ether sulfate or ammonium polyoxyethylene tristyrylphenyl ether sulfate), alkane sulfonates (such as sodium dodecyl sulfonate), ‘alpha’-olefin sulfonates, aryl sulfonates (such as sodium dodecylbenzene silfonate, sodium alkylnaphthalene sulfonate, sodium ‘beta’-naphthalene sulfonate formaldehyde condensate or sodium alkyl diphenyl ether sisulfonate), lignosulfonates, polyoxyethylene aryl ether phosphates (such as polyoxyethylene phenyl ether phosphate) and carboxymethyl celluloses (such as sodium carboxymethyl cellulose).

Suitable carriers, not being limited to, are, for example, talc, kaolinite, pyrophyllite, montmorillonite, attapulgite, bentonite, calcite, diatomaceous earth, synthetic minerals (such as precipitated silica, fumed silica and calcium carbonate).

Suitable oil absorbents, not being limited to, are, for example, precipitated silica, fumed silica and diatomaceous earth.

Suitable stabilizer, not being limited to, is, for example, epoxidized vegetable oil (such as epoxidized soybean oil).

Suitable colorants, not being limited to, are, for example, organic dyestuffs (such as azo dye, phthalocyanine dye or alizarin dye) and inorganic pigments (such as iron oxide).

In another aspect of the present invention, a method for preparing the wettable powder (WP) formulation of the composition is provided. In one embodiment, the wettable powder can be prepared by mixing the neonicotinoid compound, the organophosphate compound, wetter, dispersant and carrier. If the organophosphate compound is liquid, it is preferable to use oil absorbent. Usually the neonicotinoid compound, the organophosphate compound, wetter, dispersant, carrier and other formulation additives are mixed uniformly in a mixer and milled by a mill such as an air jet mill to median diameter 5 to 20 micrometer.

In yet another embodiment of the present invention, the composition of water dispersible granule (WG) formulation is provided. The typical composition of the water dispersible granule formulation comprises the neonicotinoid compound, the organophosphate compound, wetter, dispersant, binder, disintegrant and carrier. Other formulation additives such as oil absorbent, stabilizer and colorant may be additionally used.

Suitable wetters, not being limited to, are, for example, alkyl sulfates (such as sodium lauryl sulfate), polyoxyethylene alkyl ether sulfates (such as sodium polyoxyethylene lauryl ether sulfate), polyoxyethylene aryl ether sulfates (such as sodium polyoxyethylene nonylphenyl ether sulfate or ammonium polyoxyethylene tristyrylphenyl ether sulfate), alkane sulfonates (such as sodium dodecyl sulfonate), ‘alpha’-olefin sulfonates, aryl sulfonates (such as sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium ‘beta’-naphthalene sulfonate formaldehyde condensate or sodium alkyl diphenyl ether sulfonate), alkylsulfosuccinates (such as sodium dioctylsulfosuccinate), lignosulfonates and polyoxyethylene aryl ether phosphates (such as polyoxyethylene phenyl ether phosphate).

Suitable dispersants, not being limited to, are, for example, alkyl sulfates (such as sodium lauryl sulfate), polyoxyethylene alkyl ether sulfates (such as sodium polyoxyethylene lauryl ether sulfate), polyoxyethylene aryl ether sulfates (such as sodium polyoxyethylene nonylphenyl ether sulfate or ammonium polyoxyethylene tristyrylphenyl ether sulfate), alkane sulfonates (such as sodium dodecyl sulfonate), ‘alpha’-olefin sulfonates, aryl sulfonates (such as sodium dodecylbenzene sulfonate, sodium alkylnaphthalene sulfonate, sodium ‘beta’-naphthalene sulfonate formaldehyde condensate or sodium alkyl diphenyl ether susulfonate), lignosulfonates, polyoxyethylene aryl ether phosphates (such as polyoxyethylene phenyl ether phosphate) and carboxymethyl celluloses (such as sodium carboxymethyl cellulose).

