KR20170046092A - Herbicidal combination - Google Patents

Abstract

The present invention relates to a novel and improved herbicide combination comprising, in addition to an agriculturally acceptable excipient, an active component from a triazolopyrimidine herbicide group and an active component from an oxadiazole herbicide group. The present invention discloses a herbicide composition comprising the combination, a method of preparing the composition, and a use of the combination and the composition. The novel combination specifically comprises penoxsulam and oxadiazon as active components in addition to an agriculturally acceptable excipient. The composition of the present invention is very effective at controlling undesirable shrubs and trees, and provides the advantages of controlling weeds over wide areas and having a wide range of uses.

Description

HERBICIDAL COMBINATION

Field of invention

The present invention relates to a novel, stable, synergistic, broad, environmentally safe herbicide combination for controlling both narrow-leaved and broad-leaved weeds in rice farming without any phytotoxicity and environmental pollution It is about water. The present invention also relates to compositions comprising the novel combinations, methods of making such compositions, and uses of the herbicide compositions.

BACKGROUND OF THE INVENTION

Protecting crops from weed and other kinds of undesirable vegetation threats is a global agricultural problem. In an attempt to prevent this problem, many researchers in the field of synthetic chemistry have produced a number of different formulations. There remains, however, an area of research and development of novel agricultural formulations that can be used to protect crops, which can be environmentally safe, cost-effective, and that can act on both lobular and photoperiod weeds during critical cropping .

In addition, most commercial herbicides are selective in their action. A common problem with selective herbicides is the range of weed control, which refers to the range of weed species that are effectively controlled by herbicides, but does not include all the various weeds that affect crops. Therefore, two or more herbicides are sprayed at the same time to implement the maximum range of control conventionally. This method, however, requires a lot of maneuvering and hard work in ascertaining the compatibility between the active ingredients and the specific proportions at which these ingredients should be combined in order to achieve the desired maximum result. Another common problem with many commercial herbicides is their narrow scope of use. Most of these provide weed control before or after germination.

Some applications disclose certain combinations of herbicides, but their compositions cause many problems. For example, Chinese patent CN 104488919 discloses an oil-based oil suspension consisting of Penoxsulam and Oxadiargyl for controlling both grassy, thrush and weedy weeds in rice fields, Each of the two active ingredients is present in an amount ranging from 1-30% w / w of the composition with agriculturally acceptable excipients. However, since most oil-based suspensions contain oil-based petroleum solvents or organic solvents, this presents staining and odor problems and also causes environmental problems.

Therefore, there is a need in the art to provide herbicide combinations and compositions that meet the various requirements and provide various benefits of broad weed control range, cost reduction, and reduced residue buildup.

Object of the invention

It is an object of the present invention to provide a novel, synergistic, economical and environmentally safe herbicide combination, a composition comprising such a combination, a process for preparing such a composition and the use of such a combination and composition.

SUMMARY OF THE INVENTION

This Summary is not intended to identify key features of the subject matter of the claims and is not intended to be used to determine or limit the scope of the claimed subject matter.

The present invention relates to a new and improved herbicide combination comprising an active ingredient selected from the group of triazolopyrimidine herbicides, an active ingredient selected from the group of oxadiazole herbicides, together with agriculturally acceptable excipients. The present invention also discloses compositions comprising such combinations, methods of making such compositions, and uses of the combinations and compositions.

The novel combination of the present invention includes phenoxhlam and oxadiazon. The composition comprises phenoxulam and oxadiazone along with agriculturally acceptable excipients. The compositions of the present invention are effective in controlling undesirable vegetation and provide a wide range of effects.

BRIEF DESCRIPTION OF THE DRAWINGS
The following drawings form a part of this application and are directed to other illustrative aspects of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The invention may be better understood with reference to the drawings in conjunction with the detailed description of specific embodiments provided in this application.
Figure 1 shows untreated rice covered with light leaf weeds.
Figure 2 shows paddy (with a capacity of 8.5 + 112.5 gm ai / acre) treated with herbicide compositions of the present invention, designated CCP-1914SC
Fig. The paddy after 30 days after treatment with the herbicide composition of the invention (8.0 + 112.5 gm ai / acre), designated as CCP-228SC, is compared and shown.

details

Rice or duck party sativa (Oryza sativa) (Asian rice) is the world's population in many regions, particularly the staple most widely consumed in Asia. Rice is a carbohydrate (starch), its most important ingredient, has high nutritional value and provides instant energy. Rice is an important part of an ideal complete food because it has negligible fat and lipid content and high energy content.

