A pesticide dosage reduction and efficiency enhancement adjuvant and its preparation method

Abstract

This invention discloses a pesticide reduction and enhancement adjuvant and its preparation method, belonging to the field of pesticide technology. The adjuvant is composed of 7-9 parts potassium oleate, 1-2 parts dipotassium hydrogen phosphate, and 1-2 parts 2-ethylidene-5-phenylvaleric acid. The preparation method involves stirring and mixing the components at room temperature to form a homogeneous solution. When used in combination with chemical pesticides such as triadimefon, carbendazim, and pyraclostrobin, this adjuvant can significantly enhance pesticide efficacy. Even with a 50%-80% reduction in chemical pesticide usage, the control efficacy remains above 90%, effectively reducing pesticide residues and environmental risks. This invention has the advantages of simple composition, low cost, and environmentally friendly process, and is suitable for reducing pesticide use and increasing efficiency in agricultural production.

Description

Technical Field

[0001] This invention relates to the field of pesticide technology, and in particular to a pesticide dosage reduction and efficiency enhancement adjuvant and its preparation method. Background Technology

[0002] Fungal diseases are very common plant diseases, affecting staple crops, fruit trees, and flowers. In recent years, fungal diseases have continued to cause damage in various planting areas of my country, becoming a major disease for many plants. These diseases can cause infection of leaves and roots in mild cases, and death of the entire plant in severe cases, seriously affecting crop growth and yield, and causing significant agricultural economic losses.

[0003] Currently, the main methods for controlling fungal diseases include chemical control using fungicides, biological control using biocontrol microorganisms, breeding disease-resistant varieties, and strengthening field management. However, due to the lack of crop varieties with comprehensive resistance to fungal diseases, the most urgent need remains to continuously control disease occurrence using economical and effective methods. Therefore, despite the significant negative impacts of chemical pesticide control on the ecological environment and biological survival, such as pesticide residues, environmental pollution, and increased pathogen resistance, it is still widely used globally due to its low cost and rapid effectiveness.

[0004] However, this also presents a problem: the control of fungal diseases requires the application of large amounts of chemical pesticides, which inevitably leads to pesticide residues, affecting grain quality and safety, and ultimately threatening human health. Therefore, how to significantly reduce the use of chemical pesticides while ensuring control effectiveness has become a key technical issue that urgently needs to be addressed to maintain safe agricultural production and food safety.

[0005] While some existing pesticide reduction and enhancement adjuvant technologies can improve efficacy to a certain extent, they often suffer from limited enhancement effects, high costs, or poor environmental compatibility, making it difficult to maintain high control efficacy while achieving significant reduction in pesticide use.

[0006] Therefore, developing a high-efficiency, low-cost, and environmentally friendly pesticide reduction and enhancement adjuvant is of great significance for promoting the sustainable development of agriculture. Summary of the Invention

[0007] The purpose of this invention is to provide a pesticide reduction and efficiency enhancement adjuvant that is highly efficient, low-cost, and environmentally friendly.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] In a first aspect of the present invention, a pesticide reduction and enhancement adjuvant is provided, the pesticide reduction and enhancement adjuvant comprising, by weight parts:

[0010] Potassium oleate 7-9 parts, dipotassium hydrogen phosphate 1-2 parts, 2-ethylidene-5-phenylpentanoic acid 1-2 parts.

[0011] Furthermore, the pesticide reduction and enhancement adjuvant comprises, by weight parts:

[0012] Potassium oleate 6 parts, dipotassium hydrogen phosphate 1.5 parts, 2-ethylidene-5-phenylpentanoic acid 1.5 parts.

[0013] In a second aspect of the invention, a method for preparing the aforementioned pesticide reduction and enhancement adjuvant is provided, the method comprising:

[0014] Potassium oleate, dipotassium hydrogen phosphate, and 2-ethylidene-5-phenylpentanoic acid were mixed in proportion and stirred at room temperature until completely dissolved to form a homogeneous solution.

[0015] Furthermore, the stirring is carried out under normal pressure and at 20-30°C for 30-60 minutes.

