Colloid-based agricultural additive, pesticide product composition containing colloid-based agricultural additive and application of colloid-based agricultural additive

Abstract

The invention belongs to the technical field of crop protection, and particularly relates to a colloid-based agricultural auxiliary agent, a pesticide product composition containing the colloid-based agricultural auxiliary agent and application of the colloid-based agricultural auxiliary agent. The colloid-based agricultural auxiliary agent comprises the following raw material components in parts by weight: 1-2 parts of a colloid substance, 0-35 parts of an emulsifier, 15-20 parts of a dispersant, 0-10 parts of a surfactant and 45-70 parts of water. The colloid-based agricultural auxiliary agent improves the coverage range of crop leaves, improves the deposition and adhesion of active ingredients of a pesticide product on the crop leaves, increases the resistance to evaporation and washing, enables a target to be in full contact with the active ingredients of the pesticide product, does not need to increase the use amount of the active ingredients, and reduces the production cost. And meanwhile, spray drift and off-target application are reduced, and the spray is green, environment-friendly and biodegradable, so that positive environmental influence is generated.

Description

Technical Field

[0001] The invention belongs to the technical field of crop protection, and specifically relates to a colloid-based agricultural adjuvant and a pesticide product composition containing the colloid-based agricultural adjuvant and application thereof. Background Art

[0002] During the use phase of pesticide products, water is the main diluent and carrier of active ingredients in the application process of pesticide products. Once water containing active ingredients, such as insecticides, evaporates from the leaves on which they are applied, the active ingredients can no longer be absorbed by the stomata of the leaves and transported to other parts of the plant, and pests far away from the site of action cannot absorb the active ingredients of the pesticide products that come into contact with them. Therefore, agricultural adjuvants are needed to bind water and keep it in contact with the target, thereby resisting evaporation.

[0003] At present, after agricultural adjuvants are combined with pesticide products, there has always been a problem of low effective utilization rate during use. It is estimated that only 25% to 50% of the sprayed pesticides can be deposited on crop leaves, and less than 1% of the pesticides can be deposited on target pests. Spray drift is the main cause of pesticide loss. To improve the utilization rate of pesticide products, it is necessary to reduce the loss caused by drift during the transfer of pesticides from the liquid tank to the target.

[0004] In addition, many existing commonly used agricultural adjuvants are toxic and non-biodegradable in the natural environment. For example, some adjuvants include latex or silicone resins, which are not easily biodegradable in the environment, or chemicals such as nonylphenol polyoxyethylene esters, which are extremely toxic to aquatic organisms. Therefore, there is a need in the art for more environmentally friendly adjuvants that can effectively reduce or eliminate the adverse effects of spray drift.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a colloid-based agricultural adjuvant and a pesticide product composition and application containing the colloid-based agricultural adjuvant; the colloid-based agricultural adjuvant group improves the coverage of crop leaves, allows crops to fully contact with the active ingredients of the pesticide product, and reduces spray drift and off-target application.

[0007] In order to overcome the deficiencies of the prior art, the present invention provides the following technical solutions:

[0008] A colloid-based agricultural adjuvant comprises the following raw material components by weight: 1-2 parts of colloid substance, 0-35 parts of emulsifier, 15-20 parts of dispersant, 0-10 parts of surfactant and 45-70 parts of water.

[0009] Furthermore, the colloid substance includes konjac gum or xanthan gum, or a combination thereof.

[0010] Furthermore, the colloid substance comprises a combination of konjac gum and xanthan gum in a weight ratio of 1:1.

[0011] Further, the emulsifier includes modified starch or lecithin, or a combination thereof;

[0012] The dispersant is a polyol, and the polyol includes at least one of farnesol, erythritol, glycerol, isomalt, lactitol, maltitol, mannitol, sorbitol, and xylitol;

[0013] The surfactant includes at least one of Ecosurf nonionic surfactant, soap bark extract, seed oil surfactant, and alkyl polyglycoside surfactant.

[0014] Furthermore, the invention further comprises 1 to 5 parts by weight of a metathesis aid.

[0015] Furthermore, the metathesis aid comprises hydrolyzed linseed or linseed oil, or a combination thereof.

[0016] In addition, the present invention also provides a method for preparing the above-mentioned gum-based agricultural adjuvant, comprising the following steps: weighing all raw materials by weight, mixing them, and stirring them evenly to obtain the gum-based agricultural adjuvant.

