A pesticide efficiency-enhancing and residue-reducing adjuvant and its application

Abstract

The invention discloses a pesticide synergistic and residue-reducing adjuvant and its application. The pesticide synergistic and residue-reducing adjuvant comprises hemerocallis ketone and saponin alcohol; the mass ratio of hemerocallis ketone to saponin alcohol is (1-9): (9-1). The pesticide synergistic and residue-reducing adjuvant with hemerocallis ketone and saponin alcohol as main components and the synergistic pesticide composition composed of different varieties of pesticides have good synergistic effects, can reduce the amount of pesticides used, and thus reduce pesticide residues in plants and soil. The main components hemerocallis ketone and saponin alcohol are widely available, and the prepared synergistic and residue-reducing adjuvant is efficient, low-toxic, and environmentally friendly, and has great development and application potential.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticides, and relates to a pesticide adjuvant, in particular to a pesticide synergistic and residue-reducing adjuvant with saponin alcohol and hemerocallis ketone as main raw materials and application thereof. Background Art

[0002] Pesticides play a key role in controlling harmful organisms and promoting food production. They save about 5 million tons of grain, 1.5 million tons of cotton, 15 million tons of vegetables, and 6 million tons of fruit for my country every year. However, the long-term irrational use of pesticides has brought about a series of problems, such as environmental pollution, pesticide residues, the emergence of resistance, rampant resurgence, and lethal and sublethal effects on natural enemies. In order to reduce or eliminate the adverse effects of the large-scale use of chemical pesticides, the use of pesticide synergistic adjuvants is an important solution. It can effectively improve the physical and chemical properties of the liquid, reduce the amount of pesticides, improve the efficacy and utilization rate, and delay the emergence of resistance. At the same time, since such adjuvants usually have good emulsification, wetting, dispersion and other effects, they can improve the surface tension of chemical pesticides, improve dispersion and permeability, etc., which is conducive to the spreading of chemical pesticide liquid on plant leaves and can effectively reduce pesticide residues.

[0003] Gleditsia sinensis Lam., also known as soapberry, is a deciduous tree or small tree of the genus Gleditsia in the Leguminosae family that is widely distributed in my country. my country is rich in soapberry resources. Bijie City, Guizhou Province, has vigorously developed the soapberry industry. Currently, about 37,000 hectares of soapberry are planted, with an annual output value of about 100 million yuan. The water extract of soapberry contains a variety of compounds, mainly saponin, which has good surface activity and is often used in the manufacture of detergents and other cleaning products; in addition, the water extract of soapberry also contains other compounds such as sapindinol, saponin A, and saponin B. Studies have shown that soapberry extracts or their active ingredients have multiple activities such as antioxidant, hypoglycemic, antibacterial and anti-inflammatory, and have good development prospects in many fields such as medicine.

[0004] Hemerocallis plants contain a variety of active ingredients, mainly flavonoids, alkaloids, anthraquinones, terpenes and saponins, which have anti-inflammatory and antioxidant, sedative and hypnotic, liver protection and diuretic, insecticidal and antibacterial activities, and have good application prospects in many fields. Hemerocallis ketone is an isoflavone compound derived from Hemerocallis minor Mill. and Hemerocallis citrina Baroni plants. Animal experimental studies have shown that it has a diuretic effect.

[0005] Compounding saponin alcohol with hemerocallis ketone and applying them as pesticide adjuvants in pesticide products can help promote the attachment of pesticides to plant leaves or to the surface of insects. It has a good synergistic effect when mixed with pesticides. In addition, since the surface tension and interfacial tension of plant-derived surfactants are relatively low, they are biodegradable in the soil, and can complex and chelate harmful substances such as heavy metals and nitrites, which can effectively reduce pesticide residues in the soil. Summary of the invention

[0006] The invention aims at the shortcomings of plant saponin and organosilicon surfactant, that is, the penetration effect is not obvious and the cost is too high when used as a single agent, and proposes a pesticide synergistic auxiliary agent which has low production cost, good penetration effect on plant or insect epidermis, obvious pesticide synergistic effect and is environmentally friendly.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A pesticide synergistic and residue-reducing adjuvant, comprising hemerocallis ketone and saponin alcohol; the mass ratio of hemerocallis ketone to saponin alcohol is (1-9):(9-1).

