Bird repelling composition containing citronellol as well as preparation method and application of bird repelling composition

Abstract

The invention discloses a bird repelling composition containing citronellol and a preparation method and application thereof, and relates to the field of pesticides, the effective components of the bird repelling composition comprise methyl anthranilate and citronellol, and the weight ratio of methyl anthranilate to citronellol is 9: 1-1: 9. According to the bird repelling composition disclosed by the invention, the methyl anthranilate and the citronellol are compounded, so that the bird repelling composition has a remarkable synergistic effect and an outstanding repelling effect on various birds.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pesticides, in particular to a citronellol-containing bird repellent composition and a preparation method and application thereof. BACKGROUND

[0002] With the improvement of ecological environment and the increase of bird population, agricultural bird damage problems are becoming increasingly serious. Birds peck at seeds, seedlings and mature fruits, causing significant economic losses to field crops and orchards. Current bird repellent methods include physical and chemical repellents, but traditional methods have limited effect, short duration and are cumbersome to operate. Chemical repellents have gradually become the mainstream, but most products on the market have unclear ingredients, short duration and insufficient safety. Existing bird repellent ingredients such as methyl anthranilate and cinnamaldehyde have some effect, but single use can easily lead to increased bird adaptability and decreased repellent effect. In addition, existing products have a narrow application range and are difficult to achieve efficient and long-lasting repellent effect on various birds and crops. Therefore, there is an urgent need to find a safe, environmentally friendly and effective bird repellent composition.

[0003] Methyl anthranilate is a colorless to pale yellow liquid with blue fluorescence and orange flower fruit aroma, with a CAS of 134-20-3. It is widely used in daily and edible essences. Citronellol is a monoterpene compound and the most commonly used spice, with a CAS of 106-22-9; 7540-51-4. Natural essential oils contain dextro- or levorotatory citronellol and its racemate. Dextro-citronellol mainly exists in oil of neroli, citronella oil and lemon eucalyptus oil. There is no known mixture of methyl anthranilate and citronellol for bird repellent. SUMMARY

[0004] Invention objectives To overcome the above shortcomings, the present application provides a citronellol-containing bird repellent composition and a preparation method and application thereof. The present application found that methyl anthranilate and citronellol have significant synergistic effect when mixed at a certain ratio, and the repellent effect is better than that of a single agent. The composition is safe, environmentally friendly, has a wide range of applications and has good market prospects.

[0005] Solution To achieve the object of the present application, the technical solutions adopted by the present application are as follows: In a first aspect, the present application provides a bird repellent composition, wherein the effective components of the bird repellent composition include methyl anthranilate and citronellol, and the weight ratio of the methyl anthranilate to the citronellol is 9:1 to 1:9.

[0006] Further, the weight ratio of the methyl anthranilate and citronellol is 9:1 to 2:8, optionally 9:1 to 3:7, optionally 8:2 to 4:6, optionally in a range between 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8 or any two values therebetween.

[0007] In a second aspect, there is provided a bird repellent agent, which comprises the bird repellent composition of the first aspect as an effective ingredient, and optionally further comprises a warning color and other pesticide-acceptable auxiliary agent, and optionally the effective ingredient accounts for 1-40% of the total weight of the bird repellent agent, optionally 5-20%.

[0008] Further, the bird repellent agent is in the form of one or more of granules, seed treatment, emulsifiable concentrate, and microcapsule suspension; Optionally, the other pesticide-acceptable auxiliary agent is selected from one or more of wetting dispersant, emulsifier, solvent, co-solvent, antifreezing agent, stabilizer, preservative, thickening agent, film-forming agent, wall material, binding agent, antifoaming agent, acid-adjusting medium, base-adjusting medium, and solid inert carrier; Optionally, the warning color is selected from one or more of fast red, permanent red F2R, carmine, acid red, and magenta; Optionally, the wetting dispersant is selected from one or more of polycarboxylate, fatty alcohol polyoxyethylene ether, sodium dodecyl benzene sulfonate, lignin sulfonate, alkyl naphthalene sulfonate formaldehyde condensate, alkyl phenol polyoxyethylene ether formaldehyde condensate sulfate, alkyl naphthalene sulfonate, alkyl benzene sulfonate, polyoxyethylene ether phosphate, styryl phenol polyoxyethylene ether phosphate, alkyl / aryl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether, alkenyl sulfonate, polyether sulfate, alkyl sulfonate; Optionally, the emulsifier is selected from one or more of castor oil polyoxyethylene ether, alkyl phenol ether phosphate, glycerol oleate, polyethylene glycol oleate, polyglycerol oleate, sorbic anhydride fatty acid ester polyether, oleic acid polyether, isomeric alcohol ether, tristyryl phenol polyoxyethylene ether, alkyl phenol formaldehyde resin polyoxyethylene ether, alkyl aryl polyoxyethylene polyoxypropylene ether, castor oil polyoxyethylene ether, block polyether, alkyl phenol formaldehyde resin polyoxyethylene ether sodium sulfate, calcium dodecyl benzene sulfonate, tristyryl phenol polyoxyethylene ether phosphate ammonium salt, alkyl alcohol ether phosphate, alkyl phenol ether phosphate, alkyl naphthalene sulfonate, alkyl succinate sulfonate; Optionally, the film-forming agent is selected from one or more of acrylate, acrylate resin polyurethane copolymer resin, carboxymethyl cellulose, methyl cellulose, polyvinyl alcohol; Optionally, the antifoaming agent is selected from one or more of organosilicon, silicone; Optionally, the antifreezing agent is selected from one or more of ethylene glycol, glycerol, propylene glycol, isopropyl alcohol; Optionally, the thickening agent is selected from one or more of white carbon black, xanthan gum, magnesium aluminum silicate, gum arabic, polyvinyl alcohol; Optionally, the solvent is selected from one or more of water, dimethylbenzene, anhydrous ethanol, dimethylformamide, methyl oleate, dimethyl carbonate, trimethylbenzene, methyl-pyrrolidone; Optionally, the wall material is selected from one or more of urea-formaldehyde resin, melamine resin, epoxy resin, polyurea, polyurethane.

