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Ramírez, D.Gavilan, C.Barreda, CarolinaCondori, B.Rossel, G.Mwanga, R.O.M.Andrade, M.I.Monneveux, P.Anglin, Noelle L.Quiróz, R.Ellis, D.Quiróz, R.[Characterizing the diversity of sweetpotato through growth parameters and leaf traits: Precocity and light use efficiency as important ordination factors.]Characterizing the diversity of sweetpotato through growth parameters and leaf traits: Precocity and light use efficiency as important ordination factors.

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.
Rolando, J.L.Ramírez, D.Yactayo, W.Monneveux, P.Quiróz, R.[Leaf greenness as a drought tolerance related trait in potato (Solanum tuberosum L.).]Leaf greenness as a drought tolerance related trait in potato (Solanum tuberosum L.).

In spite of the growing evidence showing the occurrence of nocturnal water exchange measured by stomatal conductance (SCnight, related to stomatal openness) and transpiration (TRnight, related to water losses) in different crops, how those processes are affected by soil water availability is stil...


Ramírez, D.Yactayo, W.Rolando, J.L.Quiróz, R.[Preliminary evidence of nocturnal transpiration and stomatal conductance in potato and their interaction with drought and yield.]Preliminary evidence of nocturnal transpiration and stomatal conductance in potato and their interaction with drought and yield.

One of the future challenges to produce food in a Mars environment will be the optimization of resources through the potential use of the Martian substratum for growing crops as a part of bioregenerative food systems. In vitro plantlets from 65 potato genotypes were rooted in peat-pellets substra...


Ramírez, D.Kreuze, J.F.Amoros, W.Valdivia Silva, J.E.Ranck, J.García, S.Salas, E.Yactayo, W.[Extreme salinity as a challenge to grow potatoes under Mars-like soil conditions: targeting promising genotypes.]Extreme salinity as a challenge to grow potatoes under Mars-like soil conditions: targeting promising genotypes.
Dannenmann, M.Díaz Pinés, EugenioKitzler, B.Karhu, K.Tejedor, J.Ambus, P.Parra, A.Sánchez Martin, L.Resco, V.Ramírez, D.Povoas‐Guimaraes, L.Willibald, G.Gasche, R.Zechmeister-Boltenstern, S.Kraus, DavidCastaldi, S.Vallejo, A.Rubio, A.Rubio, J.M.Butterbach-Bahl, Klaus[Postfire nitrogen balance of Mediterranean shrublands: Direct combustion losses versus gaseous and leaching losses from the postfire soil mineral nitrogen flush.]Postfire nitrogen balance of Mediterranean shrublands: Direct combustion losses versus gaseous and leaching losses from the postfire soil mineral nitrogen flush.

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

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