Claims:We claim:
1. A fungicidal formulation comprising:
(A) 10 wt.% to 80 wt.% of at least one multi-site contact fungicide,
(B) 1.0 wt.% to 60 wt.% of at least one quinone outside inhibitors (QOI) fungicide, and
(C) a blend of modified alkyl naphthalene sulphonate and Kraft lignin polymer,
wherein the wt.% is based on the total weight of the formulation.

2. The fungicidal formulation as claimed in claim 1, wherein the fungicidal formulation further comprises 1.0 wt. % to 70 wt.% of at least one excipient selected from the group comprising of dispersing agents, wetting agents, defoaming agents,fillers and/or mixtures thereof.

3. The fungicidal formulation as claimed in claim 1 or 2, wherein the fungicidal formulation is devoid of polycarboxylate salt.

4. The fungicidal formulation as claimed in claim 1 or 2, wherein the fungicidal formulation comprises a blend of modified alkyl naphthalene sulphonate in the range of 1wt% to 10wt % and Kraft lignin polymer in the range of 1wt% to 10wt % based on the total weight of the formulation.

5. The fungicidal formulation as claimed in one or more of claims 1 to 4, wherein the multi-site contact fungicide is selected from the group comprising of inorganic fungicide, dithiocarbamate fungicide, phthalimide fungicide, chloronitrile fungicide, sulfamide fungicide, bis-guanidine fungicide, quinone and anthra-quinone fungicide, quinoxaline fungicide, maleimide fungicide, and thiocarbamate fungicide.

6. The fungicidal formulation as claimed in one or more of claims 1 to 5, wherein the multi-site contact fungicide is a dithiocarbamate fungicide selected from the group comprising of ferbam, mancozeb, maneb, metiram, propineb, thiram, zinc thiazole, zineb, and ziram.

7. The fungicidal formulation as claimed in one or more of claims 1 to 6, wherein the QOI fungicide is selected from the group comprising of azoxystrobin, coumoxystrobin, enoxastrobin, flufenoxystrobin, picoxystrobin, pyraoxystrobin, mandestrobin, pyraclostrobin, pyrametostrobin, triclopyricarb, kresoxim-methyl, trifloxystrobin, dimoxystrobin, fenaminstrobin, metominostrobin, orysastrobin, famoxadone, fluoxastrobin, fenamidone, and pyribencarb.

8. The fungicidal formulation as claimed in one or more of claims 2 to 7, wherein the wetting agent is selected from non-ionic surfactants, anionic surfactants, and a mixture of such surfactant salts of aliphatic monoesters of sulphuric acid.

9. The fungicidal formulation as claimed in one or more of claims 2 to 8, wherein the wetting agent comprises sodium lauryl sulphate, sulfoalkylamides, alcohol ethoxylate, polyoxy ethylene or polyoxy propylene copolymers, naphthalene sulphonic acid, naphthalene sulphosuccinates, fatty alcohol polyoxy ethylene, polyoxyethylene alkylphenol ether sulphonates, and salts thereof.

10. The fungicidal formulation as claimed in one or more of claims 2 to 9, wherein the dispersing agent is a lignin-based dispersant.

11. The fungicide formulation as claimed in one or more of claims 2 to 10, wherein the dispersing agent comprises one or more of ammonium, alkali metal and alkaline earth metal lignosulfonate salts, naphthalene sulfonate formaldehyde condensate, ligno sulphonate sodium salt, calcium lignosulphonates, modified ligno sulphonate salt, condensate phenyl sulphonic acid, sulphonated polystyrene, maleic anhydride co-polymer.

12. The fungicide formulation as claimed in one or more of claims 2 to 11, wherein the defoaming agent comprises one or more of polydimethyl siloxane, combination of fatty acid salts together with chelating agents & a polyacid polymer, long chain fatty acids, non-ionic surfactant (ethoxylated / fatty alcohols) with low cloud point, methylated silicones.

