Sampling corn fields for nematodes
Commercial product testing usually occurs over several years across hundreds of locations to help minimize the impacts of variability. Conducting tests in a single or few locations over one or two crop seasons may not provide adequate information on how well the product will perform and may be of limited value.
If you have decided to conduct your own testing, you will need to collect yield data from replicated (multiple) strips (either with a yield monitor or weigh wagon) of at least three strips per treatment to account for the variability within a field. In addition, many people have expressed interest in sampling for nematodes within treatment strips to evaluate product performance on their farm.
Samples collected for corn nematode analysis can be processed at the UNL Plant and Pest Diagnostic Clinic for a fee of $25 per sample. Because laboratory procedures can vary from one lab to another, contact your lab for their sample requirements.
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