[0009] Optionally, the mass ratio of hemerocallis ketone to saponin alcohol is (1-2.5):(1-2).

[0010] Optionally, the mass ratio of hemerocallis ketone to saponin alcohol is 1:1.5.

[0011] A pesticide synergistic and residue-reducing adjuvant is composed of the following effective ingredients in percentage by mass: 1% to 30% hemerocallis ketone, 1% to 20% saponin alcohol, 1% to 10% emulsifier, and 10% to 44% solvent, the sum of the percentages of the above raw materials being 100%.

[0012] Optionally, the content of hemerocallis ketone is 5% to 25%, and the content of saponin alcohol is 10% to 15%.

[0013] Optionally, the content of hemerocallis ketone is 9.8%, and the content of saponin alcohol is 14.9%.

[0014] Optionally, the content of hemerocallis ketone is 24.9%, and the content of saponin alcohol is 9.9%.

[0015] Optionally, the content of hemerocallis ketone is 4.99%, and the content of saponin alcohol is 10%.

[0016] Use of any pesticide synergy-enhancing and residue-reducing adjuvant of the present invention in preparing pesticides.

[0017] A pesticide, comprising an insecticide, a fungicide or a herbicide, and at the same time any one of the pesticide synergy-enhancing and residue-reducing adjuvants of the present invention;

[0018] The content of the pesticide synergistic enhancement and residue reduction adjuvant in the pesticide is 5% to 10%.

[0019] The insecticide comprises imidacloprid, avermectin, phoxim, highly effective cyhalothrin and / or chlorantraniliprole;

[0020] The bactericidal drug comprises pyraclostrobin, tebuconazole and / or boscalid;

[0021] The herbicide comprises benzylsulfuron-methyl and / or glyphosate.

[0022] Beneficial effects of the present invention:

[0023] The experiment proved that the synergistic pesticide composition composed of pesticides with hemerocallis ketone and saponin alcohol as the main ingredients has a good synergistic effect and can effectively reduce the pesticide residues in the soil. The main ingredients hemerocallis ketone and saponin alcohol have a wide range of sources, and the synergistic pesticide composition is highly efficient, low-toxic, and environmentally friendly, and has great development and application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 This is a survey result of the number of weeds after applying 30% glyphosate aqueous solution. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below through examples and tests provided by the inventor.

[0027] During the research process on saponin water extract, the applicant's scientific researchers found after long-term research that hemerocallis ketone and saponin alcohol have a synergistic effect on pesticide varieties when used as adjuvants, can reduce the amount of pesticides used, and effectively reduce pesticide residues in the soil. They proposed a pesticide synergistic and residue-reducing adjuvant and its application.

[0028] A pesticide synergistic and residue-reducing adjuvant, comprising hemerocallis ketone and saponin alcohol; the mass ratio of hemerocallis ketone to saponin alcohol is (1-9):(9-1).

[0029] In the present invention, the mass ratio of hemerocallis ketone to saponin alcohol is (1-2.5):(1-2).

[0030] In the present invention, the mass ratio of hemerocallis ketone to saponin alcohol is 1:1.5.

[0031] A pesticide synergistic and residue-reducing adjuvant is composed of the following effective ingredients in percentage by mass: 1% to 30% hemerocallis ketone, 1% to 20% saponin alcohol, 1% to 10% emulsifier, and 10% to 44% solvent, the sum of the percentages of the above raw materials being 100%.

[0032] In the present invention, the content of hemerocallis ketone is 5% to 25%, and the content of saponin alcohol is 10% to 15%.

[0033] In the present invention, the content of hemerocallis ketone is 9.8%, and the content of saponin alcohol is 14.9%.

[0034] In the present invention, the content of hemerocallis ketone is 24.9%, and the content of saponin alcohol is 9.9%.

[0035] In the present invention, the content of hemerocallis ketone is 4.99%, and the content of saponin alcohol is 10%.

[0036] Application of any pesticide synergistic and residue-reducing adjuvant of the present invention in preparing pesticides.

[0037] A pesticide contains insecticides, fungicides or herbicides, and at the same time contains any pesticide synergistic and residue-reducing adjuvant of the present invention; the content of the pesticide synergistic and residue-reducing adjuvant in the pesticide is 5% to 10%; the insecticide contains imidacloprid, avermectin, phoxim, high-efficiency cyhalothrin and / or chlorfenapyr; the fungicide contains pyraclostrobin, tebuconazole and / or boscalid; the herbicide contains benzylsulfuron-methyl and / or glyphosate.

