CN113100241A - Synergistic pesticide composition containing paeoniflorin and alginate oligosaccharides - Google Patents
Synergistic pesticide composition containing paeoniflorin and alginate oligosaccharides Download PDFInfo
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- CN113100241A CN113100241A CN202110356210.4A CN202110356210A CN113100241A CN 113100241 A CN113100241 A CN 113100241A CN 202110356210 A CN202110356210 A CN 202110356210A CN 113100241 A CN113100241 A CN 113100241A
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- A—HUMAN NECESSITIES
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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- A—HUMAN NECESSITIES
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- A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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- A01N43/80—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 one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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Abstract
The invention discloses a synergistic pesticide composition containing paeoniflorin and fucoidan, which contains an active ingredient A and an active ingredient B; wherein A is selected from any one of the following compounds and/or their agriculturally acceptable salts: fluazinam, chlorothalonil, fluxapyroxad, boscalid, fluopyram, fluxapyroxad, isotianil, fenpicoamid; b is selected from any one of the following compounds and/or their agriculturally acceptable salts: epoxiconazole, flusilazole, triflumizole, prothioconazole, difenoconazole, tebuconazole, triflumizole, metconazole; the mass fraction of the paeoniflorin in the pesticide composition is 0.1-10%; the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.1-8%; the mass fraction of A in the pesticide composition is 1-50%; the mass fraction of B in the pesticide composition is 1-50%. The control effect of the composition of the invention is still increased slightly under the condition of 15 to 30 percent reduction of the formula.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly discloses a synergistic pesticide composition containing paeoniflorin and fucoidan.
Technical Field
The synergist is a chemical article with no or little sterilization performance on pathogenic bacteria, but can greatly improve the sterilization effect of the bactericide after being added into a bactericide. The synergist has the advantages of greatly increasing the sterilization effect, reducing the using amount of the bactericide, reducing the cost, reducing the content of the bactericide in human environment, reducing the drug resistance of pathogenic bacteria to the bactericide in a certain period, and controlling diseases more economically.
Paeoniflorin, also called peoniflorin, is a pinane monoterpene picrin separated from traditional Chinese medicines of radix Paeoniae Rubra and radix Paeoniae alba, and is widely present at the root of Paeonia plants such as Ranunculaceae Paeonia lactiflora, Paeonia suffruticosa, etc. The structural formula is as follows:
brown algae oligosaccharide: the algin is degraded by adopting different degradation methods (acid degradation method, enzyme degradation method and oxidation degradation method) to obtain a series of alginate oligosaccharides with the polymerization degree of less than 20. Is a linear oligomer composed of beta-D-polymannuronic acid (M) and alpha-L-polyguluronic acid (G), and comprises polymannuronic acid (PM), polyguluronic acid (PG) and hybrid alginate-derived oligosaccharide (PMG). The brown algae oligosaccharide is used as a plant endogenous oligosaccharide and plays a role of a signal molecule in plant stress resistance reaction. The brown algae oligosaccharide can form a protective film to effectively protect protein molecules from degeneration and inactivation, so that the life process and biological characteristics of a living body are maintained, and the extraordinary stress resistance tolerance is shown to the external severe environment.
According to the research of Phillips McDougall company, the average development cost of finding, developing and registering 1 pesticide active ingredient increased by 3000 ten thousand dollars, or 11.7% and reached 2.86 hundred million dollars, in 2010-2014 compared to 2005-2008. In 2005-2008, the average cost of pesticide development was $ 2.56 billion, which increased 39% in 2000; the average development cost in 2000 is $ 1.84 million, the development period is 5-10 years, and the speed of the pesticide resistance is increased when the pesticide is applied to the crop pests and weeds which are difficult to catch up; other methods such as crop layout adjustment, rotation of different pesticides and the like hardly have obvious effects in the actual operation process. There is therefore a continuing need in the agricultural pest control field to provide pesticidal combinations that often provide improved properties, such as biological properties, synergistic properties, and the like.
