Quick-dry rain wash-resistant pesticide composition for treating and preventing poplar canker

Abstract

The invention provides a quick-drying rain wash-resistant pesticide composition for treating and preventing poplar canker, which comprises a quick-drying agent G-103, a pesticide active component, an adhesive and an auxiliary material, the quick-drying agent G-103 accounts for 0.01-20% of the total weight of the pesticide composition, the pesticide active component is an inorganic bactericide and accounts for 0.5-15% of the total weight of the pesticide composition, the adhesive accounts for 0.5-10% of the total weight of the pesticide composition, and the auxiliary material accounts for 0.5-10% of the total weight of the pesticide composition. The inorganic bactericide is one or a mixture of two of copper salts, and the adhesive is a synthetic adhesive and accounts for 1-40% of the total weight of the pesticide composition. The pesticide composition is smeared on the infected bark surface of an upright poplar trunk, the lasting period of the pesticide is kept for more than 7 months, the quick-drying agent G-103 is added, so that the pesticide composition with small viscosity and high flowability is quickly dried and cured to form a smeared layer, the pesticide loss is less, meanwhile, the rain wash resistance of the smeared layer is improved, the pesticide consumption is reduced, and the cost is reduced. And the control effect can be ensured. By using the composition, the use amount of pesticides can be reduced by 28.6%, the prevention and treatment cost is reduced, and the environment is protected.

Description

Technical Field

[0001] The invention belongs to the field of pesticide compositions, and in particular relates to a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker. Background Art

[0002] Poplar canker (also known as poplar bark rot) starts in April and does not get better until October. The onset period is as long as 7 to 8 months. In severe cases, the survival rate of transplanted poplars is less than 30%. my country's Three North Shelterbelts, which mainly plant poplars, have always been threatened by poplar canker; the most difficult "disease and one insect" to prevent and control in urban landscaping, one of which is canker. There are many kinds of products used to treat poplar canker in China, but they all have a technical defect: the drug effect lasts for a short period of 7-15 days, and repeated prevention and control are required. The pesticide application must be repeated five or even more than ten times to achieve the prevention and control goals. The pesticide composition currently on the market for treating poplar canker not only has high prevention and control costs, but also seriously pollutes the environment if used multiple times, which is not in line with the concept of sustainable development. The pesticide combination before the accelerating dry agent G-103 of the present invention was invented by me in 2010. It is applied on the infected bark surface of the upright poplar trunk. When applying the pesticide, if the viscosity of the liquid is high, the fluidity is low, the coating layer is thick, and the amount of medicine used is large, the prevention and control cost is increased, causing waste; if the viscosity of the liquid is low, the fluidity is high, the loss of the pesticide during application is large, and the treatment and prevention effects cannot be guaranteed. In addition, the erosion of the coating layer by rainwater has an impact on maintaining the prevention and control effect. Summary of the invention

[0003] In view of this, the present invention aims to propose a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, which is applied on the bark surface of the upright poplar trunk infected with the disease, and the drug lasts for more than 7 months, so that the pesticide composition with low viscosity and high fluidity dries quickly, with less loss of the agent, forming a relatively thin coating layer, improving the rain-resistant performance, reducing the amount of pesticide used, and ensuring the prevention and control effect. To solve the above problems.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A quick-drying agent G-103 of a pesticide composition for treating and preventing poplar canker. The quick-drying agent G-103 (polymer auxiliary agent produced by Shenzhen Tai New Material Technology Development Co., Ltd.) is a dispersing wetting agent with three-in-one powerful properties of wetting, dispersing and enhancing synergy. It is mainly used in water suspensions to wet and disperse the surface of the original drug through the action of electric charges; it can be coated on the surface of the original drug, and is non-toxic, environmentally friendly and degradable. The present invention finds that it also has good quick-drying performance.

[0006] A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, comprising a quick-drying agent G-103, a pesticide active ingredient, an adhesive and auxiliary materials, wherein the quick-drying agent G-103 accounts for 0.01-20% of the total weight of the pesticide composition; the pesticide active ingredient is an inorganic fungicide, accounting for 0.5-15% of the total weight of the pesticide composition; the inorganic fungicide is a mixture of one or two copper salts; and the adhesive is a synthetic adhesive, accounting for 1%-40% of the total weight of the pesticide composition.

[0007] Furthermore, the copper salt is copper hydroxide, copper oxide, or a mixture of two or more thereof.

[0008] Furthermore, the adhesive is a synthetic adhesive, which is selected from one or a mixture of two or more of phenolic resin, epoxy resin, unsaturated polyester, polyurethane, urea-formaldehyde resin, polyvinyl acetate, polyaminoethylene, vinyl acetate, polyacrylate, polystyrene, polyamide, alkyd resin, cellulose, saturated polyester, recycled rubber, butyl rubber, styrene rubber, butadiene rubber, polysulfide rubber, phenolic-polyvinyl acetal, phenolic-butadiene rubber, epoxy-phenolic, epoxy-polysulfide rubber; preferably, the synthetic adhesive is a polyacrylic emulsion adhesive.