[0038] The emulsifier can be selected from triphenyl ethyl phenol polyoxyethylene polyoxypropylene ether (1601#), styrylphenol polyoxyethylene ether (Agricultural milk No. 600) or alkylphenol and ethylene oxide condensate (OP-10).

[0039] The solvent can be selected from ethyl acetate or sec-butyl acetate.

[0040] The adjuvant is first prepared according to the formula ratio of the synergistic and residual reduction adjuvant, and then combined with the pesticide variety to form a synergistic pesticide combination. The pesticide synergistic and residual reduction adjuvant prepared by the present invention can be combined with different varieties of pesticides to form a synergistic pesticide composition, and applied to the field to prevent and control agricultural pests and diseases.

[0041] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0042] Example 1: Preparation of synergistic and residue-reducing auxiliary agent PA-1 composed of 10% hemerocallis ketone and 15% saponin alcohol (the content of saponin alcohol is 1.5 times that of hemerocallis ketone)

[0043] Accurately weigh 13.3 kg of 75% hemerocallis ketone mother liquor and 37.5 kg of 40% saponin alcohol. Thoroughly mix the two active drug solutions in the mixing tank (1). Add 6 kg of emulsifier 1601# to the mixing tank (2), mix and then add 43.2 kg of ethyl acetate and mix thoroughly. Transfer all the kilograms of material in the mixing tank (2) into the mixing tank (1) through the pipeline, seal the tank mouth and start the mixer to stir for 1 hour. Prepare 100 kg of hemerocallis ketone and saponin alcohol combination auxiliary agent PA-1. Sampling analysis shows that the hemerocallis ketone content in the product is about 9.8%, and the saponin alcohol content is 14.9%, that is, it becomes a 25% synergistic and residue reduction auxiliary agent PA-1, and the product is divided into double-barrier plastic bottles, each bottle containing 500 mL of medicine.

[0044] Example 2: Preparation of synergistic and residue-reducing auxiliary agent PA-2 composed of 25% hemerocallis ketone and 10% saponin alcohol (hemerocallis ketone is 2.5 times the amount of saponin alcohol)

[0045] Accurately weigh 33.3 kg of 75% hemerocallis ketone mother liquor and 25 kg of 40% saponin alcohol. Mix the two active liquids thoroughly in the mixing tank (1). Add 5 kg of emulsifier 1601# to the mixing tank (2), add 10 kg of ethyl acetate after mixing, and mix thoroughly. Transfer all the kilograms of material in the mixing tank (2) into the mixing tank (1) through the pipeline, add 26.7 kg of deionized water to make up to 100 kg, seal the tank mouth, start the mixer and stir thoroughly for 1 hour. Prepare 100 kg of microemulsion product of hemerocallis ketone and saponin alcohol composition. Sampling analysis shows that the content of hemerocallis ketone in the product is about 24.9%, and the content of saponin alcohol is 9.9%, that is, it becomes 35% synergist and residue reducer PA-2, and the product is divided into double-barrier plastic bottles, each bottle containing 500 mL of medicine.

[0046] Example 3: Preparation of 5% hemerocallis ketone and 10% saponin alcohol composition synergistic residue reduction aid PA-3 (saponin alcohol is twice the amount of hemerocallis ketone)

[0047] Accurately weigh 6.66 kg of 75% hemerocallis ketone technical drug and 25 kg of 40% saponin alcohol, and stir the two in a mixing tank. Then quantitatively add 10 kg of agricultural emulsifier 1601#, 20 kg of ethyl acetate, 20 kg of vegetable oil, and 18.34 kg of water to the mixing tank, stirring while adding. After all the materials are added, continue to stir with a mixer for 1 hour. The amount of hemerocallis ketone in the sampled product is 4.99%, and the content of saponin alcohol is 10%. Finally, a total of 100 kg of PA-3, a synergistic and residue-reducing auxiliary product with a total content of 15% of effective components, is obtained. The product is packaged in a 500mL plastic bottle with a sealed bottle mouth.