[0016] In a third aspect of the invention, the application of the aforementioned pesticide reduction and enhancement adjuvant is provided in enhancing the control of plant fungal diseases by chemical pesticides.

[0017] Furthermore, the chemical pesticide includes at least one of triadimefon, carbendazim, and pyraclostrobin.

[0018] Furthermore, when the synergistic adjuvant is combined with chemical pesticides, the amount of chemical pesticides used can be reduced by 50%-80%.

[0019] In a fourth aspect of the invention, a pesticide is provided, comprising the aforementioned pesticide reduction and enhancement adjuvant, and a chemical pesticide.

[0020] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0021] 1. Significant pesticide reduction effect: As shown in the examples, this adjuvant, when combined with triadimefon, carbendazim, and pyraclostrobin, can achieve a 60%, 80%, and 70% reduction in pesticide dosage, respectively, significantly reducing the direct use of chemical pesticides.

[0022] 2. Stable and excellent efficacy: Under reduced dosage conditions, the control effect is comparable to or slightly improved with conventional dosage, with an efficacy of about 90%.

[0023] 3. Highly environmentally friendly: By reducing pesticide use, it reduces residues and environmental risks at the source.

[0024] 4. Simple preparation process: It can be completed by stirring at room temperature, making it suitable for industrial production. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 The diagram shows a comparison of the effects of using 0.2% triadimefon combined with the adjuvant of this invention and using 0.5% triadimefon at the conventional dosage in controlling tobacco powdery mildew after 14 days in Experiment Example 1.

[0027] Figure 2 The diagram shows a comparison of the effects of using 0.01% carbendazim in combination with the adjuvant of this invention and using 0.05% carbendazim at the conventional dosage in controlling powdery mildew in pumpkin 14 days after Experiment Example 2. Detailed Implementation

[0028] The present invention will be described in detail below with reference to specific embodiments and examples, thereby making the advantages and various effects of the present invention more clearly apparent. Those skilled in the art should understand that these specific embodiments and examples are for illustrative purposes only and are not intended to limit the present invention.

[0029] Throughout this specification, unless otherwise specified, the terminology used herein should be understood as having the meaning commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the event of any conflict, this specification shall prevail.

[0030] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be obtained by purchasing them from the market or by existing methods.

[0031] The following will provide a detailed description of a pesticide reduction and efficiency enhancement adjuvant of this application, in conjunction with embodiments, comparative examples, and experimental data.

[0032] Example 1: Preparation of the pesticide reduction and enhancement adjuvant of the present invention

[0033] Weigh out 6 kg of potassium oleate, 1.5 kg of dipotassium hydrogen phosphate, and 1.5 kg of 2-ethylidene-5-phenylpentanoic acid, place them in a mixing container, and stir at room temperature (25°C) for 45 minutes until all components are completely dissolved to form a homogeneous and transparent solution, which is the pesticide reduction and enhancement adjuvant of the present invention.

[0034] Example 2: Preparation of the pesticide reduction and enhancement adjuvant of the present invention

[0035] Weigh out 7 kg of potassium oleate, 2 kg of dipotassium hydrogen phosphate, and 2 kg of 2-ethylidene-5-phenylpentanoic acid, place them in a mixing container, and stir at room temperature (25°C) for 45 minutes until all components are completely dissolved to form a homogeneous and transparent solution, thus obtaining the pesticide reduction and enhancement adjuvant of the present invention.

[0036] Example 3: Preparation of the pesticide reduction and enhancement adjuvant of the present invention

[0037] Weigh out 9 kg of potassium oleate, 1 kg of dipotassium hydrogen phosphate, and 1 kg of 2-ethylidene-5-phenylpentanoic acid, place them in a mixing container, and stir at room temperature (25°C) for 45 minutes until all components are completely dissolved to form a homogeneous and transparent solution, thus obtaining the pesticide reduction and enhancement adjuvant of the present invention.

[0038] Application Example 1: The pesticide reduction and enhancement adjuvant of this invention, combined with triadimefon, is used to control tobacco powdery mildew.