Suitable binders, not being limited to, are, for example, polyvinyl alcohol, dextrin, denatured dextrin, soluble starch, carboxymethyl cellulose and bentonite.

Suitable disintegrants, not being limited to, are, for example, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and bentonite.

Suitable carriers, not being limited to, are, for example, talc, kaolinite, pyrophyllite, montmorillonite, attapulgite, bentonite, calcite, diatomaceous earth, synthetic minerals (such as precipitated silica, fumed silica and calcium carbonate).

Suitable oil absorbents, not being limited to, are, for example, precipitated silica, fumed silica and diatomaceous earth.

Suitable stabilizer, not being limited to, is, for example, epoxidized vegetable oil (such as epoxidized soybean oil).

Suitable colorants, not being limited to, are, for example, organic dyestuffs (such as azo dye, phthalocyanine dye or alizarin dye) and inorganic pigments (such as iron oxide).

In another aspect of the present invention, another method for preparing the water dispersible granule (WG) formulation of the composition is provided. In one embodiment, the water dispersible granule formulation can be prepared by mixing the neonicotinoid compound, the organophosphate compound, wetter, dispersant, binder, disintegrant and carrier. If the organophosphate compound is liquid, it is preferable to use oil absorbent (such as precipitated silica, fumed silica or diatomaceous earth). Usually the neonicotinoid compound, the organophosphate compound, wetter, dispersant, binder, disintegrant, carrier and other formulation additives are mixed uniformly in a mixer and milled by a mill such as an air jet mill to median diameter 5 to 20 micrometer. The milled mixture is kneaded by adding 2 to 10 % of water, extruded and dried. Other granulation method such as splay dry may be used. In this case, the milled mixture is well mixed with enough amount of water to get slurry.

It has been found that the synergistic agrochemical composition of the present invention shows synergistic effect against wide variety of sucking pests of cotton such, as not being limited to, Jassids (Amrasca biguttula biguttula), Aphids (Aphis gossypii), Thrips (Thrips tabaci) and Whitefly (Bemesia tabaci).

It has been further found that the agrochemical composition of the present invention shows synergistic effect on population of various sucking pests of cotton found in different regions such as, not being limited to, Maharashtra and Karnataka.

In this respect, the synergistic agrochemical composition of the present invention shows synergistic effect when compared with the effect of pesticides known in the prior art such as, not being limited to, dinotefuran, acephate, imidacloprid, monocrotophos and acetamiprid for management of sucking pests of cotton.

In order to more clearly describe the nature of the present invention, examples will hereinafter be described. It should be understood, however, that this is done solely by way of example, and is not intended to limit the scope of present invention.

Example: Soluble powder

To fifty three parts by weight of acephate technical, 4.2 parts by weight of dinotefuran technical, 4.0 parts by weight of Genapol PF-80 (POE-POP block copolymer produced by Clariant International Ltd.), 2.0 parts of K-SIL-20 (precipitated silica produced by Kinetic Chemicals) and 36.8 parts by weight of ammonium sulfate are mixed, pulverized in an air jet mill and mixed again uniformly in a high speed mixer.

Example: Soluble granules

To Fifty three parts by weight of acephate technical, 4.2 parts by weight of dinotefuran technical, 4.0 parts by weight of Genapol PF-80 (POE-POP block copolymer produced by Clariant International Ltd.), 3.0 parts by weight of PG-100 (modified soluble starch produced by Indian Chemicals Corporation) and 35.8 parts by weight of ammonium sulfate are mixed and pulverized in a high speed mixer. The resulting mixture is kneaded with water, extruded through a screen (0.8 mm diameter opening) and dried.

Following test results illustrate the present invention and not intended to limit the present invention.

