CN117546857A - Weeding composition for rice field - Google Patents

Weeding composition for rice field Download PDF

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Publication number
CN117546857A
CN117546857A CN202210930250.XA CN202210930250A CN117546857A CN 117546857 A CN117546857 A CN 117546857A CN 202210930250 A CN202210930250 A CN 202210930250A CN 117546857 A CN117546857 A CN 117546857A
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Prior art keywords
paddy field
herbicidal composition
weight
composition according
percentage
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CN202210930250.XA
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Inventor
詹姆斯·T·布里斯托
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Jiangsu Rotam Chemical Co Ltd
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Jiangsu Rotam Chemical Co Ltd
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Priority to CN202210930250.XA priority Critical patent/CN117546857A/en
Publication of CN117546857A publication Critical patent/CN117546857A/en
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
    • A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P13/00—Herbicides; Algicides

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  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pest Control & Pesticides (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention relates to a paddy field weeding composition, which comprises oxadiargyl, pretilachlor and bensulfuron methyl. The paddy field herbicidal composition of the present invention may be applied to paddy fields before, during and after transplantation. The rice field weeding composition has excellent weeding activity on monocotyledonous and dicotyledonous weeds, but has little or no harm to rice crops.

Description

Weeding composition for rice field
Technical Field
The invention relates to a paddy field weeding composition, in particular to a paddy field weeding composition containing oxadiargyl, pretilachlor and bensulfuron methyl as effective components. The rice field weeding composition is used before, simultaneously with or after transplanting rice crops, has a very high weeding effect on annual and perennial weeds in a rice field, and is very safe to the rice crops.
Background
Weeding in paddy fields has problems such as the occurrence of resistant weeds and the generation of phytotoxicity to rice crops. In order to expand the herbicidal spectrum and enhance the efficacy of herbicides, a mixture prepared using two or more herbicides having different herbicidal actions is widely used. However, it is not optimistic that the efficacy of such blends is generally an additional efficacy and a trend towards increased phytotoxicity to rice crops is observed while improving herbicidal efficacy.
Accordingly, it is desired to develop a herbicide which can exhibit extremely excellent and desirable effects both in paddy field weed control and in phytotoxicity to rice crops.
Disclosure of Invention
In order to solve the technical problems, the invention unexpectedly discovers a novel weeding composition by combining several compounds with different weeding mechanisms and weeding spectrums according to proper proportions. The composition unexpectedly exhibits low phytotoxicity to rice crops as compared to single herbicidal components, however the herbicidal effect of the composition against various weeds in paddy fields, both annual and perennial, is enhanced in a synergistic manner.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a weeding composition for rice fields, which comprises the following components:
a first active component: oxadiargyl and the preparation method thereof,
a second active component: the pretilachlor is used for preparing the pretilachlor,
third active component: bensulfuron methyl.
The proportion range of the three active components in percentage by weight is (1-50): 1-100): 1-50.
Of the weight percentages of the three active components, "1 to 50" may be, for example, 1, 1.2, 1.5, 2, 2.5, 3, 5, 7, 9, 10, 12, 15, 18, 20, 22, 25, 30, 32, 35, 40, 45, or 50; "1 to 100" may be, for example, 1, 2, 2.5, 3, 5, 7, 9, 10, 12, 15, 18, 20, 22, 25, 30, 32, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 90 or 100; "1 to 50" may be, for example, 1, 1.5, 2, 2.5, 3, 5, 7, 9, 10, 12, 15, 18, 20, 22, 25, 30, 32, 35, 40, 45 or 50.
Illustratively, the weight percentages of the three active components may be, for example, 1:1:1, 1.2:7:1, 1:10:1, 5:1:1, 1:10:5, 10:7:5, 25:1:1, 1:2:1.
As a further improvement of the invention, the proportion range of the three active components in percentage by weight is (1-25): 1-50): 1-25.
As a further improvement of the invention, the proportion range of the three active components in percentage by weight is (1-10): 1-25): 1-10.
As a further improvement of the invention, the proportion range of the three active components in percentage by weight is (1-10): 1-15): 1-10.
As a further improvement of the invention, the proportion range of the three active components in percentage by weight is (1-5): 1-10): 1-5.