The price of developing new pesticides is high, the period is long, and compared with the prior art, the efficient, low-toxicity and low-residue compound and blending development and research have the advantages of small investment, short development period, and great attention from both home and abroad, so that the development strength is increased.
The pesticide plays an important role in agricultural production, and the organic chemical pesticide greatly enhances the capability of human beings for controlling diseases and pests, and makes a great contribution to the recovery of crop yield loss. However, long-term dependence on and large-scale use of organic synthetic chemical pesticides have brought about a series of well-known problems of environmental pollution, ecological balance destruction and food safety, and have brought about a lot of adverse effects on promoting the sustainable development of agricultural economy.
With the improvement of health consciousness of people and the reduction of pesticide residue, the efforts to develop novel low-toxicity and low-residue pesticides and synergistic auxiliaries become urgent and are the needs of sustainable development of the economic society.
The reasonable and scientific use of the pesticide can improve the control effect, delay the generation of drug resistance of the pests or enlarge the use range and treat different types of pests, save manpower and the dosage, reduce the cost, improve the pesticide effect, reduce the toxicity and enhance the safety to people and livestock.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a synergistic pesticide composition containing paeoniflorin and fucoidan oligosaccharide, and aims to realize the reduction of the use of pesticides by providing the synergistic composition.
The invention is realized by the following technical scheme:
a synergistic pesticide composition containing paeoniflorin and alginate oligosaccharide comprises an active component A and an active component B, wherein A is selected from any one of the following compounds and/or agriculturally and pharmaceutically acceptable salts thereof: fluazinam, chlorothalonil, fluxapyroxad, boscalid, fluopyram, fluoxapyroxad (pydiflumetofen), isotianil, fenpicoamid (CAS number: 517875-34-2); b is selected from any one of the following compounds and/or their agriculturally acceptable salts: epoxiconazole, flusilazole, triflumizole, prothioconazole, difenoconazole, tebuconazole, mefentriflunazole, metrafil, metconazole; the mass fraction of the paeoniflorin in the pesticide composition is 0.1-10%, the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.1-8%, the mass fraction of the A in the pesticide composition is 1-50%, and the mass fraction of the B in the pesticide composition is 1-50%.
Preferably, a is selected from any one of the following groups of compounds and/or their agriculturally pharmaceutically acceptable salts: fluazinam, chlorothalonil, boscalid, fluopyram, pyrafluxastrobin (pydiflumetofen), isotianil, fenpicoamid (CAS number: 517875-34-2); b is selected from any one of the following compounds and/or their agriculturally acceptable salts: epoxiconazole, flusilazole, triflumizole, prothioconazole, tebuconazole, mefentrifluconazole (trifloxystrobin), metconazole.
The invention relates to a bactericidal composition, the total amount of paeoniflorin, alginate oligosaccharide, A and B in the composition can be selected according to specific factors to realize the effect, and the total mass fraction of the paeoniflorin, the alginate oligosaccharide, the A and the B in the composition is 1-90%, preferably 10-50%.
Preferably, the mass fraction of the paeoniflorin in the pesticide composition is 0.1-3%; the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.1-8%.
More preferably, the mass fraction of the paeoniflorin in the pesticide composition is 0.1-0.5%; the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.5-1.8%.
More preferably, the paeoniflorin is 0.1% by mass of the pesticide composition, and the alginate oligosaccharide is 1.8% by mass of the pesticide composition.
More preferably, the paeoniflorin is 0.2% by mass of the pesticide composition, and the alginate oligosaccharide is 1.5% by mass of the pesticide composition.
More preferably, the paeoniflorin is 0.3% by mass of the pesticide composition, and the alginate oligosaccharide is 1.0% by mass of the pesticide composition.
More preferably, the paeoniflorin is 0.4% by weight of the pesticide composition, and the alginate oligosaccharide is 0.8% by weight of the pesticide composition.