[0009] Furthermore, the auxiliary material includes an organic fungicide, which is a powder-type organic fungicide, accounting for 0.05-2% of the total weight of the pesticide composition.

[0010] Furthermore, the organic fungicide is an azole fungicide, and the azole fungicide is selected from one or a mixture of two or more of fenpropimorph, tebuconazole, prothioconazole, cyproconazole, diniconazole, propiconazole, tricyclazole, trichlorfonazole, triflumizole, flusilazole, and metconazole.

[0011] Preferably, the azole fungicide is difenoconazole.

[0012] Furthermore, the auxiliary materials include plant growth regulators, cellulose, carriers, dispersants, wetting agents, defoamers, film-forming aids, thickeners, multifunctional aids and water.

[0013] Furthermore, the weight percentage of the auxiliary materials to the total weight of the pesticide composition is as follows: plant growth regulator: 0.01-0.2%; cellulose: 0.2-1%; carrier: 20-30%, dispersant: 0.3-0.8%; wetting agent: 0.1-0.2%; defoamer: 0.1%; film-forming aid: 0.5-0.7%; thickener: 0.1-0.2%; multifunctional adjuvant: 0.2-0.3%; fertilizer: 0.2-0.3%; insecticide: 0.3%; the balance is water.

[0014] Furthermore, the plant growth regulator is one or a mixture of two or more of 6-benzylaminopurine, thidiazuron, brassinolide, sodium nitrophenolate, potassium nitrophenolate, chlormequat, triacontanol, naphthylacetic acid and its salts, indolebutyric acid and its salts, indoleacetic acid and its salts, ethephon, aminoethyl ester, paclobutrazol, uniconazole, fulvic acid, mepiquat, nitrohumic acid, jasmonic acid, and thiazolinone.

[0015] Preferably, the plant growth regulator is a mixture of naphthylacetic acid and tridecanol.

[0016] Furthermore, the carrier is selected from one or more of heavy calcium carbonate, light calcium carbonate, kaolin, white carbon black, montmorillonite and diatomaceous earth.

[0017] Preferably, the carrier is kaolin and light calcium carbonate in a weight ratio of 1:1, the particle size of the kaolin is 1000-1500 mesh, and the particle size of the light calcium carbonate is 500-1000 mesh.

[0018] Furthermore, the dispersant is one or a mixture of two or more of sodium polyacrylate, alkylphenol polyoxyethylene ether phosphate or ester, sodium naphthalene sulfonate formaldehyde condensate, alkylnaphthalene formaldehyde condensate sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate, polyoxyethylene polyoxypropylene ether block copolymer, sodium lignin sulfonate, and calcium lignin sulfonate.

[0019] Furthermore, the wetting agent is selected from one or a mixture of two or more of alkyl aromatic polyoxyethylene ethers, high molecular weight branched copolymers, fatty alcohol polyoxyethylene ethers, fatty alcohol ethylene oxide addition product sulfonates, fatty alcohol polyoxyethylene ethers, tristyrylphenol polyoxyethylene ethers and derivative esters, high molecular weight EO-PO block copolymers, succinic acid sulfite pulp waste liquid, tea ash powder and saponin powder.

[0020] Furthermore, the defoaming agent is one or a mixture of two or more of a silicon defoaming agent, a polyether defoaming agent, and a polysiloxane defoaming agent.

[0021] Furthermore, the film-forming aid is one or a mixture of two or more of organic silicone, polyvinyl butyral, polyvinyl alcohol, polyvinyl acetate, carboxymethyl cellulose, rosindiene xanthan gum, and starch.

[0022] Furthermore, the thickener is one or a mixture of two or more of polyacrylic acid, polyvinyl alcohol, polyvinyl acetate, hydroxymethyl cellulose, hydroxyethyl cellulose, xanthan gum, gelatin, and gum arabic.

[0023] Furthermore, the multifunctional additive is multifunctional additive AMP-95, which can effectively control the pH value and has a highly efficient dispersing effect.

[0024] Furthermore, the pesticide composition also contains 0.2-0.3% of fertilizer, which accounts for 0.2-0.3% of the total weight of the pesticide composition. The fertilizer is one or a mixture of two or more of a macronutrient fertilizer, a medium-nutrient fertilizer, a trace-nutrient fertilizer, and a rare-earth-element fertilizer.

[0025] Furthermore, the pesticide composition is also added with insecticide accounting for 0.3% of the total weight of the pesticide composition.

