TITLE: WATER SOLUBLE GRANULAR INSECTICIDAL COMPOSITION
FIELD OF THE INVENTION
[0001] The present invention relates to water soluble granular insecticidal composition
comprising an effective amount of Cartap hydrochloride for use in control and prevention of
crop pests, and methods of preparation thereof.
BACKGROUND OF THE INVENTION
[0002] In recent years, with the development of agricultural industrialization, commercial
agriculture chemical pesticides consisting of insecticides, herbicides and fungicides are
playing an increasingly important role for enhancement of food production from the
diminishing arable area to feed the burgeoning population in India. Pest outbreaks can cause
serious losses in crops and vegetable production and affect the income of the farmers. Pest
outbreaks are known to threaten food security.
[0003] Rice is an important staple food crop in India cultivated in an area of approx. 44.0
million hectare. The crop is extensively cultivated in West Bengal, Andhra Pradesh, Uttar
Pradesh, Orissa, Tamil Nadu, Chattisgarh, Bihar, Karnataka and Haryana states.
[0004] Rice crop is infested by a number of insect pests, of which Stem borer and Leaf folder
are the serious insect pests, devastating the crop throughout the world. The stem borer larvae,
mainly Scirpophagaincertulas, S. innotata, Chilopolychrysus and Sesamiainferens bore the
stem at vegetative stage resulting to “Dead hearts” formation and attack at the ear head
emergence culminates to “White ear heads”.This insect causes severe yield losses in many
countries including India. Leaf folders mainly Cnaphalocrocismedinalis is also an important
insect pest, occurring in rice causing serious yield losses. The larvae of the leaf folder, fold
the leaves and take out chlorophyll, making the leaves unfit for photosynthesis, culminating
to the sever yield losses.
[0005] Similarly, diamond back moth, popularly known as DBM or Plutellaxylostella, is an
endemic pest of cole crops (Cabbage and Cauliflower) occurring across the world. The larvae
denude the plant of cole crops making completely unfit for human consumption.
[0006] Cartap hydrochloride is used to control sucking and chewing insects (particularly
Lepidoptera and Coleoptera), at almost all stages of development, on many crops including
rice, potatoes, cabbage and other vegetables. Cartap is a systemic insecticide with stomach
and contact action. It causes paralysis by a ganglionic blocking action on the central nervous
system. Currently, Sand Coated Granular and Soluble Powder (SP) formulations of Cartap
-3-
hydrochloride (2-dimethylaminopropane-1, 3-diol) are used against the rice leaf folder and
stem borer. Cartap hydrochloride remained an excellent agent for treatment of these insect
pests but at the same time in SP formulation some inherent disadvantages like poor solubility,
powder inhalation problem, sedimentation, chocking of spray nozzle , high dose etc remain.
[0007] Thus there is a need to provide an improved insecticidal formulation of Cartap
hydrochloride which must be highly toxic to insects but at the same time must be
comparatively safer to humans and other warm-blooded animals. This new formulation must
be effective at low dosage thus reducing the impact on the environment. This new
formulation should also reduce costs, significantly improve efficiency and improve the
control effect.
[0008] The present invention satisfies these needs, as well as others, and efficiently
overcomes the deficiencies found in the background art.
OBJECTS OF THE INVENTION
[0009] It is an object of the present invention to provide a water-soluble granular insecticidal
composition comprising an effective amount of Cartap hydrochloride to control and prevent
crop pests.
[0010] It is an object of the present invention to provide a water-soluble granular insecticidal
composition comprising an effective amount of Cartap hydrochloride to control and prevent
insect pests on rice and cole crops.
[0011] It is another object of the invention to provide a water-soluble granular insecticidal
composition comprising an effective amount of Cartap hydrochloride to particularly control
and prevent stem borer and leaf borer in rice and diamond back moth in cole crops.
[0012] It is another object of the invention to provide a water-soluble granular insecticidal
composition comprising an effective amount of Cartap hydrochloride which is highly toxic to
insects but of very low toxicity to humans and other warm-blooded animals.