Rice straw is used for cattle feed and in the domestic industry for the manufacture of various articles (hats, mats, ropes, etc.). Rice husks are used as food for animals. In addition, rice has important medical value and is used to treat many health-related chronic diseases such as dyspepsia, diabetes, arthritis, paralysis, epilepsy, and provides strength to pregnant and lactating women.

India is an important rice cultivation center, with more than a quarter of the arable land offering rice (2011-12). In India, rice is cultivated in a wide range of ecosystems, from irrigated to shallow lowlands, medium-deep lowlands and deep-water highlands. Weeds are a major hurdle to rice production, and they cause significant production losses in rice fields, from extreme conditions down to full crop loss ranges. In fact, among the losses due to various biologic stresses, weeds are known to account for almost a third.

Weeds not only lead to large reductions in rice production, but also increase crop costs, reduce input efficiency, impair agricultural practices, deteriorate quality, and provide alternative breeds of pests, It affects not only the aesthetic appearance of the ecosystem, but also native biodiversity, and affects the health of humans and cattle. Therefore, weed control is a prerequisite for improving the productivity of rice in India, which is further needed to meet the increasing nutritional needs of the growing population.

The term "herbicide " as used herein means an active ingredient which kills plants, or controls the growth of plants or otherwise adversely modifies them.

The term " herbicidally effective amount "refers to the amount of active ingredient that causes adverse transformation effects and includes deviations from natural development, altered regulation, desiccation, retardation, and the like .

The term "plants and vegetation" includes budding seeds, new seedlings and established plants.

The present invention relates to a novel, stable, synergistic, broad, environmentally safe and cost-effective method for controlling both narrow-leaved and broad-leaved weeds in rice plants without any phytotoxicity and environmental pollution Effective herbicide combinations.

The present invention relates to novel, stable, synergistic, potent and / or beneficial compositions comprising, in particular, an active ingredient selected from the group of triazolopyrimidine herbicides, an active ingredient selected from the group of oxadiazole herbicides and one or more agriculturally acceptable excipients, To a broad, environmentally safe herbicide combination.

The combination of the present invention increases the weed or virulence of the two active ingredients, the active ingredient first belonging to the triazolopyrimidine group and the active ingredient belonging to the second oxadiazole group, in a different specific mode of action ≪ / RTI > Therefore, a composition comprising a combination of the present invention is very effective and provides an efficient solution for controlling both light and small lobes in rice growing.

The present invention also includes a composition comprising an active ingredient selected from the group of triazolopyrimidine herbicides, an active ingredient selected from the group of oxadiazole herbicides, together with agriculturally acceptable excipients.

The synergistic herbicide combinations of the present invention include:

a) One or more active ingredients belonging to the triazolopyrimidine group

b) At least one active ingredient belonging to the oxadiazole group, wherein the weight ratio of the components (a): (b) ranges from 1: 1 to 1:30.

The triazolopyrimidine herbicides may be selected from the group comprising chloramullum, diclosulam, florulam, flumemullaham, methosulam, phenoxhlam, piroxsulam, preferably the triazolopyrimidine herbicide is selected from the group consisting of phenox It's Schlum.

1,5- c] pyrimidin-2-yl) -6- (2,2-difluoroethoxy) -N- (5,8- dimethoxy- [1,2,4] triazolo [ (trifluoromethyl) phenoxy syulram which is also known as a benzenesulfonamide is Echinacea furnace enclosure O species (Echinochloa spp.), as well as many broadleaf, bangdongsanigwa and aquatic weeds, for example, materials wonder (Alisma plantago-aquatica) in rice , Ammania coccinea, Cyperus difformis, and Scirpus mucronatus . Phenoxalam is an inhibitor of the synthesis of branched chain amino acids (leucine, isoleucine and valine) (ALS-acetolactate synthase). Selective action is based on selective metabolism into inactive metabolites. Phenoxalam acts as a permeable (systemic action), mainly absorbed through the leaves, and secondly through the roots, and is transported in both the body and the body part. Phenoxalam is mainly applied as a post-germination herbicide, which causes immediate inhibition of growth, and plants are reddish at their ends.

The triazolopyrimidine herbicide may be present in an amount ranging from 1 to 24% w / w of the total weight of the herbicide combination.