As a further improvement of the invention, the proportion range of the three active components in percentage by weight is 1.2:7:1.
In the case of the herbicide used as a practical application, the rice field weeding composition can be prepared into a conventional pesticide formulation by mixing the active component with a known solid or liquid carrier, a diluent, a surfactant or other formulation auxiliary agents.
The paddy field herbicidal composition of the present invention may be used in any of the usual forms. The preferable dosage forms of the invention can be floating granules, liquid, wettable powder, emulsifiable concentrates, suspending agents, oil suspending agents, micro-capsules, micro-emulsions, aqueous emulsions, suspension emulsions, water dispersible granules, micro-capsule suspension-suspending agents and ultra-low volume liquid.
Suitable liquid carriers for preparing the paddy field herbicidal compositions of the present invention include aromatic hydrocarbons, aliphatic hydrocarbons. Particularly suitable are polar solvents such as alcohols and their ethers and esters; in addition, vegetable oils and methyl soluble fibers. At the same time, mixtures of different liquids are also suitable.
Suitable solid carriers for preparing the herbicidal compositions for paddy fields of the present invention are diatomaceous earth, magnesium aluminum silicate, activated clay, kaolin, clay, gypsum, bentonite, white carbon black, light calcium carbonate, limestone, wood chips, corn starch, soluble starch, etc.
Suitable emulsifiers for preparing the paddy field herbicidal compositions of the present invention may be anionic and/or nonionic emulsifiers, such as alkylphenol ethoxylates, alkylphenol polyoxyethylene polyoxypropylene ethers, benzyl phenol polyoxyethylene ethers, polyoxyethylene fatty acid esters, polyoxyethylene fatty alcohol ethers, polyoxyethylene fatty amines, alkylphenol polyglycol ethers, and the like.
Dispersants suitable for preparing the paddy field herbicidal composition of the present invention may be alkyl naphthalene sulfonate, bis (alkyl) naphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether, castor oil ethylene oxide adduct, ethylene oxide-propylene oxide block copolymer, alkylphenol polyoxyethylene ether formaldehyde condensate oxime, octylphenol polyoxyethylene ether sulfate and methylcellulose. For example, sodium lignin sulfonate, calcium lignin sulfonate, sodium methyl naphthalene sulfonate formaldehyde condensate, sodium naphthalene sulfonate formaldehyde condensate oxime, sodium methylene naphthalene sulfonate, and the like.
Examples of other additives include carboxymethyl cellulose, ethylene glycol, propylene glycol, and the like, which are usually used as auxiliaries in the preparation.
The paddy field herbicidal composition of the present invention may further contain a colorant such as an inorganic pigment of iron oxide, titanium oxide or Prussian blue; an organic dye such as a Li Zhalin dye, an azo dye, a metal phthalocyanine blue or a triphenylmethane dye, or the like.
The herbicidal composition for paddy fields according to the present invention can be prepared according to a method known per se. For example, the formulation of the herbicidal composition of the present invention is prepared by mixing the aforementioned first active ingredient, second active ingredient and third active ingredient with a liquid diluent and/or a solid diluent and, if necessary, a surfactant, that is, an emulsifier and/or a dispersant and/or a foam-forming agent.
The rice field weeding composition provided by the invention comprises the following components:
a first active component: oxadiargyl and the preparation method thereof,
a second active component: the pretilachlor is used for preparing the pretilachlor,
third active component: bensulfuron-methyl is used as a base,
the weight of oxadiargyl, pretilachlor and bensulfuron together account for 1% -90%, e.g. 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 80% or 90%, preferably 10% -80%, more preferably 20% -60%, more preferably 30% -60% of the total amount of the herbicidal composition.
The herbicidal composition for paddy fields of the present invention can be used against various monocotyledonous weeds and dicotyledonous weeds which grow in paddy fields.
Monocotyledonous weeds of the following genera: barnyard grass (Echinochloa), panicum (Panicum), poa (Poa), cyperus (Cyperus), yujia (Monochoria), fimbristylis (Fimbristylis), sagittaria (Sagittaria), eleocharis, scirpus (Scirpus), alisma (Alisma), aneilema, water Sieve (Blyxa), eriocaulon (Eriocaulon), ocular (Potamogteton), and the like.
Dicotyledonous weeds of the following genus: the genus Eclipta (Eclipta), artemisia (Rotala), polygonum (Polygonum), rolippa (Rorippa), matricaria (Lindernia), bidens (Bidens), tabanus (Dopatrium), cyperus (Elatine), anisodus (Gratiola), matricaria (Lindernia), syzygium (Ludwigia), oenanthe (Oenanthe), ranunculus (Ranunculus), zea (Deinosetea), etc.
More preferably, the paddy field herbicidal composition of the present invention is suitable for controlling the following typical paddy field weeds:
monocotyledonous weeds such as: barnyard grass (Echinochloa oryzicola Vasing); herba Angustifoliae (Monochoria vaginalis Presl); needle punched peony (Eleocharis acicularis L);
water chestnut (Eleocharis Kuroguwai); heterotypic nutgrass (Cyperus difformis l.);
the flower ears Shui Shacao (Cyperus serotinus Rottboel); arrowhead (Sagittaria pygmaea Miq); narrow She Zexie (Alisma canaliculatum a.br.et Bouche); fluorescent iris (Scirpus juncoides Roxburgh).
Dicotyledonous weeds such as festival (Rotala indica Koehne); strange dishes (Lindernia procumbens Philcox); clove (Ludwigia prostrata Roxburgh);
gynura divaricata (Potamogeton distinctus a. Benn); chickweed (Elatine triandra Schk); oenanthe javanica (Oenanthe javanica).
The use of the paddy field herbicidal composition of the present invention should not be limited to these weeds in any way, but may also be applied to other weeds in the same way.
The rice field herbicidal composition of the present invention is used to surprisingly exhibit a synergistic effect as compared with the case where each herbicidal active ingredient is used alone. The application of the paddy field herbicidal composition of the present invention can reduce the concentration of each active ingredient used in controlling weeds.
The herbicidal composition for paddy fields according to the present invention can exhibit excellent herbicidal effects when applied to rice crops from the early stage of weed development immediately after transplantation to any time of the growth period. Therefore, the rice field weeding composition can obtain a wider weeding range and can widen the service life.
The weeding composition is particularly suitable for preventing and removing weeds in paddy fields. The paddy field herbicidal composition of the present invention may be applied to paddy fields before, during and after transplantation. Although the herbicidal composition for paddy fields of the present invention has excellent herbicidal activity against monocotyledonous and dicotyledonous weeds, there is little or no harm to rice crops.
The paddy field herbicidal composition of the present invention may be used as it is or in the form of a formulation or application. The administration forms are prepared by further diluting the formulation, for example in the form of a ready-to-use solution, emulsifiable concentrate, suspension, powder, wettable powder or granules. These forms of formulation may be applied to the rice field by conventional methods such as sprinkling, spraying, misting, dusting, granule sprinkling, and the like.
The suitable amount of application of the paddy field herbicidal composition of the present invention generally depends on the climatic conditions, soil conditions, chemical formulation type, target crop, target weed, application time, application mode, etc. The application amount is usually 0.01kg to 10kg, more preferably 0.01kg to 1kg, still more preferably 0.01kg to 0.5kg per hectare, depending on the total content of the active ingredient.
The paddy field herbicidal composition of the present invention can be used for controlling weeds as it is or in the form of its formulation. Tank mixing may also be carried out at the time of application and may further contain other known active compounds, in particular active compounds which are generally used in rice fields, such as fungicides, insecticides, plant growth regulators, plant nutrients, soil improvers and the like.
Detailed Description
The following examples will describe in more detail the excellent results of the paddy field herbicidal composition of the present invention. However, the invention should not be limited to this in any way.
Test example 1: testing the Effect of herbicide compositions against Rice field weeds
Target preparation:
soaking barnyard grass seeds in warm water for 24 hours, keeping moisture on filter paper, placing the filter paper into a germination accelerating box for germination accelerating for 24 hours, selecting white seeds to be sowed on spot in plastic pots with the diameter of 6cm, ensuring that 20 seeds are sowed in each pot, covering with soil for 0.5cm, absorbing water, and placing the seeds in a greenhouse for soil spraying treatment on the same day.
The water amaranth, the festival vegetables and the special-shaped nutgrass flatsedge seeds and the fine sand are respectively mixed according to the mass ratio of 1: after 20 stirring uniformly, seeds (uniformly stirred before each weighing) are weighed by adopting a balance with the precision of 0.0001 g of BAS 124S, each 60 mg of seeds are respectively dry-sown in a plastic basin with the inner diameter of 4cm, water is absorbed sufficiently, no ponding exists on the surface of soil, and the seeds are placed in a greenhouse for soil spraying treatment on the same day.
And (3) preparation of a medicament:
accurately weighing pretilachlor (95%), adding appropriate amount of acetone, slightly shaking the volumetric flask to dissolve completely, adding 0.1% Tween 80 to 100ml, and making 1000g (a.i.)/ha mother liquor.