13. A process for preparing the fungicidal formulation as claimed in one or more of claims 1 to 12, said process comprising at least the step of granulating the fungicidal formulation to obtain the desired granule size.

14. A method of controlling plant disease, said method comprising applying the fungicidal formulation as claimed in one or more of claims 1 to 12 to a plant, a soil adjacent to a plant, or to soil where a seed is or will be planted.
, Description:FUNGICIDAL FORMULATION HAVING IMPROVED RAINFASTNESS

FIELD OF THE INVENTION
The present disclosure relates to a fungicidal formulation having improved rainfastness.

BACKGROUND OF THE INVENTION
Enhancement of agricultural products requires the protection of the crops and its produce from pest damage. Various chemicals and their formulations have been developed and are in use currently for the effective management of fungi. Due to the excessive use of fungicides, the pests/fungi gain resistance and become hard to kill. Physically compatible pesticide mixtures exhibit better pest management. These mixtures show multifaceted advantages than when applied individually and provide a synergistic effect. Various fungicidal formulations have been developed to control various fungi/pests. However, fungicides that are safer, that have excellent performance, lower dosages, easier to use, are economical and ecologically safe resulting in enhanced activity, are still being sought.

Multiple fungicide chemistry has been used to control wider variety of undesirable fungal diseases. However, no one particular fungicide is useful in all situations and repeated usage of a single fungicide frequently leads to the development of resistance to the fungicides. Accordingly, research is being performed to produce fungicides and combinations of fungicides that are safer, that have excellent performance, that having lower dosages, that are easier to use, and that cost less. Combinations are also being studied that produce synergism, i.e., the activity of two, or more, compounds exceeds the activities of the compounds when used alone.

Apart from the aforementioned properties, it is also desired that the fungicide has appropriate rainfastness properties or is rainfast. The Rainfastness of a fungicide refers to “the time needed between an application and a rain event for the product to maintain its effectiveness when compared to the same product applied in the absence of rain”. The rainfastness of each active is highly variable and depends on the physico-chemical properties of the active ingredient. Moreover, rainfall may also affect the active ingredient by washing away, physically removing or redistribution resulting in the active ingredient becoming less available. Generally, adjuvants are used to improve the rainfastness of crop protection products, particularly those products designed to improve the retention, penetration or spread across the plant surface.

There have been several studies for improving rainfastness of the fungicidal formulation. However, these fungicidal formulations have several limitations. For instance, aqueous formulations are prone to flocculation and gelation issues, whereas dry formulations have low suspensibility and aggregation.

Therefore, there is required a fungicidal formulation having enhanced rainfastness property by increasing the sticking activity and avoiding easy washing away of the active ingredients, thereby resulting in acceptable/improved efficacy, higher disease control and better crop yield.

SUMMARY OF THE INVENTION
In one aspect, the present invention is directed to a fungicidal formulation comprising 10 wt.% to 80 wt.% of at least one multi-site contact fungicide, 1.0 wt.% to 60 wt.% of at least one quinone outside inhibitors (QOI) fungicide, and a blend of modified alkyl naphthalene sulphonate and Kraft lignin polymer, wherein the wt.% is based on the total weight of the formulation.

In another aspect, the present invention is directed to a process for preparing the above fungicidal formulation. The process comprises at least the step of granulating the fungicidal formulation to obtain the desired granule size.

In yet another aspect, the present invention is directed to a method of controlling plant disease. The method comprises applying the above fungicidal formulation to a plant, a soil adjacent to a plant, or to soil where a seed is or will be planted.

DESCRIPTION OF THE INVENTION
The fungicidal formulation of the present invention advantageously enhances the rainfastness property by increasing the sticking activity and avoiding easy wash off of the active ingredients and results in improved efficacy, high disease control and better crop yield.

An aspect of the present disclosure relates to a fungicidal formulation comprising 10 wt.% to 80 wt.% of at least one multi-site contact fungicide, 1.0 wt.% to 60 wt.% of at least one quinone outside inhibitors (QOI) fungicide, and a blend of modified alkyl naphthalene sulphonate and Kraft lignin polymer, wherein the wt.% is based on the total weight of the formulation.