Table 1:

Location: Maharashtra
Village: Palashi
District: Aurangabad
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Jassids/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 8.4 0.2 0.0 0.1 0.1
2 Dinotefuran 20 % SG 25 125 7.2 0.3 0.1 0.5 0.7
3 Acephate 75% SP 300 400 8.2 1.8 3.6 4.1 4.4
4 Imidacloprid 17.8 % SL 22.25 125 7.9 1.6 1.6 1.1 2.1
5 Monocrotophos 36% SL 175 437 6.9 2.0 1.7 1.0 1.5
6 Acetamiprid 20% SP 10 50 8.5 3.6 1.9 4.8 5.9
7 Control - - 7.9 7.4 9.2 7.7 6.8
SEm(±) 0.043 0.087 0.235 0.043 0.065
CD(p=0.05) 0.134 0.269 0.725 0.134 0.201

Table 2:
Location: Maharashtra
Village: Palashi
District: Aurangabad
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Aphids/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 8.26 1.85 1.88 2.36 3.05
2 Dinotefuran 20 % SG 25 125 8.05 2.05 2.44 3.05 3.24
3 Acephate 75% SP 300 400 8.18 3.68 3.50 3.85 7.75
4 Imidacloprid 17.8 % SL 22.25 125 9.71 3.94 4.51 4.99 6.02
5 Monocrotophos 36% SL 175 437 12.25 2.87 2.75 3.04 3.56
6 Acetamiprid 20% SP 10 50 9.62 1.90 1.95 2.04 3.17
7 Control - - 9.26 9.58 10.22 11.84 10.34
SEm(±) 0.022 0.214 0.281 0.436 0.454
CD(p=0.05) 0.067 0.660 0.868 1.345 1.400

Table 3:
Location: Maharashtra
Village: Palashi
District: Aurangabad
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Thrips/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 10.17 0.07 0.03 0.03 0.13
2 Dinotefuran 20 % SG 25 125 7.97 5.13 4.17 3.93 7.23
3 Acephate 75% SP 300 400 11.33 3.01 5.13 3.17 7.60
4 Imidacloprid 17.8 % SL 22.25 125 8.60 1.20 4.73 8.17 9.97
5 Monocrotophos 36% SL 175 437 9.30 10.80 11.57 12.83 11.13
6 Acetamiprid 20% SP 10 50 10.61 10.44 12.70 15.3 17.8
7 Control - - 9.50 12.88 14.6 18.32 20.5
SEm(±) 0.282 0.454 0.434 0.449 0.845
CD(p=0.05) 0.868 1.400 1.338 1.385 2.604

Table 4:
Location: Maharashtra
Village: Palashi
District: Aurangabad
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Whitefly/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 5.36 1.24 1.30 1.45 1.88
2 Dinotefuran 20 % SG 25 125 3.88 2.08 3.22 3.38 4.75
3 Acephate 75% SP 300 400 4.28 3.41 3.68 4.25 5.78
4 Imidacloprid 17.8 % SL 22.25 125 5.16 3.28 5.42 6.04 6.22
5 Monocrotophos 36% SL 150 375 4.06 4.27 4.68 5.26 5.16
6 Acetamiprid 20% SP 20 100 4.84 1.72 1.58 2.02 2.24
7 Control - - 3.98 5.7 8.99 10.3 15.2
SEm(±) 0.295 0.281 0.446 0.431 0.518
CD(p=0.05) 0.910 0.868 1.374 1.329 1.596

Table 5:
Location: Karnataka
Village: Benakanakonda
District: Haveri
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Jassids/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 4.1 0.84 0.56 1.08 2.45
2 Dinotefuran 20 % SG 25 125 3.74 1.02 1.34 2.42 2.85
3 Acephate 75% SP 300 400 3.64 2.04 2.34 3.18 3.86
4 Imidacloprid 17.8 % SL 22.25 125 3.26 0.95 0.26 1.90 2.74
5 Monocrotophos 36% SL 175 437 4.09 2.67 1.8 2.10 3.88
6 Acetamiprid 20% SP 10 50 3.84 1.27 1.85 2.42 3.04
7 Control - - 2.88 4.05 4.42 7.14 10.25
SEm(±) 0.028 0.011 0.025 0.045 0.031
CD(p=0.05) 0.087 0.034 0.076 0.137 0.095

