Your browser does not support JavaScript! Your browser does not support embedded objects.


We provide diagnosis and make recommendations for plant parasitic nematodes associated with field crops, vegetable crops, turf, ornamentals and trees. Specifically for the soybean growers and in order to help growers make better SCN management decisions, we offer the following services:

Processing soil samples and making proper recommendations: as was described earlier. The cost is $10/sample for this service.

SCN race test: Determining the SCN race in a given soil sample at a cost of $50/sample. The turn-around-time for this test is about 45 days. However, if proper inoculum levels of nematodes cannot be extracted from the soil we will have to plant these samples in the greenhouse with susceptible soybean until we are able to extract enough nematodes to perform the test. This additional process will add $20/sample to the cost and an extra 45 days to the duration of the test. We require at least a gallon of infested soil to perform the race test.

SCN variety test: This unique and confidential test is a more practical alternative to the race test. We ask the submitter to provide us with at least a gallon of infested soil and 30 seeds from any soybean cultivar for which they need the resistance information. We inoculate the submitted cultivars with nematodes extracted from the submitted soil. In about 45 days we provide the submitters with the data. We don't compile or publish the data gathered through these tests. The cost for this test is $50 for up to 5 cultivar samples and an extra $10/additional sample. As we explained for the race test, the same additional cost and time will apply if we need to increase your nematodes to get enough inoculum to perform this test.

Root knot nematode bioassay: Determining the RKN presence and severity at the cost of $30/sample. We ask submitter to provide us with at least a pint of soil. We plant susceptible tomato seedlings in the soil and in about 45 days we provide submitter with the data on presence and the severity rate from scale of 0-10. Soil samples intended for use in this test should not be dried or be exposed to high heat.

Instructions on how to submit samples here

Send samples with completed Samples Submit Form to:
  • Nematology Laboratory
  • Department of Entomology
  • Purdue University
  • 901 W. State Street
  • West Lafayette, IN 47907-2089.