Pest repellent containing methyl myristate and preparation and use method thereof

A technology of methyl tetradecanoate and pest repellent, which is applied in the directions of animal repellent, botanical equipment and method, pest repellent, etc., to achieve the effects of realizing pollution-free control, avoiding control difficulties and high efficiency

Inactive Publication Date: 2018-07-20
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many studies have shown that obligate parasitic fungi infect

Method used

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  • Pest repellent containing methyl myristate and preparation and use method thereof
  • Pest repellent containing methyl myristate and preparation and use method thereof
  • Pest repellent containing methyl myristate and preparation and use method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0031] A preparation method of a pest repellent includes the following steps:

[0032] (1) Preparation of mother liquor A: accurately weigh 0.87~8.70 g methyl myristate and dissolve it with solvent;

[0033] (2) Preparation of auxiliary liquid B: prepare 10% sodium dodecylbenzene sulfonate solution with deionized water;

[0034] (3) Take 10 mL of B solution and mix with A solution, and mix well with ultrasonic for 4-6 min;

[0035] (4) Use a solvent to dilute the volume to 1 L to obtain the pest repellent.

[0036] The method of using the pest repellent is to dilute the pest repellent with ethanol or water by 0 to 5 times, and spray it directly on the flower buds and branches of the plant.

[0037] The pests are beet armyworm and / or cotton bollworm.

[0038] The said beet armyworm is a female beet armyworm.

[0039] The pest repellent of the present invention can be used for the prevention and control of beet armyworm, cotton bollworm and other pests, and has the best repellent effect on b...

Example Embodiment

[0043] Example 1: Discovery of pest repellent substances

[0044] (1) Feeding method of beet armyworm

[0045] Place the collected mature larvae of Spodoptera exigua into a 250 mL beaker lined with moist sand and seal with gauze. After pupation and emergence, the adults are transferred to another 250 mL beaker. Supplement nutrition with 10% honey water to lay eggs and hatch on healthy Chinese rose leaves, and raise them to mature larvae (feeding conditions: 27℃, 70% RH, 12 h photoperiod). The pupae were pupated in the same way, and the pupae were taken out under a stereoscope to distinguish males and females. The male and female pupae were reared separately and used for biological testing after emergence.

[0046] (2) The inhibitory effect of host plant infection with powdery mildew on the oviposition behavior of adults of beet armyworm

[0047] Put about 3 cm of sterile soil in 2 500 ml beakers, and sprinkle an appropriate amount of sterile water to moisten the soil. Select healthy...

Example Embodiment

[0055] Example 2: Separation and identification of repellent active ingredients

[0056] The headspace dynamic adsorption method was used to extract the volatile component mixture of Chinese rose leaves infected with powdery mildew, and the mixture was analyzed and tested by gas chromatography-antenna electrophysiology (GC-EAD). The results are as follows image 3 , Figure 4 , Shown in Table 1. The monomer compounds in the mixture that can produce obvious EAD signals were further identified by GC-MS. Among them, the No. 3 peak is methyl myristate, which has a relatively large content in the mixture and produces a strong EAD signal. The results showed that the natural compound (mixture) extracted from the susceptible rose plant contains methyl myristate (monomer), which may be used by the female beet armyworm to identify the susceptible host in the selection process of the egg laying site One of the important information compounds.

[0057] Table 1 Volatile components of suscepti...

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Abstract

The invention discloses a pest repellent containing methyl myristate and a preparation and use method thereof. The pest repellent comprises methyl myristate, and a solvent such as ethanol, sodium dodecyl benzene sulfonate and other auxiliary components can also be added. The repellent has a significant repelling effect on pests such as beet armyworm. Moreover, the main component of the repellent is a plant secondary metabolite, so that the repellent is degradable in nature; the repellent is a pollution-free pest repellent and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of plant protection, further belongs to the technical field of biological pesticide control, and specifically relates to a pest repellent containing methyl myristate and a preparation and use method thereof. Background technique [0002] With the continuous development of modern agriculture, the protection of the ecological environment has become more popular. At the same time, the concept of plant protection continues to evolve and change. In the process of pest control, it has become a consensus in the industry to put "prevention" first, rather than "treating" pest outbreaks. It provides a new way to solve the "3R" problem. Botanical pesticides have the advantages of diverse biological activities (insecticide, bactericide, weed control and various modes of action), no residue, safety to the environment, safety to higher animals and natural enemies, and pests are not easy to develop drug resistance. hotsp...

Claims

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Application Information

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IPC IPC(8): A01N37/02A01N25/30A01P17/00
CPCA01N25/30A01N37/02
Inventor 杨发忠李云仙杨斌周世萍朱国磊
Owner SOUTHWEST FORESTRY UNIVERSITY
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