Soybean Cyst Nematode is a major pest in all major soybean production regions of Michigan.
For this project, we propose a statewide survey to assess the distribution and prevalence of SCN, determine SCN HG Types within sampled regions, and relate production practices to SCN populations. With funds from both MSPC and Michigan Sugar we will also sample areas where soybeans and sugar beets are often grown in rotation to determine if a hybrid nematode exists and is capable of feeding on both crops.

To conduct the survey, we will work in cooperation with MSPC, Michigan Sugar and local extension agents to form a list of growers in the state, from each of the 7 soybean districts. We will then contact each grower and see if they would be willing to participate in the survey. Those willing to participate will be asked to mail us soil samples from their fields. We will send a pre-paid shipping label along with sample bags and a survey to complete. The survey will assess the growers location, sample location, typical rotation, soybean variety grown, use of cover crops, nematicides, composts and more.
As samples arrive, we will extract nematodes to determine the population counts and then perform HG Type testing. Results will be relayed to growers and compiled in order to analyze and find trends that may influence SCN distribution, population and HG Type.

To determine if a BCN/SCN hybrid exists, nematodes collected from areas of sugar beet and soybean rotation will be used to inoculate greenhouse grown sugar beets and soybeans. Four replicates of each plant will be inoculated with the field collected nematodes. A negative control, of non-inoculated plants, and SCN inoculated plants will serve as the positive control. We will monitor plant health and nematode reproduction to determine if the suspected hybrid nematodes can reproduce on both soybeans and sugar beets.