Nematode Extractor- October 2011
[Video shows various pictures of soybean fields with specialists or agents in fields.]
[Title Slide – Nematode Extractor. Your Arkansas Soybean Podcast. Presented by University of Arkansas Division of Agriculture Research and Extension U of A System, Arkansas Soybean Promotion Board.]
[Title slide – How do they extract nematodes from soil samples?]
[Terry Kirkpatrick, Professor – Plant Pathology, University of Arkansas Southwest Research and Extension Center standing next to a semi-automatic elutriator.] This is our semi-automatic elutriator; this is a machine that is consistent in its ability to extract nematodes from the soil.
[sound of machine turning on] [Devany Crippen – Program Associate – Plant Pathology at the University of Arkansas Agriculture Research and Extension Center conducts demonstration. Devany dumps soil samples into hoppers and adds water. Water runs over soils sample to separate debris from nematodes into sieves.]
[Terry Kirkpatrick] A little orientation: The nematodes in the soil go in and are mixed with water and air. They cascade over a series of sieves, a large one to trap all the big particles and large sand particles and roots, and then into a sample-slitter, and then ultimately we catch the cyst, the nematodes, on the fine mesh sieve.
This separates the nematodes from the soil. Nematodes are rolled around in there to get them out of the soil. The nematodes are light and they float. Alright? They come through here. [Points to machine] They are certainly too small to get trapped here. What this is trapping is all the roots, and rocks, and sticks, and everything. Alright? [The flow] Comes into this sample-splitter and then the nematodes come out on this small sieve. See the nematodes are here. [Points to fine-meshed sieve.]
[Narrator] Your Arkansas Soybean Podcast is a production of the University of Arkansas Division of Agriculture, and was funded impart by the Arkansas Soybean Promotion Board. For more information on soybean farming in Arkansas contact your local county extension office.
[Title slide – Your Arkansas Soybean Podcast. Video shows various pictures of soybean fields with specialists or agents in fields. U of A Division of Agriculture Research and Extension University of Arkansas System, Arkansas Soybean Promotion Board. For more information on soybean farming in Arkansas contact your county extension office or go to www.uaex.edu. Your Arkansas Soybean Podcast.]