A herbicidal combination for gramineous crops against fenclorim phytotoxicity

Abstract

The present application provides a kind of herbicide composition for anti-benzoxyacetone phenoxy acid double oxygenase inhibitor and the herbicide safener containing quinoline structure;The herbicide composition prepared by the present application can reduce the phytotoxicity of herbicide to gramineous crops such as wheat, rice and millet without affecting the efficacy of herbicide;For three different gramineous crops such as wheat, rice and millet, the composition of the present application is significantly better than the composition for reducing the phytotoxicity of herbicide to rice and millet in reducing the phytotoxicity of herbicide to wheat.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of herbicide safeners, in particular to a herbicide composition for preventing benzofluor phytotoxicity of gramineous crops. BACKGROUND

[0002] Due to the unreasonable use of herbicides and the selectivity of weeds, more and more weeds show high resistance, and it is very difficult to control them. One of the conventional solutions is to increase the amount of herbicides and diversify the compound mixture, but this will further increase the resistance of weeds, and on the other hand, it will cause the crops to be prone to phytotoxicity. The causes of herbicide phytotoxicity are particularly complex, mainly including improper selection of herbicides, failure to apply herbicides according to the correct use method and dosage standard, unreasonable scheduling of herbicide application, incorrect herbicide application method, and uneven spraying of herbicides.

[0003] The emergence of herbicide safeners has very good solved the occurrence of phytotoxicity. Herbicide safeners (safener) are also called antidote or protectant. Simply put, it is a compound used to protect crops from herbicide phytotoxicity, thereby increasing the safety of crops and improving the effect of weed control. It protects crops by accelerating metabolism, increasing enzyme activity and up-regulating related genes. Adding safeners to herbicides is a means to artificially impart selectivity to herbicides to improve crop tolerance, and its role also includes selective herbicide synergists to expand the herbicidal spectrum of herbicides without increasing phytotoxicity to crops. More than 30 herbicide safener varieties and their commercial compositions with herbicides have been put into production and application to protect gramineous crops such as rice, wheat, corn, sorghum and broadleaf crops such as soybeans and cotton.

[0004] In view of the different growth stages of different crops, the types of weeds at special growth stages and the sensitivity of plants to different herbicides, the existing herbicides and safeners are screened to obtain the optimal combination mode and relative ratio, so as to be applied to specific crops, which is a technical problem to be solved in the field of herbicides. SUMMARY

[0005] Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD) is one of the most important herbicide targets at present. HPPD inhibitor herbicides inhibit the activity of HPPD, block the conversion of hydroxyphenylpyruvic acid to urocanic acid, and thus affect the synthesis of plastid quinone and tocopherol in plants, leading to the occurrence of albinism in plants and death. This type of herbicide has the advantages of high efficiency, low toxicity, wide herbicidal spectrum and slow resistance development.

[0006] The present application aims at the deficiency in the prior art, and provides a herbicidal composition for gramineous crops, which can be used for controlling weeds of gramineous crops; the herbicidal composition comprises a para-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor and a safener having a structure as shown in formula (1):

[0007] wherein R is selected from one of hydrogen, C1-C8 alkyl, C1-C8 alkoxy, hydroxyl, halogen, nitro, phenyl.

[0008] Further, the present application provides the herbicidal composition for gramineous crops as described above, and the selected grain is preferably one or more of wheat, rice or millet; more preferably, the grain is wheat.

[0009] Further, the present application provides the herbicidal composition for gramineous crops as described above, and R is selected from one of C2-C7 alkyl, nitro, phenyl; preferably, R is selected from n-pentyl.

[0010] Further, the present application provides the herbicidal composition for gramineous crops as described above, and R is selected from n-pentyl.

[0011] Further, the present application provides the herbicidal composition for gramineous crops as described above, and the mass ratio of the active ingredient of the safener to the active ingredient of the herbicide is 1:(0.7-70.0), preferably 1:(2-60.0), more preferably 1:(5-40.0), and most preferably 1:10 or 1:30.

[0012] Further, the present application provides the herbicidal composition for gramineous crops as described above, and the para-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor is selected from at least one of isoxaflutole, carfentrazone-ethyl, thiencarbazone-methyl, and tembotrione, and is preferably carfentrazone-ethyl.

[0013] Further, the present application provides the herbicidal composition for gramineous crops as described above, and the herbicide composition further comprises other herbicides, and preferably the other herbicides are selected from one or more of fluroxypyr, sodium 2-methyl-4-chlorophenoxy-2-propenoate, carfentrazone-ethyl, florasulam, and isopropyl.

[0014] Further, the present application provides the herbicidal composition for gramineous crops as described above, and the herbicide composition is compounded with fluroxypyr for post-emergence control of annual broadleaf weeds of Malvaceae, Gnaphalium affine, Veronica longifolia, and Euphorbia humifusa in wheat fields, and the ratio of the para-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor to fluroxypyr is 1:(0.5-50), preferably 1:(1-40), more preferably 1:(3-20), and most preferably 1:5.

[0015] Further, the present application provides a herbicidal composition for use in gramineous crops as described above, said herbicide composition is complexed with sodium 2-methyl-4-chlorophenoxyacetic acid, for post-emergence control of annual broadleaf weeds, Galium aparine, Descurania sophia, Veronica agrestis, Kochia scoparia, in wheat field, the mass ratio of HPPD inhibitor to sodium 2-methyl-4-chlorophenoxyacetic acid is 1:(1-100), preferably 1:(5-80), more preferably 1:(10-40), most preferably 1:30.

