Chrysanthemum spider mite control agent and method

Abstract

The invention belongs to the technical field of prevention and control of chrysanthemum spider mites, and discloses a chrysanthemum spider mite prevention and control agent and method, the chrysanthemum spider mite prevention and control agent is composed of a 5% d-limonene water-soluble liquid, a 30% etoxazole nitrile suspending agent and a 10% fenbutrazone, and the mass ratio of the effective components is 1: 3: 1; the prevention and control method comprises the following steps: S1, measuring the chrysanthemum spider mite prevention and control agent, and adding water to prepare an agent solution; and S2, uniformly spraying the medicament solution on the chrysanthemum leaves by using a sprayer according to the time interval. The invention solves the problem of poor prevention and treatment effect of chrysanthemum spider mites.

Description

Technical Field

[0001] The invention relates to the technical field of chrysanthemum spider mite control, and in particular to a chrysanthemum spider mite control agent and method. Background Art

[0002] Spider mites are important pests that affect the safe production of chrysanthemums. Field surveys have found that Tetrangchusurticae and Tetranychus cinnabarinus are two major pest mites, which often occur together in the field, and the peak period is from July to September. This is the flowering period of chrysanthemums. Spider mites harm the leaves, causing poor plant growth and chlorosis of the leaves; they harm the flower buds, causing the tongue-shaped petals to dehydrate and dry, and the petals to curl, inhibiting the inflorescence from blooming and losing commercial value.

[0003] The prevention and control of spider mites mostly relies on chemical agents, but due to the characteristics of spider mites such as short generation cycle, rapid reproduction, and strong environmental adaptability, unreasonable chemical control makes spider mites resistant to a variety of chemical agents. Especially when two types of spider mites occur together, the difficulty of prevention and control increases. The anti-mite agents currently on the market have poor control effects on chrysanthemum spider mites. Summary of the invention

[0004] The present invention aims to provide a chrysanthemum spider mite control agent and method, which solves the problem of poor control effect of chrysanthemum spider mites.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A chrysanthemum spider mite control agent is composed of 5% d-limonene water-soluble liquid, 30% ethidium bromide suspension and 10% benbuterol, and the mass ratio of the active ingredients is 1:3:1.

[0007] The method for controlling chrysanthemum spider mites using the above-mentioned chrysanthemum spider mite control agent comprises the following steps:

[0008] S1. Measure the chrysanthemum spider mite control agent and add water to make a drug solution;

[0009] S2. Use a sprayer to evenly spray the drug solution on the chrysanthemum leaves at time intervals.

[0010] Furthermore, in S2, pesticides were applied once at the early stage of spider mite infestation; during the period of severe damage, the time interval was 7-10 days and the number of applications was 2-3 times.

[0011] The beneficial effects of the technical solution are:

[0012] 1. The present invention

[0013] The formulation materials used are abundant, low-cost, environmentally friendly, and easy to obtain;

[0014] 2. The chrysanthemum spider mite control agent of the present invention is highly efficient, low-toxic, environmentally friendly, does not affect the quality of flowers, has good control effect on chrysanthemum spider mites, and exhibits good rapidity and persistence; specifically, the compound agent is applied in combination with agents with different mite killing mechanisms, has a strong inhibitory effect on the chrysanthemum spider mite population, and significantly improves the field control effect of spider mites. In addition, the combined application of multiple agents can effectively delay the development of drug resistance. It provides a safe and effective measure for the control of chrysanthemum spider mites with severe drug resistance, and provides a scientific basis for reducing the amount of acaricides and increasing their efficiency, and for the safe production of chrysanthemums. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the embodiments:

[0016] Example 1

[0017] A chrysanthemum spider mite control agent is composed of 5% d-limonene water-soluble liquid, 30% ethidium bromide suspension and 10% benbuterol, and the mass ratio of the active ingredients is 1:3:1.