The oxadiazole herbicide can be selected from the group comprising oxadiazole or oxadiazone, preferably the herbicide is oxadiazone.

Oxadiazon is the common name for 5-tert-butyl-3- (2,4-dichloro-5-isopropoxyphenyl) -1,3,4-oxadiazol-2 (3H) -one. Oxadiazon is an effective selective contact herbicide against rice plants and dicotyledonous plant weeds. Oxadiazone is the germination of vines, annual plants, weeds and grasses in carnations, gladioluses, roses, fruit and bushes (including citrus), vines, ornamental trees and shrubs, hops, cotton, rice, soybeans, sunflowers, It is a protoporphyrinogen oxidase inhibitor that is used for pre-control and post-germination control of vine plants and annual leaf weeds.

The oxadiazole herbicide may be present in an amount ranging from 1 to 28% w / w of the total weight of the herbicide combination.

Without wishing to be bound by theory, surprisingly, when these herbicides are used together in an optimized amount, the resulting combination exhibits higher activity against harmful weeds, and the range of controlled weeds is less than the weed control range for the individual components The wider was found. Moreover, when combining herbicides as described in the present application, the amount of individual herbicides can be reduced, reducing toxicity and reaching a wider range of uses.

In addition, since the capacity of the individual components of the formulation of the present invention is much smaller than the capacity of the individual components when used alone, the remaining amount in the soil as well as the crop is also less than the remaining amount when the individual components are used, Lt; RTI ID = 0.0 > and / or < / RTI > Therefore, the formulation of the present invention is environmentally safer than its parent compounds. At such low concentrations, all of the components of the combination are generally very safe for the environment and for non-target organisms, including beneficial insects and humans.

Moreover, it is well known that it is important that weed management is carried out during various stages of production in order to achieve effective weed control on crops such as rice. It has surprisingly been found in the present invention that the formulations of the present invention provide a wide range of use, i. E. The formulations of the present invention preferably control weeds in a range of use from 2 to 20 days after transplantation of rice.

Larger uses are desirable because they provide greater flexibility for farmers and open opportunities for both pre- and post-emergence control of weeds, which increases the efficacy and cost-effectiveness of herbicide formulations. The formulations of the present invention therefore have a wider range of applications than the individual components of the combination and composition.

In another embodiment, the present invention discloses a composition comprising an active ingredient first belonging to triazolopyrimidine herbicides, secondly an active ingredient selected from the group of oxadiazole herbicides, and agriculturally acceptable excipients.

Agriculturally acceptable excipients are selected from the group comprising cryoprotectants, wetting / dispersing agents, anti-foaming or deforming agents, biocides, thickeners, demineralized water.

Cryoprotectants include monoethylene glycol, diethylene glycol; ≪ / RTI > polypropylene glycol. In a preferred embodiment, the cryoprotectant is polypropylene glycol. In another preferred embodiment, the cryoprotectant is present in an amount ranging from 2 to 8% w / w of the total weight of the herbicidal composition.

The humectant or dispersant is selected from the group comprising non-ionic surfactants and mixtures of amine salts of ethoxylated phosphate tristyryl phenol, derivatives of alkylaryl ethoxy ethanol, amine salts of polyaryl etherphosphates or mixtures thereof . Preferably, the wetting or dispersing agent is a mixture of a non-ionic surfactant and an amine salt of ethoxylated phosphate tristyryl phenol.

The wetting or dispersing agent may be present in an amount ranging from 1 to 10% w / w of the total weight of the herbicidal composition.

The deformer may be a polydimethylsiloxane emulsion. The deformer is present in an amount ranging from 0.01 to 1% w / w of the total weight of the herbicide composition.

In another embodiment, the composition of the present invention further comprises a biocide. The biocide is preferably used in an amount ranging from about 0.01 to about 1.0% w / w of the total weight of the herbicidal composition. The biocide can be formaldehyde, and its action involves protecting the formulation against fungal attack resulting from the presence of water with xanthan gum in the formulation. The thickener may be xanthan gum. The thickener is present in an amount ranging from about 0.01 to 1.0% w / w of the total weight of the herbicidal composition.

In yet another embodiment, the composition of the present invention may be formulated as an emulsifiable concentrate (EC), a wettable powder (WP), a liquid concentrate (SL), a soluble powder (SP) (CS), a water-dispersible granule (WG), a micro-emulsion (ME), a suspension granule or an amphoteric surfactant (SE). Preferably, the composition is present as a Suspension Concentrate (SC). The liquid wettable agent may be water based.