[0026] Furthermore, the pesticide composition is in the form of a paste, a wettable powder, a soluble solution, a soluble granule, a soluble powder, a suspension, a suspoemulsion, a water-dispersible granule or a water-dispersible tablet.

[0027] The pesticide composition is used to treat phloem diseases of trees and shrubs in agriculture, forestry and gardening industries.

[0028] The preparation method of the above-mentioned quick-drying rain-resistant pesticide composition for treating and preventing poplar canker disease comprises the following steps: putting water, cellulose and synthetic adhesive into a reaction kettle and stirring them evenly; then adding quick-drying agent G-103, inorganic fungicide, organic fungicide, plant growth regulator, carrier, dispersant, wetting agent, defoaming agent, film-forming aid and thickener into the reaction kettle respectively and stirring them evenly again to obtain the pesticide composition for treating and preventing poplar canker disease.

[0029] Compared with the prior art, the quick-drying rain-resistant pesticide composition for treating and preventing poplar canker of the present invention has the following advantages:

[0030] (1) Quick-drying agent G-103 can quickly dry liquid agents with high fluidity, solidify the coating layer, and reduce loss. The quick-drying agent G-103 is added to the pesticide composition, and the product is adjusted from the original high viscosity and low fluidity state to a low viscosity and high fluidity state. When used in production practice, when applying the pesticide, the highly fluid liquid agent is quickly dried to form a relatively thin coating layer, and the loss of the agent is small, which not only reduces the amount of pesticide used, but also ensures the control effect. At the same time, the rain erosion resistance is greatly improved, the loss of the drug due to rain leaching is reduced, and the drug's efficacy time is extended.

[0031] (2) The inorganic fungicide (such as copper salt) added in the present invention can remove fungi and bacteria on the tree epidermis, playing a role in preventing and curing diseases. Synthetic adhesives and film-forming agents are added to adhere the inorganic fungicide and auxiliary materials to the tree trunk to form a long-lasting protective film.

[0032] (3) After the pesticide composition of the present invention is applied to the tree trunk, a protective film is formed. The formation of the protective film protects and fixes the inorganic fungicide, preventing it from being oxidized and leached by a large amount of rainwater, thereby increasing the durability of the drug effect.

[0033] (4) The pesticide composition of the present invention can effectively prevent and treat common diseases such as poplar canker and rot, and the pesticide composition of the present invention can maintain its efficacy for more than 7 months after one application, effectively extending the action time of the agent and reducing capital investment. In addition, the use of the present invention can significantly reduce the amount of pesticide used, protect the environment, and reduce environmental pollution. DETAILED DESCRIPTION

[0034] Unless otherwise defined, the technical terms used in the following examples have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods, unless otherwise specified, are all conventional methods.

[0035] The present invention will be described in detail below with reference to the embodiments.

[0036] The raw materials used in the examples are all products produced by Beijing Xingmei Ya Company. Specifically,

[0037] The specific model of the dispersant is 602N sodium polyacrylate dispersant;

[0038] The specific model of the wetting agent is X-40 octylphenol polyoxyethylene ether wetting agent;

[0039] The specific model of the defoamer is 202 lithium silicate defoamer;

[0040] The film-forming aid is an organic silicone film-forming aid;

[0041] The specific model of the thickener is ASE-60 thickener;

[0042] The specific model of the multifunctional additive is AMP-95 multifunctional additive;

[0043] The insecticide used is a 0.5% matrine aqueous solution.

[0044] Example 1

[0045] A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, comprising the following raw materials in parts by weight: 20kg of copper hydroxide; 20kg of quick-drying agent G-103; 2kg of difenoconazole; 0.2kg of naphthylacetic acid; 0.005kg of triacontanol; 5kg of cellulose; 85kg of polyacrylic acid emulsion adhesive; 150kg of light calcium carbonate; 150kg of heavy calcium carbonate, 5kg of dispersant; 2kg of wetting agent; 1kg of defoamer; 5kg of film-forming aid; 1kg of thickener; 2kg of multifunctional aid; 1kg of insecticide; 3kg of urea; the remainder being water, the total weight of the above raw materials being 1000kg.

[0046] Put water, cellulose and polyacrylic acid emulsion adhesive into a reaction kettle and stir them evenly; then add copper hydroxide, quick-drying agent G-103, difenoconazole, naphthylacetic acid, triacontanol, carrier, dispersant, wetting agent, defoaming agent, film-forming aid, thickener, multifunctional adjuvant, insecticide and urea into the reaction kettle respectively and stir them evenly again to obtain a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker.