[0048] Example 4: Test on the synergistic effect of the combination of hemerocallis ketone and saponin alcohol on the aphid-killing activity of imidacloprid using the residue-reducing adjuvant PA-1

[0049] The toxicity against wingless adult aphids was tested by the spray method recommended by FAO. The specific operation is as follows: Take a large bean leaf with no pesticide or insects of the same size and put it in an empty culture dish, place it under a Potter spray tower and spray 1 mL of the agent on both sides, take it out after settling for 5 seconds and let it dry naturally, then put it in a culture dish with a diameter of 9 cm and filter paper, wrap the petiole with water-soaked cotton wool or use a dropper to add water until the filter paper is just completely wet, pick at least 30 healthy pea aphids (wingless adult aphids) of basically the same size with a brush and put them in an empty culture dish, place it under a Potter spray tower and spray 2 mL of the agent, take it out after settling for 5 seconds, and place the aphids in the culture dish with the bean leaves, repeat each treatment 3 times, and 30 test insects in each repeat. When determining the toxicity, set 5 to 7 concentrations of the agent. After treatment, place the insects in a constant temperature and light incubator at (25±1)℃, relative humidity 80%±5%, and a light cycle of L / D=16 / 8h. After 24h and 48h of treatment, check the treated insects. The death standard is immobility when touched. Count the number of deaths in each treatment, and calculate the mortality rate and corrected mortality rate with the following formula. The control treatment mortality rate is below 20% for a valid test. Convert the corrected mortality rate into a mortality-probability value, obtain the toxicity regression equation, and calculate the LC according to the toxicity regression line. 50 .

[0050] Mortality rate (%) = number of dead insects / total number of test insects × 100;

[0051] Corrected mortality rate (%) = (mortality rate of treatment group - mortality rate of control group) / (1 - mortality rate of control group) × 100;

[0052] On this basis, the activity coefficient is calculated using the equivalent dose comparison method. The calculation formula is as follows:

[0053]

[0054] The criteria for determining whether there is synergism: activity coefficient = 1 indicates no synergism; activity coefficient > 1 indicates synergism; activity coefficient < 1 indicates antagonism.

[0055] Table 1 Results of the synergistic activity test of PA-1 plus imidacloprid against aphids (24h)

[0056]

[0057]

[0058] From the data in Table 1, it can be seen that the activity coefficient of 20% imidacloprid soluble concentrate + 5% PA-1 is 1.49, which is better than the activity coefficient of 20% imidacloprid soluble concentrate + 5% saponin alcohol, and both are greater than 1, indicating that the synergist PA-1 has a synergistic effect on imidacloprid when the addition amount is 5%.

[0059] Example 5: Test on the synergistic effect of the combination of hemerocallis ketone and saponin alcohol on the killing of armyworms by the residue-reducing adjuvant PA-1

[0060] The toxicity against the third-instar armyworm was tested by the insect immersion method. The specific method is as follows: spread the filter paper in a culture dish with a diameter of 9 cm, and add water with a dropper until the filter paper is just wet. Pick healthy third-instar armyworms of the same size and immerse them in the test agent for 5 seconds, then use absorbent paper to absorb the excess liquid and place them in the culture dish. Cut fresh corn leaves into small leaf discs (1 cm × 1 cm) and place them in the culture dish with the test insects. Repeat 3 times for each treatment, with 20 test insects in each repeat. When determining the toxicity, set 5 to 7 concentrations of the agent. After the treatment, place the culture dish in the insect breeding room for culture, with a temperature of (25 ± 1) ° C and a humidity of 70% ± 5%. Check the results at 24h, 48h and 72h, and count the number of dead insects (the death standard is that the test insects cannot eat and are immobile when touched).

[0061] Table 2 The results of the synergistic activity test of PA-1 plus phoxim on killing armyworms (24h)

[0062]

[0063] According to the data in Table 2, the activity coefficient of 40% phoxim EC + 5% PA-1 is 1.50, which is better than the activity coefficient of 40% phoxim EC + 5% saponin alcohol, and both are greater than 1, indicating that the synergist PA-1 has a synergistic effect on phoxim when added at a dosage of 5%.

[0064] Example 6: Test on the synergistic effect of the combination of hemerocallis ketone and saponin alcohol on the residue reduction adjuvant PA-1 on chlorantraniliprole in killing Plutella xylostella

[0065] Contact activity, using the insect immersion method, select healthy 3rd instar larvae of the same age, clamp them with tweezers and put them into the dilution of the test sample, soak for 5 seconds, take them out, absorb the excess liquid with absorbent paper, and place them in a 9cm culture dish at room temperature for moisturizing culture. Each treatment is repeated 3 times, with 10 heads per repetition. The control is treated with acetone and distilled water mixed at a ratio of 1:19 (0.1% soil temperature -80). Check the death situation after 48 hours, calculate the mortality rate, and calculate the corrected mortality rate.