[0016] Further, the present application provides a herbicidal composition for use in gramineous crops as described above, said herbicide composition is complexed with carfentrazone-ethyl, for post-emergence control of annual broadleaf weeds, Galium aparine, Descurania sophia, Veronica agrestis, Kochia scoparia, in wheat field, the mass ratio of HPPD inhibitor to carfentrazone-ethyl is 1:(0.1-10), preferably 1:(0.2-5), more preferably 1:(0.8-2), most preferably 1:1.

[0017] Further, the present application provides a herbicidal composition for use in gramineous crops as described above, said herbicide composition is complexed with florasulam, for post-emergence control of annual broadleaf weeds, Galium aparine, Descurania sophia, Veronica agrestis, Kochia scoparia, in wheat field, the mass ratio of HPPD inhibitor to florasulam is 1:(0.01-1), preferably 1:(0.02-0.5), more preferably 1:(0.05-0.2), most preferably 1:0.1.

[0018] Further, the present application provides a herbicidal composition for use in gramineous crops as described above, said herbicide composition is complexed with isoproturon, for post-emergence control of annual broadleaf weeds, Alopecurus myosuroides, A. japonicus, Bromus commutatus, in wheat field, the mass ratio of HPPD inhibitor to isoproturon is 1:(2-200), preferably 1:(10-100), more preferably 1:(5-50), most preferably 1:7.33.

[0019] Further, the present application provides the use of the herbicidal composition as described above in controlling weeds in gramineous crops, preferably said gramineous crops are selected from one or more of wheat, rice or millet, more preferably wheat.

[0020] The composition of the present application preferably further comprises an agriculturally acceptable carrier. The composition of the present application can be formulated as granules, wettable granules, emulsifiable concentrates, powders or dusts, liquids, solutions, suspensions or emulsions, or controlled release forms such as microcapsules.

[0021] Wettable powders are finely divided particles of the active ingredient retained in a solid matrix. Typical solid matrices include fuller's earth, kaolin, silicas, and other readily wettable organic or inorganic solids. Wettable powders generally contain about 5% to about 95% active ingredient plus a small amount of wetting agent, dispersing agent or emulsifying agent.

[0022] Emulsifiable concentrates are uniform liquid compositions which can be dispersed in water or other liquid carriers to form emulsions of agronomically useful particle size. They are composed of an active ingredient plus a liquid or solid emulsifying agent. They can also contain wetting agents, dispersing agents, or other additives to improve their performance. The amount of active ingredient can range from about 0.5% to about 95% of the concentrate.

[0023] Granules include extrusions and larger particles which are usually applied without dilution to areas where plant growth is desired to be inhibited. Typical carriers for granules include sand, ground rock, perlite, vermiculite, attapulgite, kieselguhr, and other organic or inorganic substances which can absorb or be coated with the active ingredient. Granules generally contain about 5% to about 95% active ingredient and can contain surfactants such as heavy aromatic petroleum oil, kerosene, and other petroleum fractions or vegetable oils; and / or binders such as dextrin, gum, or synthetic resins.

[0024] Dusts are free-flowing powders of the active ingredient mixed with finely divided solid such as talc, clay, flour, and other organic and inorganic solids which act as dispersing agents and carriers.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] 1. The herbicide safener containing the quinoline structure cloquintocet-mexyl is used for the HPPD herbicide tobramone phytotoxicity of the gramineous crops, which can reduce the harm of the herbicide to the crops without affecting the herbicidal effect. The combination of cloquintocet-mexyl and tobramone is used for the weeding of the gramineous crops such as wheat, rice and millet, which has excellent weeding ability and can protect the crops from phytotoxicity.

[0027] 2. The herbicide combination of the herbicide safener containing the quinoline structure and the HPPD herbicide tobramone is feasible, and the phytotoxicity relief effect of the herbicide combination on wheat is far better than that on rice and millet on the basis of safety to wheat, rice and millet, which shows that the herbicide combination of the present application has achieved unexpected technical effects in the field of wheat weeding.

[0028] Drawings of the specification

[0029] Figure 1 Safety test of different concentrations of tobramone on wheat;

[0030] Figure 2 The feasibility verification of the herbicide combination agent of the herbicide safener containing quinoline structure, flumiclorac-pentyl, and the HPPD type herbicide, benzobacotron;

[0031] Figures 3-4 The efficacy test verification of the herbicide combination of the herbicide safener containing quinoline structure, flumiclorac-pentyl, and the HPPD type herbicide, benzobacotron, and different treatment groups on Arabidopsis thaliana;

[0032] Figures 5-6 The efficacy test verification of the herbicide combination of the herbicide safener containing quinoline structure, flumiclorac-pentyl, and the HPPD type herbicide, benzobacotron, and different treatment groups on Arabidopsis thaliana;

[0033] Figure 7 The single plant details comparison of different mixed treatment (1. blank control 2. benzobacotron + flumiclorac-pentyl 3. benzobacotron single agent 4. benzobacotron + flumetsulam 5. benzobacotron + flumiclorac-pentyl 6. benzobacotron + 2 methyl 4 chloro sodium);

[0034] Figures 8-9 The efficacy test verification of the herbicide combination of the herbicide safener containing quinoline structure, flumiclorac-pentyl, and the HPPD type herbicide, benzobacotron, and different treatment groups on Arabidopsis thaliana; DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0036] In addition to the raw drug, active ingredient and / or safener described above, the product used in the embodiments of the present application also contains 85% flumiclorac-pentyl sodium EP, 20% flumiclorac-pentyl AS, 5% flumetsulam SC, 10% benzobacotron EP, 5.5% benzobacotron SC + 16.5% flumiclorac-pentyl SC, 22% isopropylone EP and 6% cyclopyriflucetone OD.