In an embodiment of the invention relates to a fungicidal formulation comprising 10 wt.% to 80 wt.% of at least one multi-site contact fungicide, 1.0 wt.% to 60 wt.% of at least one quinone outside inhibitors (QOI) fungicide, and a blend of modified alkyl naphthalene sulphonate in the range of 1.0 wt.% to 10.0 wt.%, and Kraft lignin polymer in the range of 1.0 wt.% to 10.0 wt.%, wherein the wt.% is based on the total weight of the formulation.

In an embodiment of the invention, the fungicidal formulation further comprises 1.0 wt. % to 70 wt.% of at least one excipient selected from the group comprising of dispersing agents, wetting agents, defoaming agents, fillers and or mixtures thereof.

In another embodiment of the invention, the fungicidal formulation is devoid of polycarboxylate salt. Polycarboxylate salt tends to decrease the suspensibility of the dithiocarbamate formulation when used at high concentration. Suspensibility is important parameter for crop protection product, if suspensibility of the formulation is low, it will lead to improper spray during application resulting in poor efficacy of the formulation

In yet another embodiment of the invention, the multi-site contact fungicide is selected from the group comprising of inorganic fungicide, dithiocarbamate fungicide, phthalimide fungicide, chloronitrile fungicide, sulfamide fungicide, bis-guanidine fungicide, quinone and anthra-quinone fungicide, quinoxaline fungicide, maleimide fungicide, and thiocarbamate fungicide.

In still another embodiment of the invention, the multi-site contact fungicide is a dithiocarbamate fungicide selected from the group comprising of ferbam, mancozeb, maneb, metiram, propineb, thiram, zinc thiazole, zineb, and ziram.

In a further embodiment of the invention, the quinone outside inhibitors QOI fungicide is selected from the group comprising of azoxystrobin, coumoxystrobin, enoxastrobin, flufenoxystrobin, picoxystrobin, pyraoxystrobin, mandestrobin, pyraclostrobin, pyrametostrobin, triclopyricarb, kresoxim-methyl, trifloxystrobin, dimoxystrobin, fenaminstrobin, metominostrobin, orysastrobin, famoxadone, fluoxastrobin, fenamidone, and pyribencarb.

In a still further embodiment of the invention, the wetting agent is selected from non-ionic surfactants, anionic surfactants, and a mixture of such surfactant salts of aliphatic monoesters of sulphuric acid. The wetting agent comprises sodium lauryl sulphate, sulfoalkylamides, alcohol ethoxylate, polyoxy ethylene or polyoxy propylene copolymers, naphthalene sulphonic acid, naphthalene sulphosuccinates, fatty alcohol polyoxy ethylene, polyoxyethylene alkylphenol ether sulphonates, and salts thereof.

In another embodiment of the invention, the dispersing agent is a lignin-based dispersant. The dispersing agent comprises one or more of ammonium, alkali metal and alkaline earth metal lignosulfonate salts, naphthalene sulfonate formaldehyde condensate, ligno sulphonate sodium salt, modified ligno sulphonate salt, calcium lignosulphonates, condensate phenyl sulphonic acid, sulphonated polystyrene, maleic anhydride co-polymer.

In yet another embodiment of the invention, the defoaming agent is selected from polydimethyl siloxane, combination of fatty acid salts together with chelating agents & a polyacid polymer, long chain fatty acids, non-ionic surfactant (ethoxylated / fatty alcohols) with low cloud point, methylated silicones.

In yet another embodiment of the invention, the filler is selected from lactose, sodium sulphate anhydrous, kaolin clay, bentonite clay, silica, calcium carbonate, talc.

