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The definition of irrigation schedules depends on the understanding of the response of key plant traits to different water restriction characteristics with the aim to avoid physiological impairment. In this study, different timings (at tuber initiation and bulking) and intensities (four soil mois...


Ramírez, D.Yactayo, W.Rens, L.R.Rolando, J.L.Palacios, S.Mendiburu, F. deMares, V.Barreda, CarolinaLoayza, H.Monneveux, P.Zotarelli, L.Khan, A.Quiróz, R.[Defining biological thresholds associated to plant water status for monitoring water restriction effects: Stomatal conductance and photosynthesis recovery as key indicators in potato.]Defining biological thresholds associated to plant water status for monitoring water restriction effects: Stomatal conductance and photosynthesis recovery as key indicators in potato.

High-altitude ecosystems shelter important reserves of biodiversity, water provision and soil organic carbon (SOC) stocks. Climate change, agricultural encroachment, overgrazing, and mining activities are endangering ecosystems sustainability, particularly in the high-Andean Puna. Increasing food...


Rolando, J.L.Turin, C.Ramírez, D.Mares, V.Monerris, J.Quiróz, R.[Key ecosystem services and ecological intensification of agriculture in the tropical high-Andean Puna as affected by land-use and climate changes.]Key ecosystem services and ecological intensification of agriculture in the tropical high-Andean Puna as affected by land-use and climate changes.

Partial root-zone drying (PRD) is an irrigation technique which consists of alternating the water supply from one furrow to another, and keeping the other one dry during the weekly alternation period. Studies assessing PRD in potato have reported a 30-50% of water savings with no tuber yield redu...


Yactayo, W.Ramírez, D.German, T.Worku, A.Abeb, A.Harahagazwe, V.Mares, V.Mendiburu, F. deQuiróz, R.[Improving potato cultivation using siphons for partial root-zone drying irrigation: a case study in the Blue Nile river basin, Ethiopia.]Improving potato cultivation using siphons for partial root-zone drying irrigation: a case study in the Blue Nile river basin, Ethiopia.

Expansion of crop production into high-altitude native grasslands is occurring in the Peruvian High-Andes due to climate change and agricultural intensification, with little understanding of the consequences to the ecosystem. The objective of this study was to determine the impact of land-use cha...


Rolando, J.L.Dubeux, J.C.Ramírez, D.Ruiz Moreno, M.Turin, C.Mares, V.Sollenberger, L.Quiróz, R.[Land use effects on soil fertility and nutrient cycling in the Peruvian High-Andean puna grasslands.]Land use effects on soil fertility and nutrient cycling in the Peruvian High-Andean puna grasslands.

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
Ramírez, D.Yactayo, W.Gutiérrez, R.Mares, V.Mendiburu, F. dePosadas, A.Quiróz, R.[Chlorophyll concentration in leaves is an indicator of potato tuber yield in water-shortage conditions.]Chlorophyll concentration in leaves is an indicator of potato tuber yield in water-shortage conditions.
Carli, C.Yuldashev, F.Khalikov, D.Condori, B.Mares, V.Monneveux, P.[Effect of different irrigation regimes on yield, water use efficiency and quality of potato (Solanum tuberosum L.) in the lowlands of Tashkent, Uzbekistan: A field and modeling perspective.]Effect of different irrigation regimes on yield, water use efficiency and quality of potato (Solanum tuberosum L.) in the lowlands of Tashkent, Uzbekistan: A field and modeling perspective.

Past attempts to alleviate the problems of poor farmers engaged in mixed-crop-livestock production have generally focussed on the design and diffusion of new technologies targeted on specific components of the agroecosystem. Unfortunately, such piece-meal efforts have had little impact in the dev...


Li Pun, H.H.Baumgaertner, J.U.Greiling, J.Gopalan, H.Jabbar, M.A.Mares, V.McDermott, John J.Odiit, M.Mohamed-Saleem, M.A.[Linking natural resources, agriculture and human health: case studies from East Africa]Linking natural resources, agriculture and human health: case studies from East Africa
Chavez, P.Yarleque, C.Loayza, H.Mares, V.Hancco, P.Priou, S.Marquez, M.P.Posadas, A.Zorogastua, P.Flexas, J.Quiróz, R.[Detection of bacterial wilt infection caused by Ralstonia solanacearum in potato (Solanum tuberosum L.) through multifractal analysis applied to remotely sensed data.]Detection of bacterial wilt infection caused by Ralstonia solanacearum in potato (Solanum tuberosum L.) through multifractal analysis applied to remotely sensed data.

Per capita consumption of milk and meat products in developing Asia (including China) grew by 2.4 percent and 5 percent respectively between 1975-79 and 1990-94. This growth can be attributed to high growth rate in income and rapid urbanization. For Latin America, per capita milk and meat consump...


Ehui, Simeon K.Li Pun, H.H.Mares, V.Shapiro, Barry I.[The role of livestock in food security and environmental protection]The role of livestock in food security and environmental protection

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