[0018] The method for controlling chrysanthemum spider mites using the above-mentioned chrysanthemum spider mite control agent comprises the following steps:

[0019] S1. Measure the chrysanthemum spider mite control agent and add water to make a solution; wherein, the effective agent components of 5% d-limonene water-soluble liquid, 30% ethidium sulfamethoxam suspension, and 10% benbuterol required per hectare of chrysanthemum are 270g, 810g, and 270g, respectively, and the control agent used per hectare needs to be diluted with 2700kg of water;

[0020] S2. In the early stage of spider mite infestation, use a sprayer to evenly spray the pesticide on the chrysanthemum leaves, and apply the pesticide once; during the period of severe damage, apply the pesticide 2-3 times at intervals of 7-10 days. Use a sprayer to evenly spray the pesticide on the chrysanthemum leaves.

[0021] Comparative Example 1

[0022] A chrysanthemum spider mite control agent is composed of 5% d-limonene water-soluble liquid and 15% pyridabenzyl water emulsion, and the mass ratio of the active ingredients is 27:40.

[0023] The effective drug component weights of 5% d-limonene water-soluble liquid and 15% pyridabenzane water emulsion required for each hectare of chrysanthemum are 270g and 400g respectively, and the amount of the control agent used per hectare needs to be diluted with 2700kg of water.

[0024] Comparative Example 2

[0025] A chrysanthemum spider mite control agent, which is a 20.0% cyflumetofen suspension, and 540g of effective agent components are required to be diluted with 2700kg of water per hectare of chrysanthemum.

[0026] Comparative Example 3

[0027] A chrysanthemum spider mite control agent, which is a 43.0% bifenazate suspension, and the effective agent component weight required for each hectare of chrysanthemum is 580g and 2700kg of water.

[0028] Comparative Example 4

[0029] A chrysanthemum spider mite control agent, which is 1.8% avermectin emulsifiable concentrate. The effective agent component weight required for each hectare of chrysanthemum is 20g and diluted with 2700kg of water.

[0030] Comparative Example 5

[0031] A chrysanthemum spider mite control agent, which is a 30% ethidium sulfamethoxam suspension, and each hectare of chrysanthemum requires 810g of effective agent components to be diluted with 2700kg of water.

[0032] Comparative Example 6

[0033] A chrysanthemum spider mite control agent, which is a 15% pyridabenzyl water emulsion. The effective agent component weight per hectare of chrysanthemum is 400g and is diluted with 2700kg of water.

[0034] With reference to the Guidelines for Field Efficacy Tests of Pesticides (I) GB / T 17980.17-2000 Acaricides for Controlling Spider Mites on Beans and Vegetables, and GB / T17980.7-2000 Acaricides for Controlling Spider Mites on Apples, field efficacy tests were carried out using the chrysanthemum spider mite control agents of Example 1 and Comparative Examples 1 to 6.

[0035] Specifically, three replicates were set for each treatment, with 30 chrysanthemum plants in each plot, of which 10 chrysanthemum leaves with sufficient spider mites were selected for each plant. The conventional planting density of chrysanthemums was 10 cm*10 cm, and the plot area was about 0.4 m 2 , that is, each treatment area is about 1.2m 2 The field efficacy test was divided into eight groups, of which seven groups used a backpack sprayer to evenly spray the chrysanthemum spider mite control agent solutions of Example 1 and Comparative Examples 1 to Comparative Examples 6 on the chrysanthemum leaves, and the other group used a backpack sprayer to evenly spray an equal amount of clean water on the chrysanthemum leaves. The number of spider mites in each insect stage was recorded before application, 1d, 3d and 7d after application, and the total number of spider mites was counted to calculate the control effect of the agent. The control effect measurement results are shown in Table 1.