More preferably, the paeoniflorin accounts for 0.5% of the pesticide composition, and the alginate oligosaccharide accounts for 0.5% of the pesticide composition.
The bactericidal composition can be added with an auxiliary agent and an excipient to prepare a suspending agent by a certain technical means.
The germicidal compositions of the present invention may also include additional other components, such as surfactants. Suitable surfactants are emulsifiers, dispersants or wetting agents of an ionic or nonionic nature, or mixtures of these surfactants. Suitable examples of such surfactants include polyacrylates such as fatty alcohol-polyoxyethylene ether, polyoxyethylene alkylaryl ether, polyoxyethylene higher fatty acid ester, phosphoric acid ester of polyoxyethylene alcohol or phenol, fatty acid ester of polyhydric alcohol, sodium alkylaryl sulfonate, naphthalenesulfonic acid polymer, lignosulfonate, high-molecular comb-shaped branched copolymer, butylnaphthalenesulfonate, alkylaryl sulfonate, sodium alkylsulfosuccinate, oils and fats, condensates of fatty alcohol and ethylene oxide, alkyltaurates, and protein hydrolysates. Suitable oligosaccharides or polymers are based, for example, on ethylene monomers, acrylic acid, polyoxyethylene or polyoxypropylene alone or in combination with, for example, (poly) alcohols or (poly) amines. When one of the active compounds and/or one of the inert carriers is insoluble in water and when applied in water, a surfactant must be present. The proportion of the surfactant is 5% to 30% by mass of the composition of the present invention.
If appropriate, further additional components, such as protective colloids, binders, adhesives, thickeners, thixotropic agents, penetrants, stabilizers, sequestering agents, complex-forming agents, for example, may also be present. In general, the active compounds may be combined with any solid or liquid additive conventionally used for formulation purposes.
The formulations of the invention can be prepared by mixing the active ingredient with at least one of the following substances in a known manner: solvents or diluents, emulsifiers, dispersants, and/or binders or fixatives, wetting agents, water repellents, and if desired siccatives and colorants, stabilizers, pigments, defoamers, preservatives, thickeners, water, and other processing aids.
The bactericidal composition is used for controlling but not limited to diseases of crops, wherein the crops comprise grain crops (such as rice, wheat, corn and the like), bean crops, fiber crops, sugar crops, melon crops, fruit crops, dry fruit crops, root crops, oil crops, flower crops, medicinal crops, raw material crops and green manure pasture crops.
The bactericidal composition is suitable for controlling plant pathogenic fungal diseases, plant pathogenic bacterial diseases and plant virus diseases, and can be used for controlling phytophthora root rot, gray mold, leaf rust, spot disease, anthracnose and early blight of tomatoes; downy mildew, powdery mildew, gray mold, anthracnose, blight, black spot and brown spot of cucumber; anthracnose and gray mold of strawberry; powdery mildew, anthracnose and blight of pumpkin; white spot leaf blight, black spot, gray mold and gray rot of onion; powdery mildew, gray mold and fusarium wilt of eggplant; black spot of green Chinese onion; white spot and black spot of Chinese cabbage; sclerotinia rot and gray mold of bell peppers; powdery mildew, anthracnose, blight and gummy stem blight of cucumber; powdery mildew, anthracnose, blight and gummy stem blight of melons; gray mold of lettuce; black spot and gray mold of red bayberry; powdery mildew, anthracnose and defoliation of persimmons; citrus canker, scab and anthracnose; scab, black spot and early blight of pear; gray mold, anthracnose, brown spot, anthracnose, blight and branch swelling disease of grape; scab, gray spot, anthracnose of peach; scab, alternaria, early blight, brown spot, coal spot, black spot and brown rot of apple; stem blight, anthracnose, gray mold and sclerotinia of mung bean; anthracnose, gray mold and sclerotinia of kidney beans; ring spot of broad bean; soybean purpura; powdery mildew of tobacco, brown spot and spot of beet; anthracnose, wheel spot and new bud blight and gray mold of tea; plant diseases such as scab, anthracnose, gray mold and powdery mildew of flowers; rice sheath blight disease, bacterial leaf blight and false smut; wheat powdery mildew, gibberellic disease, banded sclerotial blight, leaf spot, rust disease, sclerotinia, net spot, leaf streak disease and the like; sclerotinia rot of rape and peanut, gray mold, black spot, brown spot, black shank, rust disease, etc.