[0037] Part of the formulation information of the present application is as follows:

[0038] 30% benzobacotron SC: benzobacotron raw drug 30%, fatty alcohol polyoxyethylene ether phosphate 3%, triphenyl ethenyl phenol polyoxyethylene ether 3%, nonylphenol polyoxyethylene ether 1%, magnesium aluminum silicate 1.5%, xanthan gum 0.1%, sodium sulfite 0.3%, ethylene glycol 5%, kason 0.1%, silicone defoaming agent 0.3%, and water supplementing to 100%.

[0039] 20% flumiclorac-pentyl AS: flumiclorac-pentyl 20%, fatty alcohol polyoxyethylene ether 5%, ethylene glycol 5%, silicone defoaming agent 0.2%, and water supplementing to 100%.

[0040] 5% florasulam SC: florasulam 5%, fatty alcohol polyoxyethylene ether phosphate ester 3%, calcium dodecylbenzenesulfonate 2%, magnesium aluminum silicate 2.5%, xanthan gum 0.2%, ethylene glycol 5%, kathon 0.1%, silicone antifoaming agent 0.3%, water to 100%.

[0041] 10% carfentrazone-ethyl EP: carfentrazone-ethyl 10%, silicone 2%, white carbon black 20%, calcium lignosulfonate 10%, sodium maleic-acrylic acid 2%, sodium gluconate to 100%.

[0042] 85% sodium methyldithiocarbamate SP: sodium methyldithiocarbamate 85%, naphthalene sulfonate formaldehyde condensate 8%, sodium dodecylbenzenesulfonate 2%, white carbon black to 100%.

[0043] 22% isopropylammonium EP: isopropylammonium 22%, methyl acrylate-methacrylic acid copolymer 8%, fatty alcohol polyoxyethylene ether 3%, white carbon black 10%, sodium lignosulfonate 10%, ammonium sulfate to 100%.

[0044] The preparation products not mentioned here are adjusted according to the content of the specific active ingredient when the active ingredient and the type of preparation are the same but the content is different, and other adjuvants are adjusted adaptively; other preparation products not mentioned are commercially available products, which are used and experimented after being diluted with water according to the amount.

[0045] The following examples are merely descriptive, not limiting, and cannot limit the protection scope of the present application. The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as implicitly split by the endpoint. The ranges or values should be understood as being inclusive of values approximately within these ranges or values. For numerical ranges, the endpoints of each range are combined with the endpoints of the other ranges to form new ranges having endpoints that are implicitly split into the individual endpoints of the ranges. These new ranges are to be considered disclosed herein.

[0046] Example 1 HPPD herbicide carfentrazone-ethyl on indoor wheat safety test and different herbicide safeners on indoor wheat resistance to HPPD herbicide carfentrazone-ethyl phytotoxicity mitigation effect

[0047] In order to study the safety of HPPD herbicide carfentrazone-ethyl on wheat and the mitigation of phytotoxicity by different safeners, 800 pots of wheat were planted in the greenhouse of Shandong Jingbo Agrochemical Technology Co., Ltd. Pang Jiaosheng test base, each pot of wheat was sowed not less than 50 seeds, and the 800 pots of wheat were managed consistently. 495 pots of wheat with similar growth vigor were selected as test objects; for the study of HPPD herbicide carfentrazone-ethyl on indoor wheat safety test and different herbicide safeners on indoor wheat resistance to HPPD herbicide carfentrazone-ethyl phytotoxicity mitigation effect.

[0048] I. The safety test of HPPD herbicide tosylaufuron on wheat in laboratory:

[0049] In order to study the safety of HPPD herbicide tosylaufuron on wheat in laboratory, tosylaufuron was diluted twice, and the treatment area was selected. The sample was added to water, diluted and mixed, then introduced into the sprayer. The water was supplemented according to the amount of active ingredient, which was 9.00 g / ha, 13.50 g / ha, 18.00 g / ha, 22.50 g / ha, 27.00 g / ha, 31.50 g / ha, 36.00 g / ha, 54.00 g / ha, and 81.00 g / ha. 120 pots of wheat selected as test objects were divided into 8 groups (treatment 1-8), 5 pots per group, and repeated three times. The potted wheat was sprayed by stem and leaf spraying during the growth period. The test results were investigated on the 14th day, and the inhibition rate of fresh weight / plant height content of each treatment was calculated according to the formula. The calculation result was kept to two decimal places. The results are shown in Table 1, Figure 1 .