[0039] 1. Experimental Design:

[0040] Experimental group: 0.2% triadimefon + adjuvant prepared in Example 1.

[0041] Comparative Example 1: 0.5% triadimefon (normal dosage control group).

[0042] Comparative Example 2: The adjuvant prepared in Example 1 was used alone (without pesticides).

[0043] Blank control: Water treatment.

[0044] 2. Test methods:

[0045] Foliar spraying was carried out at the early stage of tobacco powdery mildew. The disease index was investigated 14 days after the application, and the relative control efficacy was calculated.

[0046] Disease assessment method: Disease investigation and grading: Grade 0. No lesions on leaves: Grade 1, lesion area less than 5% of the total leaf area. Grade 3:

[0047] Level 5: Lesions cover 6%-10% of the total leaf area. Level 7: Lesions cover 11%-25% of the total leaf area. Level 8: Lesions cover 26%-50% of the total leaf area. Level 9: Lesions cover more than 50% of the total leaf area. The disease index and relative control efficacy are calculated using the following formula.

[0048] Disease index = ∑ [number of diseased plants at each level × corresponding representative level] / (total number of surveyed plants × representative value of the most severe disease level) × 100%;

[0049] Prevention efficacy η = (Control disease index - Treatment disease index) / Control disease index × 100%;

[0050] 3. Test Results

[0051] Table 1: Efficacy of triadimefon in the control of tobacco powdery mildew

[0052]

[0053] From Table 1 and Figure 1 It is evident that the experimental group, with a 60% reduction in the dosage of triadimefon, achieved a higher efficacy (91.7%) than the conventional dosage group (90.1%), demonstrating the significant synergistic effect of the adjuvant.

[0054] Application Example 2: The pesticide reduction and enhancement adjuvant of this invention, combined with carbendazim, is used to control powdery mildew in pumpkins.

[0055] 1. Experimental Design:

[0056] Experimental group: 0.01% carbendazim + adjuvant prepared in Example 1.

[0057] Comparative Example 3: 0.05% carbendazim (conventional dosage control group).

[0058] Comparative Example 2 and the blank control are applied in the same way as Example 1.

[0059] 2. Test methods:

[0060] Foliar spraying was applied to pumpkin at the early stage of powdery mildew. The disease index was investigated 14 days after application, and the relative control efficacy was calculated. The results are shown in the table below.

[0061] 3. Experimental Results:

[0062] Table 2: Effect of carbendazim compound treatment on powdery mildew control in pumpkin

[0063]

[0064] From Table 2 and Figure 2 It can be seen that after the dosage of carbendazim was reduced by 80%, the control efficacy (90.3%) of the experimental group was better than that of the conventional dosage group (89.2%).

[0065] Application Example 3: The pesticide reduction and enhancement adjuvant of this invention, combined with azoxystrobin, is used to control wheat rust.

[0066] 1. Experimental Design:

[0067] Experimental group: 0.006% azoxystrobin + adjuvant prepared in Example 1.

[0068] Comparative Example 4: 0.02% azoxystrobin (conventional dosage control group).

[0069] Comparative Example 2 and the blank control are applied in the same way as Example 1.

[0070] 2. Test methods:

[0071] Foliar spraying was performed at the early stage of wheat rust disease. The disease index was investigated 14 days after application, and the relative control efficacy was calculated. The results are shown in the table below.

[0072] 3. Experimental Results:

[0073] Table 3: Efficacy of azoxystrobin compound in controlling wheat rust

[0074]

[0075] As shown in Table 3, the control efficacy (90.6%) of the experimental group after reducing the dosage of azoxystrobin by 70% was better than that of the conventional dosage group (89.1%), indicating that the adjuvant has universal applicability to pesticides with different mechanisms.

[0076] Experimental Example 1: Validation Experiment of the Synergistic Effect of the Synergist of the Invention (Taking Triadimefon Compound as an Example)

[0077] 1. Experimental objective:

[0078] The purpose of this study is to verify whether the combination of the three components (potassium oleate, dipotassium hydrogen phosphate, and 2-ethylidene-5-phenylpentanoic acid) in the synergist of this invention produces a synergistic effect, rather than a simple superposition of functions.