[0009] Further, the dosage form is granules, which comprises raw materials in the following weight parts: methyl anthranilate 1-15 parts, citronellol 1-15 parts, warning color 1-5 parts, binder 0.5-5 parts, carrier 80-90 parts; Optionally, it comprises raw materials in the following weight parts: methyl anthranilate 1.2-9.6 parts, citronellol 2.4-10.8 parts, warning color 1-5 parts, binder 0.5-5 parts, carrier 80-90 parts; Optionally, it comprises raw materials in the following weight parts: methyl anthranilate 4.8-9.6 parts, citronellol 2.4-7.2 parts, warning color 1-5 parts, binder 0.5-5 parts, carrier 80-90 parts; Optionally, it comprises raw materials in the following weight parts: methyl anthranilate 6-9.6 parts, citronellol 2.4-6 parts, warning color 1-5 parts, binder 0.5-5 parts, carrier 80-90 parts; Optionally, it comprises raw materials in the following weight parts: methyl anthranilate 6-9.6 parts, citronellol 2.4-6 parts, warning color 1-5 parts, binder 0.5-5 parts, carrier 80-90 parts; Optionally, it comprises raw materials in the following weight parts: methyl anthranilate 9.6 parts, citronellol 2.4 parts, warning color 1-5 parts, binder 0.5-5 parts, carrier 80-90 parts; Optionally, in the granules, the amount of warning color is 3-5 parts, optionally 3-4 parts; optionally the warning color is selected from one or more of fast red, permanent red F2R, carmine, acid red, or magenta; Optionally, in the granules, the amount of binder is 1.5-5 parts, optionally 1.5-3 parts; optionally the binder is selected from one or more of rosin ethanol solution-red, polyethylene glycol 400; Optionally, in the granules, the amount of carrier is 80-85 parts, optionally supplemented to 100 parts; optionally the carrier is selected from one or more of corn cob granules, quartz sand, and medical stone.

[0010] Furthermore, the formulation is a seed treatment emulsion, comprising the following raw materials in parts by weight: methyl anthranilate 1-5 parts, citronellol 0.5-5 parts, wetting and dispersing agent 5-15 parts, acrylate 1-5 parts, thickener 0-1 part, antifreeze agent 0-5 parts, defoamer 0-1 part, warning color 1-5 parts, and water 70-80 parts; Optionally, the raw materials include the following components by weight: methyl anthranilate 1-4.5 parts, citronellol 0.5-4 parts, wetting and dispersing agent 5-15 parts, film-forming agent 1-5 parts, thickener 0.1-1 part, antifreeze agent 1-5 parts, defoamer 0.1-1 part, warning color 1-5 parts, and water 70-80 parts; Optionally, the raw materials include the following components by weight: 2-4 parts of methyl anthranilate, 1-3 parts of citronellol, 5-15 parts of wetting and dispersing agent, 1-5 parts of film-forming agent, 0.1-1 part of thickener, 1-5 parts of antifreeze agent, 0.1-1 part of defoamer, 1-5 parts of warning color, and 70-80 parts of water; Optionally, the raw materials include the following components by weight: 4 parts methyl anthranilate, 1 part citronellol, 5-15 parts wetting and dispersing agent, 1-5 parts film-forming agent, 0.1-1 part thickener, 1-5 parts antifreeze agent, 0.1-1 part defoamer, 1-5 parts warning color, and 70-80 parts water. Optionally, the amount of wetting and dispersing agent in the seed treatment emulsion is 8-15 parts, optionally 10.7-15 parts, optionally including polycarboxylate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate, optionally the weight ratio of polycarboxylate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate is (2-6):(1-5):(1-5), optionally (4-6):(3-4):(2-4), optionally 4.6:3.2:2.7; Optionally, in the seed treatment emulsion, the amount of film-forming agent is 2 to 5 parts, and the film-forming agent is optionally selected from one or more of acrylate, styrene-acrylic emulsion, and waterborne polyurethane; Optionally, the amount of antifreeze in the seed treatment emulsion is 3 to 5 parts, and the antifreeze is selected from one or more of ethylene glycol, glycerol, and propylene glycol. Optionally, the amount of defoamer in the seed treatment emulsion is 0.4 to 1 part. Optionally, the defoamer is selected from one or more of organosilicon defoamers and polyether defoamers. Optionally, the amount of water used in the seed treatment emulsion is 75-80 parts, and optionally the water is made up to 100 parts.

