TABLE CONTENTS

Incidence and Economic Losses caused by PCN (Globodera pallida and G.
rostochiensis) in the Andean Region of Bolivia and Peru
Franco, J. (1) & A. Gonzalez (2)
(1)Fundación PROINPA, P.O. Box 4285, Cochabamba, Bolivia; (2) Private Consultant, Lima, Peru.
Results of soil sampling during several years in main potato producing departments and
information available on the distribution (incidence) and population densities (severity)of
Globodera spp. was analyzed to estimate the economic losses that this nematode causes to
the potato crop in Bolivia and Perú. All sampled departments in both countries showed the
presence of PCN. Out of 3299 soil samples, 64.90 % were positives and infestation levels
reached up to 2161 eggs/g soil in Peru. This percentage in Bolivia was higher ( 78.42 % out
of 735 samples). The results obtained by the extrapolation of cultivated areas, PCN incidence
and severity damage, and price of the tubers, allowed to estimate the economic losses of the
gross value of potato production in Bolivia, reaching US $ 16 million. The dominating
species in this genus was G.pallida in relation to G. rostochiensis and both species were most
frequently found between 3,500 and 4,000 masl. Th effect of incidence and severity of PCN
on the yield potato crop in Peru is also estimated although no gross value economic losses
due to lack of more detailed information.
5 th International Congress of Nematology, 2008 83