[0013] It is another object of the present invention to provide a water soluble granular
composition which has better efficacy as compared to existing soluble powder formulation.
[0014] It is another object of the present invention to provide a water soluble insecticidal
granular composition which reduces the impact on environment and does not adversely affect
the soil composition as compared to coated sand granules.
[0015] It is still another object of the present invention to provide a water-soluble granular
insecticidal composition comprising an effective amount of Cartap hydrochloride, which is
effective at low dosage thus reducing the impact on the environment.
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[0016] Other objects of the present invention will be apparent from the description of the
invention herein below.
SUMMARY OF THE INVENTION
[0017] The present invention relates to awater-soluble granular insecticidal composition
comprising an effective amount of: (a) Cartap hydrochloride; (b) at least one stabilizing
agent; (c) at least one emulsifying agent; (d) at least one binding agent; (e) at least one
defoaming agent and (f) at least one diluent.
[0018] In one embodiment of the present invention, the effective amount of Cartap
hydrochloride ranges from 70 to 80 % w/w.
[0019] Further, the present invention relates to a method of preparation of water-soluble
granular insecticidal composition, comprising the steps of:
(i) mixing Cartap hydrochloride, at least one binding agent and at least one diluent in a vessel
to form a homogenous mixture;
(ii) adding at least one defoaming agent, at least one emulsifying agent and at least one
stabilizing agent to the homogenous mixture;
(iii) adding requisite quantity of water to make a dough wherein the dough is passed through
vertical extruder to produce homogenous extrudes of desired dimensions;
(iv) drying the extrudes/granules in a dryer to reduce moisture content to a specified limit to
form dried granules; and
(v) sieving the dried granules to remove dust and maintain sieve size as per the desired
dimensions of the extrudes.
[0020] In an embodiment of the present invention ,the at least one stabilizing agent is
selected from the group comprising compounds having epoxy groups, antioxidants (e.g.,
dibutylhydroxytoluene (BHT), butylhydroxyanisole (BHA), tetrakis[3-(3,5-di-tert-butyl-4-
hydroxyphenyl)propionyloxymethyl]methane (Irganox 1010), DL-tocopherol, propyl gallate,
erysorbic acid, sodium erysorbate, isopropyl citrate, etc.), phosphoric acid, PAP auxiliary
agent (isopropyl acid phosphate), cyclodextrin (Toyoderin P), or tall oil fatty acids (Hartall
fatty acids).
[0021] In one exemplary embodiment of the present invention, the stabilizing agent is
isopropyl acid phosphate.
[0022] In an embodiment of the present invention, the at least one emulsifying agent is
selected from the group comprisingethoxylated and ethopropoxylated alcohols and nonyl
phenols, ethoxylatedtristeryl phenol, ethoxylatedtristeryl phenol phosphates, ethoxylated and
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ethopropoxylated castor oil, polyoxyethylene and polyoxyethylenenonylphenol ethers,
polyvinyl pyrriolidone, calcium alkyl benzene sulfonates, alkyl benzene calcium sulfate, and
phenyl ethyl phenyl polyethylene glycol-polyoxypropylene and proprietary blended
emulsifiers or mixtures thereof.
[0023] In one exemplary embodiment of the present invention, the emulsifying agent is
polyoxyethylenenonylphenyl ether.
[0024] In an embodiment of the present invention, the at least one binding agent is selected
from the group comprisinghydroxymethyl cellulose, carboxy methyl cellulose, soluble starch,
polysaccharides, sucrose, starch syrup, dextrose, methylcellulose, carboxymethyl cellulose,
starch, polyethylene glycols, polyvinylpyrrolidones, partially hydroxylated polyvinyl acetate
and polymeric adhesives or mixtures thereof.
In one exemplary embodiment of the present invention, the binding agents are selected from
the group comprising hydroxymethyl cellulose, carboxy methyl cellulose and soluble starch.