Accurately weighing oxadiargyl (99%), adding appropriate amount of acetone and N, N-dimethylformamide, slightly shaking the volumetric flask to dissolve completely, adding 0.1% Tween 80 to 100ml, and preparing 1000g (a.i.) per ha mother liquor.
Accurately weighing bensulfuron methyl (96.7%), adding appropriate amount of acetone and N, N-dimethylformamide, slightly shaking the volumetric flask to dissolve completely, adding 0.1% Tween 80 to 100ml, and preparing into 100g (a.i.) per ha mother liquor.
Gradually diluting to the required concentration according to the requirement of the test design dosage.
Test treatment mode:
standard reference for test methods: pesticide indoor biological assay test criteria herbicide NY/T1155.3-2006 part 3 soil spray method.
Spraying on the top of a biological spraying tower, placing a to-be-treated test material on a turntable of a turntable type sprayer, spraying a sample solution, and setting clear water contrast; each treatment was repeated 4 times.
The spraying height of the spraying tower is 50cm, the rotating speed of the rotating disc is 8r/min, the spraying pressure is 0.3-0.4MPa, and the fan-shaped spraying is realized.
Culturing
After the test material is treated, the test material is cultured in a greenhouse, water is preserved, and water is supplied in an infiltrating irrigation mode after the test material naturally falls to dryness.
Results investigation and data processing:
and (3) recording the phenomenon: observing and recording the symptoms of the drug effect in time after the drug is taken;
drug efficacy index investigation: and (5) based on the blank control growth, visually inspecting the inhibition rate of various weed strains of the medicament, and calculating the average inhibition rate.
The evaluation method comprises the following steps:
standard reference: standard of biological assay in a row standard pesticide laboratory combined action assay of herbicide NY/T1155.7-2006 part 7 compounding.
The mode of action of the herbicide combination was evaluated according to the Colby method,
E 0 ＝XYZ/10000
x is the weed survival rate of the herbicide A when the dosage is P;
y is the weed survival rate of herbicide B at Q;
z is the weed survival rate of the herbicide C when the dosage is W;
E 0 is the theoretical weed survival rate of herbicide (A+B+C) when the dosage is (P+Q+W);
e is the actual weed survival rate of herbicide (A+B+C) at the level of (P+Q+W);
when E is 0 -E>10%, which shows that the mixed herbicide produces synergistic effect;
when E is 0 -E<-10% to demonstrate antagonism of the herbicide formulation;
when E is 0 E values between.+ -. 10% indicate that the herbicide formulation produces an additive effect.
TABLE 1 control of the action of the corresponding herbicidal active ingredients on barnyard grass
TABLE 2 control of the herbicidal active ingredients on the node vegetables
TABLE 3 control of the use of the corresponding herbicidal active ingredients on Amaranthus hypochondriacus
TABLE 4 control of the application of the corresponding herbicidal active ingredients to the heterotypic Cyperus
As can be seen from the above tables 1 to 4, the rice field herbicidal composition of the present invention is used which surprisingly shows a synergistic effect as compared with the case where each herbicidal active ingredient is used alone. The application of the paddy field herbicidal composition of the present invention can reduce the concentration of each active ingredient used in controlling weeds.
Test example 2 test of safety of herbicide composition against rice
Test rice: nanjing No. 46
The experimental requirements are: the method is selected from a transplanted paddy field with evenly distributed field grass phases, the relative conditions of cultivation management and fertilization level are consistent, and each district meets the independent irrigation and drainage conditions. In the whole test process, other agronomic operations are not changed except the test requirements.
Treatment agent:
the raw materials of pretilachlor, oxadiargyl and bensulfuron methyl are respectively dissolved by acetone and N, N-dimethylformamide to prepare a mother solution of a single agent, and then the mother solution is diluted to the required concentration by aqueous solution containing 0.1% of Tween-80.
The application method comprises the following steps:
the whole district is evenly thrown and applied 3 days before the rice is transplanted, the water layer in the field is 3-5cm to ensure that the rice core is not submerged, and water is kept continuously until the rice is transplanted.
Investigation: the plant height is 16 days after the medicine and 30 days after the medicine.
Table 5 test results
The plant height of the rice is measured 16 days and 30 days after the pesticide, the phytotoxicity symptoms of the plant are observed, obvious phytotoxicity spots are not found on the treated 1-3 plants, obvious difference is not found among the plant heights, and obvious difference is not found on the safety of the rice. 45 days after the drug, no obvious drug-induced spots were found on all treated plants.