[0017] In addition, the present invention also provides a pesticide product composition, including a pesticide product and an effective amount of the above-mentioned colloid-based agricultural adjuvant.

[0018] Furthermore, the pesticide product is selected from at least one of herbicides, fungicides, insecticides or plant growth regulators.

[0019] In addition, the present invention also provides the use of the above-mentioned colloid-based agricultural adjuvant or the above-mentioned pesticide product composition as a field pesticide product preparation.

[0020] Compared with the prior art, the technical solution of the present invention has at least the following technical effects:

[0021] After being used in combination with a pesticide product, the colloid-based agricultural adjuvant of the present invention improves the coverage of the active ingredients of the pesticide product on the leaves of crops, improves the deposition and adhesion of the active ingredients of the pesticide product on the leaves of crops, increases the resistance of the active ingredients to evaporation and washing, and enables the target to fully contact the active ingredients of the pesticide product without increasing the amount of the active ingredients, while reducing spray drift and off-target application, and is green, environmentally friendly and biodegradable, thereby producing a positive environmental impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0023] Figure 1 It is a bar graph of the residual amount of emamectin benzoate on poplar leaves in Test Example 1;

[0024] Figure 2 It is a bar graph of the residual amount of fenpyroxetine on weed leaves in Test Example 2;

[0025] Figure 3 is a bar graph of the total surface area covered by the droplets after two seconds of diffusion in water in Experimental Example 3;

[0026] Figure 4 The following is a bar graph showing the wash fastness of the colloid-based agricultural adjuvants prepared in Examples 1-4 compared with the commercial adjuvant A, the commercial adjuvant B and the insecticide alone. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention. The process parameters of the following embodiments that do not specify specific conditions are usually based on conventional conditions.

[0028] The endpoints and any values ​​of the ranges disclosed in the present invention are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be regarded as specifically disclosed in the present invention.

[0029] According to a first aspect of the present invention, a colloid-based agricultural adjuvant is provided, which comprises the following raw material components in parts by weight: 1 to 2 parts of a colloid substance (e.g., 1 part, 1.5 parts, 2 parts), 0 to 35 parts of an emulsifier (e.g., 0 part, 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts), 15 to 20 parts of a dispersant (e.g., 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts), a surfactant (e.g., 0 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts), and water (e.g., 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts).

[0030] In the above-mentioned gum-based agricultural adjuvant, as a preferred embodiment, the gum material includes konjac gum or xanthan gum, or a combination thereof.

[0031] In the above-mentioned gum-based agricultural adjuvant, as a preferred embodiment, the gum material includes a combination of konjac gum and xanthan gum in a weight ratio of 1:1.

[0032] In the above-mentioned colloid-based agricultural adjuvant, as a preferred embodiment, the emulsifier includes modified starch or lecithin, or a combination thereof; the modified starch described in the present invention is a conventional commercially available product, preferably the modified starch provided by Shandong Yaheng Biotechnology Co., Ltd. or Jiangsu Aofu Biotechnology Co., Ltd.

[0033] The dispersant is a polyol, and the polyol includes at least one of farnesol, erythritol, glycerol, isomalt, lactitol, maltitol, mannitol, sorbitol, and xylitol;

[0034] The surfactant includes at least one of Ecosurf nonionic surfactant, soap bark extract, seed oil surfactant, and alkyl polyglycoside surfactant.

[0035] In the above-mentioned colloid-based agricultural adjuvant, as a preferred embodiment, 1 to 5 parts by weight of a metathesis adjuvant are also included.

[0036] In the above-mentioned gum-based agricultural adjuvant, as a preferred embodiment, the metathesis adjuvant includes hydrolyzed linseed or linseed oil, or a combination thereof.

[0037] According to a second aspect of the present invention, a method for preparing the above-mentioned gum-based agricultural adjuvant is provided, comprising the following steps: weighing all raw materials by weight, mixing them, and stirring them evenly to obtain the gum-based agricultural adjuvant.

[0038] According to a third aspect of the present invention, there is provided a pesticide product composition, comprising a pesticide product and an effective amount of the above-mentioned colloid-based agricultural adjuvant.

