A kind of plant essential oil preparation capable of preventing and controlling adult whitefly pests and its preparation method and application

Abstract

The invention discloses a plant essential oil preparation capable of preventing and controlling aleyrodidae adult pests as well as a preparation method and application thereof. The preparation comprises the following components by weight percent content: 40-60% of plant essential oil, 5% of a cosolvent, 10-15% of an emulsifier, 1-3% of an antifreezing agent and the balance of a solvent. The preparation has a good control effect on aleyrodidae adult pests, such as aleurocanthus spiniferus, aleurocanthus woglumi ashby, trialeurodes vaporariorum, bemisia tabaci and dialeurodes citri, and is especially quite good in fast-acting property, the control efficiency can reach 90% or above 0.5 h after application, and the natural enemies of ladybird, and the like, are not killed and hurt; the preparation is used for preventing and controlling aleyrodidae adult pests, can be sprayed in large fields with a conventional sprayer, can be directly applied in a greenhouse with a thermal aerosol sprayer, can be used as an environment-friendly smoke agent of the thermal aerosol sprayer, and is simple in processing technology, various in application methods, efficient, safe and environment-friendly.

Description

technical field [0001] The present invention relates to a plant essential oil preparation (hereinafter referred to as GCS preparation) which can prevent and control adults of whitefly pests, in particular to a mixture of two or more of citronella oil, fragrant birch oil and litsea cubeba oil in any ratio as the main active ingredients. A preparation with a mass content of 40-60% and its preparation method and application. Background technique [0002] Whitefly pests are widely distributed on grain and oil crops, fruit forests, vegetables, garden flowers and other plants. Whiteflies use piercing-sucking mouthparts to suck plant juice, causing plant weakness, and secreting a large amount of honeydew-induced bituminous soot, which seriously affects plant photosynthesis. The role of plant growth causes poor plant growth and reduces its economic value and ornamental value; spreads a variety of plant viruses; whitefly pests are not only small in size, rapid in reproduction, but al...

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Problems solved by technology

[0002] Whitefly pests are widely distributed on grain and oil crops, fruit forests, vegetables, garden flowers and other plants. Whiteflies use piercing-sucking mouthparts to suck plant juice, causing plant weakness, and secreting a large amount of honeydew-induced bituminous soot, which seriously affects plant photosynthesis. The role of plant growth causes poor plant growth and reduces its economic value and ornamental value; spreads a variety of plant viruses; whitefly pests are not only small in size, rapid in reproduction, but also have many generations in a year, with serious generation overlap, and some types of nymphs hide in The back of the middle and lower leaves of plants (such as tea tree blackthorn whitefly), so it is difficult to control

[0003] Therefore, the control of adult whitefly pests is the key to the control of such pests; the current control methods include chemical control and insect trap control. In chemical control, because of the large number of generations and serious overlapping of generations, multiple applications are required pesticides, which will inevitably lead to excessive chemical pesticide residues and easy to produce resistance; and in the control of insect traps, the number of insect traps used per mu is large, and a large number of manual installations are required in the field. The cost of boards and labor is high, and When it breaks out into a disaster, the control effect of this measure is very small

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