Table 6:
Location: Karnataka
Village: Benakanakonda
District: Haveri
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Aphids/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 13.8 1.1 0.8 0.8 1.01
2 Dinotefuran 20 % SG 25 125 14.4 20.9 24.8 27.5 29.82
3 Acephate 75% SP 300 400 18.2 19.6 23.1 25.5 28.9
4 Imidacloprid 17.8 % SL 22.25 125 19.55 15.68 20.15 22.3 27.1
5 Monocrotophos 36% SL 175 437 15.68 16.5 19.30 21.8 24.5
6 Acetamiprid 20% SP 10 50 16.0 1.06 1.00 0.3 1.04
7 Control - - 17.3 23.01 25.81 29.5 29.11
SEm(±) 0.094 0.097 1.175 1.098 0.909
CD(p=0.05) 0.288 0.299 3.621 3.385 2.799

Table 7:
Location: Karnataka
Village: Benakanakonda
District: Haveri
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. of Thrips/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 15.0 2.03 1.98 3.18 3.9
2 Dinotefuran 20 % SG 25 125 14.1 10.1 8.4 9.0 12.8
3 Acephate 75% SP 300 400 18.5 14.8 10.1 9.9 11.0
4 Imidacloprid 17.8 % SL 22.25 125 16.9 11.6 8.9 10.0 13.9
5 Monocrotophos 36% SL 175 437 13.9 10.8 12.7 12.5 19.0
6 Acetamiprid 20% SP 10 50 16.7 13.4 10.3 10.2 12.8
7 Control - - 16.0 19.24 24.56 29.4 31.5
SEm(±) 0.431 1.000 0.873 0.228 0.398
CD(p=0.05) 1.327 3.082 2.689 0.702 1.228

Table 8:
Location: Karnataka
Village: Benakanakonda
District: Haveri
Water volume: 500 lit/ha

Tr. No Treatments Dose g.a.i/ha Formulation/ha Mean No. Whitefly/leaf
BS 1 DAS 3 DAS 7 DAS 10DAS
1 Dinotefuran Acephate 54% SG 22+275 550 6.9 1.1 0.8 0.9 1.4
2 Dinotefuran 20 % SG 25 125 7.1 3.5 2.9 4.57 7.5
3 Acephate 75% SP 300 400 6.7 3.8 2.8 4.06 5.1
4 Imidacloprid 17.8 % SL 22.25 125 5.4 4.3 3.7 4.00 7.3
5 Monocrotophos 36% SL 150 375 5.5 5.4 5.0 8.4 10.3
6 Acetamiprid 20% SP 20 100 5.6 2.1 1.5 2.08 4.1
7 Control - - 6.9 7.49 9.3 10.4 16.2
SEm(±) 0.033 0.108 0.070 0.150 0.477
CD(p=0.05) 0.103 0.332 0.216 0.464 1.469

From the experimental data shown above, the synergistic effect of the agrochemical composition in the management of sucking pests of cotton can be shown. It can be seen that the mean number of pests per leaf is significantly less as compared to the independent use of other pesticides such as dinotefuran, acephate, imidacloprid, monocrotophos and acetamiprid.

In all the examples described above, following specific terminologies are used:

The abbreviation Dinotefuran Acephate 54% SG refers to Insecticide mixture of dinotefuran 4% and acephate 50% soluble granules;
The abbreviation SG refers to Soluble Granule,
The abbreviation SP refers to a Soluble Powder, which dissolves readily in water and forms a true solution.
The abbreviation SL refers to Soluble (liquid) Concentrate
The abbreviation BS refers to Before Spraying
The abbreviation DAS refers to Days after spraying

From the foregoing description, it will be apparent to one ordinarily skilled in the art that many changes and modifications can be made thereto without departing from the spirit or scope of the invention as set forth herein. Accordingly, it is not intended that the scope of the foregoing description be limited to the description set forth above, but rather that such description be construed as encompassing all of the features that reside in the present invention, including all the features and embodiments that would be treated as equivalents thereof by those skilled in the relevant art.