[0039] In the above-mentioned pesticide product composition, as a preferred embodiment, the pesticide product is selected from at least one of herbicides, fungicides, insecticides or plant growth regulators.

[0040] According to a fourth aspect of the present invention, there is provided a use of the above-mentioned colloid-based agricultural adjuvant or the above-mentioned pesticide product composition as a field pesticide product formulation.

[0041] The present invention will be described in detail below in conjunction with embodiments of the present invention, and each example is provided by way of explanation of the present invention without limiting the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of an embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0042] In the embodiments of the present invention, the experimental methods used are conventional methods unless otherwise specified, and the materials, reagents, etc. used are all commercially available unless otherwise specified.

[0043] Example 1

[0044] This embodiment provides a colloid-based agricultural adjuvant, and the raw material components are as follows:

[0045] Konjac gum 0.7 g, xanthan gum 0.7 g, glycerin 10 g, modified starch (Shandong Yaheng Biotechnology Co., Ltd.) 33.7 g, acaciatol 9.8 g, water 45.1 g.

[0046] All raw materials were weighed by weight, mixed, and stirred evenly to obtain the colloid-based agricultural adjuvant of this embodiment.

[0047] Example 2

[0048] This embodiment provides a colloid-based agricultural adjuvant, and the raw material components are as follows:

[0049] 0.9g konjac gum, 0.9g xanthan gum, 20g xylitol, 8.7g Ecosurf nonionic surfactant, and 69.5g water.

[0050] All raw materials were weighed by weight, mixed, and stirred evenly to obtain the colloid-based agricultural adjuvant of this embodiment.

[0051] Example 3

[0052] This embodiment provides a colloid-based agricultural adjuvant, and the raw material components are as follows:

[0053] 0.48 g of konjac gum, 0.48 g of xanthan gum, 19.29 g of modified starch, 16.15 g of lactitol, 2.1 g of alkyl polyglycoside surfactant, and 61.5 g of water.

[0054] All raw materials were weighed by weight, mixed, and stirred evenly to obtain the colloid-based agricultural adjuvant of this embodiment.

[0055] Example 4

[0056] This embodiment provides a colloid-based agricultural adjuvant, and the raw material components are as follows:

[0057] 0.57g konjac gum, 0.57g xanthan gum, 18.5g mannitol, 3.4g Ecosurf nonionic surfactant, 13.9g lecithin, 3.56g alkyl polyglycoside surfactant, and 62.9g water.

[0058] All raw materials were weighed by weight, mixed, and stirred evenly to obtain the colloid-based agricultural adjuvant of this embodiment.

[0059] Performance Evaluation

[0060] The colloid-based agricultural adjuvants prepared in Examples 1-4, commercial adjuvant A (a series of adjuvant products jointly developed by Zhonghe Tiancheng Agricultural Development Co., Ltd. and Kao Corporation of Japan; brand: Quanrun; specific ingredients: containing synthetic latex, propylene glycol and fatty alcohol polyoxyethylene ether), and commercial adjuvant B (BASF Jiujia containing nonylphenol polyoxyethylene ether) were subjected to dynamic surface tension, wetting time, drying time and contact angle measurements in water of the same concentration and in water alone, wherein the dynamic surface tension was measured using a SITAT60 dynamic surface tension measuring instrument; after a 0.1ul droplet was dropped on the polyethylene surface using a pipette gun, the wetting time, drying time and contact angle of different treatments were measured, and the measurement results are shown in Table 1, S1 corresponds to Example 1, S2 corresponds to Example 2, S3 corresponds to Example 3, and S4 corresponds to Example 4:

[0061] Table 1

[0062]

[0063]

[0064] Test Example 1

[0065] Determination of the residual amount of insecticide on poplar leaves: The colloid-based agricultural adjuvant prepared in Examples 1-4, the commercial adjuvant A (containing synthetic latex, propylene glycol and fatty alcohol polyoxyethylene ether), and the commercial adjuvant B (containing nonylphenol polyoxyethylene ether) were mixed with the insecticide (emamectin benzoate) and sprayed on the poplar leaves. The leaves were allowed to completely adhere to the liquid and dried for 6 hours. Then, the residual amount of emamectin benzoate on the poplar leaves was analyzed by gas chromatography. The analysis results are shown as follows: Figure 1 As shown, from Figure 1 It can be seen that after the insecticide is used in combination with the colloid-based agricultural adjuvant prepared in Examples 1-4, the residual amount of emamectin benzoate in poplar leaves is significantly higher than that of commercial adjuvant A and commercial adjuvant B.