[0011] Furthermore, the dosage form is a microcapsule suspension, comprising the following raw materials in parts by weight: 4-18 parts of methyl anthranilate, 2-16 parts of citronellol, 5-15 parts of emulsifier, 3-15 parts of organic solvent, 20-30 parts of wall material, 0-1 part of thickener, 0-8 parts of antifreeze, 0-1 part of preservative, and 30-40 parts of water; Optionally, the raw materials may include the following components by weight: 8-16 parts of methyl anthranilate, 4-12 parts of citronellol, 5-15 parts of emulsifier, 3-15 parts of organic solvent, 20-30 parts of wall material, 0.1-1 part of thickener, 1-8 parts of antifreeze, 0.1-1 part of preservative, and 30-40 parts of water; Optionally, the raw materials may include the following components by weight: 16 parts methyl anthranilate, 4 parts citronellol, 5-15 parts emulsifier, 3-15 parts organic solvent, 20-30 parts wall material, 0.1-1 part thickener, 1-8 parts antifreeze, 0.1-1 part preservative, and 30-40 parts water. Optionally, in the microcapsule suspension, the amount of emulsifier is 6-10 parts, or optionally 8-10 parts, and optionally includes castor oil polyoxyethylene ether and alkylphenol ether phosphate in a weight ratio of 1:(1-5), or optionally includes castor oil polyoxyethylene ether and alkylphenol ether phosphate in a weight ratio of 1:3. Optionally, the amount of organic solvent used in the microcapsule suspension is 5 to 10 parts, and the organic solvent is xylene. Optionally, the wall material in the microcapsule suspension is used in an amount of 25 to 30 parts, and the wall material is optionally selected from one or more of urea-formaldehyde resin, melamine resin, epoxy resin, polyurea, and polyurethane. Optionally, in the microcapsule suspension, the amount of thickener is 0.1 to 0.5 parts, or optionally 0.3 to 0.5 parts. Optionally, the thickener is selected from one or more of silica, xanthan gum, carboxymethyl cellulose, magnesium aluminum silicate powder, and organobentonite; or optionally, the thickener is selected from silica and xanthan gum. Optionally, the amount of antifreeze in the microcapsule suspension is 5 to 10 parts, and the antifreeze is selected from one or more of ethylene glycol, glycerol, and isopropanol. Optionally, the amount of preservative in the microcapsule suspension is 0.2 to 1 part. Optionally, the preservative is selected from one or more of Kathon, sodium benzoate, benzisothiazolinone, formaldehyde, polyoxymethylene, sodium citrate, sodium salicylate, potassium sorbate, and methylparaben. Optionally, the amount of water in the microcapsule suspension is 30-40 parts, and optionally the water is made up to 100 parts.

[0012] Thirdly, a method for preparing the bird repellent agent described in the second aspect is provided, comprising the following steps: first, methyl anthranilate, citronellol, and adjuvants are prepared according to the preparation method of the corresponding dosage form.

[0013] Fourthly, the application of the bird-repelling composition described in the first aspect or the bird-repelling agent described in the second aspect is provided for use on crops, buildings, gardens, and airports to protect plants, buildings, and aircraft from damage by birds, optionally including one or more of pigeons, white-rumped munias, sparrows, doves, and pheasants. Fifthly, a bird-repelling method is provided, wherein the bird-repelling composition described in the first aspect or the bird-repelling agent described in the second aspect is applied to the surface of an object by scattering, mixing with seeds, or spraying to achieve the purpose of repelling birds; optionally, when mixing with seeds, the dosage is 50-200 grams per 1 kg of seeds; optionally, when spraying, the dilution ratio is 100-300.

[0014] Advantages (1) The bird repellent composition of the present invention, through the combination of methyl anthranilate and citronellol, has a significant synergistic effect and outstanding repellent effect on a variety of birds.

[0015] (2) The composition of the present invention can be prepared as a seed treatment agent for seed dressing to protect the germination rate; it can also be prepared as a spray formulation or granules, which are flexible in their use and have a good repellent effect on various birds, reducing bird damage to mature rice ears, wheat ears, fruits and other mature fruits, and are suitable for different crops and scenarios. The bird repellent composition of the present invention does not harm birds and is in line with the development direction of green agriculture. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, and these illustrative examples are not intended to limit the embodiments. The term "illustrative" as used herein means "serving as an example, embodiment, or illustration." Any embodiment illustrated herein as "illustrative" is not necessarily to be construed as superior to or better than other embodiments.

[0017] Figure 1 This is a diagram showing the application of bird repellent pellets during the feeding of bird repellent pellets in Test Example 1. The pellets are distributed around the circular food container.

[0018] Figure 2 This is a comparison of the effects of Example 9 of the bird-repellent seed treatment emulsion in Test Example 2 and the blank control at 1 day and 3 days after sowing.

[0019] Figure 3 To compare the effects of Example 14 of the bird repellent spray in Test Example 3 with the blank control. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Furthermore, to better illustrate the present invention, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that the present invention can be practiced without certain specific details. In some embodiments, materials, methods, means, etc., well-known to those skilled in the art, are not described in detail in order to highlight the spirit of the present invention.

[0022] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprising" shall be understood to include the stated elements or components without excluding other elements or other components.

[0023] The present disclosure will be further illustrated by the following examples, but the present disclosure is not limited thereto.