The solvent can increase the toxicity to the operator and the environment, damage the sprayer, and start to form crystals upon freezing. In some cases, the solvent also causes phytotoxicity. Therefore, liquid wax formulations do not have these drawbacks. The efficacy of controlling the pest (weed) population in crops is increased by the use of aqueous formulations. Water soluble formulations minimize exposure to disasters, are easy to dilute and spray, are dust free, are easy to handle, and provide excellent spray tank dilution. This shows better adhesion and transmission to the target.

In yet another embodiment, the invention further provides a method of making a herbicide formulation. The composition of the present invention can be obtained by a method comprising the steps of:

i) Dissolving a dispersant and a wetting agent in water to obtain a mixture;

ii) Adding a cryoprotectant to the mixture of step (i);

iii) Adding the active ingredient from the triazolopyrimidine group, preferably phenoxhlam, and oxadiazole, preferably oxadiazone, to the mixture of step (ii);

(iv) Adding a deformer to the mixture of step (iii) to obtain a homogenous mass;

(v) Reducing the uniform material size of step (iv) to achieve a particle size distribution in the range of 1-10 microns;

(vi) And adding a 2% xanthan gum aqueous solution to the product of step (v) under mixing to obtain the liquid wettable powder of the present invention.

In yet another embodiment, the present invention also relates to a method for controlling undesirable vegetation in rice using said composition.

Herbicide compositions can be used in the field of crops as shown in Table 1 below, among a variety of applications for rice protection against numerous lobular and broad leaf weed populations.

Benefits of the invention:

1. The combination of the present invention contributes to improved agricultural practices and provides improved crop protection coverage to farmers.

2. The combination of the present invention is stable, functioning synergistically in stability and efficacy, and substantially improving the range of use of the mixture in controlling both the lobular and weedy populations in rice.

3. The combination of the present invention provides a wide range of applications, thus providing greater flexibility in the time of herbicide spraying to the producer or farmer, as well as providing opportunities both before germination and after germination of the herbicide, Increase cost-effectiveness.

4. The composition of the present invention is water-based and environmentally safe since it does not use an organic solvent.

5. The combination of the present invention is cost effective, thereby reducing the economic pressures of farmers.

6. The combination of the present invention has no phytotoxic effect on the crop.

7. The compositions of the present invention are environmentally friendly and do not produce any soil residues.

Those skilled in the art will understand that the invention described in this application can be modified and modified in addition to those specifically described. It is to be understood that the invention described in this application includes all such modifications and alterations. The invention also includes all steps, features, compositions and compounds referred to or referred to herein, individually or collectively, and any and all combinations of any two or more of the steps or features do.

Example

The following examples are provided for the purpose of illustrating the invention only and should not be construed as limiting the invention, as many variations thereof may exist without departing from the scope and spirit of the invention.

Example 1: Combination of the present invention

Two different combinations of the present invention, designated CCP 1914 SC and CCP 228SC , were formulated into the compositions as shown in Tables 2 (a) and (b).

Example  2: Combination  Liquid phase Hydrating agent  Manufacturing of formulations

The dispersants or wetting agents listed in Table 2 are first diluted in demineralized water and dissolved by high shear mixing. A cryoprotectant was then added to the mixture. Phenoxalamic technical and oxadiazon technical were then added to the mixture at the desired concentrations. Deformers were added and mixed to produce a homogeneous material.

The thus obtained homogeneous materials were ground and mixed in a pulverizer, and the mixture was distributed in a desired particle size distribution, that is, a particle size of 1-10 microns. Thereafter, 2% xanthan gum aqueous solution (thickener) was added to the resulting mixture with gentle stirring. Mixing was continued until a homogeneous material was obtained. Finally, qualitative variables were checked.

Example 3: Biological test of the present invention

The combination of the present invention prepared in Example 2 was tested for its effect on Kharif crop against rice. We tested PR-116 for various rice cultivation at Goolarbhoj. Crops were planted in a random block design at a relative humidity of 72%, 32 ° C, with a plot size of 50 square meters, 10 cm spacing between plants and 30 cm spacing.

The combination of the present invention was calculated and added to the volume of water required for injection (150 liters / acre). The spray tank was filled with half of the required clean water volume, then the inventive combination measured (depending on the volume) was added and the other half of the water was added. The solution was well stirred and sprayed tightly throughout the plant. A Knapsack sprayer equipped with a boom with flat fan nozzles was used to spray the herbicide formulation. The three spray forms are as follows: before germination and after initial germination and after germination. Experiments were designed in random block design with 21 treatments and 3 repetitions.