In an embodiment of the present invention, the at least one defoaming agent is selected from
the group comprising methylated silicones, polyorganosiloxane, and 2-ethylhexanol.
[0025] In one exemplary embodiment of the present invention, thedefoaming
agentispolydimethylsiloxane.
[0026] In an embodiment of the present invention, the at least one diluent is selected from the
group comprising 4-0-B-D galactopyranosyl alpha-D-glycopyranose and ammonium
sulphate.
[0027] In an embodiment of the present invention, the water soluble granular insecticidal
composition is used to control and prevent crop pests. In one examplary embodiment, the
water soluble granular insecticidal composition is used to control and prevent pests on rice
and cabbage. In another examplary embodiment of the present invention, the water soluble
granular insecticidal composition is used to control and prevent rice pests such as stem borer
and leaf folder. In a further exemplary embodiment of the present invention, the water soluble
granular insecticidal composition is used to control and prevent and cabbage pests such as
diamond back moth.
[0028] Further aspects of the invention will be apparent from the following description.
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DETAILED DESCRIPTION OF THE INVENTION
[0029] In describing the embodiments of the invention, specific terminology is resorted for
the sake of clarity. However, it is not intended that the invention be limited to the specific
terms so selected and it is to be understood that each specific term includes all technical
equivalents that operate in a similar manner to accomplish a similar purpose.
[0030] The present invention relates to a water-soluble granular insecticidal composition
comprising an effective amount of: (a) Cartap hydrochloride; (b) at least one stabilizing
agent; (c) at least one emulsifying agent; (d) at least one binding agent; (e) at least one
defoaming agent and (f) at least one diluent.
[0031] In one embodiment of the present invention, the effective amount of Cartap
hydrochloride ranges from 70 to 80 % w/w.
[0032] Further, the present invention relates to a method of preparation of water-soluble
granular insecticidal composition, comprising the steps of:
(i) mixing Cartap hydrochloride, at least one binding agent and at least one diluent in a vessel
to form a homogenous mixture;
(ii) adding at least one defoaming agent, at least one emulsifying agent and at least one
stabilizing agent to the homogenous mixture;
(iii) adding requisite quantity of water to make a dough wherein the dough is passed through
vertical extruder to produce homogenous extrudes of desired dimensions;
(iv) drying the extrudes/granules in a dryer to reduce moisture content to a specified limit to
form dried granules; and
(v) sieving the dried granules to remove dust and maintain sieve size as per the desired
dimensions of the extrudes.
[0033] In an embodiment of the present invention , the at least one stabilizing agent is
selected from the group comprising compounds having epoxy groups, antioxidants (e.g.,
dibutylhydroxytoluene (BHT), butylhydroxyanisole (BHA), tetrakis[3-(3,5-di-tert-butyl-4-
hydroxyphenyl)propionyloxymethyl]methane (Irganox 1010), DL-tocopherol, propyl gallate,
erysorbic acid, sodium erysorbate, isopropyl citrate, etc.), phosphoric acid, PAP auxiliary
agent (isopropyl acid phosphate), cyclodextrin (Toyoderin P), or tall oil fatty acids (Hartall
fatty acids).
[0034] In one exemplary embodiment of the present invention, the stabilizing agent is
isopropyl acid phosphate.
[0035] In an embodiment of the present invention, the at least one emulsifying agent is
selected from the group comprising ethoxylated and ethopropoxylated alcohols and nonyl
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phenols, ethoxylatedtristeryl phenol, ethoxylatedtristeryl phenol phosphates, ethoxylated and
ethopropoxylated castor oil, polyoxyethylene and polyoxyethylenenonylphenol ethers,
polyvinyl pyrriolidone, calcium alkyl benzene sulfonates, alkyl benzene calcium sulfate, and
phenyl ethyl phenyl polyethylene glycol-polyoxypropylene and proprietary blended
emulsifiers or mixtures thereof.
[0036] In one exemplary embodiment of the present invention, the emulsifying agent is
polyoxyethylenenonylphenyl ether.