[0047] Example 2

[0048] A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, comprising the following raw materials in parts by weight: 30 kg of copper hydroxide; 50 kg of quick-drying agent G-103; 5 kg of diniconazole; 1.0 kg of naphthylacetic acid; 0.05 kg of triacontanol; 2 kg of cellulose; 120 kg of polyacrylic acid emulsion adhesive; 120 kg of light calcium carbonate; 150 kg of heavy calcium carbonate, 3 kg of dispersant; 1 kg of wetting agent; 1 kg of defoaming agent; 5 kg of film-forming aid; 2 kg of thickener; 2.5 kg of multifunctional aid; 1 kg of insecticide; 3 kg of urea; the remainder being water, the above raw materials totaling 1000 kg.

[0049] Put water, cellulose and polyacrylic acid emulsion adhesive into a reaction kettle and stir them evenly; then add copper hydroxide, G-103, difenoconazole, naphthylacetic acid, triacontanol, carrier, dispersant, wetting agent, defoamer, film-forming aid, thickener, multifunctional adjuvant, insecticide and urea into the reaction kettle respectively and stir them evenly again to obtain a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker.

[0050] Example 3

[0051] A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, comprising the following raw materials in parts by weight: 36 kg of copper hydroxide; 35 kg of quick-drying agent G-103; 15 kg of flusilazole; 1.5 kg of indoleacetic acid; 0.005 kg of triacontanol; 8 kg of cellulose; 85 kg of polyacrylic acid emulsion adhesive; 100 kg of light calcium carbonate; 130 kg of heavy calcium carbonate, 6 kg of dispersant; 1.6 kg of wetting agent; 1 kg of defoaming agent; 5.5 kg of film-forming aid; 1.3 kg of thickener; 2.0 kg of multifunctional aid; 1 kg of insecticide; 3 kg of urea; the remainder being water, the above raw materials totaling 1000 kg.

[0052] Put water, cellulose and polyacrylic acid emulsion adhesive into a reaction kettle and stir them evenly; then add copper hydroxide, quick-drying agent G-103, difenoconazole, naphthylacetic acid, triacontanol, carrier, dispersant, wetting agent, defoaming agent, film-forming aid, thickener, multifunctional adjuvant, insecticide and urea into the reaction kettle respectively and stir them evenly again to obtain a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker.

[0053] Example 4

[0054] A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker disease comprises the following raw materials in parts by weight: 30 kg of copper hydroxide; 5 kg of quick-drying agent G-103; 20 kg of prothioconazole; 1.8 kg of naphthylacetic acid; 0.015 kg of triacontanol; 8.8 kg of cellulose; 300 kg of polyacrylic acid emulsion adhesive; 100 kg of light calcium carbonate; 100 kg of heavy calcium carbonate, 7 kg of dispersant; 1.6 kg of wetting agent; 1 kg of defoaming agent; 6.5 kg of film-forming aid; 1.8 kg of thickener; 2.5 kg of multifunctional aid; 1 kg of insecticide; 3 kg of urea; the remainder being water. The above raw materials total 1000 kg.

[0055] Put water, cellulose and polyacrylic acid emulsion adhesive into a reaction kettle and stir them evenly; then add copper hydroxide, quick-drying agent G-103, difenoconazole, naphthylacetic acid, triacontanol, carrier, dispersant, wetting agent, defoaming agent, film-forming aid, thickener, multifunctional adjuvant, insecticide and urea into the reaction kettle respectively and stir them evenly again to obtain a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker.

[0056] Example 5

[0057] A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, comprising the following raw materials in parts by weight: 30 kg of copper hydroxide; 65 kg of quick-drying agent G-103; 20 kg of tebuconazole; 1.9 kg of uniconazole; 10 kg of cellulose; 450 kg of polyacrylic acid emulsion adhesive; 130 kg of light calcium carbonate; 100 kg of heavy calcium carbonate, 8 kg of dispersant; 2 kg of wetting agent; 1 kg of defoaming agent; 7 kg of film-forming aid; 2 kg of thickener; 2.8 kg of multifunctional aid; 1 kg of insecticide; 3 kg of urea; the remainder being water, the above raw materials totaling 1000 kg.

[0058] Put water, cellulose and polyacrylic acid emulsion adhesive into a reaction kettle and stir them evenly; then add copper hydroxide, quick-drying agent G-103, difenoconazole, naphthylacetic acid, triacontanol, carrier, dispersant, wetting agent, defoaming agent, film-forming aid, thickener, multifunctional adjuvant, insecticide and urea into the reaction kettle respectively and stir them evenly again to obtain a quick-drying rain-resistant pesticide composition for treating and preventing poplar canker.

[0059] Example 6 Quick Drying Test

[0060] This experiment uses the dynamic dryness method for testing. The dynamic dryness analysis tester is an instrument that uses the principle of multiple light scattering and the advanced multi-speckle diffusion wave spectroscopy principle to monitor the film drying process in real time and derive the characteristic drying time.