[0066] Table 3 Synergistic activity test results of PA-1 plus chlorantraniliprole on killing Plutella xylostella (24h)

[0067]

[0068] The activity coefficient of 5% chlorantraniliprole suspension + 5% PA-1 is 1.59, which is better than the activity coefficient of 5% chlorantraniliprole suspension + 5% saponin alcohol, and both are greater than 1, indicating that the synergist PA-1 has a synergistic effect on chlorantraniliprole when the addition amount is 5%.

[0069] Example 7: Test on the synergistic effect of the combination of hemerocallis ketone and saponin alcohol on the activity of avermectin in killing Oxalis sabdariffa and spider mites

[0070] The acaricidal activity was tested by the slide immersion method (FAO). The test agent was dissolved in a suitable solvent, and then diluted with a 0.5% Tween-80 aqueous solution to set 5 to 7 concentrations. First, prepare a sufficient number of clean slides, stick double-sided tape on one side of them, select healthy and active mites of the same size from the test insects, pick them up with a brush and stick their backs on the double-sided tape, and ensure that the mite's feet can move. Stick 30 adult insects on each slide, leave them for 4 hours, observe them under a microscope, remove inactive and dead mites, and add 30 mites again. Immerse the glass slide with the mites stuck on it in the prepared drug solution and shake it continuously for 5 to 7 seconds before taking it out. Use absorbent paper to absorb the excess drug solution on the glass slide and the insect body and place it in an incubator at 25±2℃. Use a Tween-80 aqueous solution without drug solution as a control. Repeat each concentration three times. Check whether the test insects are dead at 24h, 48h and 72h respectively. Count the number of dead insects. The statistical method is to observe under a dissecting microscope and touch the insect body with a brush. If it continues to move, it is judged as dead. Calculate the mortality rate and adjusted mortality rate, and use the probability value analysis method to obtain the toxicity curve and LC 50 value.

[0071] Table 4 Synergistic activity test results of PA-1 plus avermectin on killing Oxalis serrata such as spider mites (24h)

[0072]

[0073]

[0074] From the above table, the activity coefficient of 5% avermectin emulsifiable concentrate + 5% PA-1 is 1.50, which is equivalent to the activity coefficient of 5% avermectin emulsifiable concentrate + 5% saponin alcohol, and both are greater than 1, indicating that the synergist PA-1 has a synergistic effect on avermectin when the addition amount is 5%.

[0075] Example 8: Field synergistic test of the product PA-1 of the present invention for high-efficiency cyhalothrin

[0076] The field test was conducted in corn fields in Yangling District, Xianyang City, Shaanxi Province. The test of young larvae (1-3 instars) of fall armyworm was conducted on May 10, 2022, and the test of older larvae (4-6 instars) was conducted on May 20. Isolation belts were set up in the two test corn fields. The test corn was in the trumpet stage.

[0077] Spray application: According to the recommended method of use in the pesticide manual, 3 different concentrations of 25g / L cyhalothrin were prepared at 40, 48, and 56g / hectare, and the same dose was added with 5% PA-125g / L cyhalothrin for comparison. Spray application, water consumption was 675kg / ha, the agent was diluted according to the experimental design and sprayed evenly, and the control plot was sprayed with clean water. Each treatment was set up with 3 replicates, and the plot area was 30m 2 .

[0078] Before application, each plot was sampled at 6 points in a "Z" shape, with 5 corn plants selected at each point. A total of 30 plants were surveyed at the 6 points, repeated 3 times, and a total of 90 corn plants were surveyed in each treatment. Hanging tags were used as markers to count and record the number of young larvae (1-3 instars) and old larvae (4-6 instars) on the marked corn. After application, the insect population was surveyed in the same way at 1d, 3d, and 7d, and the damage and growth of other plants in the plot were observed at the same time. According to the survey results, the insect population reduction rate and control effect were calculated according to the "Guidelines for Field Efficacy Tests of Pesticides", and one-way analysis of variance was performed using SPSS 22.0 software.