The pesticidal composition of the present invention may also be applied in combination with other active ingredients such as fungicides, bactericides, attractants, insecticides, acaricides, nematicides, growth regulators, herbicides, safeners, fertilizers or semiochemicals and the like.
The inventor finds out through research that: the paeoniflorin and the alginate oligosaccharides are mixed in the bactericide formula, have obvious synergistic effect and have obvious synergistic effect on diseases caused by higher fungi, lower fungi or nematode diseases. Easy oxidation and decomposition in air, short residual time and no environmental pollution.
From the analysis of the synergistic action mechanism, paeoniflorin is a high-efficiency penetration enhancer for promoting effective components to enter an active body, and can quickly penetrate plant epidermis and stomata and damage the leaf environment of hypha elongation and spore germination; the brown algae oligosaccharide has excellent moisture absorption, moisture retention and wetting performance and can induce plants to generate stress resistance; the research of a pen-holder team discovers that paeoniflorin and alginate-derived oligosaccharide are combined to form supermolecules (hereinafter referred to as supermolecules) through alcoholic hydroxyl groups and carboxylic acid groups, so that the effective components have lasting effect and safety on crops. The lasting effect is as follows: the supermolecule substance is added into the liquid preparation, so that effective component molecules can be well wrapped in the supermolecule to form a whole with the supermolecule. When the spray is sprayed on the leaf surface of crops, the supermolecule is connected with paeoniflorin molecular segment and preferentially contacts the leaf surface, so that the epidermis and air holes of the leaf surface are quickly stimulated to enable effective ingredients to enter the crops, and the supermolecule can be absorbed by plant cells when entering the crops, so that the effective ingredients are released, and the effective ingredients are transported to the pathogenic bacteria of the plants. The outer end of the supermolecule forms a protective layer which is uniformly distributed by alginate oligosaccharide molecules, so that liquid drops are isolated from air, the volatilization of the water in the liquid drops is locked, the water is continuously absorbed from the atmosphere, the existence of the liquid drops for a long time is kept, the oxidation deterioration rate of effective components is reduced, and the medicine is absorbed and conducted for a long time; safety: the excessive effective components enter the crops, can cause the pathological changes, the aging and the death of healthy cells of the crops to different degrees, but the introduction of supermolecules can stimulate and adjust the immunity of the organism, activate the immune system, and timely remove the aging, the pathological changes, superoxide anions and hydroxyl free radicals, so the application of the medicine is safer. This is the theory that the amount of the pesticide used is reduced and the efficacy of the pesticide is improved after the use.
Advantageous effects
The synergistic pesticide composition containing paeoniflorin and alginate-derived oligosaccharide provided by the invention has the following beneficial effects by compounding paeoniflorin and alginate-derived oligosaccharide:
1. the synergistic effect on the target is obvious;
2. the dosage of chemical components of the mixed agent is reduced;
3. the utilization rate of the pesticide is improved, and the cost of the pesticide is reduced.
Detailed Description
In order to better understand the essence of the present invention, the following examples are given to illustrate the technical contents of the present invention, but the contents of the present invention are not limited thereto.
The environment-friendly bactericide provided by the embodiment of the invention can be prepared into a required conventional pesticide formulation such as wettable powder, missible oil, water dispersible granules, a suspending agent or an aqueous emulsion by adding various additives commonly used in the field according to requirements.