[0061] At 25°C and 40% relative humidity,

[0062] The above-mentioned Example 1 and Example 1-0 (Example 1-0 does not use the accelerating drying agent G-103) were respectively coated with a film applicator to form a film with a thickness of 150 μm on a sample table, and tested using a dynamic dryness analysis tester to draw a dryness curve. Figure 1 It is the dynamic dryness curve diagram of Example 1 and Example 1-0.

[0063] The above-mentioned Example 2 and Example 2-0 (Example 2-0 does not use the accelerating drying agent G-103) were respectively coated with a film applicator to form a film with a thickness of 150 μm on a sample table, and tested using a dynamic dryness analysis tester to draw a dryness curve. Figure 2 It is the dynamic dryness curve diagram of Example 2 and Example 2-0.

[0064] The above-mentioned Example 3 and Example 3-0 (Example 3-0 does not use the accelerating drying agent G-103) were respectively coated with a film applicator to form a film with a thickness of 150 μm on a sample table, and tested using a dynamic dryness analysis tester to draw a dryness curve. Figure 3 It is the dynamic dryness curve diagram of Example 3 and Example 3-0.

[0065] The above-mentioned Example 4 and Example 4-0 (Example 4-0 does not use the accelerating drying agent G-103) were respectively coated with a film applicator to form a film with a thickness of 150 μm on a sample table, and tested using a dynamic dryness analysis tester to draw a dryness curve. Figure 4 It is the dynamic dryness curve diagram of Example 4 and Example 4-0.

[0066] The above-mentioned Example 5 and Example 5-0 (Example 5-0 does not use the accelerating drying agent G-103) were respectively coated with a film applicator to form a film with a thickness of 150 μm on a sample table, and tested using a dynamic dryness analysis tester to draw a dryness curve. Figure 5 It is the dynamic dryness curve diagram of Example 5 and Example 5-0.

[0067] Figure 6 The dynamic dryness curves of Examples 1 to 5 and Examples 1-0 to 5-0 are shown in FIG.

[0068] A commercially available 3% thiophanate-methyl paste was coated on a sample table to form a film with a thickness of 150 μm using a film applicator, and tested using a dynamic dryness analysis tester. A dryness curve was drawn and compared with the dynamic dryness curves of Examples 1 to 5. Figure 7 The dynamic drying curves of 3% methyl thiophanate paste and Examples 1 to 5 are shown.

[0069] From the results, it can be seen that ① the drying rate of the film with the addition of quick-drying agent G-103 is greater than that without it. ② The order of the drying rate of the film is Example 5> Example 2> Example 3> Example 1> Example 4> Commercially available 3% methyl thiophanate paste, which shows that the greater the amount of quick-drying agent G-103 added, the faster the film dries. ③ The original product is in a high viscosity and low fluidity state, 1 kg is applied to 2 square meters (control area), and the dry agent G-103 is adjusted to a low viscosity and high fluidity state, 1 kg is applied to 2.8 square meters, reducing the use of medicine by 28.6%.

[0070] Example 7 Rainwater erosion resistance test

[0071] Under the environment of 25°C and 40% relative humidity, the above-mentioned Examples 1 to 5, Examples 1-0 to 5-0 and commercially available 3% methyl thiophanate paste were coated with a film of 150 μm thickness on the sample table using a film applicator. After drying for 1 hour, water was dripped onto the dried liquid film with an acid burette. The dripping rate was adjusted to simulate rain scouring of different scales, 0.5 mL / min simulated light rain, 2 mL / min simulated moderate rain, and 5 mL / min simulated heavy rain. Each test was repeated three times. After scouring for 15 minutes, the liquid film was placed under a microscope to observe the integrity. At the same time, the content of copper hydroxide in Example 1, Example 1-0 and Example 2, Example 2-0 after moderate rain scouring was tested (liquid spectrometry test). The results are shown in Tables 1 and 2:

[0072] Table 1 Rainwater erosion resistance test results (average observation results of three repetitions)

[0073]

[0074] It can be seen from Table 1 that after adding the quick-drying agent G-103, the integrity of the film was maintained very well after being washed by rainwater. Without adding the quick-drying agent G-103, the film was damaged to varying degrees.

[0075] Table 2 Copper hydroxide content in Example 1 and copper hydroxide content in Example 2 after simulated moderate rain scouring

[0076]

[0077] Loss rate % = (effective matter content before flushing - effective matter content after flushing) / effective matter content before flushing × 100%.

[0078] As can be seen from Table 2, adding the quick-drying agent G-103 can not only dry quickly, but also reduce the loss of effective ingredients after being washed by rainwater. The copper hydroxide in Example 1 only lost 2% with the quick-drying agent G-103, while it lost 10% without the quick-drying agent; the effective ingredient copper hydroxide in Example 2 only lost 3.3% with the quick-drying agent G-103, while it lost 10.3% without the quick-drying agent.