[0024] The methyl anthranilate and citronellol of the present invention can both be obtained commercially.

[0025] All the additives used in this invention are commercially available. For example, rosin was purchased from Nanning Guanghe Chemical Co., Ltd., polycarboxylate was purchased from Jiangsu Qingyu Chemical Technology Co., Ltd., sun-resistant red safflower oil was purchased from Nanning Guanghe Chemical Co., Ltd., and rose extract was purchased from Hunan Muyang New Materials Co., Ltd.

[0026] All percentages in the formulations of this invention are by weight.

[0027] Experiment 1: Determination of Repellency Effect Test reagents: methyl anthranilate, citronellol.

[0028] Test birds: pigeons, fasted for 12 hours before feeding.

[0029] Indoor bioassay method: Methyl anthranilate and citronellol were mixed at weight ratios of 2:8, 3:7, 4:6, 5:5, 6:4, 8:2, and 1:9, respectively. Then, 1g of each bird repellent composition was weighed and mixed thoroughly with 2g of water, then mixed evenly with 100g of grains. The mixture was dried to prepare medicated grains. 20g of the medicated grains were placed in a 10cm diameter box and placed in a cage in a location where the test birds frequently ate (the birds were fasted for 12 hours before feeding). The amount of grain consumed (i.e., the amount of food consumed) was recorded every 2 hours. The repellency effect was calculated by correcting the consumption (i.e., the amount of food consumed) of the blank control.

[0030] The fundamental purpose of bird repellency is to reduce the intake of seeds (including grains), seedlings, and ripe fruits by birds, thereby achieving a repellency effect. To evaluate whether methyl anthranilate and citronellol have a synergistic effect, the inventors, through research and analysis, determined that the co-toxicity coefficient (CTC) calculated using the Sun Yunpei method could be used to evaluate the combined effect. Since the bird repellency effect is not to cause bird death, the "median lethal concentration" in the Sun Yunpei method was replaced with the "median repellency dose" (i.e., the drug concentration at which the repellency rate (%) is 50%). The toxicity index was then calculated using this method, and the relevant formula is as follows: Average intake = Weight of grains before processing - Weight of grains remaining after processing Refusal to eat rate (%) = 1 - (Average food intake in the treatment group / Average food intake in the blank control group) × 100 Rejection rate (%) = (Nullary feed intake - Treated feed intake) / Nullary feed intake × 100% The following indoor repellency test used Sun Yunpei's method to calculate the co-toxicity coefficient (CTC) to evaluate the effect of the combination. The drug concentration at which the avoidance rate (%) is 50% is called the "intermediate avoidance dose", denoted as EC50.

[0031] Toxicity Index TI(B) = EC50 of Standard Agent A / EC50 of Agent B * 100 (with methyl anthranilate as Standard Agent A and citronellol as Agent B). The measured toxicity index ATI(AB) = EC50 of standard agent A / EC50 of agent AB * 100 (Agent AB is a mixture of methyl anthranilate and citronellol). Theoretical toxicity index TTI(AB) = (Toxicity index of standard agent A TI(A) * Percentage of A in the mixture) + (Toxicity index of agent B TI(B) * Percentage of B in the mixture) Co-toxicity coefficient (CTC) = [Actual toxicity index (ATI) of the mixture / Theoretical toxicity index (TTI) of the mixture] × 100 The evaluation criteria are as follows: a co-toxicity coefficient ≥ 120 indicates a synergistic effect; a co-toxicity coefficient ≤ 80 indicates an antagonistic effect; and a co-toxicity coefficient < 120 indicates an additive effect.

[0032] The results are shown in Table 1.

[0033] Table 1. Determination of the repellency effect of different ratios of methyl anthranilate and citronellol on pigeons

[0034] The results in Table 1 show that methyl anthranilate and citronellol exhibit good repellency effects on birds in ratios of 9:1 to 1:9. They also show synergistic effects in ratios of 9:1 to 2:8, 9:1 to 3:7, 8:2 to 4:6, and any two of the following ratios: 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8.

[0035] The present invention will be further described in detail below through examples.

[0036] Test Example 1: Preparation Example and Repellency Effect of Bird Repellent Granules 1.1 The formulation composition of Examples 1-5 and Comparative Examples 1-2 (Table 2) Table 2. Formulation composition (by weight) of bird repellent granules in Examples 1-5 and Comparative Examples 1-2.

[0037] The bird repellent granules in the above embodiments and comparative examples were prepared according to the following process: Each material was weighed according to the specified proportions, then methyl anthranilate, citronellol, binder, warning colorant, and carrier were mixed, pulverized using an air jet mill, granulated using a granulator, dried, and sieved to obtain the granule product. The carrier can also be diatomaceous earth or activated carbon.

[0038] This granular adjuvant can be applied directly or mixed with fertilizer or soil. It achieves long-lasting repellency by slowly releasing bird-repelling active substances.

[0039] 1.2, Bird repellent effect determination test 1 1) Experimental animals and grouping Pigeons: There were 8 treatment groups, with 2 pigeons in each group, and each treatment group had 3 replicates.

[0040] White-rumped Munia: There were 8 treatment groups, with 5 birds in each group, and each treatment group had 3 replicates. Fast for 12 hours before feeding.