[0050]

[0051] In the formula:

[0052] R - growth inhibition rate, unit: percentage (%);

[0053] X0 - control fresh weight (or plant height), unit: grams or centimeters (g or cm);

[0054] X1 - treatment fresh weight (or plant height), unit: grams or centimeters (g or cm).

[0055] Table 1 Safety test of different concentrations of tosylaufuron on wheat

[0056]

[0057] The results show that the use of HPPD herbicide tosylaufuron on wheat at an active ingredient of 18 g / ha and above will cause phytotoxicity to wheat, affecting the plant height growth rate and fresh weight inhibition rate of wheat.

[0058] II. Study on the effect of different herbicide safeners on the alleviation of HPPD herbicide tosylaufuron phytotoxicity to wheat in laboratory:

[0059] To investigate the effects of different herbicide safeners on mitigating phytotoxicity of the HPPD herbicide benzoxazole in indoor wheat cultivation, benzoxazole was diluted using a two-stage method. For each treatment area, the herbicide sample was diluted with water and mixed thoroughly before being introduced into a sprayer. Water was added according to the water usage of each plot to prepare effective ingredient dosages of 18.00 g / ha, 27.00 g / ha, 36.00 g / ha, 54.00 g / ha, and 81.00 g / ha. A safener was added during the preparation process, with a mass ratio of the safener active ingredient to the herbicide active ingredient of 1:10. 375 potted wheat plants selected as the experimental subjects were divided into 25 groups (treatments 9-33), with 5 pots in each group, and the treatment was repeated three times. During the wheat's growth period, the potted wheat was sprayed via foliar spraying. The statistical methods for the results are described in Example 1, and the results are shown in Table 2.

[0060] Table 2 Comparative Experiment of Different Herbicide Safeguards on the Herbicide Damage Relief Effect of Benzoflubenzuron on Indoor Wheat (HPPD-Resistant Herbicide)

[0061]

[0062]

[0063] The results showed that different safeners had significantly different effects on alleviating herbicide damage to wheat. Among them, the herbicide safener containing quinoline structure, chlorpyrifos, had the greatest protective effect. When the mass ratio of the active ingredient of the herbicide safener to the active ingredient of the herbicide was 1:10, there was no significant difference in the indicators between wheat and the control group.

[0064] Example 2: Study on the phytotoxicity of different concentrations of quinoline-containing herbicide safener oxychloride to HPPD-resistant wheat in indoor environments:

[0065] To investigate the effects of different concentrations of the quinoline-containing herbicide safener, methylparaben, on the phytotoxicity of HPPD-type herbicide benzoyl permethrin in indoor wheat cultivation, benzoyl permethrin was diluted using a two-stage method. The herbicide was selected for each treatment area, and the sample was diluted with water and mixed thoroughly before being injected into a sprayer. Water was replenished according to the plot's water usage to prepare effective ingredient dosages of 18.00 g / ha, 27.00 g / ha, and 36.00 g / ha. The mass ratio of the active ingredient in the herbicide safener to the active ingredient in the herbicide was set at three levels: 1:10, 1:20, and 1:30, respectively. Two hundred pots of wheat were planted in a greenhouse, with at least 50 seeds sown in each pot. During the wheat's growth period, 180 pots of wheat with similar growth were selected and divided into 12 groups of 5 pots each, with three replicates. The potted wheat was sprayed via foliar spraying. The results were collected on day 14, and the inhibition rate of the herbicide content (fresh weight / plant height) for each treatment was calculated using the formula. The results were rounded to two decimal places. The statistical methods for the results are described in Example 1, and the experimental results are shown in Table 3.

[0066] Table 3 Comparison of different concentrations of benoxacor to alleviate wheat phytotoxicity

[0067]

[0068] The results show that: low, medium and high concentrations of quinoline structure-containing herbicide safener benoxacor can protect wheat to some extent, and when the concentration of carfentrazone-ethyl is low, there is no significant difference in the phytotoxicity alleviating effect of the three concentrations of benoxacor. When mixed with low concentration carfentrazone-ethyl (active ingredient less than 27 g / ha), the optimal ratio of benoxacor to carfentrazone-ethyl active ingredient is 1:30; if mixed with high concentration carfentrazone-ethyl (active ingredient more than 27 g / ha), the optimal ratio of benoxacor to carfentrazone-ethyl active ingredient is 1:10

[0069] Example 3: Study on the effect of quinoline structure-containing herbicide safener benoxacor on wheat resistance to HPPD herbicide carfentrazone-ethyl phytotoxicity in wheat fields in major wheat-producing areas

[0070] In order to study the effect of quinoline structure-containing herbicide safener benoxacor on wheat resistance to HPPD herbicide carfentrazone-ethyl phytotoxicity in major wheat-producing areas, carfentrazone-ethyl was diluted twice to select the treatment area pesticide, the sample was added to water, diluted and mixed, then introduced into the sprayer, and the water was supplemented according to the area water consumption, and the active ingredient was configured to 18.00 g / ha and 27.00 g / ha. The mass ratio of herbicide safener active ingredient to herbicide active ingredient was 1:30, and the test was carried out in Fugou County, Henan Province, Taihe County, Anhui Province, Lianshui County, Jiangsu Province, and Tancheng County, Shandong Province. Each treatment was 20 square meters, and each treatment was repeated 3 times. During the growth period of wheat, the wheat was sprayed by stem and leaf spraying. The test results were investigated on the 14th day, and the inhibition rate of fresh weight / plant height content of each treatment was calculated according to the formula. The calculation result is kept to two decimal places. The statistical method of the results is shown in Example 1, and the test results are shown in Table 4.