Studies on the bio-potency and phytotoxicity of novel herbicidal compositions, CCP-1914SC (19% phenoxhlam and 14% oxadiazone) on various lobular and broad-leaf weeds in rice farms were conducted.

Table 3 provides details of the formulation of the individual components, as well as the treatment of rice crops with conventional formulations already known in the prior art, as well as the novel formulation (CCP-1914SC) of the present invention.

Note: CCP-1914 SC contains 19% of phenoxhlam and 14% of oxadiazone SC

3 (A): Biological Efficacy Study

Assessment of bio-efficacy : randomly selected from each replicate at 30 DAA (days after treatment) and 60 DAA (days after treatment). The number of viable / living weed species / plant groups was counted from the area.

Weed control: The control percentage of the weed population was calculated according to the following equation based on the number of live weed populations:

×100 Weed Control Percentage =

× 100

Where C = number of weed plant populations in the control plot

T = number of weed plant populations in treated chart

Test results obtained after treating the rice crop with the herbicide combination or composition disclosed in the present application are shown in Tables 4, 5, 6, 7, 8 and 9.

CCP-1914 SC phenoxhlam 19% + oxadiazone 14% SC

result:

Tables 4 and 5 provide efficacy data for sprouting (0-3 days after planting) of the herbicidal compositions of the present invention, designated as CCP-1914 SC, for the leafy weeds and light leaf weeds in rice. CCP-1914 SC at an active ingredient concentration dose of 8.0 + 116.25 gm and 8.0 + 112.5 gm provided a significant reduction in both the lobular and light weedy populations, respectively, with 8.4 + 116.25, 8.4 + 112.5 and 7.5 + 116.25, 7.5 Followed by a decrease in CCP-1914 SC capacity of + 112.5.

Tables 6 and 7 provide efficacy data of the herbicidal compositions of the present invention, expressed as CCP-1914 SC for leafy weeds and light leaf weeds in rice, after initial germination (9-12 days after planting). Active compound concentration doses of 8.0 + 116.25 and 8.0 + 112.5 gm of CCP-1914 SC provided significant reductions in both the lobular and light leaf weedy populations, with 8.4 + 116.25, 8.4 + 112.5 and 7.5 + It was observed that the CCP-1914 SC capacity of 112.5 was then reduced.

Tables 8 and 9 provide efficacy data for sprouting (21-25 days after planting) of the herbicidal compositions of the present invention, designated as CCP-1914 SC, against the leafy weeds and light leaf weeds in rice. Active compound concentration doses of 8.0 + 116.25 and 8.0 + 112.5 gm of CCP-1914 SC provided significant reductions in both the lobular and broad-leaf weed populations, with 8.5 +116.25, 8.5 + 112.5 and 7.5 + It was observed that the CCP-1914 SC capacity of 112.5 was then reduced.

3 (B): Evaluation of phytotoxicity:

Visual observations on product testing were recorded on days 3, 7 and 10 (DAA) after application. The observed variables were leaf damage, vein metaplasia, epiphyseal growth, posterior growth and forgery at the end / surface of the leaves. Score grades 1-10 for evaluating leaf damage symptoms at the end / surface of the leaves are given in Table 10 below.

result:

As shown in Table 11, treatment with CCP-1914 SC for spraying before germination (0-3 days after planting), after initial germination (9-12 days after planting) and after germination (21-25 days after planting) No phytotoxic symptoms were observed in any plot.

conclusion:

Average data on the number of weeds weed control in a station-no claws Oh Kolo out leaflets current categories for small, in Figure station-no claws ah Cruz Galicia, Dizzy other dry chamber from Leah species and optical yeopryu categories Leah Quad Li poly-Ata, mono Korea Species (monochoria spp.) and alterantaceous syringes .

In the bio-efficacy studies performed with the herbicide compositions of the present invention, designated as CCP-1914 SC, the graphs treated with the active ingredient concentration capacities of 8.0 + 116.25 gm and 8.0 + 112.5 gm show that any of the pre-germination, post- Significantly reduced both the lobular and broad-leaf weed populations without visible phototoxic symptoms.