According to the design scheme of the preparation formula, the synergistic effect of the prepared paeoniflorin in the bactericide and the application technology thereof can support the feasibility and the rationality of the invention by the following laboratory stability verification process results.
Example 1
The target preparation: 8% fluazinam, 24% prothioconazole, 0.3% paeoniflorin, 1.0% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluazinam, prothioconazole, paeoniflorin and fucoidan, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 8% fluazinam 24% prothioconazole 0.3% paeoniflorin 1.0% fucoidan suspending agent.
Example 2
The target preparation: 25% tebuconazole, 25% chlorothalonil, 0.3% paeoniflorin, 1.0% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding tebuconazole, chlorothalonil fluazinam, epoxiconazole, paeoniflorin and alginate oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the suspension agent containing 25% of tebuconazole, 25% of chlorothalonil, 0.3% of paeoniflorin and 1.0% of alginate oligosaccharide.
Example 3
The target preparation: 40% fluazinam, 8% epoxiconazole, 0.4% paeoniflorin, 0.8% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluazinam, epoxiconazole, paeoniflorin and alginate oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 40% fluazinam-8% epoxiconazole-0.4% paeoniflorin-0.8% alginate oligosaccharide suspending agent.
Example 4
The target preparation: 4% fluazinam, 6% flusilazole, 0.3% paeoniflorin, 1.0% alginate-derived oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluazinam, flusilazole, paeoniflorin and alginate-derived oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 4% fluazinam-6% flusilazole-0.3% paeoniflorin-1.0% alginate-derived oligosaccharide suspending agent.
Example 5
The target preparation: 30% fluazinam, 10% triflumizole, 0.5% paeoniflorin, 0.5% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluazinam, triflumizole, paeoniflorin and alginate-derived oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the suspension of 4% fluazinam, 6% flusilazole, 0.5% paeoniflorin and 0.5% alginate-derived oligosaccharide.
Example 6
The target preparation: 16% fluazinam, 32% triflumizole, 0.2% paeoniflorin, 1.5% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluazinam, triflumizole, paeoniflorin and alginate oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 16% fluazinam 32% triflumizole 0.2% paeoniflorin 1.5% alginate oligosaccharide suspending agent.
Example 7
The target preparation: 15% fluopyram, 15% epoxiconazole, 0.3% paeoniflorin, 1.0% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluopyram, epoxiconazole, paeoniflorin and alginate oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 15% fluopyram.15% epoxiconazole.0.3% paeoniflorin.1.0% alginate oligosaccharide suspending agent.
Example 8
The target preparation: 15% fluopyram, 30% flusilazole, 0.4% paeoniflorin, 0.8% alginate-derived oligosaccharide suspension;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluopyram, flusilazole, paeoniflorin and alginate-derived oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 15% fluopyram 30% flusilazole 0.4% paeoniflorin 0.8% alginate-derived oligosaccharide suspending agent.
Example 9
The target preparation: 10% fluopyram, 30% prothioconazole, 0.2% paeoniflorin, 1.5% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluopyram, prothioconazole, paeoniflorin and fucoidan, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to obtain the 10% fluopyram, 30% prothioconazole, 0.2% paeoniflorin and 1.5% fucoidan suspension.
Example 10
The target preparation: 20% fluconazole hydroxylamine (pydiflumetofen) 10% epoxiconazole 0.3% paeoniflorin 1.0% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding pydiflumetofen, epoxiconazole, paeoniflorin and fucoidan, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 20% pydiflumetofen.10% epoxiconazole.0.3% paeoniflorin.1.0% fucoidan suspending agent.
Example 11
The target preparation: 15% fenpicoxamid 15% prothioconazole 0.1% paeoniflorin 1.8% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the suspending agent of the composition are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fenpicoxamid, epoxiconazole, paeoniflorin and alginate oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 15% fenpicoxamid, 15% prothioconazole, 0.1% paeoniflorin and 1.8% alginate oligosaccharide suspending agent.