[0079] Example 8 Experimental study on the control of poplar canker using the pesticide composition obtained in Example 1

[0080] Subjects:

[0081] Yizhuo Horticultural Nursery in Huaming Town, Dongli District, Tianjin, bare-rooted 300 poplar trees with a breast diameter of 10 cm were transplanted from February 21 to 25, 2022, with the poles fixed at 5 meters. This nursery is a heavily saline-alkali land, and poplar trees are not easy to take root and are prone to ulcer disease.

[0082] Trial period: April 10, 2022 to November 6, 2022

[0083] Test method:

[0084] The selected agents were: water as control, 0.3% tetramycin aqueous solution (Liaoning Weike Biotechnology Co., Ltd.; registered control target: poplar canker) and Example 1 group

[0085] 300 poplars were divided into a water group, a tetramycin group and an Example 1 group, each group having 100 trees, wherein the water group was treated by spraying water once every 7 days, for a total of three times (the first time on April 10, the second time on April 17, and the third time on April 24); the tetramycin group was treated by diluting 0.3% tetramycin aqueous solution 30 times, spraying once every 7 days, for a total of three times (the first time on April 10, the second time on April 17, and the third time on April 24); the Example 1 group was treated by applying the pesticide composition obtained in Example 1 to the tree trunks below 2 meters, and only applying it once (April 10). (The first time on April 10, the second time on April 17, and the third time on April 24 were all sunny days without rain).

[0086] Survey indicators: treatment effect and survival rate.

[0087] Treatment effect (%) = number of dry lesions / total number of lesions*100% (Note: Among the symptoms of poplar canker, canker lesions are the easiest to investigate and count.)

[0088] Survey of the number of lesions: 30 trees were randomly selected from each treatment for investigation. The number of canker lesions on the trunks of each tree below 2 meters in height was investigated (dry lesions: cured or self-healed lesions, a small part of poplar canker lesions can heal themselves; wet lesions: lesions that are currently suffering from disease).

[0089] Survey time: the day of treatment, 5 days after treatment, 20 days after treatment, 35 days after treatment, 65 days after treatment, and 240 days after treatment, for a total of 6 times.

[0090] Survival rate (%): number of surviving plants / number of experimental plants*100%

[0091] The experimental results are shown in Table 3 and Figure 8 :

[0092] Table 3 The therapeutic effect of Example 1 on poplar canker lesions

[0093] Note: During the 240-day survey, more poplars died in the clean water group and tetramycin group, and the data are no longer representative. ---- in the table indicates that there is no data here. Figure 8 This is a curve chart showing the changes in the number of wet lesions caused by poplar canker.

[0094] In the eastern part of Tianjin, the land is seriously salinized. The bare-root transplanted poplar trees are weak and difficult to root, and the ulcer disease is serious. The peak period of poplar ulcer disease is April, May and June each year; the high temperature in July and August will inhibit the occurrence of the disease, and the disease is less severe during this period; September and October are another peak period. Under natural conditions, the self-healing rate of transplanted poplar ulcer lesions is about 20%.

[0095] From Table 3, Figure 8 It can be seen that:

[0096] In the clean water group without prevention and treatment, the survival rate of transplanted poplars was only 31%. (Transplanted poplars without prevention and treatment will produce a large number of ulcer spots in April and May. The bark at the ulcer spots is necrotic. The ulcer spots are connected, and the dead bark is connected, causing large-scale bark death. More than 2 / 3 of the bark around the trunk dies, and the tree dies. Under the damage of ulcer disease, the survival rate of transplanted poplars without prevention and treatment is only 31%.)

[0097] After 5 days of treatment with 0.3% tetramycin aqueous solution, the therapeutic effect on poplar canker lesions was 86%; after 20 days of investigation (6 days after the third spraying), the therapeutic effect was 83.5%; after 35 days of investigation (21 days after the third spraying), the therapeutic effect dropped to 57.1%, and the number of wet lesions increased rapidly from 145 at the time of the 20-day investigation to 620. This shows that 21 days after spraying, the therapeutic effect of 0.3% tetramycin aqueous solution on poplar canker lesions weakened rapidly, and the increase in dry lesions was mainly due to self-healing; after 65 days of investigation, the therapeutic effect dropped to 40.8%, and the number of wet lesions increased to 1390, an increase of 770 at 35 days, and an increase of 752 in the clear water group during the same period. This shows that at this time, the 0.3% tetramycin aqueous solution treatment has no therapeutic effect on canker lesions, and the increase in dry lesions is mainly due to self-healing. Figure 8 It can also be seen that the treatment effect of 0.3% tetramycin aqueous solution on the occurrence of ulcer disease wet spots within 20 days is very good. After 20 days, the wet spots increase rapidly and the treatment effect decreases rapidly. When the drug control effect is lost in May and June, the poplars produce a large number of ulcer spots, causing the death of the poplars. Only three times of control in spring, the survival rate of poplars is 55%. It can be concluded that 0.3% tetramycin aqueous solution is effective in preventing poplar canker disease, and it needs to be controlled many times in spring and autumn to achieve the purpose of control.