Example 4: Specific examples of the composition of the present invention

The thus prepared combination of the present invention was further tested in various ratios for the herbicidal effect during the Kharif season 2016-2017 on rice planting. We tested PR-42 for various rice cultivars at Dineshpur. Crops were planted in a random block design at a relative humidity of 80%, 33.5 ° C, with a plot size of 30 square meters, 10 cm spacing between plants and 30 cm spacing.

The combination of the present invention was calculated and added to the volume of water required for injection (150 liters / acre). The spray tank was filled with half of the required clean water volume, then the inventive combination measured (depending on the volume) was added and the other half of the water was added. The solution was well stirred and sprayed tightly throughout the plant. A Knapsack sprayer equipped with a boom with flat fan nozzles was used to spray the herbicide formulation. The three spray forms are as follows: before germination and after initial germination and after germination. Experiments were performed in random block design 21 times and 3 times.

A study was conducted to evaluate the bio-efficacy and phytotoxicity of novel herbicidal compositions, CCP-228SC (phenoxalam 02% + oxadiazon 28%), on various leaf and light leaf weeds in rice crops.

Table 12 provides details of the formulation of the individual ingredients as well as the treatment of rice crops with conventional formulations already known in the prior art as well as the novel formulation (CCP-228SC) of the present invention.

4 (A): Biological Efficacy Study

Assessment of bio-efficacy : randomly selected from each replicate at 30 DAA (days after treatment) and 60 DAA (days after treatment). The number of viable / living weed species / plant groups was counted from the area.

Weed control: The control percentage of the weed population was calculated according to the formula given in Example 3 based on the number of live weed populations:

The test results obtained after treating rice crops with the herbicide combinations or compositions disclosed in this application are shown in the following table:

DAA - days after spraying, WN  Number of weeds / unit area, %  C-Control percentage

Note:

DAA-days after application,

Leaf injury on L-tip / surface, N-necrosis, V-vein clear disease, E- epinephrine growth, H-posterior growth, W-

CCP-228 SC phenoxalam 02% + oxadiazon 28% SC

result:

Table 13 and Table 14 show efficacy data for sprouting (0-3 days after planting) of combinations of herbicides indicated as CCP-228 SC against lobular weeds and light leaf weeds in a paddy field as another embodiment of the present invention to provide. Surprisingly, it was observed that CCP-228 SC at a concentration of 8.0 + 112.5 gm and 8.0 + 116.25 gm of active ingredient concentration provided a significant reduction (as high as 97%) in both the lobular and light leaf weedy populations.

Table 15 and Table 16 show efficacy data for spraying after initial germination (9-12 days after planting) of a herbicide combination, designated as CCP-228 SC, against lobular weeds and light leaf weeds in rice paddy as another embodiment of the present invention to provide. Surprisingly, it was observed that CCP-228 SC at 8.0 + 112.5 gm and 8.0 + 116.25 gm active ingredient concentrations provided a significant reduction in both the lobular and light leaf weedy populations.

Tables 17 and 18 also show efficacy data for sprouting (18-24 days after planting) of a herbicide combination indicated as CCP-228 SC against lobular weeds and light leaf weeds in rice paddy as another embodiment of the present invention Lt; / RTI > Surprisingly, it was observed that CCP-228 SC at 8.0 + 112.5 gm and 8.0 + 116.25 gm active ingredient concentrations provided a significant reduction in both the lobular and light leaf weedy populations.

4 (B): Evaluation of phytotoxicity:

Visual observations on product testing were recorded on days 3, 7 and 10 (DAA) after application. The observed variables were leaf damage, vein metaplasia, epiphyseal growth, posterior growth and forgery at the end / surface of the leaves. Score grades 1-10 for evaluating leaf impairment symptoms at the end / surface of the leaves are given in Example 3 (b) of Table 10.

result:

As shown in Table 19, treatment with CCP-228 SC for sprouting before germination (0-3 days after planting), after initial germination (9-12 days after planting) and after germination (21-25 days after planting) No phytotoxic symptoms were observed in any plot.

conclusion:

The average data on weed counts were obtained from the Echinochloa colonna lepidopterous weed species during the shortest period in the weed control plot, among the Echinochloa crusgalli, Digitaria species, and the light leaf weeds, , Monochoria spp., And alterantanicillisil. ≪ / RTI >

In the bio-efficacy studies performed with the herbicide compositions of the present invention, designated as CCP 228SC, the plots treated with 8.0+ 112.5 gm and 8.0 + 116.25 gm active ingredient concentration doses showed no difference in pre-germination, post- Significantly reduced both the lobular and broad leaf weed populations without visible phytotoxic symptoms.