[0071] Table 4 Comparison of different concentrations of benoxacor to alleviate wheat phytotoxicity in different areas

[0072]

[0073] The results show that: in the test in major wheat-producing areas in China, it is found that quinoline structure-containing herbicide safener benoxacor has a significant protective effect on wheat.

[0074] Example 4: Study on the effect of a quinoline structure-containing herbicide safener benoxacor and HPPD herbicide carfentrazone-ethyl combined herbicide combination on wheat field weeds in major wheat-producing areas

[0075] To study whether the addition of cloquintocet-mexyl will affect the efficacy of carfentrazone-ethyl, carfentrazone-ethyl was diluted twice, the treatment area was selected, the sample was added to water, diluted and mixed uniformly, then introduced into the sprayer, and the water consumption of the plot was supplemented to prepare a preparation with an active ingredient content of 27.00 g / ha. The mass ratio of the active ingredient of the herbicide safener to the active ingredient of the herbicide was 1:30, and the test was carried out in Taihe County, Anhui Province, with 20 square meters for each treatment and 3 repetitions for each treatment. During the growth period of wheat, the seeds of Descurainia sophia, Veronica longifolia, Brassica campestris and Euphorbia humifusa were sprayed by stem and leaf spraying. The test results were investigated on the 14th day, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results are kept to two decimal places. The result statistical method is shown in Example 1, and the test results are shown in Table 5.

[0076] Table 5 Feasibility verification of a herbicide safener containing a quinoline structure, cloquintocet-mexyl, and a HPPD herbicide, carfentrazone-ethyl, combined herbicide combination agent

[0077]

[0078] The results show that when the herbicide safener containing a quinoline structure is added, the efficacy of the HPPD herbicide carfentrazone-ethyl on the main weeds Descurainia sophia, Veronica longifolia, Brassica campestris and Euphorbia humifusa in wheat field is not significantly affected. Therefore, the herbicide safener containing a quinoline structure, cloquintocet-mexyl, and the HPPD herbicide carfentrazone-ethyl combined herbicide combination agent is feasible.

[0079] Example 5: Efficacy test results of a herbicide safener containing a quinoline structure, cloquintocet-mexyl, a HPPD herbicide, carfentrazone-ethyl, and fluroxypyr on annual broadleaf weeds.

[0080] To study the efficacy test results of the combination agent on annual broadleaf weeds, the treatment area was selected, the sample was added to water, diluted and mixed uniformly, then introduced into the sprayer, and the water consumption of the plot was supplemented to prepare a preparation with an active ingredient content of 27.00 g / ha. The mass ratio of the active ingredient of cloquintocet-mexyl to carfentrazone-ethyl was 1:30, and the mass ratio of carfentrazone-ethyl to fluroxypyr was 1:5. The test was carried out in Taihe County, Anhui Province, with 20 square meters for each treatment and 3 repetitions for each treatment. During the growth period of wheat, Descurainia sophia, Veronica longifolia, Brassica campestris and Euphorbia humifusa were sprayed by stem and leaf spraying. The test results were investigated on the 14th day, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results are kept to two decimal places. The result statistical method is shown in Example 1, and the test results are shown in Table 6.

[0081] Table 6 Efficacy test results of a herbicide safener containing a quinoline structure, cloquintocet-mexyl, a HPPD herbicide, carfentrazone-ethyl, and fluroxypyr on different broadleaf weeds in wheat field

[0082]

[0083] The results show that the herbicide safener containing quinoline structure dichlorole, HPPD herbicide benzobacotron and sodium 2-methyl-4-chloro compound combination agent, compared with benzobacotron single agent and sodium 2-methyl-4-chloro single agent, the plant control efficiency and fresh weight inhibition rate on spilanthes acmella, galium aparine and pig yin yin are significantly improved.

[0084] Example 6: The herbicide safener containing quinoline structure dichlorole, HPPD herbicide benzobacotron and sodium 2-methyl-4-chloro compound combination agent on annual broad-leaved weed efficacy test results

[0085] In order to study the herbicide safener containing quinoline structure dichlorole, HPPD herbicide benzobacotron and sodium 2-methyl-4-chloro compound combination agent on annual broad-leaved weed efficacy test results, the sample was added to water, diluted and mixed uniformly, introduced into the sprayer, supplemented with water according to the amount of water per unit area, and configured into an active ingredient of 27.00g / ha. The mass ratio of dichlorole and benzobacotron active ingredient was 1:30, and the mass ratio of benzobacotron and sodium 2-methyl-4-chloro was 1:30. The test was carried out in Taihe County, Anhui Province. Each treatment was 20 square meters, and each treatment was repeated 3 times. In the wheat growth period, spilanthes acmella, veronica longifolia and galium aparine were sprayed by stem and leaf spraying. The test results were investigated on the 14th day, and the plant control efficiency and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results are kept to two decimal places. The statistical method is shown in example 1, and the test results are shown in table 7.