In an embodiment, the multi-site contact fungicides inhibit fungal growth through multiple sites of action and have contact and preventive activity. Suitable multi-site contact fungicides can be selected from, such as but not limited to, inorganic fungicide, dithiocarbamate fungicide, phthalimide fungicide, chloronitrile fungicide, sulfamide fungicide, bis-guanidine fungicide, quinone and anthra-quinone fungicide, quinoxaline fungicide, maleimide fungicide, and thiocarbamate fungicide. The multi-site contact fungicide can be a mixture of the fungicides described in the list hereinabove.

Suitable inorganic fungicides can be selected from copper, sulphur, and salts thereof. For instance, copper oxychloride, copper sulfate, copper hydroxide and tribasic copper sulfate (Bordeaux mixture).

Suitable dithiocarbamate fungicides can be selected from ferbam, mancozeb, maneb, metiram, propineb, thiram, zinc thiazole, zineb, and ziram.

Suitable phthalimide fungicides contain a phthalimide molecular moiety and can be selected from captan, captafol, and folpet.

Suitable chloronitrile fungicides comprise an aromatic ring substituted with chloro- and cyano-substituents, for example chlorothalonil.

Suitable sulfamide fungicides can be selected from dichlofluanid, and tolylfluanid.

Suitable bis-guanidine fungicides can be selected from guazatine, and iminoctadine.

Suitable quinone and anthra-quinone fungicide is anilazine.

Suitable quinoxaline fungicide is chinomethionat, also known as quinomethionate.

Suitable maleimide fungicide is fluoroimide.

Suitable thiocarbamate fungicide is methasulfocarb.

In an embodiment, the multi-site contact fungicide is the dithiocarbamate fungicide described herein. In another embodiment, the multi-site contact fungicide is mancozeb.

The at least one multi-site contact fungicide can be present in an amount in between 10 wt.% to 80 wt.% based on the total weight of the formulation. In an embodiment, the at least one multi-site contact fungicide is present in an amount in between 15 wt.% to 80 wt.%, or in between 20 wt.% to 80 wt.%, or in between 25 wt.% to 80 wt.%. In another embodiment, the at least one multi-site contact fungicide is present in an amount in between 25 wt.% to 75 wt.%, or in between 30 wt.% to 75 wt.%, or in between 35 wt.% to 75 wt.%. In still another embodiment, the at least one multi-site contact fungicide is present in an amount in between 40 wt.% to 70 wt.%, or in between 50 wt.% to 70 wt.%, or in between 55 wt.% to 70 wt.%.

The fungicidal formulation also includes 1.0 wt.% to 60 wt.% of at least one quinone outside inhibitors (QOI) fungicide. Suitable QOI fungicides can be selected from, such as but not limited to, strobilurins, methoxy-acrylates, methoxy-acetamide, methoxy carbamates, oximino-acetates, oximino-acetamides, oxazolidine-diones, dihydro-dioxazines, imidazolinones, and benzyl-carbamates.

In an embodiment, the QOI fungicides can be selected from azoxystrobin, coumoxystrobin, enoxastrobin, flufenoxystrobin, picoxystrobin, pyraoxystrobin, mandestrobin, pyraclostrobin, pyrametostrobin, triclopyricarb, kresoxim-methyl, trifloxystrobin, dimoxystrobin, fenaminstrobin, metominostrobin, orysastrobin, famoxadone, fluoxastrobin, fenamidone, and pyribencarb.

The QOI fungicides can be a mixture of the fungicides described in the lists hereinabove. In an embodiment, the QOI fungicide is azoxystrobin.

The at least one QOI fungicide can be present in an amount in between 1.0 wt.% to 60 wt.% based on the total weight of the formulation. In an embodiment, the at least one QOI fungicide is present in an amount in between 1.0 wt.% to 55 wt.%, or in between 1.0 wt.% to 50 wt.%, or in between 1.0 wt.% to 45 wt.%. In another embodiment, the at least one QOI fungicide is present in an amount in between 2.5 wt.% to 45 wt.%, or in between 2.5 wt.% to 40 wt.%, or in between 2.5 wt.% to 35 wt.%. In still another embodiment, the at least one QOI fungicide is present in an amount in between 5.0 wt.% to 30 wt.%, or in between 5.0 wt.% to 25 wt.%, or in between 5.0 wt.% to 20 wt.%.