Claims (17)

Synergistic herbicidal combination comprising:
a) at least one active ingredient belonging to the triazolopyrimidine group
b) at least one active ingredient belonging to the oxadiazole group, wherein the weight ratio of the components (a) to (b) is in the range from 1: 1 to 1:30. [Claim 3] The composition according to claim 1, wherein the active ingredient belonging to the triazolopyrimidine group is selected from the group consisting of phenoxhlam, chloramblum, diclopram, florulam, flumemullah, methosulfam, Synergistic herbicide combinations. The synergistic herbicidal combination according to claim 1, wherein the active ingredient belonging to the oxadiazole herbicide group is selected from the group comprising oxadiaryl and oxadiazone. A synergistic herbicidal composition comprising:
a) at least one active ingredient belonging to the triazolopyrimidine group;
b) at least one active ingredient belonging to the oxadiazole group;
c) one or more agriculturally acceptable excipients. [Claim 4] The composition according to claim 4, wherein the active ingredient belonging to the triazolopyrimidine group is selected from the group consisting of phenoxhlam, chloramblum, diclosulam, floramullum, flumemilam, methosulfam and pyoxysulam A synergistic herbicide composition. The synergistic herbicidal composition according to claim 4, wherein said active ingredient belonging to the triazolopyrimidine group is present in an amount ranging from 1-24% w / w of the composition. The synergistic herbicidal composition according to claim 4, wherein the active ingredient belonging to the oxadiazole herbicide group is selected from the group comprising oxadiaryl and oxadiazone. The synergistic herbicidal composition according to claim 4, wherein the active ingredient belonging to the oxadiazole group is present in an amount ranging from 1-28% w / w of the composition. The synergistic herbicidal composition according to claim 4, wherein the agriculturally acceptable excipient is selected from the group comprising cryoprotectants, dispersants or wetting agents, defoamers, biocides, and thickeners. The cryoprotectant according to claim 4 or 5, wherein the cryoprotectant is selected from the group consisting of monoethylene glycol, diethylene glycol; Lt; RTI ID = 0.0 > polypropylene < / RTI > glycol. The wetting or dispersing agent of claims 4 and 9, wherein the wetting agent or dispersing agent is selected from the group consisting of an amine salt of ethoxylated phosphate tristyryl phenol, a derivative of alkylaryl ethoxy ethanol, an amine salt of polyaryl ether phosphate or a mixture thereof and a non-ionic surfactant ≪ / RTI > wherein said herbicidal composition is selected from the group comprising < RTI ID = 0.0 > The synergistic herbicidal composition according to claims 4 and 9, wherein the defoamer is selected from the group comprising polydimethylsiloxane emulsion, silicone, stearate defoamer, alcohol defoamer, glycol defoamer, insoluble oil defoamer. The synergistic herbicidal composition according to claims 4 and 9, wherein the biocide is selected from formaldehyde, glutaraldehyde, peracetic acid, phenol. The synergistic herbicidal composition according to claims 4 and 9, wherein the thickening agent is selected from the group consisting of polyacrylamides, polyethylene polymers, polysaccharides such as xanthan gum, vegetable oils. The composition according to any one of the preceding claims, wherein the composition is selected from the group consisting of a liquid wettable powder (SC), an emulsion (EC), a wetting agent (WP), a liquid agent (SL), a water-soluble agent (SP), a capsule suspension agent Characterized in that it is formulated in a form selected from the group consisting of granules (WG), micro-emulsions (ME), suspended granules and emollients (SE). A process for preparing a composition of the invention, comprising the steps of:
i. Dissolving a dispersant and a wetting agent in water to obtain a mixture;
ii. Adding a cryoprotectant to the mixture of step (i);
iii. Adding the active ingredient and the oxadiazole from the triazolopyrimidine group to the mixture of step (ii);
iv. Adding a deformer to the mixture of step (iii) to obtain a homogenous mass;
v. Reducing the uniform material size of step (iv) to achieve a particle size distribution in the range of 1-10 microns;
vi. Adding a 2% xanthan gum aqueous solution to the product of step (v) under mixing to obtain a liquid wettable powder formulation of the present invention. A method for controlling undesirable plants in paddy fields, comprising spraying an effective herbicidally effective amount of the synergistic herbicidal composition of any one of claims 4-12.

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