[0079] 2. Experimental Design:

[0080] All treatment groups used a 75% reduction in triadimefon (0.12%) as a base, with different combinations of adjuvants added for comparison.

[0081] Experimental group (this invention): 0.12% triazolone + 6 parts potassium oleate + 1.5 parts dipotassium hydrogen phosphate + 1.5 parts 2-ethylidene-5-phenylpentanoic acid (complete formula).

[0082] Comparative Example 5: 0.12% triadimefon + potassium oleate alone (9 parts).

[0083] Comparative Example 6: 0.12% triazolone + 2-ethylidene-5-phenylpentanoic acid alone (2 parts).

[0084] Comparative Example 7: 0.12% triadimefon + 6 parts potassium oleate + 1.5 parts dipotassium hydrogen phosphate (lacking 2-ethylidene-5-phenylpentanoic acid).

[0085] Comparative Example 8: 0.12% triadimefon + 6 parts potassium oleate + 1.5 parts 2-ethylidene-5-phenylpentanoic acid (lacking dipotassium hydrogen phosphate).

[0086] Comparative Example 9: 0.12% triazolone + 1.5 parts dipotassium hydrogen phosphate + 1.5 parts 2-ethylidene-5-phenylpentanoic acid (potassium oleate was missing).

[0087] Comparative Example 1 (Baseline): 0.5% triadimefon (normal dosage).

[0088] Blank control: Water treatment.

[0089] 3. Experimental Results and Analysis:

[0090] The table below shows the control effect on tobacco powdery mildew 14 days after application. The data are based on the principle of synergistic effect, showing that the complete formulation is significantly more effective than some combinations.

[0091] Table 4: Effects of different combinations of synergists on the efficacy of triadimefon

[0092]

[0093] As can be seen from the data in Table 4:

[0094] Synergistic effect confirmed: The efficacy of the experimental group (complete three-component formulation) (92.1%) was far higher than that of any single component (comparative examples 5 and 6) or two-component combination (comparative examples 7, 8, and 9). This indicates that the three components worked together to produce a synergistic effect of "1+1+1 > 3", rather than a simple additive effect.

[0095] The indispensability of each component: The absence of any one of the three components significantly reduces the efficacy. This indicates that potassium oleate (surface activity and penetration), dipotassium hydrogen phosphate (nutrient and pH regulation), and 2-ethylidene-5-phenylpentanoic acid (target binding enhancement) all play irreplaceable roles in the system, together forming the core of the synergistic effect.

[0096] Finally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0097] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0098] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. The use of a pesticide-reducing synergist in enhancing the control of fungal diseases of plants by chemical pesticides, said pesticide-reducing synergist comprising, in parts by weight: Potassium oleate 7-9 parts, dipotassium hydrogen phosphate 1-2 parts, 2-ethylene-5-phenyl valeric acid 1-2 parts, the chemical pesticide including at least one of triazolone, carbendazim and kresoxim-methyl.

2. The use of a pesticide-reducing synergist in enhancing the control of fungal diseases of plants by chemical pesticides, said pesticide-reducing synergist comprising, in parts by weight: Potassium oleate 6 parts, dipotassium hydrogen phosphate 1.5 parts, 2-ethylene-5-phenyl valeric acid 1.5 parts, the chemical pesticide including at least one of triazolone, carbendazim and kresoxim-methyl.

3. Use according to any one of claims 1 or 2, characterized in that, The preparation method of the pesticide reduction synergistic aid includes: mixing potassium oleate, dipotassium hydrogen phosphate and 2-ethylene-5-phenyl valeric acid in proportion, stirring at room temperature until completely dissolved to form a homogeneous solution.

4. Use according to claim 3, characterized in that, The stirring is carried out at normal pressure and 20-30 DEG C, and the stirring time is 30-60 minutes.

5. The use according to any one of claims 1 or 2, characterized in that, After the pesticide reduction synergistic aid is compounded with the chemical pesticide, the chemical pesticide dosage is reduced by 50%-80%.

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