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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.
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.

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.

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.

Ramírez, D.Rolando, J.L.Yactayo, W.Monneveux, P.Quiróz, R.[Is the discrimination against 13C in leaflets and tubers an appropiate trait to determine genotypic differences related to drought tolerance in potato?]Is the discrimination against 13C in leaflets and tubers an appropiate trait to determine genotypic differences related to drought tolerance in potato?

The article objectives were: (i) to compare physiological performance and biomass accumulation among genotypes along the growing period and (ii) to test the reliability of Δleaflet and Δtuber to determine key mechanisms responsible of the varietal differences in biomass accumulation and tuber yie...


Ramírez, D.Rolando, J.L.Yactayo, W.Monneveux, P.Quiróz, R.[Is Discrimination of 13C in potato leaflets and tubers an appropriate trait to describe genotype responses to restrictive and well-watered conditions?]Is Discrimination of 13C in potato leaflets and tubers an appropriate trait to describe genotype responses to restrictive and well-watered conditions?
Ramírez, D.Rolando, J.L.Yactayo, W.Monneveux, P.Quiróz, R.[Improving potato drought tolerance through the induction of long-term water stress memory.]Improving potato drought tolerance through the induction of long-term water stress memory.

Soil organic C (SOC), the largest terrestrial C pool, has been shown to be sensitive to agricultural disturbance. In the Andean Puna, agricultural expansion is thought to be jeopardizing the large SOC stock sequestered in its soils. In this paper, we assessed the impact changes in land use have o...


Rolando, J.L.Dubeux, J.C.Pérez, W.Ramírez, D.Turin, C.Ruiz Moreno, M.Comerford, N.Mares, V.García, S.Quiróz, R.[Soil organic carbon stocks and fractionation under different land uses in the Peruvian high-Andean Puna.]Soil organic carbon stocks and fractionation under different land uses in the Peruvian high-Andean Puna.

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