[0037] In an embodiment of the present invention, the at least one binding agent is selected
from the group comprisinghydroxymethyl cellulose, carboxy methyl cellulose, soluble starch,
polysaccharides, sucrose, starch syrup, dextrose, methylcellulose, carboxymethyl cellulose,
starch, polyethylene glycols, polyvinylpyrrolidones, partially hydroxylated polyvinyl acetate
and polymeric adhesives or mixtures thereof.
[0038] In one exemplary embodiment of the present invention, the binding agents are
selected from the group comprising hydroxymethyl cellulose, carboxy methyl cellulose and
soluble starch.
[0039] In an embodiment of the present invention, at least one defoaming agent is selected
from the group comprising methylated silicones, polyorganosiloxane, and 2-ethylhexanol.
[0040] In another exemplary embodiment of the present invention, thedefoaming agentis
polydimethylsiloxane.
[0041] In an embodiment of the present invention, the at least one diluent is selected from the
group of 4-0-B-D galactopyranosyl alpha-D-glycopyranose and ammonium sulphate.
[0042] In an embodiment of the present invention, the water soluble granular insecticidal
composition is used to control and prevent crop pests. In one exemplary embodiment, the
water soluble granular insecticidal composition is used to control and prevent pests on rice
and cabbage.
[0043] In one exemplary embodiment of the present invention, the insecticidal composition is
used to control and prevent rice pests such as stem borer (Scirpophagaincertulas, S. innotata,
ChilopolychrysusandSesamiainferens) and leaf folder (Cnaphalocrocismedinalis). In another
exemplary embodiment of the present invention, the insecticidal composition is used to
control and prevent cabbage pests such as diamond back moth (Plutellaxylostella).
[0044] The soluble granules of the composition of the present invention dissolve completely
in water, enable faster and easier sprayer cleanout, and deliver more consistent pestcontrol.
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[0045] The present invention is illustrated with working examples, which is intended to
illustrate the working of the invention and not intended to take restrictively to imply any
limitations on the scope of the present invention.
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EXAMPLES
EXAMPLE 1
[0046] Table1a and 1b illustrates the exemplary compositions of Cartap hydrochloride
soluble granules (SG).
Table 1a: Exemplary composition of Cartap hydrochloride soluble granules
S. No. Common Name Content(% w/w)
1 Cartaphydrochloride a.i. (min. 98% w/w) 76.55
2 Isopropyl acid phosphate 3.00
3 PolyoxyethyleneNonylphenyl Ether 1.50
4 Hydroxymethyl cellulose 3.50
5 Carboxy methyl cellulose 3.00
6 Soluble starch 3.55
7 PolydimethylSiloxane 0.10
8 (4-0-B-D galactopyranosyl Alpha-D-glycopyranose 4.15
9 Ammonium sulphate 4.65
Total 100.00
Table 1b: Exemplary composition of Cartap hydrochloride soluble granules
S.No
.
Common name Content (%
w/w)
1 Cartap hydrochloride a.i. 75.00
2 Isopropyl acid phosphate 3.00
3 PolyoxyethyleneNonylphenyl ether 1.50
4 PolydimethylSiloxane 0.10
5 Soluble starch 10.70
6 Diluent (4-0-B-D galactopyranosyl Alpha-D-glycopyranose) QS to make
TOTAL 100.00
Table 1c: Exemplary composition of Cartap hydrochloride soluble granules
S. No. Common Name Content(% w/w)
1 Cartap hydrochloride a.i. (min. 98% w/w) 76.55
2 Isopropyl acid phosphate 3.50
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3 PolyoxyethyleneNonylphenyl Ether 2.50
4 Hydroxymethyl cellulose 1.50
5 Carboxy methyl cellulose 1.15
6 Soluble starch 0.10
7 PolydimethylSiloxane 0.20
8 (4-0-B-D galactopyranosyl Alpha-D-glycopyranose 7.50
9 Ammonium sulphate 7.00
Total 100.00
EXAMPLE 2: BIO-EFFICACY OF THE WATER SOLUBLE CARTAP
HYDROCHLORIDE INSECTICIDAL COMPOSITION
[0047] To evaluate the efficacy of this soluble granule formulation, trials were undertaken in
Haryana, Andhra Pradesh, Tamil Nadu and West Bengal states against stem borer and leaf
folder of Rice.The results presented in Tables 2 to 9 clearly reveal at par or better efficacy of
Cartaphydrochloride SG formulation @ 375 g a.i./ha with that of the existing Cartap
hydrochloride 50% soluble power (SP) @ 500 g a.i./ha.SG formulation of Cartap
hydrochloride will provide much lesser load of 125 g a.i./ha to environment and thus this
formulation can be considered as safer formulation in comparison to the existing Cartap
hydrochloride 50% SP.