[0041] Test method: Method of preparation: Place 40g of grain in a 20cm circular bird feeder. Then place the feeder containing the grain in the center of a 30cm circular tray. Next, evenly sprinkle 20g each of Examples 1-5, Comparative Examples 1-5, and the blank control sample onto the circular tray, ensuring that the bird repellent granules surround the feeder. Figure 1 .

[0042] Feeding method: The treatment group's circular tray and the blank control sample's tray were placed simultaneously in one birdcage, 5 meters apart. Feeding was done once daily from 9:00 AM to 5:00 PM; the food box was not placed outside these hours. At 5:00 PM, the food box was removed, and the remaining grain feed was weighed and recorded, thus recording the amount of food consumed by the experimental birds in one day. The avoidance rate was calculated using the following formula, and the results are shown in Table 3.

[0043] The calculation formula is as follows: Feed intake = Feed input - Remaining amount Avoidance rate (%) = (Food intake of the control group - Food intake of the treatment group) / Food intake of the control group × 100% Table 3. Results of repellency tests on pigeons and white-rumped munias for each treatment

[0044] All results are averages of the groups.

[0045] The results showed that the content of the bird-repelling active ingredient in Examples 1-5 was the same as that in Comparative Examples 1 and 2 (all 12%), but the repellency rate of Examples 1-5 was increased by more than 10% compared with that of Comparative Examples 1 and 2. In particular, the improvement effect of Examples 2-3 was more significant, which further illustrates that methyl anthranilate and citronellol have a synergistic effect.

[0046] Test Example 2: Preparation Example and Repellency Effect of Bird-Repellent Seed Treatment Emulsion 2.1 The formulation composition of Examples 6-10 and Comparative Examples 3-4 (as shown in Table 4) Table 4. Formulation composition (by weight) of Examples 6-10 and Comparative Examples 3-4

[0047] The preparation process of the bird-repellent seed treatment emulsions in the above embodiments and comparative examples can be as follows: 1) Weigh out methyl anthranilate, citronellol, polycarboxylate (wetting and dispersing agent), fatty alcohol polyoxyethylene ether (wetting and dispersing agent), and sodium dodecylbenzenesulfonate (wetting and dispersing agent) according to the proportions in the table. After stirring and dispersing evenly, add the remaining materials and shear the mixture for 5 minutes to obtain a red milky, easily flowing liquid, which is the sample.

[0048] The prepared seed treatment emulsion can be mixed with seeds in a certain proportion, and the seed surface can be evenly coated with a film by stirring or using a special coating equipment. After air drying or fluidized bed drying, bird-repellent seeds are obtained. This bird-repellent composition can effectively protect seeds from being pecked by birds after sowing.

[0049] The prepared seed treatment emulsion can be mixed with seeds in a certain proportion, and the seed surface can be evenly coated with a film by stirring or using a special coating equipment. After air drying or fluidized bed drying, bird-repellent seeds are obtained. This bird-repellent composition can effectively protect seeds from being pecked by birds after sowing.

[0050] 2.2, Bird repellent effect determination test 2 Bird repellent agents: the agents prepared in Examples 6-10 of Table 4 and comparative examples 3-4, and blank control 1 (without the addition of bird repellent active ingredients, only containing adjuvants).

[0051] Experimental Methods: On March 20, 2025, the bird-repellent compositions of Examples 6-10, Comparative Examples 3-4, and the composition of Blank Control 1 were treated with seeds according to the dosages listed in the table. Sowing was then carried out on March 22, with isolation zones set up in each plot. Fixed sampling points were marked in each plot. The number of rice grains at each fixed point was investigated each time, and the number of remaining seeds was investigated at 1-day and 3-day intervals. The number of rice seeds at all sampling points in each plot was counted, and the feeding rate and repellency rate were calculated using the following formulas. The results are shown in Table 5.

[0052] The calculation formula is as follows: Feeding rate (%) = (Number of rice seeds at sowing - Number of rice seeds at the time of survey) / Number of rice seeds at sowing × 100; Avoidance rate (%) = (feeding rate in blank control area - feeding rate in experimental treatment area) / feeding rate in blank control area × 100.

[0053] Table 5. Repellent effect of each treatment on wild birds in direct-seeded rice fields

[0054] As shown in the table above, the bird repellents in Examples 6-10, when used in direct-seeded rice fields, exhibited significantly better repellency effects against wild birds than those in Comparative Examples 3-4. The repellency rates reached over 90% at 1 and 3 days after sowing. Example 9, in particular, demonstrated a more pronounced repellency effect, maintaining over 90% repellency at 1 and 3 days after sowing. Figure 2 As shown.

[0055] Test Example 3: Preparation Example and Repellency Effect of Bird Repellent Spray 3.1 The formulation composition of Examples 11-15 and Comparative Examples 5-6 (Table 6) Weigh each material according to the proportions in Table 6, then mix and stir the materials until homogeneous to form an emulsion, which is the bird repellent spray emulsion used for microcapsule preparation.

[0056] Table 6. Formulation composition (by weight) of Examples 11-15 and Comparative Examples 5-6

[0057] The above-mentioned bird repellent spray microcapsules can be prepared using the urea-formaldehyde resin complex coagulation method, specifically: 1) Preparation of wall material: Weigh urea and formaldehyde into a beaker (molar ratio of nurea:nformaldehyde = 1:71, the actual molar ratio is controlled between 1:1.6 and 1:1.9), add water and stir to dissolve to obtain a clear and transparent solution; use NaOH to adjust the pH of the prepared solution to between 8.5 and 9.5; then stir and keep the solution at 70°C for 1 hour to obtain a clear and transparent viscous wall material for later use.

