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Application of alien invasive plant wedelia trilobata in killing ampullaria gigas

A technology of wedelia trilobata and foreign invasion, which is applied to the application field of the invasive plant wedelia trilobata and killing apple snails, can solve the problems of large research space for plant molluscicide, and achieve the effects of easy acquisition, cost saving and pollution reduction

Inactive Publication Date: 2013-04-17
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, about 1,500 species of plants have been used for molluscicidal activity tests, but this is only a small part of the many plant species on the earth, and there is still a lot of research space for plant molluscicides

Method used

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  • Application of alien invasive plant wedelia trilobata in killing ampullaria gigas
  • Application of alien invasive plant wedelia trilobata in killing ampullaria gigas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this study, the invasive plant Wedelia trilobata was used to kill apple snails in rice fields. The specific steps include:

[0020] 1. Collect the invasive plant Wedelia trilobata, wash the plant material, and dry it in the shade in a ventilated place;

[0021] 2. Dry the shredded plant material in a constant temperature blast drying oven at 60°C for 24 hours, crush it through a plant sample grinder, pass through a 40-mesh sieve, put the dry powder sample into a plastic bag and seal it, and place it in a desiccator Save it for later use.

[0022] 3. When in use, add 10 g / L dry powder of Wedelia trifida into the water body for 3 days to completely kill the apple snails.

[0023] The method provided by the invention can effectively kill apple snails, and has been verified through toxicity tests. Put apple snails in a plastic basin, add 1.0 L of water (water temperature 25-30°C), add 5 g and 10 g of Wedelia trifida dry powder, the mortality rate of apple snai...

Embodiment 2

[0028] Collect Wedelia trilobata, wash Wedelia trilobata, dry in the shade in a ventilated place, and cut into pieces;

[0029] The shredded Wedelia trilobata was dried in a constant temperature blast drying oven at 60°C for 24 h, pulverized by a plant sample grinder, passed through a 40-mesh sieve, and the obtained Wedelia trilobata dry powder was sealed in a plastic bag and placed in Store in a desiccator for later use.

[0030] Because adult apple snails consume a lot of food, they are the most harmful to rice, and the individual has strong fecundity. Therefore, the toxicity of the dry powder of Wedelia trilobata to adult apple snails was tested in this example. Put 80 birds / m in the pot 2 Adult apple snails (snail weight 6.5 g or more), 1 L of clear water (water temperature 25-30°C), and the dosage of Wedelia trilobata dry powder in each treatment were 2 g, 5 g, 10 g, 15 g, and 20 g, respectively. It was observed at different times that after adding 10 g / L dry powder of ...

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Abstract

The invention belongs to the environment-friendly technical field of gigas-killing plant resource utilization and specifically relates to a method for killing harmful ampullaria gigas invading the area by using the alien invasive plant wedelia trilobata of south China. According to the method, the ampullaria gigas is directly killed by feeding the dried powder of the invasive plant wedelia trilobata in water of a rice field; and the method is characterized in that the used plant is wedelia trilobata from the composite family, and the dose of the wedelia trilobata dried powder is 10g / L. The method has the advantages that the plant material wedelia trilobata is the general alien invasive plant in south China, so the materials are easily available, and the ampullaria gigas can be effectively killed under a certain feeding amount.

Description

technical field [0001] The invention belongs to the environment-friendly technical field of utilization of snail-killing plant resources, and in particular relates to the application of the alien invasive plant Wedelia trifida in killing apple snails and a method for the application. Background technique [0002] Apple snail is a dangerous and harmful invasive organism that has attracted much attention in the world in recent years. It has strong stress resistance, miscellaneous feeding habits, large food intake, astonishing fecundity and extremely fast growth rate. It has great impact on rice production and rice field biodiversity in southern my country The danger is serious. At present, the agents used to control apple snails in my country are basically chemical agents. In addition to easily polluting the environment, there are also problems of high price and high toxicity to non-target organisms. The development and utilization of molluscicidal plant resources is one of th...

Claims

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Application Information

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IPC IPC(8): A01N65/12A01P9/00
CPCY02A90/40
Inventor 章家恩赵本良方丽罗明珠全国明
Owner SOUTH CHINA AGRI UNIV
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