Application of sodium phenate in preparation of termite attractant

Abstract

The invention discloses an application of sodium phenate in preparation of a termite attractant. The termite attractant comprises sodium phenate and imidacloprid. The trapping effect of sodium phenate can attract termites, so that the termites actively contact with imidacloprid, imidacloprid plays an insecticidal role, the combination of sodium phenate and imidacloprid improves the termite trapping and killing efficiency, and compared with a single attractant or insecticide, the termite trapping and killing agent can more effectively control termite harm.

Description

Technical Field

[0001] The present invention relates to the technical field of pest control, and more specifically, to the application of sodium phenolate in the preparation of termite attractants and poisons. Background Art

[0002] Coptotermes formosanus, belonging to Rhinotermitidae, Isoptera, is native to the southeastern coast of China and Taiwan. Coptotermes formosanus feeds on wood and cellulose-containing materials, has extremely strong reproductive ability, adaptability and destructiveness, and can quickly occupy trees, houses and other wooden structures, causing serious economic losses. In addition, its unique colony structure and highly social behavior make it difficult to control, and it is known as the "super pest" and is one of the important prevention and control targets.

[0003] The control of termites mainly relies on chemical control, and the common methods include chemical barrier method and attractant and poison method. The chemical barrier method forms a toxic barrier by adding insecticides (such as imidacloprid, fipronil, etc.) to sand or soil to kill termites or prevent their invasion. The attractant and poison method refers to using foods preferred by termites (such as pinewood, sugarcane, cellulose powder, etc.) as baits, adding insecticides with slow lethal effects to make poisonous baits, and using the trophallaxis characteristics of termites to spread the insecticides throughout the ant colony, ultimately achieving the purpose of destroying the nest.

[0004] In the traditional attractant and poison method, termites are attracted to feed by the smell emitted by the bait itself. However, due to the limited diffusion range of the bait smell, the aggregation efficiency of termites is low, thus reducing the overall control efficiency. To solve this problem, in recent years, exogenous attractants have been introduced into the attractant and poison method. By artificially synthesizing or extracting chemical substances with strong attracting effects and compounding them with poisonous baits, the attracting ability of the baits can be significantly improved.

[0005] Therefore, there is an urgent need to develop a highly efficient and stable compound attractant and poison that combines exogenous attractants and insecticides to improve the control effect of the attractant and poison method for termites. Summary of the Invention

[0006] In view of this, in response to the current deficiencies of termite control baits in terms of attractiveness, the present invention provides the application of sodium phenolate in the preparation of termite attractants and poisons. By scientifically compounding sodium phenolate with insecticides, more termites are attracted to feed on the bait, which helps the effective spread of the insecticide in the termite nest and improves the control effect as a whole.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The application of sodium phenolate in the preparation of termite attractants and poisons.

[0009] Sodium phenolate has both polar (-COONa) and non-polar characteristics and is soluble in water. Compared with phenol in the prior art (insoluble in water), there are more choices in the application of compound insecticides.

[0010] Preferably, the termite attractant includes sodium phenolate and imidacloprid, and the mass ratio of sodium phenolate to imidacloprid is 1:(25-50).

[0011] It can be seen from the above technical solutions that compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. High efficiency: The attracting effect of sodium phenolate can attract termites, enabling them to actively contact imidacloprid, and then imidacloprid exerts its insecticidal effect. The combination of the two improves the trapping and killing efficiency of termites, and can more effectively control termite damage compared with a single attractant or insecticide.

[0013] 2. Economy: Acetone is used as the mixing carrier of imidacloprid. The cost of acetone is relatively low and it is easy to obtain. While ensuring the product effect, it helps to reduce the production cost and improve the market competitiveness of the product.

[0014] 3. Environmental protection: The usage amounts of sodium phenolate and imidacloprid can be accurately controlled through the formula. On the basis of effectively preventing and controlling termites, it can reduce chemical pollution to the environment, and has less impact on the ecological environment compared with some highly toxic and broad-spectrum insecticides.