[0058] 2) Weigh out methyl anthranilate and citronellol into beaker 1, then weigh out xylene and emulsifier and add them. Stir and mix to obtain a clear and transparent solution, which is the oil phase. 3) At room temperature, mix the prepolymer solution from step 1) with the oil phase solution and homogenize them under high-speed shearing to form a stable O / W emulsion, which is then poured into a reactor. While stirring, adjust the pH of the emulsion to between 2 and 3 using 5% HCl and react for 60 minutes. Then, start from room temperature and raise the temperature to 58°C (increasing by 5°C every 10 minutes), continuing to stir and react for another 60 minutes for solidification. Finally, adjust the pH of the reactants to between 6.5 and 7.5 using 20% ​​NaOH solution, ending the reaction. Finally, add the appropriate thickener, antifreeze, and preservative and stir until homogeneous to obtain bird-repellent spray microcapsules.

[0059] Control agent A : Weigh 6.67g of methyl anthranilate, 13.33g of cinnamonitrile, 5g of N,N-dimethylformamide, 25g of ethanol, 2.5g of sodium formaldehyde condensate alkylnaphthalene sulfonate, and 2.5g of castor oil polyoxyethylene ether. Mix these materials thoroughly to form a homogeneous liquid, which is the bird repellent spray A.

[0060] The bird repellent sprays listed in Table 6 above can be directly diluted with water and used for foliar or fruit spraying. They adhere to the crop surface, slowly release their effects, and provide sustained protection against birds pecking at the crop.

[0061] 3.2 Bird deterrence effect test 3 Test reagents: Bird repellent sprays prepared in Examples 11-15 Control agents: bird repellent spray prepared in comparative examples 5-6 and control agent A.

[0062] Experimental method: Each bird repellent spray was diluted with water at 300 times and 100 times respectively. Fields with severe bird damage were selected, and the spray solution was evenly sprayed onto the rice ears that were about to head using an electric sprayer. The field sprayed with water served as a blank control.

[0063] Seven days after spraying, samples were taken at five points, with ten rice panicles sampled at each point. The number of grains on each panicle and the number of grains damaged by birds were counted (the empty husks and small stalks left on the panicle stalks of the damaged grains were counted). Figure 3 (Blank control). Calculate the damage rate and bird deterrence effect using the following formulas.

[0064] Damaged grain rate (%) = (Total number of surveyed grains - Number of damaged grains) / Total number of surveyed grains × 100; Bird deterrence effect (%) = (damage rate in blank control area - damage rate in experimental treatment area) / damage rate in blank control area × 100.

[0065] Table 7. Field bird-repelling effects of different pesticide concentrations

[0066] As shown in Table 7 above, the citronellol-containing compound bird repellent spray of the present invention has a good repellent effect on wild birds in the field when diluted 100 times and 300 times. The comparative effect between Example 14 and the blank control is as follows. Figure 3 As shown, the composition of the present invention can effectively reduce the damage to grains caused by wild birds in the field.

[0067] In summary, the combination of methyl anthranilate and citronellol of the present invention has a prominent bird-repelling effect, and the synergistic effect is higher than that of methyl anthranilate and citronellol alone, with a longer and more lasting effect.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bird-repelling composition, characterized in that, The active ingredients of the bird repellent composition include methyl anthranilate and citronellol, wherein the weight ratio of methyl anthranilate to citronellol is 9:1 to 1:

9.

2. The bird-repelling composition according to claim 1, characterized in that, The weight ratio of methyl anthranilate to citronellol is 9:1 to 2:8, optionally 9:1 to 3:7, optionally 8:2 to 4:6, or optionally within the range of 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8, or any two of these values.

3. A bird repellent agent, characterized in that, The bird repellent composition according to claim 1 or 2 is used as the active ingredient, and optionally includes warning coloration and other pesticide-acceptable adjuvants. Optionally, the active ingredient accounts for 1 to 40% of the total weight of the bird repellent, and optionally 5 to 20%.