[0098] The trunk of the group of Example 1 was only applied once, and a protective film was formed after the trunk was applied. The treatment effect on the poplar canker disease spots was 89.9% after 5 days of investigation; the treatment effect on the poplar canker disease spots was 96.4% after 20 days of investigation, the number of wet spots was 30, and the total number of spots was 764; the treatment effect on the poplar canker disease spots was 95.1% after 35 days of investigation, the number of wet spots was 43, and the total number of spots was 879; the treatment effect on the poplar canker disease spots was 97% after 65 days, the number of wet spots was 28, and the total number of spots was 940. This period of time was the peak period of the onset of poplar canker disease, but the poplars treated by the group of Example 1 had very few cases; when investigated for 240 days, the number of spots in the group of Example 1 had passed the peak period of the onset in September and October, the number of wet spots was 20, the total number of spots was 1009, the treatment effect was 98%, and the survival rate of transplanted poplars was 91%. The results show that the first embodiment of the present invention is applied to the trunk once a year. Within 20 days of application, the treatment effect on poplar canker disease spots is 96.4%. Until 240 days after the application of the drug, the drug film applied still effectively plays a preventive and control role, ensuring the normal growth of the poplars, and the survival rate of transplanted poplars reaches 91%. It can be seen that the first embodiment of the present invention is applied once a year, which effectively controls the harm of poplar canker disease to poplars, and the drug effect lasts for more than 7 months.

[0099] In summary, in the clear water group without prevention and treatment, the transplanted poplar canker disease was very serious, with a survival rate of only 31%. The 0.3% tetramycin aqueous solution treatment had a good prevention and control effect within 21 days, and then the prevention and control effect declined rapidly, with a survival rate of only 55%. The Example 1 group only applied the trunk once, and the prevention and control effect was always very good, with a survival rate of 91%.

[0100] The wet lesions of transplanted poplar canker are the diseased lesions, and the number of wet lesions directly reflects the severity of the canker. Figure 8 It can be clearly seen that in the clean water group without any control, the number of wet lesions of transplanted poplar canker increased rapidly from 529 on the day of treatment to 2965 on the 65th day after treatment. At 240 days, most of the transplanted poplars died and the number of wet lesions could not be counted. In the treatment with 0.3% tetramycin aqueous solution, the number of wet lesions of transplanted poplar canker decreased rapidly from the day of treatment (528) to 20 days after treatment (145), and then increased rapidly again 35 days after treatment (620). The number of wet lesions was 20 days after treatment, and the number of wet lesions was 20 days after treatment. The number of wet lesions of transplanted poplars was 20 days after treatment, and the number of wet lesions was 20 days after treatment. The number of wet lesions of transplanted poplars was 20 days after treatment, and the number of wet lesions was 20 days after treatment. Only a few transplanted poplars died. It can be seen that the trunk of the first embodiment group was only coated once, and the number of wet lesions increased slowly and in small numbers from the formation of the protective film to 240 days after treatment. It fully shows that the first embodiment group still effectively played a preventive and control role at 240 days, protecting the normal growth of poplars, and had a good preventive and control effect on transplanted poplar canker.

[0101] Why does the embodiment 1 group have such a highly effective control effect? ​​The reasons are as follows: the coating layer formed by applying the tree trunk with polyacrylic acid emulsion adhesive, light calcium carbonate and heavy calcium carbonate as the main raw materials can be kept on the tree trunk for more than one year without falling off, similar to the exterior wall coating of the building, which plays a role of protecting and fixing the main bactericidal active ingredient copper hydroxide contained in the coating layer, and the main bactericidal active ingredient copper hydroxide also stays on the tree trunk for a long time to play a bactericidal role; a small part of copper hydroxide is oxidized into copper oxide in the air, and copper oxide can release copper ions, which also plays a bactericidal role. Therefore, the main bactericidal active ingredient copper hydroxide is oxidized and lost very little; the solubility of copper hydroxide at 25°C is about 0.0036g / L, and the solubility of copper oxide at 25°C is only 0.0000089g / L. Both are difficult to dissolve in water, so it is not easy to be leached and lost by rainwater. Samples were taken from the coating layer at 240 days, and the content of copper hydroxide (liquid spectrum test) was tested to be 0.89% (the initial content of copper hydroxide in the coating layer was 2%). In summary, due to the presence of the coating layer and the characteristics of copper hydroxide and copper oxide, the content of copper hydroxide is sufficient to maintain the bactericidal effect after 240 days. Among the fungicides currently used in production practice, only copper hydroxide can achieve a long-term control effect through the pesticide composition of the present invention.