[0086] Table 7: The herbicide safener containing quinoline structure dichlorole, HPPD herbicide benzobacotron and sodium 2-methyl-4-chloro compound combination agent on different broad-leaved weed efficacy test results in wheat field

[0087]

[0088] The results show that the herbicide safener containing quinoline structure dichlorole, HPPD herbicide benzobacotron and sodium 2-methyl-4-chloro compound combination agent, compared with benzobacotron single agent and sodium 2-methyl-4-chloro single agent, the plant control efficiency and fresh weight inhibition rate on spilanthes acmella, galium aparine and pig yin yin are significantly improved.

[0089] Example 7: The herbicide safener containing quinoline structure dichlorole, HPPD herbicide benzobacotron and sodium 2-methyl-4-chloro compound combination agent on annual broad-leaved weed efficacy test results

[0090] In order to study the effect of the combination agent on annual broad-leaved weeds, the sample was added to water, diluted and mixed uniformly, then introduced into a sprayer, and supplemented with water according to the water consumption of the plot, and configured into an active ingredient dosage of 27.00 g / ha. The mass ratio of benoxacor to the active ingredient of pyroxasulfone was 1:30, and the mass ratio of pyroxasulfone to carfentrazone-ethyl was 1:1. The test was carried out in Taihe County, Anhui Province, with 20 square meters for each treatment and 3 repetitions for each treatment. During the growth period of wheat, the seeds of Descurainia sophia, Veronica longifolia and Brassica rapa were sprayed by foliar spraying. The test results were investigated on the 14th day, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results were rounded to two decimal places. The result statistical method is shown in Example 1, and the test results are shown in Table 8.

[0091] Table 8 Effect of a combination agent containing a quinoline structure herbicide safener benoxacor, HPPD herbicide pyroxasulfone and carfentrazone-ethyl on different broad-leaved weeds in wheat field

[0092]

[0093] The results show that carfentrazone-ethyl is prone to phytotoxicity under unreasonable use, but its efficacy is strong. After mixing with pyroxasulfone, the combination agent has excellent control effect on common broad-leaved weeds in wheat field. A combination agent containing a quinoline structure herbicide safener benoxacor, HPPD herbicide pyroxasulfone and carfentrazone-ethyl can be used to control high-resistance broad-leaved weeds in wheat field.

[0094] Example 8: Effect of a combination agent containing a quinoline structure herbicide safener benoxacor, HPPD herbicide pyroxasulfone and florasulam on annual broad-leaved weeds

[0095] In order to study the effect of the combination agent on annual broad-leaved weeds, the sample was added to water, diluted and mixed uniformly, then introduced into a sprayer, and supplemented with water according to the water consumption of the plot, and configured into an active ingredient dosage of 27.00 g / ha. The mass ratio of benoxacor to the active ingredient of pyroxasulfone was 1:10, and the mass ratio of pyroxasulfone to florasulam was 1:0.1. The test was carried out in Taihe County, Anhui Province, with 20 square meters for each treatment and 3 repetitions for each treatment. During the growth period of wheat, the seeds of Descurainia sophia, Veronica longifolia and Brassica rapa were sprayed by foliar spraying. The test results were investigated on the 14th day, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results were rounded to two decimal places. The result statistical method is shown in Example 1, and the test results are shown in Table 9.

[0096] Table 9 Effect of a combination agent containing a quinoline structure herbicide safener benoxacor, HPPD herbicide pyroxasulfone and florasulam on different broad-leaved weeds in wheat field

[0097]

[0098]

[0099] The results show that the herbicide safener containing quinoline structure dichlorflurenol, HPPD herbicide tolfenpyrad and florasulam complex combination agent, compared with tolfenpyrad single agent and florasulam single agent, the plant control effect and fresh weight inhibition rate on the veronica longifolia and the pig are significantly improved.

[0100] Example 9: The herbicide safener containing quinoline structure dichlorflurenol, HPPD herbicide tolfenpyrad and isopropyl complex combination agent on the brome efficacy test results.

[0101] In order to study the effect of the combination agent on annual grass weeds, the treatment area was selected, the sample was added to water, diluted and mixed uniformly, introduced into the sprayer, supplemented with water according to the area water consumption, and configured into the active ingredient dosage of 27.00g / ha. The mass ratio of dichlorflurenol and tolfenpyrad active ingredient is 1:30, and the mass ratio of tolfenpyrad and isopropyl is 1:27.5. The test was carried out in Tancheng County, Shandong Province, 20 square meters for each treatment, and each treatment was repeated 3 times. In the growth period of wheat, brome was sprayed by stem and leaf spraying. The test results were investigated on the 14th day, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation result is kept to two decimal places. The statistical method of the results is shown in example 1, and the test results are shown in table 10.

[0102] Table 10 The herbicide safener containing quinoline structure dichlorflurenol, HPPD herbicide tolfenpyrad and isopropyl on the large brome efficacy test results

[0103]

[0104] The results show that the herbicide safener containing quinoline structure dichlorflurenol, HPPD herbicide tolfenpyrad and isopropyl complex combination agent has a certain effect on the control effect of large brome, and the efficacy of tolfenpyrad is not weaker than that of the same active ingredient dosage of cyclopyriflucarban.

[0105] Example 10: The herbicide safener containing quinoline structure dichlorflurenol, HPPD herbicide tolfenpyrad and isopropyl complex combination agent on the Japanese horsetail efficacy test results.