Example 12
The target preparation: 20% fluazinam 4% metconazole 0.4% penoniflorin 0.8% alginate oligosaccharide suspending agent;
the formula comprises the following components:
the concrete processing steps of the composition suspending agent are as follows: mixing water and an auxiliary agent according to the formula, uniformly mixing by high-speed shearing, adding fluazinam, metconazole, paeoniflorin and alginate oligosaccharide, continuously uniformly mixing by shearing, and then grinding in a horizontal sand mill to ensure that the particle size of the preparation is below 5 mu m, thus obtaining the 20% fluazinam 4% metconazole 0.4% paeoniflorin 0.8% alginate oligosaccharide suspending agent.
Test of field drug effect
Reagent to be tested: example 1 of 8% fluazinam.24% prothioconazole.0.3% paeoniflorin.1.0% fucoidan suspension and 4 adjusted (0.1%, 0.2%, 0.4%, 0.5%) paeoniflorin (1.8%, 1.5%, 0.8%, 0.5%) fucoidan suspension in concentration gradient.
Control agents: 8% fluazinam 24% prothioconazole 0.3% paeoniflorin suspending agent, 8% fluazinam 24% prothioconazole 1.0% alginate oligosaccharide suspending agent, 8% fluazinam 24% prothioconazole and blank control
The control object is: scab of wheat
The experimental method comprises the following steps: adopting normal field dosage, setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 30m2And a knapsack electric sprayer is adopted for spraying in the test. Disease index and control effect were investigated 14 days after application. The test results are shown in table 1:
TABLE 1
Test for field drug effect
Reagent to be tested: the suspension of example 2 contains tebuconazole 25%, chlorothalonil 0.3%, paeoniflorin 1.0%, and alginate-derived oligosaccharides 4 adjusted (0.1%, 0.2%, 0.4%, 0.5%) concentration gradients of paeoniflorin (1.8%, 1.5%, 0.8%, 0.5%).
Control agents: 25% tebuconazole, 25% chlorothalonil, 0.3% paeoniflorin suspending agent, 2% 5 tebuconazole, 25% chlorothalonil, 1.0% alginate oligosaccharide suspending agent, 25% tebuconazole, 25% chlorothalonil suspending agent and blank control
The control object is: wheat scab experiment method: adopting normal field dosage, setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 30m2And a knapsack sprayer is adopted for spraying in the test. Regulating respectively 14 days after applicationExamine the disease and prevent the disease. The test results are shown in table 2:
TABLE 2
Field drug effect test III
Reagent to be tested: 8% fluazinam, 24% prothioconazole, 0.3% paeoniflorin, 1.0% alginate-derived oligosaccharide suspension and 4 types of adjusted (0.1%, 0.2%, 0.4%, 0.5%) paeoniflorin, 1.8%, 1.5%, 0.8%, 0.5% alginate-derived oligosaccharide concentration gradient proportioning component suspension.
Control agents: 8% fluazinam 24% prothioconazole 0.3% paeoniflorin suspending agent, 8% fluazinam 24% prothioconazole 1.0% alginate oligosaccharide suspending agent, 8% fluazinam 24% prothioconazole and blank control
The control object is: rust of wheat
The experimental method comprises the following steps: adopting normal field dosage, setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 30m2And a knapsack sprayer is adopted for spraying in the test. Disease index and control effect were investigated 7 days and 14 days after application. The test results are shown in table 3:
TABLE 3
Test for field drug effect
Reagent to be tested: 8% fluazinam, 24% prothioconazole, 0.3% paeoniflorin, 1.0% alginate-derived oligosaccharide suspension and 4 types of adjusted (0.1%, 0.2%, 0.4%, 0.5%) paeoniflorin, 1.8%, 1.5%, 0.8%, 0.5% alginate-derived oligosaccharide concentration gradient proportioning component suspension.