[0079] Table 5 Synergistic effect of PA-1 on high-efficiency cyhalothrin in controlling fall armyworm

[0080]

[0081]

[0082] The results showed that the combination of hemerocallis ketone and saponin alcohol synergistic and residue-reducing adjuvant PA-1 had a good synergistic effect on 25g / L highly effective chlorfenapyr. When the addition amount was 5%, its control effect on fall armyworm was significantly better than that of the unadded agent at the same dose (Table 5).

[0083] Example 9: Test on the synergistic effect of the product PA-2 of the present invention on the fungicide pyraclostrobin

[0084] The synergistic effect of PA-2, a combination of hemerocallis ketone and saponin alcohol, on wheat powdery mildew was tested in the Caoxinzhuang test field of Northwest Agriculture and Forestry University in Yangling District, Xianyang City, Shaanxi Province. The dosage of 30% pyraclostrobin suspension was 66.6g / 667m 2 5% PA-2 was added to compare the control effect. Each treatment was repeated 3 times. The area of ​​the plot was about 30m 2 . Leave protective rows of more than 5m in plots near ridges and land edges. The plots are randomly arranged. The first application of pesticides was on April 20, 2021 (the early stage of wheat powdery mildew), and the pesticide machine was an electric sprayer. Plastic sheets were used to fence off when spraying the corresponding pesticide solution in each plot. The second application of pesticides was carried out 7 days later, and the treatment was the same as the first time.

[0085] Before applying the pesticide, the wheat powdery mildew condition in each treatment area was investigated, and the disease condition in each treatment area was investigated again 10 days after the second application of the pesticide. Samples were taken at 5 points on the diagonal of each plot, and 100 plants were investigated at each point. The disease condition of the flag leaf and the first leaf under the flag leaf of each plant was investigated. The disease grade was recorded, and the disease index and control effect were calculated. Disease grading standard: grade 0, no disease; grade 1, the area of ​​lesions accounts for less than 5% of the entire leaf area; grade 3, the area of ​​lesions accounts for 6% to 15% of the entire leaf area; grade 5, the area of ​​lesions accounts for 16% to 25% of the entire leaf area; grade 7, the area of ​​lesions accounts for 26% to 50% of the entire leaf area; grade 9, the area of ​​lesions accounts for more than 50% of the entire leaf area. Duncan's new multiple range method was used for statistical analysis of the test data.

[0086]

[0087] Control effect (%) = (1-CK0 × PT1 / CK1 × PT0) × 100;

[0088] Wherein, CK0 and CK1 are the disease indexes of the blank control area before and after spraying water, respectively; PT0 and PT1 are the disease indexes of the drug-treated area before and after applying the drug, respectively.

[0089] Table 6 Synergistic effect of PA-2 on pyraclostrobin in controlling wheat powdery mildew

[0090]

[0091] The results showed that the addition of PA-2 had a significant synergistic effect on 30% pyraclostrobin suspension concentrate, and its control effect on wheat powdery mildew was better than that without the addition of the agent.

[0092] Example 10: Field test on the use of the product PA-2 of the present invention for enhancing the efficacy of fungicides tebuconazole and boscalid in controlling wheat stripe rust

[0093] The experiment was conducted on April 25, 2022 in Yangling District, Xianyang City, Shaanxi Province. The soil fertility in the area is good and the management and cultivation conditions are consistent. A 3WBS-16 sprayer was used for spraying, and the drug was diluted twice, with a liquid volume of 450kg / hm 2 Each treatment was repeated 4 times, and the plots were arranged in random blocks with a plot area of ​​20m 2 7 days after the application of pesticides, the wheat leaf color and plant height in the treatment areas were the same as those in the water control area, and no pesticide damage or abnormal growth and development was found.

[0094] Table 8 Control effect of tebuconazole and boscalid on wheat stripe rust

[0095]

[0096]

[0097] The results showed that the addition of 5% PA-3 could effectively improve the control effect of tebuconazole and boscalid on wheat stripe rust.

[0098] Example 11: Field test of the product PA-3 of the present invention for enhancing the effect of herbicide glyphosate

[0099] The combination of hemerocallis ketone and saponin alcohol, the synergistic and residue-reducing adjuvant PA-3, plus glyphosate was tested for the synergistic effect on weeds in corn fields. The monocotyledonous weeds were mainly crabgrass, barnyard grass, and foxtail grass; the dicotyledonous weeds were mainly purslane and Amaranthus retroflexus. The test was conducted in the corn fields of Cuixigou Village, Yangling District, Xianyang City, Shaanxi Province.