4. The bird repellent agent according to claim 3, characterized in that, The bird repellent is formulated as one or more of the following: granules, seed treatment emulsions, emulsifiable concentrates, and microcapsule suspensions. Alternatively, other adjuvants acceptable for pesticides may be selected from one or more of wetting and dispersing agents, emulsifiers, solvents, cosolvents, antifreeze agents, stabilizers, preservatives, thickeners, adsorbents, film-forming agents, wall materials, binders, defoamers, acid-adjusting media, alkali-adjusting media, and solid inert carriers; Optionally, the warning color is selected from one or more of the following: long-lasting red, permanent red F2R, carmine, acid red, magenta, or rose essence; Optionally, the wetting and dispersing agent is selected from one or more of the following: polycarboxylates, fatty alcohol polyoxyethylene ethers, sodium dodecylbenzene sulfonate, lignin sulfonates, alkyl naphthalene sulfonate formaldehyde condensates, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, alkyl naphthalene sulfonates, alkylbenzene sulfonates, polyoxyethylene ether phosphates, styrylphenol polyoxyethylene ether phosphates, alkyl / arylphenol polyoxyethylene ethers, fatty alcohol polyoxyethylene ethers, fatty acid polyoxyethylene ethers, alkenyl sulfonates, polyether sulfates, and alkyl sulfonates. Optionally, the emulsifier is selected from one or more of the following: castor oil polyoxyethylene ether, alkylphenol ether phosphate, glyceryl oleate, polyethylene glycol oleate, polyglyceryl oleate, sorbic anhydride fatty acid ester polyether, oleic acid polyether, isomeric alcohol ether, tristyrene phenol polyoxyethylene ether, alkylphenol formaldehyde resin polyoxyethylene ether, alkylaryl polyoxyethylene polyoxypropylene ether, castor oil polyoxyethylene ether, block polyether, sodium sulfate of alkylphenol formaldehyde resin polyoxyethylene ether, calcium dodecylbenzene sulfonate, ammonium salt of tristyrene phenol polyoxyethylene ether phosphate, alkyl alcohol ether phosphate, alkylphenol ether phosphate, alkylnaphthalene sulfonate, and alkyl succinate sulfonate. Optionally, the adsorbent is selected from diatomaceous earth and silica; Optionally, the film-forming agent is selected from one or more of acrylates, acrylic resin polyurethane copolymer resins, carboxymethyl cellulose, methyl cellulose, and polyvinyl alcohol; Optionally, the defoamer is selected from one or more of organosilicon and silicone; Optionally, the antifreeze is selected from one or more of ethylene glycol, glycerol, propylene glycol, and isopropanol; Optionally, the thickener is selected from one or more of silica, xanthan gum, magnesium aluminum silicate, gum arabic, and polyvinyl alcohol; Optionally, the solvent is selected from one or more of water, xylene, anhydrous ethanol, dimethylformamide, methyl oleate, dimethyl carbonate, trimethylbenzene, and methyl-pyrrolidone; Optionally, the wall material is selected from one or more of urea-formaldehyde resin, melamine resin, epoxy resin, polyurea, and polyurethane.

5. The bird repellent agent according to claim 3 or 4, characterized in that, The dosage form is granules, which include the following raw materials in parts by weight: methyl anthranilate 1-15 parts, citronellol 1-15 parts, warning color 1-5 parts, binder 0.5-5 parts, and carrier 80-90 parts; Optionally, the raw materials include the following components by weight: methyl anthranilate 1.2 to 9.6 parts, citronellol 2.4 to 10.8 parts, warning color 1 to 5 parts, binder 0.5 to 5 parts, and carrier 80 to 90 parts; Optionally, the raw materials include the following components by weight: 4.8 to 9.6 parts of methyl anthranilate, 2.4 to 7.2 parts of citronellol, 1 to 5 parts of warning color, 0.5 to 5 parts of binder, and 80 to 90 parts of carrier; Optionally, the raw materials include the following components by weight: 6-9.6 parts of methyl anthranilate, 2.4-6 parts of citronellol, 1-5 parts of warning color, 0.5-5 parts of binder, and 80-90 parts of carrier; Optionally, the raw materials include the following components by weight: 6-9.6 parts of methyl anthranilate, 2.4-6 parts of citronellol, 1-5 parts of warning color, 0.5-5 parts of binder, and 80-90 parts of carrier; Optionally, the raw materials include the following components by weight: 9.6 parts of methyl anthranilate, 2.4 parts of citronellol, 1-5 parts of warning color, 0.5-5 parts of binder, and 80-90 parts of carrier; Optionally, the amount of warning color in the granules is 3 to 5 parts, or optionally 3 to 4 parts; the warning color is optionally selected from one or more of Fast Red, Permanent Red F2R, Carmine, Acid Red or Magenta; Optionally, the amount of binder in the granules is 1.5 to 5 parts, or optionally 1.5 to 3 parts; the binder is optionally selected from one or more of rosin ethanol solution-red and polyethylene glycol 400. Optionally, in the granules, the carrier is used in an amount of 80-85 parts, and optionally made up to 100 parts; Optionally, the binder may be selected from one or more of corn cob particles, quartz sand, and maifan stone.