[0036] Mite population reduction rate = (number of mites before medication - number of mites after medication) / number of mites before medication × 100%

[0037] Corrected control effect = (mite population reduction rate in treatment area - mite population reduction rate in control area) / (1 - mite population reduction rate in control area) × 100%;

[0038] Table 1 Results of field control efficacy of different pesticides against chrysanthemum spider mites

[0039]

[0040] As shown in Table 1, after 1 day of application, the compound preparation of Example 1, 5% d-limonene water-soluble liquid (SL) + 30% ethidium sulfamethoxam suspension (SC) + 10% benbuterol had the best control effect, reaching 87.82%, and the control effect difference with other treatments reached a significant level; followed by the compound preparation of Comparative Example 1, 5% d-limonene SL + 15% benbuterol emulsion (EW), the single dose of 30% ethidium sulfamethoxam SC in Comparative Example 5, and the single dose of 15% benbuterol EW in Comparative Example 6, with control effects of 70.22%, 69.18% and 51.36 respectively; the three single doses of 20.0% butyric acid SC in Comparative Example 2, 43.0% bifenazate SC in Comparative Example 3, and 1.8% avermectin emulsifiable concentrate (EC) in Comparative Example 4 had poor control effects, which were significantly lower than other treatments;

[0041] After 3 days of application, the control effect of each treatment increased, among which the composite preparation of Example 1, 5% d-limonene SL + 30% ethidium SC + 10% benbuterol, had the best control effect, significantly higher than other treatments, reaching 95.31%; except for 1.8% avermectin EC in Comparative Example 4, the control effects of other treatments all reached more than 55%;

[0042] After 7 days of application, the control effect of each treatment was slightly decreased compared with that at 3 days, among which the control effect of 5% d-limonene SL + 30% ethoxafen SC + 10% benbuterol in Example 1 was 92.35%, which was significantly higher than that of other treatments; followed by 5% d-limonene SL + 15% benbuterol EW, 30% ethoxafen SC and 20.0% benbuterol SC in Comparative Example 2, which were 70.3%, 66.21% and 58.89% respectively; the control effects of 43.0% bifenazate SC in Comparative Example 3 and 15% benbuterol EW in Comparative Example 6 were poor, which were 30.26% and 14.82% respectively; the control effect of 1.8% avermectin EC in Comparative Example 4 was -22.67%, which had lost its control effect.

[0043] In summary, 1-7 days after application, the control effect of the compound preparation of Example 1, 5% d-limonene SL + 30% ethidium SC + 10% benbuterol, on chrysanthemum spider mites was above 87%, showing good rapidity and persistence. Overall, the control effect of the compound preparation treatment was significantly higher than that of the single-dose treatment, indicating that chrysanthemum spider mites have strong resistance to long-term use of a single agent; in addition, the characteristics of spider mites such as parthenogenetic reproduction, strong reproductive capacity, and short generation cycle may also be the reasons for the accelerated development of resistance to a single agent; and the compound agent has a strong inhibitory effect on the chrysanthemum spider mite population through the combined application of agents with different acaricide mechanisms, significantly improving the field control effect of spider mites. In addition, the combined application of multiple agents can effectively delay the development of resistance, providing a safe and effective measure for the prevention and control of chrysanthemum spider mites with severe resistance, and providing a scientific basis for reducing the amount of acaricides and increasing their efficiency, and for the safe production of chrysanthemums.

[0044] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A chrysanthemum spider mite control agent, characterized in that: It is composed of 5% d-limonene water-soluble liquid, 30% ethidium bromide suspension and 10% benbuterol, and the mass ratio of the active ingredients is 1:3:

1.

2. A method for controlling chrysanthemum spider mites using the chrysanthemum spider mite control agent according to claim 1, characterized in that: The steps include: S1. Measure the chrysanthemum spider mite control agent and add water to make a drug solution; S2. Use a sprayer to evenly spray the drug solution on the chrysanthemum leaves at time intervals.

3. The method for controlling chrysanthemum spider mites according to claim 2, characterized in that: In S2, pesticides were applied once at the early stage of spider mite infestation; during the period of severe damage, the interval was 7-10 days and the number of applications was 2-3 times.

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