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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Disease and Pest Management Research Unit » Research » Publications at this Location » Publication #404764
Research Project: Disease Management in Small Fruit and Nursery Crops Based on Knowledge of Pathogen Diversity, Biology, and Environmental Effects

Location: Horticultural Crops Disease and Pest Management Research Unit

Title: Occurence and distribution of Globodera SPP. in Bolivia

Author
item SAINZ, C - Consultant
item VILLARROE, C - Consultant
item Zasada, Inga
item DANDURAND, L - University Of Idaho
item KUHL, J - University Of Idaho
item SILVESTRE, R - University Of Idaho
item Hesse, Cedar
item Peetz, Amy
item BENEDETTI, T - Oregon State University
item Baker, Hannah
item SUBBOTIN, S - California Department Of Food And Agriculture

Submitted to: Nematropica
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/3/2023
Publication Date: 9/7/2023
Citation: Sainz, C., Villarroe, C.L., Zasada, I.A., Dandurand, L.M., Kuhl, J., Silvestre, R., Hesse, C.N., Peetz, A.B., Benedetti, T., Baker, H.V., Subbotin, S.A. 2023. Occurence and distribution of Globodera SPP. in Bolivia. Nematropica. 53:82-88.

Interpretive Summary: Potato cyst nematodes (PCN), microscopic worms that attack plants, are a major constraint to the production of potatoes globally. A survey was conducted to provide up-to-date information on the distribution and identity of PCN in Bolivia. It was found that PCN is widespread in the country and that there are at least two different types of PCN in the country. This information will be used by farmers and researchers to develop management strategies to reduce the impact of PCN on potato production in Bolivia.

Technical Abstract: Potato is an important crop for thousands of small-holder farmers in Bolivia. The potato cyst nematodes (Globodera rostochiensis and G. pallida) have been reported in most cultivated areas of Bolivia and are a significant constraint to the production of potato in the country. A survey was conducted in 2022 to provide a current understanding of the identity, distribution and occurrence of Globodera spp. in Bolivia. Soil samples were collected from 144 potato fields and Globodera spp. cysts were found in 82% of the samples. There were significantly higher population densities of Globodera spp. in the departments of La Paz, Cochabamba, and Chiquisaca (297 to 1,008 cysts/250 g soil) compared to Potosí and Tarija (~85 cysts/250 g soil) (P < 0.001). Based upon molecular identification, G. rostochiensis was the most prevalent species in Bolivia found in 66% of cyst samples or 88% of fields. These findings provide a starting place for additional research in Bolivia to develop new way to reduce the negative impact of Globodera spp. on potato production and the livelihood of Bolivian farmers.