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Preparation method of Suaeda salsa used as agricultural pesticide and application

A technology of Suaeda salsa and pesticides, which is applied in the direction of pesticides, botanical equipment and methods, biocides, etc., can solve the problems of huge cost, and achieve a wide range of raw materials, easy access to raw materials, and good control effects Effect

Active Publication Date: 2013-09-25
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using traditional methods to discover and develop a new pesticide requires screening tens of thousands of new compounds or more, which is costly

Method used

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  • Preparation method of Suaeda salsa used as agricultural pesticide and application
  • Preparation method of Suaeda salsa used as agricultural pesticide and application
  • Preparation method of Suaeda salsa used as agricultural pesticide and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 5 kg of dried whole herb of Suaeda salsa was extracted three times with 75% ethanol at 60°C under reflux to obtain the total extract, which was adsorbed with A8 macroporous resin and eluted with water, 30%, 50%, and 75% ethanol respectively. Collect 30%, 50% and 75% elution parts of the macroporous resin, concentrate the eluate to 1.5kg fluid extract, and obtain the total phenolic acid extract of Suaeda salsa. Place 0.5kg of surfactant (such as polysorbate-80) and 1.5kg of liquid extract of Suaeda salsa total phenolic acid extract in a homogenizer, heat to 30°C, and add 1kg of water into the homogenizer while stirring. In a texture machine, stir for 30 minutes, fully mix, cool to normal temperature, form a water emulsion, and obtain Suaeda salsa insecticide.

Embodiment 2

[0020] 50kg of fresh whole herb of Suaeda salsa was extracted three times with 95% ethanol at 60°C under reflux to obtain the total extract, which was adsorbed with D101 macroporous resin and eluted with water, 30%, 50%, and 80% ethanol respectively, Collect 30%, 50% and 80% elution sites of the macroporous resin, concentrate the eluate to 1.5 kg liquid extract, and obtain the total phenolic acid extract of Suaeda salsa. Place 0.5kg of surfactant (such as polyethylene oxide nonionic surfactant: OP-10) and 1.5kg of liquid extract of Suaeda salsa total phenolic acid extract in a homogenizer, heat to 50°C, Add 1 kg of water into the homogenizer while stirring, stir for 30 minutes, fully mix, cool to normal temperature, form water emulsion, and obtain Suaeda salsa insecticide.

Embodiment 3

[0022] Indoor toxicity measurement of Suaeda salsa insecticide prepared by embodiment 1:

[0023] Indoor tested pests include cabbage caterpillar (Pieris rapae L.) 3rd-4th instar larvae, corn armyworm (Mythimna separata Walker) 3rd instar larvae, litura litura F. 3rd instar larvae, silver print (Plusia agnata Staudinger), 3rd instar larvae of pea aphids (Pea aphids), 3rd instar larvae of rice stem borer (Chilo suppressalis Walker), 3rd instar larvae of rice stem borer (Tryporyza incertulas Walker), and two-spotted spider mite (Tetranychus urticae). All the tested pests were captured from the field, and after a period of artificial rearing indoors, the tested insects with the same size and the same age were selected for testing.

[0024] Use the leaf dipping method. When testing the activity of Pieris rapae, corn armyworm, Spodoptera litura, Silver leafworm, rice stem borer, rice stem borer, and two-spotted spider mite, the 3rd instar larvae were picked into a petri dish with ...

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Abstract

The invention relates to a plant pesticide and its preparation method. The pesticide is prepared by extraction processing of herb of Suaeda salsa. Main active components of the plant pesticide comprise: by weight, 15-20% of tamarixetin-3-O-rutinoside, 5-10% of genkwanin-4'-O-beta-D-rutinoside, 5-10% of syringaresinol-4-O-beta-D-glucoside, 5-60% of other phenolic acids, water and a surfactant. The above components are made into an emulsion in water, and the emulsion in water is diluted to be used for killing insects. The preparation method provided by the invention has advantages as follows: the raw materials are easily available; the technology is simple; and costs are low. The plant pesticide prepared by the preparation method has a very good effect of controlling aphid, armyworm, spider mite, rice stem borer and a plurality of noctuidae insects, has rapid speed of killing insects, is safe to crops, causes no pollution to the environment, and is a biopesticide preparation suitable for nuisanceless agricultural product production requirements of our country.

Description

1. Technical field: [0001] The invention relates to a Suaeda salsa insecticide and a preparation method thereof. 2. Technical background: [0002] Relevant experts believe that China should vigorously develop plant pesticides. At present, more than 80% of the pesticides used in China are organic synthetic pesticides. The large-scale use of highly toxic and high-residue organic synthetic pesticides has caused serious negative effects such as insect resistance, environmental pollution, and mass killing of beneficial organisms. As people advocate nature, protect the environment, and pay attention to food safety, the research in the field of pollution-free biological pesticide industry and biological control has gained a rare opportunity for development. Therefore, the development of domestic plant pesticides has become a new path for the development of Chinese pesticides and Chinese herbal medicines. To discover and develop a new pesticide using traditional methods requires s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/30A01P7/04A01N43/90A01N43/16
Inventor 王奇志冯煦王鸣赵友谊陈雨单宇印敏管福琴赵兴增张建华
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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