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Pest repellent containing methyl palmitate and preparation and use methods thereof

A technology of methyl hexadecanoate 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: 2018-09-04
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 infecting host plants can have adverse effects on insects on the same host

Method used

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  • Pest repellent containing methyl palmitate and preparation and use methods thereof
  • Pest repellent containing methyl palmitate and preparation and use methods thereof
  • Pest repellent containing methyl palmitate and preparation and use methods thereof

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Experimental program
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preparation example Construction

[0031] A preparation method of a pest repellent, comprising the steps of:

[0032] (1) Preparation of mother liquor A: Accurately weigh 0.42-4.26 g of methyl hexadecanoate and dissolve it in a solvent;

[0033] (2) Preparation of auxiliary liquid B: prepare a sodium dodecylbenzenesulfonate solution with a mass fraction of 10% with deionized water;

[0034] (3) Take 10mL solution B and solution A, mix them with ultrasonic waves for 4~6 minutes;

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

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

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

[0038] The beet armyworm is the female beet armyworm.

[0039] The pest repellent of the present invention can be used for the prevention and control of pests such as beet armyworm and cotton b...

Embodiment 1

[0044] Example 1: Discovery of Pest Repellent Substances

[0045] (1) Feeding method of beet armyworm

[0046] Put the mature larvae of beet armyworm back into a 250 mL beaker with moist sand and seal it with gauze. After pupation and eclosion, the adults were transferred to another 250 mL beaker. Supplement nutrition with 10% honey water to make eggs and hatch on healthy Chinese rose leaves, and raise them to mature larvae (feeding conditions: 27°C, 70% RH, 12 h photoperiod). Let it pupate in the same way, take out the pupae and distinguish between male and female under a stereoscope, and raise the male and female pupae separately, and use them for biological tests after eclosion.

[0047] (2) Inhibitory effect of host plants infected with powdery mildew on oviposition behavior of beet armyworm adults

[0048] Put about 3 cm thick sterilized soil in two 500 ml beakers, and sprinkle appropriate amount of sterile water to moisten the soil. Select 6 fresh branches of healthy ...

Embodiment 2

[0056] Example 2: Isolation and Identification of Repellent Active Components

[0057] 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 , Table 1 shows. The monomeric compounds that can produce obvious EAD signals in the mixture were further identified by GC-MS. Among them, peak No. 5 is methyl hexadecanoate, which has a relatively large content in the mixture and produces a strong EAD signal. The results show that the natural compound (mixture) extracted from the susceptible rose plants contains methyl hexadecanoate (monomer), which may be the sensitive host identified by the female moth of beet armyworm during the selection of spawning sites One of the important information compounds.

[0058] Table 1 Volatile components of susceptibl...

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Abstract

The invention discloses a pest repellent containing methyl palmitate and preparation and use methods thereof. The pest repellent contains methyl palmitate, and ethyl alcohol and other solvents and sodium dodecyl benzene sulfonate and other auxiliary ingredients can be added. The repellent has an obvious repelling effect on pests such as beet armyworms. The main ingredient of the repellent is plantsecondary metabolites capable of being degraded in nature, and the pest repellent is free of public hazards, and has wide 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 repellant containing methyl hexadecanoate 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. h...

Claims

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Application Information

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IPC IPC(8): A01N37/02A01N25/30A01P17/00
CPCA01N25/30A01N37/02
Inventor 杨发忠杨斌朱国磊李云仙周世萍
Owner SOUTHWEST FORESTRY UNIVERSITY
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