Golden Nematode Program Manual - Phytosanitary Resources

Procedures: Preparation, Disinfection, and Clean-up
Survey Preparation
There is little likelihood of finding nematode in fields planted to a host
crop for less than three (3) consecutive years. If crop rotation is
practiced on a field, then a longer period of time (more than 3
consecutive years) is required for the nematode to build up to a
detectable level.
Soil Conditions
If the soil is too wet, then delay survey until the ground is dry.
EXAMPLE
If you can take a clump or handful of soil and squeeze the soil into a ball, then
the soil is too wet to sample.
Survey Preparation
Review the survey process listed in Figure 2-2-1, then continue to
Step 1: Confirm the Reason for the Survey Is Valid.
1. Confirm the reason for conducting the survey is valid.
2. Determine the type of survey to conduct.
3. Prepare for the survey.
4. Assemble the survey crew.
5. Prepare at the survey site.
6. Conduct the survey.
7. Clean-up and disinfect survey materials and equipment.
8. Transport samples to the laboratory.
FIGURE 2-2-1 Summary of the Survey Process
Step 1: Confirm the Reason for the Survey Is Valid
Any of the following conditions are valid for conducting a golden
nematode survey:
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Farmer requests export certification for freedom from golden
nematode (voluntary survey)
Land exposure to possible golden nematode infestation
(mandatory survey)
Potato varieties susceptible to golden nematode have been
planted and grown three (3) years or more, consecutively or in
rotation (mandatory survey)
Regulatory violation (i.e., someone moves equipment from an
area that has golden nematode to an area that does not have
golden nematode infestation (mandatory survey)
Seed potato certification (i.e., grower needs to certify potatoes for
export certification or interstate movement) (mandatory survey)
07/2008-01 Golden Nematode Program Manual 2-2-3
PPQ