Table 2: Bio-efficacy of Cartap hydrochloride SG formulation (also referred to as
“CartapHClSG” hereinafter) against stem borer infesting rice in Haryana
Treatments
Dose ( g/ha)
Deat Heart (%)
White ears
(%Before )
Treatment
Ist spray 2nd Spray
a.i. 7 days 15 days 7 days 15 days
CartapHClSG
281.5
5.40
(13.42)
4.25
(11.80)
4.56
(12.32)
3.31
(10.47)
3.56
(10.87)
5.26
(13.25)
CartapHClSG
318.8
5.00
(12.74)
3.14
(10.20)
3.37
(10.57)
2.20 (8.51) 2.39 (8.88)
4.32
(11.99)
CartapHClSG
375.0
4.00
(11.48)
2.26
(8.64)
2.41
(8.93)
1.26
(6.41)
1.33
(6.62)
2.10
(8.32)
CartapHClSG
500.0
4.20
(11.78)
1.65
(7.02)
1.83
(7.24)
0.97
(5.84)
1.03
(5.99)
1.52
(6.78)
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Carataphydroc
hloride 50%
SP
500.0
5.10
(13.04)
2.20
(8.51)
2.35
(8.81)
1.18
(6.22)
1.35
(6.66)
3.08
(10.09)
Fipronil
5%(SC)
25.0
5.20
(13.17)
2.86 (9.73)
3.20
(10.29)
2.27 (8.65) 2.61 (9.28)
3.46
(10.72)
Control 0
5.16
(13.12)
5.34
(13.35)
6.21
(14.42)
6.44
(14.67)
7.37
(15.74)
9.65
(18.08)
SEm (0.78) (0.19) (0.21) (0.37) (0.20) (0.24)
C D (NS) (0.63) (0.69) (1.19) (0.64) (0.77)
DAS : Days after spray
Data in parenthesis are angular transformed
Table 3: Bio-efficacy of Cartaphydrochloride SG formulation against rice leaf folder
infesting rice and yield in Haryana
Treatments
Dose
(g/ha)
% damaged leaves
Yield
(q/ha)
Before
Treatment
2nd spray
a.i. 7 DAS 15 DAS
CartapHClSG
281.5 10.60 (18.98) 5.70 (13.70) 6.96 (15.28) 29.10
CartapHClSG
318.8 8.70 (17.14) 3.30 (10.46) 4.67(12.47) 30.00
CartapHClSG
375.0 9.50 (17.94) 2.10 (8.32) 2.70 (9.44) 32.80
CartapHClSG
500.0 8.30 (15.47) 1.10 (6.24) 1.58 (9.44) 34.10
CaratapHCl50% SP
500.0 10.60 18.98) 2.00 (8.08) 3.00 (9.94) 32.70
Fipronil 5% SC 25.0 8.90 (17.33) 3.29 (10.44) 5.08 (13.02) 30.44
Control 0 9.70 (18.14) 11.21 (19.55) 13.43 (21.49) 27.53
SEm (0.49) (0.30) (0.29) (0.51)
CD (NS) (0.97) (0.94) (1.65)
DAS : Days after spray
Data in parenthesis are angular transformed
EXAMPLE 3: BIO-EFFICACY OFCARTAPHCL SG ON DBM (DIAMOND BACK
MOTH) LARVAE IN CABBAGE
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[0048] The Diamond back moth, popularly known as DBM, is an endemic pest of cole (such
as cabbage and cauliflower) crops, occurring across the country. The larvae denude the plant
of cole crops making completely unfit for human consumption. Due to introduction of hybrid
varieties of cabbage and cauliflower, cultivation has started during off-season, which has
attracted more attack of DBM. To control DBM, farmers are currently using Cartap
hydrochloride 50% SP, besides other insecticides.