The fungicidal formulation also includes the blend of modified alkyl naphthalene sulphonate in the range of 1.0 wt.% to 10.0 wt.%, and Kraft lignin polymer in the range of 1.0 wt.% to 10.0 wt.%. The improvement in rainfastness properties of the present invention can be attributed to the blend. In particular, the blend increases the stickiness of the fungicidal formulation. The excipient blend in the particular concentration is necessary for the stability/efficacy of the formulation.

Another aspect of the present disclosure relates to a process for preparing the fungicidal formulation comprising at least the step of granulating the components of the fungicidal formulation to obtain the desired granule size. Azoxystrobin technical is blended with sodium ligno sulfonate, kraft lignin polymer, sodium lauryl sulfate, alkyl naphthalene sulphonate and defoamer and clay if required is charged in a homogenizer containing pre-determined quantity of water at 20 ºC. This material is bead milled to obtain homogenous slurry having particle size in the range of 1 to 5 micron. To the milled slurry mancozeb technical, balance quantity of defoamer is added and blended in the homogenizer for two hours. The homogenized slurry is passed through 100 mesh sieve and obtained feed slurry is spray-fluidized at inlet temperature between 90 and 300 degree and dried to obtain granules having moisture content less than 2%.

Yet another aspect of the present disclosure relates to a method of controlling plant disease comprising applying the fungicidal formulation to a plant, a soil adjacent to a plant, or to soil where a seed is or will be planted.

The invention shall now be described with reference to the following specific examples. It should be noted that the examples appended below illustrate rather than limit the invention and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the present invention.

Examples:
Example 1: Azoxystrobin 8.3% + Mancozeb 66.7% - WG
8.7 gm of Azoxystrobin technical, 4.5 gms of Sodium lignosulfonate, 1.4 gms of Kraft Lignin polymer, 2.5 gms of Sodium lauryl sulfate, 2.5 gm of naphthalene alkyl sulphonate and 0.25 gms of defoamer are blended in a homogenizer containing required amount of water to obtain Mixture A having slurry concentration in the range of 30% to 70 %.
Mixture A is bead milled to a fine particle size to obtain a substantially homogenized slurry. Typically, the particle size of the substantially ground slurry is in the range of 1 microns to 5 microns.
79.90 grams of Mancozeb is blended with ground slurry along with balance defoamer to obtain homogeneous uniform blend of slurry Mixture B . The homogenized slurry Mixture B is passed through 100 mesh sieve and obtained feed slurry is spray-fluidized at inlet temperature between 90 and 300 degree and dried to obtain granules having moisture content less than 2% .

Example 1a: Azoxystrobin 10.0% + Mancozeb 55.0% - WG:
10.45 gm of Azoxystrobin technical, 7.5 gm of Sodium lignosulfonate, 1.7 gm of Kraft Lignin polymer, 4.0 gm of Sodium lauryl sulfate, 2.5 gm of naphthalene alkyl sulphonate, Clay 5.85 gm and 0.5 gm of defoamer are blended in a homogenizer containing required amount of water to obtain Mixture A having slurry concentration in the range of 30% to 70%.
slurry. Typically, the particle size of the substantially ground slurry is in the range of 1 microns to 5 microns.
67 grams of Mancozeb is blended with ground slurry along with balance defoamer to obtain homogeneous uniform blend of slurry Mixture B. The homogenized slurry Mixture B is passed through 100 mesh sieve and obtained feed slurry is spray-fluidized at inlet temperature between 90 and 300 degree and dried to obtain granules having moisture content less than 2%.

