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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

Currently there is no effective mechanism for measuring the potential benefits of integrated pest and disease interventions in terms of reducing pesticide risks in potato production in developing countries. The environmental impact quotient (EIQ), a composite hazard indicator, was applied to data...


Kromann, P.Pradel, W.Cole, D.Taipe, ArturoForbes, G.[Use of the Environmental Impact Quotient to Estimate Health and Environmental Impacts of Pesticide Usage in Peruvian and Ecuadorian Potato Production]Use of the Environmental Impact Quotient to Estimate Health and Environmental Impacts of Pesticide Usage in Peruvian and Ecuadorian Potato Production
Kromann, P.Valverde, F.Alvarado, S.Velez, R.Pisuña, J.Potosi, B.Taipe, A.Caballero, D.Cabezas, A.Devaux, A.[Can Andean potatoes be agronomically biofortified with iron and zinc fertilizers?]Can Andean potatoes be agronomically biofortified with iron and zinc fertilizers?

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
Velivelli, S.L.S.Kromann, P.Lojan, P.Rojas, M.Franco, J.Suarez, J.P.Prestwich, B.D.[Identification of mVOCs from Andean rhizobacteria and field evaluation of bacterial and mycorrhizal inoculants on growth of potato in its center of origin.]Identification of mVOCs from Andean rhizobacteria and field evaluation of bacterial and mycorrhizal inoculants on growth of potato in its center of origin.

A field trial was conducted in two localities of the Ecuadorian Andes to evaluate potato (Solanum tuberosum c.v. INIAP - Fripapa) response to inoculation with four commercial products containing the arbuscular mycorrhizal fungus (AMF) strain Rhizophagus irregularis DAOM 197198. In parallel, potat...


Lojan, P.Senes-Guerrero, C.Suarez, J.P.Kromann, P.Schubler, A.Declerck, S.[Potato field-inoculation in Ecuador with Rhizophagus irregularis: no impact on growth performance and associated arbuscular mycorrhizal fungal communities.]Potato field-inoculation in Ecuador with Rhizophagus irregularis: no impact on growth performance and associated arbuscular mycorrhizal fungal communities.
Thomas-Sharma, SaraAndrade-Piedra, J.L.Carvajal-Yepes, MonicaHernández Nopsa, J.F.Jeger, MichaelJones, RogerKromann, P.Legg, J.P.Yuen, JonathanForbes, G.Garrett, K.A.[A risk assessment framework for seed degeneration: Informing an integrated seed health strategy for vegetatively-propagated crops]A risk assessment framework for seed degeneration: Informing an integrated seed health strategy for vegetatively-propagated crops

Oyarzun, P.Krijger, A.K.Garzon, C.D.León, D.Kromann, P.Yuen, J.Forbes, G.[Evaluation of host susceptibility, pathogen aggressiveness and sporangial survival in soil as factors affecting incidence of potato tuber infection by Phytophthora infestans in Ecuador.]Evaluation of host susceptibility, pathogen aggressiveness and sporangial survival in soil as factors affecting incidence of potato tuber infection by Phytophthora infestans in Ecuador.

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