6. The bird repellent agent according to claim 3 or 4, characterized in that, The formulation is a seed treatment emulsion, comprising the following raw materials in parts by weight: methyl anthranilate 1-5 parts, citronellol 0.5-5 parts, wetting and dispersing agent 5-15 parts, acrylate 1-5 parts, thickener 0-1 part, antifreeze agent 0-5 parts, defoamer 0-1 part, warning color 1-5 parts, and water 70-80 parts. Optionally, the raw materials include the following components by weight: methyl anthranilate 1-4.5 parts, citronellol 0.5-4 parts, wetting and dispersing agent 5-15 parts, film-forming agent 1-5 parts, thickener 0.1-1 part, antifreeze agent 1-5 parts, defoamer 0.1-1 part, warning color 1-5 parts, and water 70-80 parts; Optionally, the raw materials include the following components by weight: 2-4 parts of methyl anthranilate, 1-3 parts of citronellol, 5-15 parts of wetting and dispersing agent, 1-5 parts of film-forming agent, 0.1-1 part of thickener, 1-5 parts of antifreeze agent, 0.1-1 part of defoamer, 1-5 parts of warning color, and 70-80 parts of water; Optionally, the raw materials include the following components by weight: 4 parts methyl anthranilate, 1 part citronellol, 5-15 parts wetting and dispersing agent, 1-5 parts film-forming agent, 0.1-1 part thickener, 1-5 parts antifreeze agent, 0.1-1 part defoamer, 1-5 parts warning color, and 70-80 parts water. Optionally, the amount of wetting and dispersing agent in the seed treatment emulsion is 8-15 parts, optionally 10.7-15 parts, optionally including polycarboxylate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate, optionally the weight ratio of polycarboxylate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate is (2-6):(1-5):(1-5), optionally (4-6):(3-4):(2-4), optionally 4.6:3.2:2.7; Optionally, in the seed treatment emulsion, the amount of film-forming agent is 2 to 5 parts, and the film-forming agent is optionally selected from one or more of acrylate, styrene-acrylic emulsion, and waterborne polyurethane; Optionally, the amount of antifreeze in the seed treatment emulsion is 3 to 5 parts, and the antifreeze is selected from one or more of ethylene glycol, glycerol, and propylene glycol. Optionally, the amount of defoamer in the seed treatment emulsion is 0.4 to 1 part. Optionally, the defoamer is selected from one or more of organosilicon defoamers and polyether defoamers. Optionally, the amount of colorant used in the seed treatment emulsion is 0.5 to 10 parts. Optionally, the colorant is selected from one or more of the following: long-lasting red, permanent red F2R, carmine, and rose red. Optionally, the amount of water used in the seed treatment emulsion is 75-80 parts, and optionally the water is made up to 100 parts; Optionally, the amount of water used in the seed treatment emulsion is 75-80 parts, and optionally the water is made up to 100 parts.

7. The bird repellent agent according to claim 3 or 4, characterized in that, The dosage form is a microcapsule suspension, comprising the following raw materials in parts by weight: methyl anthranilate 4-18 parts, citronellol 2-16 parts, emulsifier 5-15 parts, organic solvent 3-15 parts, wall material 20-30 parts, thickener 0-1 part, antifreeze 0-8 parts, preservative 0-1 part, and water 30-40 parts; Optionally, the raw materials may include the following components by weight: 8-16 parts of methyl anthranilate, 4-12 parts of citronellol, 5-15 parts of emulsifier, 3-15 parts of organic solvent, 20-30 parts of wall material, 0.1-1 part of thickener, 1-8 parts of antifreeze, 0.1-1 part of preservative, and 30-40 parts of water; Optionally, the raw materials may include the following components by weight: 16 parts methyl anthranilate, 4 parts citronellol, 5-15 parts emulsifier, 3-15 parts organic solvent, 20-30 parts wall material, 0.1-1 part thickener, 1-8 parts antifreeze, 0.1-1 part preservative, and 30-40 parts water. Optionally, in the microcapsule suspension, the amount of emulsifier is 6-10 parts, or optionally 8-10 parts, and optionally includes castor oil polyoxyethylene ether and alkylphenol ether phosphate in a weight ratio of 1:(1-5), or optionally includes castor oil polyoxyethylene ether and alkylphenol ether phosphate in a weight ratio of 1:

3. Optionally, the amount of organic solvent used in the microcapsule suspension is 5 to 10 parts, and the organic solvent is xylene. Optionally, the wall material in the microcapsule suspension is used in an amount of 25 to 30 parts, and the wall material is optionally selected from one or more of urea-formaldehyde resin, melamine resin, epoxy resin, polyurea, and polyurethane. Optionally, in the microcapsule suspension, the amount of thickener is 0.1 to 0.5 parts, or optionally 0.3 to 0.5 parts. Optionally, the thickener is selected from one or more of silica, xanthan gum, carboxymethyl cellulose, magnesium aluminum silicate powder, and organobentonite; or optionally, the thickener is selected from silica and xanthan gum. Optionally, the amount of antifreeze in the microcapsule suspension is 5 to 10 parts, and the antifreeze is selected from one or more of ethylene glycol, glycerol, and isopropanol. Optionally, the amount of preservative in the microcapsule suspension is 0.2 to 1 part. Optionally, the preservative is selected from one or more of Kathon, sodium benzoate, potassium sorbate, and methylparaben. Optionally, the amount of water in the microcapsule suspension is 30-40 parts, and optionally the water is made up to 100 parts.

8. A method for preparing a bird repellent agent comprising any one of claims 3 to 7, characterized in that, The process includes the following steps: first, methyl anthranilate, citronellol, and adjuvants are prepared according to the preparation method of the corresponding dosage form.

9. The application of a bird-repelling composition according to claim 1 or 2, or a bird-repelling agent according to any one of claims 3 to 7, for use on crops, buildings, gardens, airports to protect plants, buildings, and aircraft from damage by birds, wherein the birds optionally include one or more of pigeons, white-rumped munias, sparrows, doves, and pheasants.

10. A method for repelling birds, characterized in that, The bird-repelling composition according to claim 1 or 2, or the bird-repelling agent according to any one of claims 3 to 7, is applied to the surface of an object by sprinkling, seed dressing, or spraying to achieve the purpose of repelling birds; optionally, when dressing seeds, the dosage is 50 to 200 grams per 1 kg of seeds; optionally, when spraying, the dilution ratio is 100 to 300.

Images