LOQ = Limit of Quantification.
ROC = Residues of Concern.

1 If in The Radiotracer Study There Is No
Characterization/ Identification of The TRR
(Total Radioactive Residues), Then The
ROC = TRR.

Note That If Tolerances Are Needed, A
Valid Enforcement Analytical Method Is
Required.

Appendix 2: Decision Tree for the Residue Chemistry Data Requirements of Potato Seed-Piece (PSP) Treatments

Yes

NF, No Additional Data Required. No Tolerances Required,

All Relevant Residue Chemistry Data Requirements Must Be
Fulfilled, Unless Other Data Are Available (See Option 2 Or 3).

Yes

No Additional Potato Metabolism
Study Required.





>





No

Potato Metabolism Study
May Be Required
(PSP Or In-Furrow Treatments).

>*

Full Complement
of PSP Field Trials

and Potato
Processing Data
Required.

Implies That There Are Adequate
Ruminant Metabolism Data, Analytical
Methods and Rotational Crop Data

PSP Field Trials Are Required Even If
The PSP Rate Is Similar to The In-Furrow
Rate Unless Bridging Trials (Min 3 Field
Trials) Demonstrating Equivalency of
Residues Between In-Furrow and PSP
Trials Are Provided.



Implies That There Are Adequate
Ruminant Metabolism Data,
Analytical Methods, Potato
Processing Data and Rotational
Crop Data

Yes

No Additional Potato Metabolism





Study Required.

	







No

Potato Metabolism Study



May Be Required
(PSP Or In-Furrow Treatments).

Full Complement
of PSP Field Trials
Required.

Full Complement
of PSP Field Trials
Required.

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