RT article
T1 Guidelines for statistically sound and risk-based surveys of Phyllosticta citricarpa
A1 Lázaro, Elena
A1 Parnell, Stephen
A1 Vicent, Antonio
A1 Schans, Jan
A1 Schenk, Martijn
A1 Schrader, Gritta
A1 Cortinas-Abrahantes, Jose
A1 Zancanaro, Gabriele
A1 Vos, Sybren
K1 Buffer zone
K1 Confidence level
K1 Delimiting
K1 Design prevalence
K1 Detection
K1 Epidemiological units
K1 Infested zone
K1 U40  Surveying methods
K1 H20  Plant diseases
AB At the request of the European Commission, EFSA prepared these specific guidelines to guide the surveyor through the design of statistically sound and risk-based surveys for Phyllosticta citricarpa, integrating the key biological information. Based on examples, three different survey designs are simulated:(i) detection surveys to substantiate pest freedom, (ii) delimiting surveys to determine the boundaries of an infested zone, and (iii) buffer zone surveys to monitor a zone ensuring pest detection at low levels of prevalence.The first step of the survey design consists of setting the goals of the survey, characterising the host plant population and the methods used to identify the pest. All survey parameters are quantified taking into accountthe importance of the related assumptions. The more accurateand robust the information used for selecting and estimating the survey parameters, the more robust the conclusions of the survey will be. The second step of the survey design consists of the sample size (i.e. number of trees)calculation using the survey parameters as inputs of the proposed statistical tool (EFSA RiBESS+).The last step of the survey design is the allocation of the samples in the survey area which depends on the information available on the target population and risk factors. The robustness of the conclusions of surveys designed using the proposed approaches strongly depends on the survey preparation. The methodology proposed allows surveys to be compared across time and space, thus contributing to the harmonisation of the P.citricarpasurveys across the EU. The extremely flexible approach allows the surveys to be tailored to each specific situation in the Member States, taking into account the citrus tree distribution and available resources. The success of a good survey design relies on the technical aspects of the survey preparation and on the involvement of the risk managers.
PB Wiley Online Library
SN 2397-8325 (online ISSN)
YR 2020
FD 2020
LK http://hdl.handle.net/20.500.11939/7471
UL http://hdl.handle.net/20.500.11939/7471
LA en
NO Lázaro, E., Parnell, S., Vicent, A., Schans, J., Schenk, M. et al. (2020). Guidelines for statistically sound and risk‐based surveys of Phyllosticta citricarpa. EFSA supporting publications,17(7), EN-1893.
DS MINDS@UW
RD May 18, 2022