[0066] Test Example 2

[0067] Determination of the residual amount of herbicide on weed leaves: The colloid-based agricultural adjuvant prepared in Examples 1-4, the commercial adjuvant A (containing synthetic latex, propylene glycol and fatty alcohol polyoxyethylene ether), and the commercial adjuvant B (containing nonylphenol polyoxyethylene ether) were mixed with the herbicide (mefenacet) and sprayed on the leaves of weeds (Amaranthus retroflexus and crabgrass). After the leaves were completely adhered to the liquid and dried for 6 hours, the residual amount of mefenacet on the weed leaves was analyzed by gas chromatography. The analysis results are shown in FIG. Figure 2 As shown, from Figure 2 It can be seen that after the herbicide is used in combination with the colloid-based agricultural adjuvant prepared in Examples 1-4, the residual amount of benomyl on the weed leaves is significantly higher than that of the commercial adjuvant A and the commercial adjuvant B.

[0068] Test Example 3

[0069] Liquid diffusivity measurement: The colloid-based agricultural adjuvants prepared in Examples 1-4, commercial adjuvant A (containing synthetic latex, propylene glycol and fatty alcohol polyoxyethylene ether), and commercial adjuvant B (containing nonylphenol polyoxyethylene ether) were prepared at 2% and 5% concentrations, respectively, and then the total surface area covered by the droplets after diffusing in water for two seconds was calculated. The measurement results are as follows: Figure 3 As shown, from Figure 3 It can be seen that the total surface area of ​​the colloid-based agricultural adjuvants prepared in Examples 1-4 is significantly larger than that of the commercially available adjuvants A and B.

[0070] Figure 4 : is a bar graph showing the wash fastness of the gum-based agricultural adjuvants prepared in Examples 1-4 compared with the commercial adjuvant A, the commercial adjuvant B and the insecticide alone.

[0071] The above describes and evaluates the efficacy of some embodiments of the present invention. It should be understood that the present invention is not limited to the above specific implementations. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still falls within the scope of protection of the technical solutions of the present invention.

Claims

1. A colloid-based agricultural adjuvant, characterized in that: The raw material components include the following by weight: 1-2 parts of colloidal substance, 0-35 parts of emulsifier, 15-20 parts of dispersant, 0-10 parts of surfactant and 45-70 parts of water.

2. The colloid-based agricultural adjuvant according to claim 1, characterized in that: The colloid substance includes konjac gum or xanthan gum, or a combination thereof.

3. The colloid-based agricultural adjuvant according to claim 2, characterized in that: The colloid substance comprises a combination of konjac gum and xanthan gum in a weight ratio of 1:

1.

4. The colloid-based agricultural adjuvant according to claim 1, characterized in that: The emulsifier includes modified starch or lecithin, or a combination thereof; The dispersant is a polyol, and the polyol includes at least one of farnesol, erythritol, glycerol, isomalt, lactitol, maltitol, mannitol, sorbitol, and xylitol; The surfactant includes at least one of Ecosurf nonionic surfactant, soap bark extract, seed oil surfactant, and alkyl polyglycoside surfactant.

5. The colloid-based agricultural adjuvant according to any one of claims 1 to 4, characterized in that: The invention also comprises 1 to 5 parts of metathesis aid by weight.

6. The colloid-based agricultural adjuvant according to claim 5, characterized in that: The metathesis aid includes hydrolyzed linseed or linseed oil, or a combination thereof.

7. A method for preparing a colloid-based agricultural adjuvant according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: weighing all raw materials by weight, mixing them, and stirring them evenly to obtain the colloid-based agricultural adjuvant.

8. A pesticide product composition, characterized in that: The invention comprises a pesticide product and an effective amount of the colloid-based agricultural adjuvant according to any one of claims 1 to 6.

9. The pesticide product composition according to claim 8, characterized in that: The pesticide product is selected from at least one of herbicides, fungicides, insecticides or plant growth regulators.

10. Use of the colloid-based agricultural adjuvant according to any one of claims 1 to 6 or the pesticide product composition according to claim 8 or 9 as a field pesticide product preparation.

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