[0100] 30% glyphosate solution and 10% PA-3 30% glyphosate solution were applied once after summer corn was sown and before seedlings. A backpack compression sprayer was used for spraying, and the test dosage was 120g / 667m 2 The blank control was sprayed with water, and the method was the same as the pesticide spraying. Manual weeding treatment was carried out on the day of pesticide application.

[0101] Survey sampling method: 60 days after application, sampling was carried out at 4 diagonal points within the plot, with a depth of 0.25 m per point. 2 , record the types and numbers of weeds in the sample plot.

[0102] Results Figure 1 The results showed that adding PA-3 at a rate of 10% while applying glyphosate could effectively reduce the number of monocotyledonous and dicotyledonous weeds in corn fields.

[0103] Example 12: Field test on the use of the product PA-3 of the present invention for enhancing the efficacy of the herbicide bensulfuron-methyl in controlling broadleaf weeds

[0104] The synergistic effect of PA-3, a combination of hemerocallis ketone and saponin alcohol, and benzylsulfuron-methyl on broadleaf weeds in wheat fields was tested. The test was arranged in the experimental field of Northwest A&F University, Yangling District, Xianyang City, Shaanxi Province. The test soil was yellow-brown soil, the pH value was slightly acidic, and the fertility was medium to high. The sowing was on October 8, 2022. The variety was Xinong 511, and the seed rate was 300kg / hm2. At the time of the test, wheat had 2 to 3 tillers, and broadleaf weeds had 3 to 6 leaves. The main varieties of broadleaf weeds were cleavers, shepherd's purse, and giant vetch.

[0105] Table 8 Effect of 10% benzylsulfuron WP on controlling broadleaf weeds Shepherd's purse in wheat fields

[0106]

[0107]

[0108] The results showed that the addition of PA-3 had a synergistic effect on the control of the broad-leaved weed Shepherd's Purse in wheat fields with 10% benzylsulfuron-methyl wettable powder, and its control efficacy at 30d, 60d and 90d was better than that without the addition of the agent.

[0109] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0110] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0111] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A pesticide synergistic and residue-reducing adjuvant, characterized in that: The pesticide synergistic and residue-reducing adjuvant is composed of hemerocallis ketone, saponin alcohol, an emulsifier and a solvent; The mass ratio of hemerocallis ketone to saponin alcohol is (1-9): (9-1); The emulsifier is triphenylethylphenol polyoxyethylene polyoxypropylene ether; the solvent is ethyl acetate; Calculated by mass percentage, in the pesticide synergistic and residue-reducing adjuvant, hemerocallis ketone 1% to 30%, saponin alcohol 1% to 20%, emulsifier 1% to 10%, solvent 10% to 44%, and the sum of the percentages of the above raw materials is 100%.

2. The pesticide synergy-enhancing and residue-reducing adjuvant according to claim 1, characterized in that: The mass ratio of hemerocallis ketone to saponin alcohol is (1-2.5): (1-2).

3. A pesticide synergistic and residue-reducing adjuvant, characterized in that: It is composed of the following active ingredients by mass percentage: Hemerocallis ketone 1% to 30%, saponin alcohol 1% to 20%, emulsifier 1% to 10%, solvent 10% to 44%, the sum of the percentages of the above raw materials is 100%; The emulsifier is triphenylethylphenol polyoxyethylene polyoxypropylene ether; the solvent is ethyl acetate.

4. Use of the pesticide synergy-enhancing and residue-reducing adjuvant according to any one of claims 1 to 3 in the preparation of pesticides.

5. A pesticide, characterized in that: Contains insecticides, fungicides or herbicides, and also contains the pesticide synergistic and residue-reducing adjuvant according to any one of claims 1 to 3; The content of the pesticide enhancement and residue reduction adjuvant in the pesticide is 5% to 10%; The insecticide comprises imidacloprid, avermectin, phoxim, highly effective cyhalothrin and / or chlorfenapyr; The bactericidal drug comprises pyraclostrobin, tebuconazole and / or boscalid; The herbicide comprises benzylsulfuron-methyl and / or glyphosate.

Images