Table 1: Various formulations comprising Azoxystrobin + Mancozeb, according to the present invention, in different ratios was prepared.
Example 1 Example 2 Example 3 Example 4 Example 5 Example 6
Mancozeb 79.90 79.90 79.90 79.90 79.90 80
Azoxystrobin 8.7 8.7 8.7 8.7 8.7 8.7
Sodium lignosulfonate 4.5 4.5 4.5 0 4.5 8.5
kraft lignin polymer 1.4 1.4 0 1.4 1.4 0
Sodium lauryl sulphate 2.5 2.5 2.5 2.5 0 2.4
Alkyl naphthalene sulphonte 2.5 0 2.5 2.5 2.5 0
Polycarboxylate 0 0 0 0 0 0.2
Defoamer 0.5 0.5 0.5 0.5 0.5 0.2
Rainfastness

10 ml water wash 76.66 27.08 41.37 66.66 70 38.77
15 ml water wash on glass plate 46.51 14.58 20.68 46.66 46 26.53

Rainfastness properties of the formulation was determined by the following method
10 gm sample of the product was weighed in a 100 ml volumetric flash and water was added to prepare a suspension. Clean glass slides were tarred on a mettler balance and 5 g of the above suspension was added to the glass plate, and exact weight of the material added was determined. The slides were air-dried under a laboratory hood. The slides containing dried material were washed with 10 ml of water (the water was applied from a dispensing pipette on the slides kept at an angle of 45°). The washed slides were dried and weighed to analyze the material retained on the glass plate. Similar study was done using 15 ml of water.

Surprisingly it is observed that in example no 1 combination of alkyl naphthalene sulfonate and kraft lignin is able to provide rain fastness properties of 46.5% while in experiment no 2 and 3 the rain fastness properties is 14.58% when alkyl naphthalene sulfonate is not used in the formulation and is 20.68% when kraft lignin is not used in the formulation respectively indicating that the combination of the dispersing agent at predetermined ratio is imparting the sticking property on the glass plate. In example no 6 rain fastness property was 26.53% when polycarboxylate was used and kraft lignin and alkyl naphthalene sulphonate were not used.

Bio-efficacy Data:
The pesticidal composition of the present invention was tested for its bioefficacy against Powdery mildew of Chilli. Table 2 hereinbelow summarizes the treatment details and the dosage.
Table 2: Bio-efficacy of Azoxystrobin 8.3% + Mancozeb 66.7% WG against Powdery mildew (Leveillula taurica) of Chilli
Tr. No. Treatment Details Dose Dose PDI before 1st spray PDI after 15 days of 1st spray PDI after 15 days of 2nd spray PDI after 15 days of 3rd spray % Control over Untreated
(g a.i./ha) (g/ha)
T1 Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 1) 124.5 +1000.5 1500 0.00
(0.71) 2.00
(8.08) 3.20
(10.24) 3.50
(10.76) 93%
T2 Azoxystrobin 10% + Mancozeb 55% WG
(Example 1a) 150 + 825 1500 0.00
(0.71) 3.56
(10.87) 5.00
(12.91) 5.30
(13.35) 90%
T3 Azoxystrobin 8.3% + Mancozeb 66.7% WG Example 6 124.5 +1000.5 1500 0.00
(0.71) 4.23
(11.87) 6.00
(14.17) 6.70
(14.95) 87%
T4 Mancozeb 75%WP 1125 1500 0.00
(0.71) 15.33
(23.05) 22.00
(27.97) 27.00
(31.30) 47%
T5 Azoxystrobin 25% SC 125 500 0.00
(0.71) 7.33
(15.70) 13.30
(21.40) 14.00
(21.96) 73%
T6 Mancozeb 75%WP + Azoxystrobin 25% SC (Tank Mix) 1125 + 125 1500 + 500 0.00
(0.71) 4.5
(12.23) 6.70
(14.95) 8.00
(16.41) 84%
T7 Control 0.00
(0.71) 23.33
(28.87) 33.30
(35.26) 51.00
(45.47) 0%
Sem NS 0.33 0.45 0.6
CD@5% NS 1.01 1.37 1.84