[0049] Cartap hydrochloride SG has given excellent control ofDBM @ 90 g a.i./ha and it has
given significantly better control than the existing Cartap hydrochloride 50% SP formulation
(Table 10).The new formulation of Cartap hydrochloride SG is eco-friendly, as with this
formulation 10 g a.i./ha less insecticide enters into the environment.
Table 4: Bio-efficacy of CartapHClSG against the DBM larvae in cabbage in Rajasthan
Treatments
Av. No of DBM larvae/ Plant
a.i.
Before
Spray
1 DAS 3 DAS 5 DAS 7 DAS
10
DAS
CartapHClSG
56.25
18.20
(4.38)
10.80
(3.42)
8.40
(3.06)
7.60
(2.92)
6.00
(2.62)
5.80
(2.59)
CartapHClSG
75.00
17.00
(4.24)
5.80
(2.60)
4.40
(2.32)
4.00
(2.22)
3.20
(2.04)
3.20
(2.04)
CartapHClSG
90.00
17.20
(4.26)
3.60
(2.12)
3.20
(2.04)
3.00
(1.98)
2.20
(1.78)
2.00
(1.71)
CartapHClSG
112.50
16.60
(4.19)
3.90
(2.20)
4.40
(2.32)
4.20
(2.28)
3.20
(2.04)
3.00
(1.98)
CartapHClSG
127.50
17.40
(4.28)
4.40
(2.32)
4.20
(2.27)
3.80
(2.18)
2.60
(1.89)
2.80
(1.94)
CartapHCl
50 % SP
100.00
19.10
(4.48)
3.90
(2.20)
5.10
(2.46)
4.90
(2.42)
3.10
(2.02)
3.80
(2.18)
Control 0
18.00
(4.35)
20.20
(4.60)
21.80
(4.77)
22.00
(4.78)
21.80
(4.77)
22.20
(4.80)
SEm (0.09) (0.13) (0.05) (0.14) (0.10) (0.16)
C D (NS) (0.42) (0.17) (0.46) (0.33) (0.51)
DAS : Days after spray / Data in parenthesis are angular transformed
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ADVANTAGES OF THE INVENTION
[0050] The present invention provides a water-soluble granular insecticidal composition
comprising an effective amount of Cartap hydrochloride to control and prevent crop pests.
[0051] The present invention provides a water-soluble granular insecticidal composition
comprising an effective amount of Cartap hydrochloride to control and prevent pests on rice
and cole crops, particularly stem borer and leaf folder of rice and DBM of cole crops.
[0052] The present invention provides a water-soluble granular insecticidal composition
comprising an effective amount of Cartap hydrochloride which is highly toxic to insects/pests
but of very low toxicity to humans and other warm-blooded animals.
[0053] The present invention provides an improved water-soluble granular
insecticidal composition containing a fast-acting stable synthetic toxicant.
[0054] The present invention provides a water-soluble granular insecticidal composition
comprising an effective amount of Cartap hydrochloride, which is effective at low dosage
thus reducing the impact on the environment.
[0055] The present invention provides a water soluble insecticidal composition which is
cheaper to manufacture.
[0056] The present invention provides water soluble granular composition which has better
efficacy as compared to existing soluble powder formulation.
[0057] The present invention provides water soluble insecticidal granular composition which
reduces the impact on environment and does not adversely affect the soil composition as
compared to coated sand granules.