[0102] In 2010, I invented the pesticide composition before the accelerated dry agent G-103. Since 2010, the pesticide composition before the accelerated dry agent G-103 has been used in production practice to prevent and treat poplar canker, and has been used in Tianjin, Hebei, Beijing, Shandong, Jiangsu, Anhui, Henan, Shaanxi, Gansu, Ningxia, Xinjiang, Inner Mongolia, Liaoning, Jilin, and Heilongjiang for more than 10 years. Production practice has fully proved that the pesticide combination without the accelerated dry agent G-103 has a lasting effect of more than 7 months on the prevention and treatment of poplar canker. The pesticide combination with the accelerated dry agent G-103 has lower prevention and control costs and better effects.

[0103] From Table 3, Figure 8 More than 10 years of use practice has proved that the pesticide composition of the present invention, applied once a year, can effectively control the harm of poplar canker to poplars, and the drug effect lasts for more than 7 months.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-drying agent G-103 of a pesticide composition for treating and preventing poplar canker. The quick-drying agent G-103 (a polymer auxiliary agent produced by Shenzhen Tai New Material Technology Development Co., Ltd.) 2. A quick-drying rain-resistant pesticide composition for treating and preventing poplar canker, characterized in that: The invention comprises quick-drying agent G-103, pesticide active ingredients, adhesive and auxiliary materials, wherein the quick-drying agent G-103 accounts for 0.01-20% of the total weight of the pesticide composition; the pesticide active ingredients are inorganic fungicides, accounting for 0.5-15% of the total weight of the pesticide composition; the inorganic fungicides are one or a mixture of two copper salts; and the adhesive is a synthetic adhesive, accounting for 1%-40% of the total weight of the pesticide composition.

3. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 2, characterized in that: The copper salt is copper hydroxide, copper oxide or a mixture of two or more thereof.

4. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 2, characterized in that: The adhesive is a synthetic adhesive, which is selected from one or a mixture of two or more of phenolic resin, epoxy resin, unsaturated polyester, polyurethane, urea-formaldehyde resin, polyvinyl acetate, polyaminoethylene, vinyl acetate, polyacrylate, polystyrene, polyamide, alkyd resin, cellulose, saturated polyester, reclaimed rubber, butyl rubber, styrene rubber, butadiene rubber, polysulfide rubber, phenolic-polyvinyl acetal, phenolic-butadiene rubber, epoxy-phenolic, epoxy-polysulfide rubber; preferably, the synthetic adhesive is a polyacrylic emulsion adhesive.

5. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 2, characterized in that: The auxiliary materials include organic fungicides, which are powder organic fungicides, accounting for 0.05-2% of the total weight of the pesticide composition; preferably, the organic fungicide is an azole fungicide, which is selected from one or a mixture of two or more of difenoconazole, tebuconazole, prothioconazole, cyproconazole, diniconazole, propiconazole, tricyclazole, trichlorfonazole, triflumizole, flusilazole, and metconazole; preferably, the azole fungicide is difenoconazole.

6. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 2, characterized in that: The auxiliary materials also include plant growth regulators. Preferably, the percentage of the auxiliary materials in the total weight of the pesticide composition is as follows: plant growth regulator: 0.01-0.2%.

7. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 6, characterized in that: The plant growth regulator is one or a mixture of two or more of 6-benzylaminopurine, thidiazuron, brassinolide, sodium nitrophenolate, potassium nitrophenolate, chlormequat, triacontanol, naphthylacetic acid and its salts, indolebutyric acid and its salts, indoleacetic acid and its salts, ethephon, aminoethyl ester, paclobutrazol, uniconazole, fulvic acid, mepiquat, nitrohumic acid, jasmonic acid, and thiazolinone; preferably, the plant growth regulator is a mixture of naphthylacetic acid and tridecanol.

8. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 2, characterized in that: The pesticide composition is further added with fertilizer, which is one or a mixture of two or more of macro-element fertilizer, medium-element fertilizer, trace element fertilizer and rare earth element fertilizer; the pesticide composition is further added with insecticide.

9. The quick-drying rain-resistant pesticide composition for treating and preventing poplar canker according to claim 2 or 3, characterized in that: The pesticide composition is in the form of a paste, a wettable powder, a soluble solution, a soluble granule, a soluble powder, a suspension, a suspoemulsion, a water-dispersible granule or a water-dispersible tablet.

10. Use of the pesticide composition according to any one of claims 1 to 9 for treating phloem diseases of trees and shrubs in agriculture, forestry and gardening industries.

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