Control agents: 8% fluazinam 24% prothioconazole 0.3% paeoniflorin suspending agent, 8% fluazinam 24% prothioconazole 1.0% alginate oligosaccharide suspending agent, 8% fluazinam 24% prothioconazole and blank control
The control object is: powdery mildew of wheat
The experimental method comprises the following steps: adopting normal field dosage, setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 30m2And a knapsack sprayer is adopted for spraying in the test. Disease index and control effect were investigated 7 days and 14 days after application. The test results are shown in Table 4:
TABLE 4
Field efficacy test five
Reagent to be tested: 20% of fluconazole hydroxylamine (pydiflumetofen) 10% of epoxiconazole 0.3% of paeoniflorin 1.0% of alginate-derived oligosaccharide suspending agent and 4 types of adjusted (0.1%, 0.2%, 0.4%, 0.5%) of paeoniflorin (1.8%, 1.5%, 0.8%, 0.5%) alginate-derived oligosaccharide concentration gradient proportioning component suspending agent.
Control agents: 20% fluconazole hydroxylamine (pydiflumetofen) 10% epoxiconazole 0.3% paeoniflorin suspension, 20% fluconazole hydroxylamine (pydiflumetofen) 10% epoxiconazole 1.0% alginate oligosaccharide suspension, blank control
The control object is: grey mould of strawberry
The experimental method comprises the following steps: adopting normal field dosage, setting three times of repetition of dosage treatment, repeatedly adopting random block arrangement, and setting area of each repetition to be 30m2And a knapsack sprayer is adopted for spraying in the test. Disease index and control effect were investigated 7 days and 14 days after application. The test results are shown in Table 5:
TABLE 5
The results of the pesticide effect test of various diseases and pests on various crops in the field show that:
(1)8 percent of fluazinam, 24 percent of prothioconazole and other bactericides are added with 0.3 percent of paeoniflorin, 1.0 percent of alginate-derived oligosaccharide suspending agent to have the control effect of 92.45(90.12 to 94.77 percent), and the average control effect on wheat scab is improved by 4.04 percent compared with 88.41 percent (87.24 to 89.57 percent) of the control effect of the same dosage treatment.
(2) The prevention effect tends to be improved along with the increase of the mixing amount of the 0.3 percent paeoniflorin and 1.0 percent alginate-derived oligosaccharide suspending agent, but the difference is not obvious.
(3)8 percent fluazinam, 24 percent prothioconazole, 0.3 percent paeoniflorin, 1.0 percent alginate-derived oligosaccharide suspending agent, the control effect on wheat rust and powdery mildew is 92.06 percent and 86.57 percent respectively after the pesticide is applied for 7 days, and the control effect is respectively increased by 2.13 percent and 3.21 percent compared with the control effect of the same dosage of the bactericide which is not added; 20 percent of fluconazole hydroxylamine (pydiflumetofen) and 10 percent of epoxiconazole are added into 0.3 percent of paeoniflorin and 1.0 percent of alginate oligosaccharide suspending agent, the prevention effect on the gray mold of the strawberry is 95.25 percent after the drug is applied for 7 days, and the prevention effect is respectively increased by 3.83 percent compared with the single use of the same dosage of bactericide; the synergistic trend of the medicine after 14 days is consistent with that of the medicine after 7 days.
(4) The dosage of the bactericide such as 8 percent fluazinam, 24 percent prothioconazole and the like added with 0.3 percent paeoniflorin and 1.0 percent alginate-derived oligosaccharide suspending agent is reduced by 15 to 30 percent, and the control effect on wheat scab, rust disease, powdery mildew, strawberry gray mold and other diseases is kept equal or slightly increased without adding 0.3 percent paeoniflorin and 1.0 percent alginate-derived oligosaccharide suspending agent, and the difference is not obvious.
