Soil A composite sample of approximately 1 pint of soil is best for an accurate routine test to diagnose a plant problem or confirm nematode populations. . Plants It is best to take a composite sample (10 or more root subsamples within the 5-acre area) for an accurate routine test for root-dwelling nematodes.
How do you diagnose nematode problems?
A laboratory analysis of soil, root, or shoot system tissue is necessary for diagnosis or long-term avoidance of plant-parasitic nematode problems.
How do you test nematodes in soil?
Nematodes that are present in soil are generally very small (0.3 to 1.5 mm) and cannot be detected by the naked eye. For this reason, taking soil samples for microscopic examination is the most reliable way to determine which nematodes are in a field.
How do you sample for nematodes?
Recommended sampling procedures are to collect soil cores or soil samples (if using a shovel) from a depth of 6-8 inches from at least 20 representative locations across the field. Soil core locations should target areas where the crop appears stunted, chlorotic or weak, and nematode damage is suspected.
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