[0106] To study the effect of the combination on annual grass weeds, the sample was added to water, diluted and mixed, then introduced into a sprayer, and made up to the required amount of water for the plot, to give an active ingredient concentration of 27.00 g / ha. The mass ratio of benoxacor to active ingredient of topramezone was 1:30, and the mass ratio of topramezone to isoproturon was 1:27.5. The test was carried out in Lianshui County, Jiangsu Province, with 20 m2 per treatment and 3 replicates per treatment. The Alopecurus japonicus was sprayed by foliar spraying during the growth period of the wheat. The test results were investigated on day 14, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results were rounded to two decimal places. The result statistical method is shown in Example 1, and the test results are shown in Table 11.

[0107] Table 11 Effect of a herbicide safener containing a quinoline structure, HPPD herbicide topramezone and isoproturon on Alopecurus japonicus

[0108]

[0109] Example 11: Effect of a herbicide safener containing a quinoline structure, HPPD herbicide topramezone and isoproturon on Alopecurus japonicus.

[0110] To study the effect of the combination on annual broadleaf weeds, the sample was added to water, diluted and mixed, then introduced into a sprayer, and made up to the required amount of water for the plot, to give an active ingredient concentration of 27.00 g / ha. The mass ratio of benoxacor to active ingredient of topramezone was 1:10, and the mass ratio of topramezone to isoproturon was 1:18.33, 1:9.17 and 1:7.33. The test was carried out in Boshan County, Shandong Province, with 20 m2 per treatment and 3 replicates per treatment. The Alopecurus japonicus was sprayed by foliar spraying during the growth period of the wheat. The test results were investigated on day 14, and the plant control effect and fresh weight inhibition rate of each treatment were calculated according to the formula. The calculation results were rounded to two decimal places. The result statistical method is shown in Example 1, and the test results are shown in Table 12.

[0111] Table 12 Effect of a herbicide safener containing a quinoline structure, HPPD herbicide topramezone and isoproturon on Alopecurus japonicus.

[0112]

[0113] The results show that the herbicide safener containing a quinoline structure, HPPD herbicide topramezone and isoproturon have a certain effect on the control of Alopecurus japonicus. Topramezone is more active than the ring fluazifop, and the single use and the combination have good control effect on Alopecurus japonicus, which proves the feasibility of topramezone for grass weeds in wheat fields.

[0114] Example 12: Effect of different concentrations of herbicide safener benoxacor containing quinoline structure on indoor rice phytotoxicity of HPPD-type herbicide benzobacotron:

[0115] In order to study the effect of different concentrations of herbicide safener benoxacor containing quinoline structure on indoor rice phytotoxicity of HPPD-type herbicide benzobacotron, benzobacotron was diluted twice to select the treatment area. The sample was added to water, diluted and mixed, then introduced into the sprayer, and the water was supplemented according to the area, and the active ingredient was configured to 18.00 g / ha, 27.00 g / ha, and 36.00 g / ha. The mass ratio of herbicide safener active ingredient to herbicide active ingredient was 3 low, medium and high levels, respectively, 1:10, 1:20 and 1:30. 200 rice pots were planted in the greenhouse, each pot of rice was sown with not less than 50 seeds, divided into 12 groups, 5 pots each, repeated three times. During the growth period of rice, the potted sorghum was sprayed by stem and leaf spraying. On the 14th day, the test results were investigated, and the inhibition rate of fresh weight / plant height content of each treatment was calculated according to the formula. The calculation result is kept to two decimal places. The statistical method is shown in Example 1, and the test results are shown in Table 13.

[0116] Table 13 Comparison of different concentrations of benoxacor for relieving rice phytotoxicity

[0117]

[0118]

[0119] The results show that low, medium and high concentrations of herbicide safener benoxacor containing quinoline structure have certain relief effect on benzobacotron phytotoxicity of rice, but the phytotoxicity relief effect is general.

[0120] Example 13: Effect of different concentrations of herbicide safener benoxacor containing quinoline structure on indoor millet phytotoxicity of HPPD-type herbicide benzobacotron:

[0121] In order to study the effect of different concentrations of herbicide safener dichlobenil on indoor millet resistance to HPPD herbicide topramezone phytotoxicity, topramezone is diluted twice, the treatment area is selected, the sample is added to water, diluted and mixed, then introduced into the sprayer, and the water is supplemented according to the area, and the active ingredient is configured to 18.00g / ha, 27.00g / ha and 36.00g / ha. The mass ratio of active ingredient of herbicide safener to active ingredient of herbicide is 3 low, medium and high levels, which are 1:10, 1:20 and 1:30 respectively. 200 pots of millet are planted in the greenhouse, each pot of millet is sowed with not less than 50 seeds, divided into 12 groups, 5 pots each, repeated three times. During the growth period of millet, the potted millet is sprayed by stem and leaf spraying. The test results are investigated on the 14th day, and the inhibition rate of fresh weight / plant height content of each treatment is calculated according to the formula. The calculation result is kept to two decimal places. The result statistical method is shown in example 1, and the test results are shown in table 14.

[0122] Table 14 Comparison of different concentrations of dichlobenil relieving millet phytotoxicity

[0123]

[0124]

[0125] The results show that low, medium and high concentrations of herbicide safener dichlobenil containing quinoline structure can protect millet to a certain extent.