[0058] Other advantages of the present invention will be apparent from the description of the
invention.
For Dhanuka Agritech Limited
Tarun Khurana
Regd. Patent Agent [INPA-1325]
Dated: 29th March, 2014
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CLAIMS
We claim:
1. A water soluble granular insecticidal composition comprising: (a) an effective amount of
Cartap hydrochloride; (b) at least one stabilizing agent; (c) at least one emulsifying agent; (d)
at least one binding agent; (e) at least one defoaming agent and (f) at least one diluent.
2. The water soluble granular insecticidal composition of claim 1, wherein the effective
amount of Cartap hydrochloride ranges from 70 to 80% w/w.
3. The water soluble granular insecticidal composition of claim 1, wherein the at least one
stabilizing agent is selected from the group comprising compounds having epoxy groups,
dibutylhydroxytoluene, butylhydroxyanisole, tetrakis[3-(3,5-di-tert-butyl-4-
hydroxyphenyl)propionyloxymethyl]methane, DL-tocopherol, propyl gallate, erysorbic acid,
sodium erysorbate, isopropyl citrate, phosphoric acid, isopropyl acid phosphate, cyclodextrin,
or tall oil fatty acids.
4. The water soluble granular insecticidal composition of claim 1, wherein the at least one
stabilizing agent is isopropyl acid phosphate.
5. The water soluble granular insecticidal composition of claim 1, wherein the at least one
emulsifying agent is selected from the group comprising ethoxylated and ethopropoxylated
alcohols and nonyl phenols, ethoxylatedtristeryl phenol, ethoxylatedtristeryl phenol
phosphates, ethoxylated and ethopropoxylated castor oil, polyoxyethylene and
polyoxyethylenenonylphenol ethers, polyvinyl pyrriolidone, calcium alkyl benzene
sulfonates, alkyl benzene calcium sulfate, and phenyl ethyl phenyl polyethylene glycolpolyoxypropylene
and proprietary blended emulsifiers or mixtures thereof.
6. The water soluble granular insecticidal composition of claim 1, wherein the at least one
emulsifying agent is polyoxyethylenenonylphenyl ether.
7. The water soluble granular insecticidal composition of claim 1, wherein the at least one
binding agent is selected from the group comprising hydroxymethyl cellulose, carboxy
methyl cellulose, soluble starch, polysaccharides, sucrose, starch syrup, dextrose,
methylcellulose, carboxymethyl cellulose, starch, polyethylene glycols,
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polyvinylpyrrolidones, partially hydroxylated polyvinyl acetate and polymeric adhesives or
mixtures thereof.
8. The water soluble granular insecticidal composition of claim 1, wherein the at least one
defoaming agent is selected from the group comprising methylated silicones,
polyorganosiloxane, and 2-ethylhexanol.
9. The water soluble granular insecticidal composition of claim 1, wherein the at least one
diluent is selected from the group comprising 4-0-B-D galactopyranosyl alpha-Dglycopyranose
and ammonium sulphate.
10. The water soluble granular insecticidal composition of claim 1, wherein said composition
is used to control and prevent crop pests.
11. The water soluble granular insecticidal composition of claim 1, wherein said composition
is used to control and prevent pests on rice and cole crops.
12. A method of preparation of the water-soluble granular insecticidal composition of claim
1, comprising the steps of:
(i) mixing Cartap hydrochloride, the at least one binding agent and the at least one diluent in
a vessel to form a homogenous mixture;
(ii) adding the at least one defoaming agent, the at least one emulsifying agent and the at least
one stabilizing agent to the homogenous mixture;
(iii) adding requisite quantity of water to make a dough wherein the dough is passed through
vertical extruder to produce homogenous extrudes/granules of desired dimensions;
(iv) drying the extrudes/granules in a dryer to reduce moisture content to a specified limit to
form dried granules;
(v) sieving the dried granules to remove dust and maintain sieve size as per the desired
dimensions of the extrudes.