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Costusroot extract for preventing and controlling agricultural insects

A technology for extracts and plant-derived extracts, which is applied in the field of biological pesticide development to achieve the effects of various modes of action, large dosage, and reduction of environmental risks.

Inactive Publication Date: 2010-07-28
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research and application of the contact activity to agricultural pests have not been reported yet.

Method used

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  • Costusroot extract for preventing and controlling agricultural insects
  • Costusroot extract for preventing and controlling agricultural insects
  • Costusroot extract for preventing and controlling agricultural insects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Indoor bioassay results (Table 1) show that 13 Chinese herbal medicines have good insecticidal effects on N. lugens. Among them, Muxiang was first reported to be used for the control of agricultural pests, and it is a new type of plant-derived extract. The petroleum ether extract of Muxiang has a strong contact activity against brown planthoppers, and can kill all test insects after 24 hours. The ethanol extract has slightly lower contact activity against brown planthoppers, and the corrected mortality rate after 24 hours is 81.08%. The contact activity of the planthopper was the lowest, and the corrected mortality rate was 65.79% after 96 hours. It indicated that the ethanol and petroleum ether extracts of Cinnamomum sinensis had strong contact activity against brown planthopper.

[0029] Table 113 Contact activity of Chinese herbal medicine extracts on 3rd instar nymphs of brown planthopper a)

[0030] Table 1 Contact activity of extracts of 13 Chinese traditional he...

Embodiment 2

[0035] Indoor bioassay results (Table 2) show that the petroleum ether extract of Cinnamomum sinensis can kill all the tested SBPH after 24 hours, and its ethanol extract has slightly lower contact killing activity to SBPH, and the corrected mortality rate at 48 hours is 92.11 %. It indicated that the ethanol and petroleum ether extracts of Cinnamomum sinensis had strong contact activity against SBPH.

[0036] Table 2 The contact activity of woody extracts against 3rd instar nymphs of SBPH

[0037] Table 2 Contact activity of extracts of Aucklandia lappa Decne to the 3rd nymphs of Laode / phgaxstriatellus

[0038]

Embodiment 3

[0040] The laboratory test results showed that the LC of the extract of woody petroleum ether to the 3rd instar nymphs of brown planthopper50 The relative toxicity was 0.0033g / ml, and the relative toxicity was 25.0, which indicated that Muxiang had a high contact activity against brown planthopper.

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Abstract

The invention relates to an environmental friendly botanical insecticide for effectively preventing and controlling rice fulgorids, which contains the active ingredients for killing insects as follows: solvent extracts including sherwood oil of costusroot, chloroform, ethanol and the like. The active ingredients for killing insects have the advantages of killing all rice fulgorids within 24 hours by strong contact toxicity, preventing and controlling insects including brown paddy plant hoppers, small brown rice planthoppers, asparagus caterpillars, plant louses, and the like by multiple functions, and replacing chemical pesticide to reduce pollution in ecological environment and chemical pesticide residues in rice and aquatic products because of natural botanical ingredients.

Description

1. Technical field [0001] The invention belongs to the field of biopesticide development, and uses the extract of Aucklandia lappa Decne. as a novel insecticide to prevent and control rice planthoppers and other agricultural pests. 2. Background technology [0002] The rice planthopper is a major pest of rice, including the brown planthopper (Nilaparvata lugens ), and Laodelphax striatellus Fallén, etc., have the characteristics of sudden, concealed and destructive damage. Not only do they directly suck the damaged plants, but they also spread a variety of plant virus diseases. Since 1982, rice planthoppers have occurred 8 times in my country, causing serious damage to rice production. In the emergency prevention and control measures, chemical control has always occupied the main position, but the long-term and large-scale use of chemical agents not only makes the ecological environment unbalanced, but also makes many pests resistant to chemical agents, resulting in seriou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01P7/04
Inventor 方继朝李秀梅王利华刘宝生郭慧芳张志春
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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