WE CLAIM:

1. A stable synergistic agrochemical composition for management of sucking pests of cotton comprising neonicotinoid compound, organophosphate compound and agriculturally acceptable additives wherein the weight percentage of neonicotinoid compound is 0.1 to 20%, the weight percentage of organophosphate compound is 5 to 60% and the weight percentage of agriculturally acceptable additives is 20 to 94.9%.

2. The stable synergistic agrochemical composition as claimed in claim 1, wherein the neonicotinoid compound is selected from acetamiprid, clothianidin, dinotefuran, imidacloprid, nitenpyram, thiacloprid and thiamethoxam.

3. The stable synergistic agrochemical composition as claimed in any of the preceding claims, wherein the neonicotinoid compound is dinotefuran.

4. The stable synergistic agrochemical composition as claimed in any of the preceding claims, wherein the organophosphate compound is selected from acephate, Chlorpyrifos, Demeton-S-methyl, Dichlorvos, Dimethoate, Ethion, Fenitrothion, Fenthion, Malathion, Monocrotophos, Oxydemeton-methyl , Parathion, Parathion-methyl, Phenthoate, Phorate, Profenofos, Quinalphos , Triazophos.

5. The stable synergistic agrochemical composition as claimed in any of the preceding claims, wherein the organophosphate compound is acephate.

6. The stable synergistic agrochemical composition as claimed in claim 1, wherein agriculturally acceptable additives are selected from carrier, solvent, emulsifier, dispersant, wetting agent, binder, stabilizer, pH adjuster, and/or coloring agent.

7. The stable synergistic agrochemical composition as claimed in claim 1, wherein said composition exists in five types of formulations such as water soluble powder (SP), water soluble granule (SG), emulsifiable concentrate (EC), wettable powder (WP), water dispersible granules (WG).

8. A stable synergistic agrochemical composition for management of sucking pests of cotton comprising neonicotinoid compound, organophosphate compound and agriculturally acceptable additives wherein the weight percentage of neonicotinoid compound is 1 to 8%, the weight percentage of organophosphate compound is 40 to 60% and the weight percentage of agriculturally acceptable additives is 32 to 59%.

9. A method of preparation of the water soluble powder (SP) formulation of the stable synergistic agrochemical composition as claimed in claim 1 comprising the steps of:
(a) mixing three parts by weight of acephate technical, 4.2 parts by weight of dinotefuran technical, 4.0 parts by weight of Genapol PF-80 (POE-POP block copolymer produced by Clariant International Ltd.), 2.0 parts of K-SIL-20 (precipitated silica produced by Kinetic Chemicals) and 36.8 parts by weight of ammonium sulfate;
(b) pulverizing the mixture in an air jet mill;
(c) mixing again uniformly in a high speed mixer.

10. A method of preparation of the water soluble granule (SG) formulation of the stable synergistic agrochemical composition as claimed in claim 1 comprising the steps of:
(a) mixing fifty three parts by weight of acephate technical, 4.2 parts by weight of dinotefuran technical, 4.0 parts by weight of Genapol PF-80 (POE-POP block copolymer produced by Clariant International Ltd.), 3.0 parts by weight of PG-100 (modified soluble starch produced by Indian Chemicals Corporation) and 35.8 parts by weight of ammonium sulfate and pulverizing in a high speed mixer;
(b) kneading the resulting mixture with water;
(c) extruding through a screen of 0.8 mm diameter opening; and
(d) drying.

11. A method of pre-mix application of the stable synergistic agrochemical composition as claimed in claim 1 for management of sucking pests of cotton.

Dated this 6th day of November, 2014.