[0015] 4. Wide applicability: This attractant can be applied to various termite species. Whether it is soil-dwelling termites or wood-dwelling termites, etc., they can be attracted by the attracting effect of sodium phenolate, and then the insecticidal effect of imidacloprid can be exerted, with a wide range of applicability. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0017] Figure 1 It is a photo of the test device for Example 1;

[0018] Figure 2 It is a test result graph of the termite attracting and aggregating behavior in Example 1;

[0019] Figure 3 It is a test result graph of the termite attracting and aggregating behavior in Example 2. Detailed Embodiments

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Example 1

[0022] (1) Imidacloprid was dissolved in acetone to prepare an acetone solution with a concentration of 500 μg / mL. 30 mL of the acetone solution was measured and added to a bag containing 600 g of dry sand with a particle size of 1 mm. After mixing evenly and waiting for the acetone to volatilize, dry sand with an imidacloprid content of 25 μg / g was obtained. An equal amount of acetone was added to another bag of dry sand as a control. Before the experiment, 90 mL of distilled water was added to the treated and untreated dry sand respectively to obtain treated and untreated wet sand with a water content of 15%.

[0023] (2) 24 g of the treated and untreated wet sand were respectively weighed and made into cubes with a size of 4.0 × 4.0 × 1.0 cm [length × width × height]. Sand blocks with and without sodium phenolate were symmetrically placed on both sides of a petri dish (bottom diameter: 15 cm), and a moist pine wood chip (2.0 × 2.0 × 0.1 cm [length × width × height]) was placed in the center directly above each sand block as a food source for termites ( Figure 1 ). 25 termites (23 worker termites and 2 soldier termites) were released into the middle of the petri dish, and after covering, it was sealed with plastic wrap to maintain humidity. The test device was placed in an environment of 25 ± 1 °C, and the direction and position of the device were random. The number of live termites on the surfaces of the sand blocks on both sides and other areas in the petri dish at the 10th, 20th, 30th, 40th, 50th, and 60th minutes was recorded (the statistical results are as Figure 2 shown).

[0024] Experimental results: In this experiment, there was no significant difference in the number of termites aggregated in the treated wet sand and the untreated wet sand, and the addition of imidacloprid (insecticide) alone to the wet sand had no attracting effect on termites.

[0025] Example 2

[0026] (1) Dissolve imidacloprid in acetone to prepare an acetone solution with a concentration of 500 μg / mL, and dissolve sodium phenolate in distilled water to prepare a sodium phenolate solution with a concentration of 12 μg / mL. Measure 30 mL of the acetone solution and add it to a bag containing 600 g of dry sand with a particle size of 1 mm. Mix evenly. After the acetone has evaporated, dry sand with an imidacloprid content of 25 μg / g is obtained. Then, measure 50 mL of the sodium phenolate solution and add it thereto. After that, measure 40 mL of distilled water and add it thereto. After mixing evenly, wet sand with an imidacloprid content of 25 μg / g, a sodium phenolate content of 1 μg / g, and a humidity of 15% is obtained. Add an equal amount of distilled water to another bag of dry sand as a control.

[0027] (2) The experimental method is the same as that in Embodiment 1, and the statistical results are as Figure 3 shown.

[0028] (3) Experimental results: In this experiment, the number of termites aggregated in the treated wet sand was significantly higher than that in the untreated wet sand. Adding a trapping agent prepared by compounding sodium phenolate and imidacloprid (insecticide) to the wet sand had a significant attracting effect on termites.

[0029] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. Application of sodium phenolate in preparing termite attractant-kill agent.

2. The application of sodium phenolate in the preparation of a termite attractant and killer according to claim 1, characterized in that, The termite attractant-kill agent includes sodium phenolate and imidacloprid, and the mass ratio of sodium phenolate to imidacloprid is 1:(25-50).

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