Claims (10)

1. A herbicidal composition for paddy fields comprising:
a first active component: oxadiargyl and the preparation method thereof,
a second active component: the pretilachlor is used for preparing the pretilachlor,
third active component: bensulfuron methyl;
the proportion range of the three active components in percentage by weight is (1-50): 1-100): 1-50.
2. The paddy field herbicidal composition according to claim 1, wherein: the proportion range of the three active components in percentage by weight is (1-25): 1-50): 1-25.
3. The paddy field herbicidal composition according to claim 1, wherein: the proportion range of the three active components in percentage by weight is (1-10): 1-25): 1-10.
4. The paddy field herbicidal composition according to claim 1, wherein: the proportion range of the three active components in percentage by weight is (1-10): 1-15): 1-10.
5. The paddy field herbicidal composition according to claim 1, wherein: the proportion range of the three active components in percentage by weight is (1-5): 1-10): 1-5.
6. The paddy field herbicidal composition according to claim 1, wherein: the proportion range of the three active components in percentage by weight is 1.2:7:1.
7. The paddy field herbicidal composition according to claim 1, wherein: the weight of the oxadiargyl, pretilachlor and bensulfuron methyl accounts for 30% -60% of the total weight of the weeding composition.
8. The paddy field herbicidal composition according to claim 1, wherein: the herbicide composition is prepared from floating granules, liquid, wettable powder, emulsifiable concentrate, suspending agent, oil suspending agent, microcapsule, microemulsion, aqueous emulsion, suspending emulsion, water dispersible granule, microcapsule suspension-suspending agent and ultra-low volume liquid.
9. Use of the paddy field herbicidal composition according to claim 1 for combating various monocotyledonous and dicotyledonous weeds growing in paddy fields.
10. The use according to claim 9, characterized in that the paddy field herbicidal composition is applied to the paddy field before, during and/or after the transplanting.
CN202210930250.XA 2022-08-03 2022-08-03 Weeding composition for rice field Pending CN117546857A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202210930250.XA CN117546857A (en) 2022-08-03 2022-08-03 Weeding composition for rice field

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Publication Number Publication Date
CN117546857A true CN117546857A (en) 2024-02-13

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