The test tracks the observation result, the paeoniflorin and the alginate oligosaccharide are mixed into the chemical bactericide formula, the synergistic effect is obvious for the tested crops, and the lasting effect is long.
The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the invention without departing from the spirit and scope of the inventive concept and the scope of the appended claims is intended to be protected.
Claims (8)
1. A synergistic pesticide composition containing paeoniflorin and alginate oligosaccharides is characterized by comprising an active ingredient A and an active ingredient B; wherein A is selected from any one of the following compounds and/or their agriculturally acceptable salts: fluazinam, chlorothalonil, fluxapyroxad, boscalid, fluopyram, fluxapyroxad, isotianil, fenpicoamid; b is selected from any one of the following compounds and/or their agriculturally acceptable salts: epoxiconazole, flusilazole, triflumizole, prothioconazole, difenoconazole, tebuconazole, triflumizole, metconazole; the mass fraction of the paeoniflorin in the pesticide composition is 0.1-10%; the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.1-8%; the mass fraction of A in the pesticide composition is 1-50%; the mass fraction of B in the pesticide composition is 1-50%.
2. The synergistic pesticide composition containing paeoniflorin and fucoidan oligosaccharide according to claim 1, wherein the mass fraction of paeoniflorin in the pesticide composition is 0.1-3%; the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.1-8%.
3. The synergistic pesticide composition containing paeoniflorin and fucoidan oligosaccharide according to claim 2, wherein the mass fraction of paeoniflorin in the pesticide composition is 0.1-0.5%; the mass fraction of the brown algae oligosaccharide in the pesticide composition is 0.5-1.8%.
4. The synergistic pesticide composition containing paeoniflorin and alginate oligosaccharide as claimed in claim 3, wherein the mass fraction of paeoniflorin in the pesticide composition is 0.1%, and the mass fraction of alginate oligosaccharide in the pesticide composition is 1.8%.
5. The synergistic pesticide composition containing paeoniflorin and alginate oligosaccharide as claimed in claim 3, wherein the mass fraction of paeoniflorin in the pesticide composition is 0.2%, and the mass fraction of alginate oligosaccharide in the pesticide composition is 1.5%.
6. The synergistic pesticide composition containing paeoniflorin and alginate oligosaccharide as claimed in claim 3, wherein the mass fraction of paeoniflorin in the pesticide composition is 0.3%, and the mass fraction of alginate oligosaccharide in the pesticide composition is 1.0%.
7. The synergistic pesticide composition containing paeoniflorin and fucoidan oligosaccharide as claimed in claim 3, wherein the weight fraction of paeoniflorin in the pesticide composition is 0.4%, and the weight fraction of fucoidan oligosaccharide in the pesticide composition is 0.8%.
8. The synergistic pesticide composition containing paeoniflorin and alginate oligosaccharide as claimed in claim 3, wherein the mass fraction of paeoniflorin in the pesticide composition is 0.5%, and the mass fraction of alginate oligosaccharide in the pesticide composition is 0.5%.
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| CN101669521A (en) * | 2008-09-12 | 2010-03-17 | 沈阳师范大学 | Brown alginate-derived oligosaccharide seed soaking agent capable of promoting growth of plants |
| CN102939977A (en) * | 2012-11-26 | 2013-02-27 | 海南正业中农高科股份有限公司 | Sterilization combination containing oligosaccharide and methoxy acrylic ester ingredient |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101669521A (en) * | 2008-09-12 | 2010-03-17 | 沈阳师范大学 | Brown alginate-derived oligosaccharide seed soaking agent capable of promoting growth of plants |
| CN102939977A (en) * | 2012-11-26 | 2013-02-27 | 海南正业中农高科股份有限公司 | Sterilization combination containing oligosaccharide and methoxy acrylic ester ingredient |
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| WO2024038054A1 (en) * | 2022-08-16 | 2024-02-22 | Syngenta Crop Protection Ag | Fungicidal compositions |
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