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Devaux, A.Ordinola, M.Andrade-Piedra, J.L.Velasco, C.Manrique, K.Thomann, A.Fonseca, C.López, G.Reinoso, I.Oros, R.Horton, D.[Innovacion para el desarrollo: Las estrategias y experiencias de Papa Andina.]Innovacion para el desarrollo: Las estrategias y experiencias de Papa Andina.

Vegetatively propagated crop (VPC) seed tends to remain true to varietal type but is bulky, often carries disease, and is slow to produce. So VPC seed needs to be handled differently than that of other crops, e.g., it tends to be sourced locally, often must be fresh, and it is less often sold on ...


Bentley, J.W.Andrade-Piedra, J.L.Demo, P.Dzomeku, B.M.Jacobsen, K.Kikulwe, E.Kromann, P.Kumar, L.McEwan, M.Mudege, Netsayi N.Ogero, K.Okechugwu, R.Orrego, R.Ospina, B.Sperling, L.Walsh, S.Thiele, Graham[Understanding root, tuber, and banana seed systems and coordination breakdown: A multi-stakeholder framework.]Understanding root, tuber, and banana seed systems and coordination breakdown: A multi-stakeholder framework.

Seed systems have an important role in the distribution of high-quality seed and improved varieties. The structure of seed networks also helps to determine the epidemiological risk for seedborne disease. We present a new approach for evaluating the epidemiological role of nodes in seed networks, ...


Buddenhagen, C.Hernández Nopsa, J.F.Andersen, Kelsey F.Andrade-Piedra, J.L.Forbes, G.Kromann, P.Thomas-Sharma, SaraUseche, PilarGarrett, K.A.[Epidemic network analysis for mitigation of invasive pathogens in seed systems: potato in Ecuador]Epidemic network analysis for mitigation of invasive pathogens in seed systems: potato in Ecuador

The poor knowledge about the presence of diseases and pests affecting the potato crop in developing countries difficult the understanding of their distribution in agro-ecological systems and consequent effect on yield and seed quality. A combination of a monitoring and a field experiment were per...


Navarrete, I.Panchi, N.Andrade-Piedra, J.L.[Potato crop health quality and yield losses in Ecuador]Potato crop health quality and yield losses in Ecuador

The Andean region is the most important center of potato diversity in the world. The global warming trend which has taken place since the 1950s, that is 2-3 times the reported global warming and the continuous presence of extreme events makes this region a live laboratory to study the impact of c...


Quiróz, R.Ramírez, D.Kroschel, J.Andrade-Piedra, J.L.Barreda, CarolinaCondori, B.Mares, V.Monneveux, P.Pérez, W.[Impact of climate change on the potato crop and biodiversity in its center of origin]Impact of climate change on the potato crop and biodiversity in its center of origin
Horton, D.Thiele, GrahamOros, R.Andrade-Piedra, J.L.Velasco, C.Devaux, A.[Knowledge management for pro-poor innovation: The Papa Andina case.]Knowledge management for pro-poor innovation: The Papa Andina case.

In this study, the adequacy of the late blight simulation model LATEBLIGHT (version LB2004) was evaluated under Nicaraguan conditions. During 2007 to 2008, five field experiments were conducted in three potato-production regions in northern Nicaragua. Two susceptible (‘Cal White’ and ‘Granola’) a...


Blandon-Diaz, J.U.Forbes, G.Andrade-Piedra, J.L.Yuen JE[Assessing the adequacy of the simulation model LATEBLIGHT under Nicaraguan conditions]Assessing the adequacy of the simulation model LATEBLIGHT under Nicaraguan conditions
Cavatassi, R.Gonzáles Flores, M.Winters, P.Andrade-Piedra, J.L.Espinosa, P.Thiele, Graham[Linking smallholders to the new agricultural economy: The case of the Plataformas de Concertacion in Ecuador.]Linking smallholders to the new agricultural economy: The case of the Plataformas de Concertacion in Ecuador.

Seed potato degeneration, the reduction in yield or quality caused by an accumulation of pathogens and pests in planting material due to successive cycles of vegetative propagation, has been a long-standing production challenge for potato growers around the world. In developed countries this prob...


Thomas-Sharma, SaraAbdurahman, A.Ali SAndrade-Piedra, J.L.Bao, S.Charkowski ACrook DKadian, M.Kromann, P.Struik, Paul C.Torquebiau, Emmanuel F.Garrett, K.A.Forbes, G.[Seed degeneration in potato: the need for an integrated seed health strategy to mitigate the problem in developing countries]Seed degeneration in potato: the need for an integrated seed health strategy to mitigate the problem in developing countries
Mateus-Rodriguez, J.Haan, Stef deAndrade-Piedra, J.L.Maldonado, L.Hareau, G.Barker, IanChuquillanqui, C.Otazu, V.Frisancho, R.Bastos, C.Pereira, A.S.Medeiros, C.A.Montesdeoca, F.Benitez, J.[Technical and economic analysis of aeroponics and other systems for potato mini-tuber production in Latin America.]Technical and economic analysis of aeroponics and other systems for potato mini-tuber production in Latin America.

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