[0126] In summary, the herbicide safener containing quinoline structure can relieve the phytotoxicity of HPPD herbicide to crops such as wheat, rice and millet, and the effect of relieving the phytotoxicity of HPPD herbicide to wheat is particularly significant. When the mass ratio of active ingredient is 1:(0.7-70.0), the herbicide safener dichlobenil containing quinoline structure and the HPPD herbicide topramezone compound herbicide combination agent described in the application is feasible, which does not affect the efficacy on the basis of safety to wheat, rice and millet.

[0127] Further, the application describes the related compound formula and test results, which prove the feasibility of its application in specific conditions. The HPPD herbicide phytotoxicity relieving effect of dichlobenil on wheat is much better than that on rice and millet, which may be related to the interaction between target and crops.

[0128] Although the embodiments of the present application are disclosed for illustrative purposes, various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be considered as disclosed by the present application and belong to the protection scope of the present application. Various substitutions, changes and modifications are possible without departing from the spirit and scope of the present application and the appended claims, and therefore, the scope of the present application is not limited to the disclosed content of the embodiments.

Claims

1. A herbicidal composition for use on gramineous crops, characterized in that... The herbicidal composition comprises a safener and a p-hydroxyphenylpyruvate dioxygenase inhibitor, wherein the safener is selected from acetamiprid and the p-hydroxyphenylpyruvate dioxygenase inhibitor is selected from benzoxazine. The mass ratio of the safener to the p-hydroxyphenylpyruvate dioxygenase inhibitor is 1:(5-40).

2. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The gramineous crops are selected from one or more of wheat, rice, or millet.

3. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The mass ratio of the safener to the p-hydroxyphenylpyruvate dioxygenase inhibitor is 1:30 or 1:

10.

4. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The herbicide composition further comprises other herbicides.

5. The herbicidal composition for gramineous crops according to claim 4, characterized in that, The other herbicides are selected from one or more of clopyralid, sodium 2,4-D, cyclohexane, diflubenzuron, and isoproturon.

6. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The herbicide composition is further compounded with clopyralid.

7. The herbicidal composition for gramineous crops according to claim 6, characterized in that... The ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to cloflupyroxyacetic acid is 1:(0.5-50).

8. The herbicidal composition for gramineous crops according to claim 6, characterized in that... The ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to cloflupyroxyacetic acid is 1:(1-40).

9. The herbicidal composition for gramineous crops according to claim 6, characterized in that... The ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to cloflupyroxyacetic acid is 1:(3-20).

10. The herbicidal composition for gramineous crops according to claim 6, characterized in that... The ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to cloflupyroxyacetic acid is 1:

5.

11. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The herbicide composition is further compounded with sodium 2,4-D.

12. The herbicidal composition for gramineous crops according to claim 11, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to sodium 2,4-methylchlorosodium is 1:(1-100).

13. The herbicidal composition for gramineous crops according to claim 11, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to sodium 2,4-methylchlorosodium is 1:(5-80).

14. The herbicidal composition for gramineous crops according to claim 11, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to sodium 2,4-methylchlorosodium is 1:(10-40).

15. The herbicidal composition for gramineous crops according to claim 11, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to sodium 2,4-methylchlorohydrin is 1:

30.

16. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The herbicide composition is further compounded with cyclohexane.

17. The herbicidal composition for gramineous crops according to claim 16, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to oxadiazon is 1:(0.1-10).

18. The herbicidal composition for gramineous crops according to claim 16, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to oxadiazon is 1:(0.2-5).

19. The herbicidal composition for gramineous crops according to claim 16, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to oxadiazon is 1:(0.8-2).

20. The herbicidal composition for gramineous crops according to claim 16, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to oxadiazon is 1:

1.

21. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The herbicide composition is further compounded with diflubenzuron.

22. The herbicidal composition for gramineous crops according to claim 21, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to diflubenzuron is 1:(0.01-1).

23. The herbicidal composition for gramineous crops according to claim 21, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to diflubenzuron is 1:(0.02-0.5).

24. The herbicidal composition for gramineous crops according to claim 21, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to diflubenzuron is 1:(0.05-0.2).

25. The herbicidal composition for gramineous crops according to claim 21, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to diflubenzuron is 1:0.

1.

26. The herbicidal composition for gramineous crops according to claim 1, characterized in that, The herbicide combination is further compounded with isoproturon.

27. The herbicidal composition for gramineous crops according to claim 26, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to isoproturon is 1:(2-200).

28. The herbicidal composition for gramineous crops according to claim 26, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to isoproturon is 1:(10-100).

29. The herbicidal composition for gramineous crops according to claim 26, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to isoproturon is 1:(30-50).

30. The herbicidal composition for gramineous crops according to claim 26, characterized in that... The mass ratio of the p-hydroxyphenylpyruvate dioxygenase inhibitor to isoproturon is 1:7.

33.

31. Use of the herbicidal composition of claim 1 in controlling weeds on gramineous crops.

32. The use of the herbicidal composition of claim 31 in controlling weeds on gramineous crops, characterized in that... The gramineous crops are selected from one or more of wheat, rice, or millet.

33. The use of the herbicidal composition of claim 31 in controlling weeds on gramineous crops, characterized in that... The grass crop mentioned is wheat.

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