Results & discussion:
Azoxystrobin 8.3% + Mancozeb 66.7% water dispersible granules (WG) (Example 1) @ 1500 gm/ha recorded the best control of Powdery mildew (Leveillula taurica) in the chilli with percent disease incidence (PDI) of 3.50%. i.e., 93 percent control over untreated control, after 15 days after third application and was on par with Azoxystrobin 10% + Mancozeb 55% WG (Example 1b) @ 1500 gm/ha with PDI of 5.30% and superior over rest of the treatments.
Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 1) @ 1500 gm/ha recorded the best control of Powdery mildew (Leveillula taurica) in the chilli with percent disease incidence (PDI) of 3.50%. is superior over other treatments, Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 6) @ 1500 gm/ha with the PDI of 6.70%, Mancozeb 75%WP + Azoxystrobin 25% SC (Tank Mix) @ 1500 gm + 500 ml/ha with PDI of 8.00%, Azoxystrobin 25% SC @ 500 ml/ha recorded PDI of 14.00%, Mancozeb 75%WP @ 1500 gm/ha recorded PDI of 27.00%, whereas untreated control recorded the disease of 51.00% PDI of Powdery mildew in Chilli.
The pesticidal composition of the present invention was tested for its bioefficacy against Fruit rot of Chilli. Table 3 hereinbelow summarizes the treatment details and the dosage.
Table 3: Bio-efficacy of Azoxystrobin 8.3% + Mancozeb 66.7% WG against fruit rot (Colletotrichum capsici) of Chilli

Tr. No. Treatment Details Dose Dose PDI before 1st spray PDI after 15 days of 1st spray PDI after 15 days of 2nd spray PDI after 15days of 3rd spray % Control over Untreated
(g a.i./ha) (g/ha)
T1 Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 1) 124.5 +1000.5 1500 0.00
(0.71) 2.56
(9.19) 3.60
(9.19) 4.60
(12.32) 90%
T2 Azoxystrobin 10% + Mancozeb 55% WG (Example 1a) 150 + 825 1500 0.00
(0.71) 4.81
(12.65) 6.60
(12.65) 6.60
(14.79) 86%
T3 Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 6) 124.5 +1000.5 1500 0.00
(0.71) 6.79
(15.09) 7.3
(15.09) 7.60
(16.02) 84%
T4 Mancozeb 75%WP 1125 1500 0.00
(0.71) 8.92
(17.37) 16.70
(17.37) 17.30
(24.60) 63%
T5 Azoxystrobin 25% SC 125 500 0.00
(0.71) 7.44
(15.83) 11.40
(15.83) 12.40
(20.65) 74%
T6 Mancozeb 75%WP + Azoxystrobin 25% SC (Tank Mix) 1125 + 125 1500 + 500 0.00
(0.71) 7.85
(16.26) 9.70
(16.26) 9.80
(18.22) 79%
T7 Control 0.00
(0.71) 14.44
(22.32) 32.00
(22.32) 46.90
(43.19) 0%
Sem NS 0.39 0.39 0.66
CD@5% NS 1.18 1.18 2.01

Results & discussion:
Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 1) @ 1500 gm/ha recorded the best control of fruit rot (Colletotrichum capsici) in chilli with percent disease incidence (PDI) of 4.60%. i.e., 90 percent control over untreated control, after 15 days after third application and was on par with Azoxystrobin 10% + Mancozeb 55% WG (Example 1b) @ 1500 with PDI of 6.60% and superior over rest of the treatments,
Azoxystrobin 8.3% + Mancozeb 66.7% WG (Example 6) @ 1500 g/ha with the PDI of 7.60%, Mancozeb 75%WP + Azoxystrobin 25% SC (Tank Mix) @ 1500 gm + 500 ml/ha with PDI of 9.80%, Azoxystrobin 25% SC @ 500 ml/ha recorded PDI of 12.40%, Mancozeb 75%WP @ 1500 gm/ha recorded PDI of 17.30%. Whereas untreated control recorded the disease of 46.90% PDI of fruit rot in Chilli.