Parcourir Publicaciones en revistas científicas par auteur "Quiroz, Roberto"
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Canopy chlorophyll fluorescence applied to stress detection using an easy-to-build micro-lidar
Moya, Ismael; Loayza, Hildo; Llanos López, María; Quiroz, Roberto; Ounis, Abderrahmane; Goulas, Yves (Springer Link, 2019)LEDFLEX is a micro-lidar dedicated to the measurement of vegetation fluorescence. The light source consists of 4 blue Light-Emitting Diodes (LED) to illuminate part of the canopy in order to average the spatial variability ... -
Development of an Open-Source Thermal Image Processing Software for Improving Irrigation Management in Potato Crops (Solanum tuberosum L.)
Cucho-Padin, Gonzalo; Rinza, Javier; Ninanya, Johan; Loayza, Hildo; Quiroz, Roberto; Ramírez, David A. (2020)Accurate determination of plant water status is mandatory to optimize irrigation scheduling and thus maximize yield. Infrared thermography (IRT) can be used as a proxy for detecting stomatal closure as a measure of plant ... -
Development of low-cost remote sensing tools and methods for supporting smallholder agriculture
Chucho Padin, Gonzalo; Loayza, Hildo; Palacios, Susan; Balcazar, Mario; Carbajal, Mariella; Quiroz, Roberto (Springer Link, 2019)Agricultural UAV-based remote sensing tools to facilitate decision-making for increasing productivity in developing countries were developed and tested. Specifically, a high-quality multispectral sensor and sophisticated ... -
Quantifying soil carbon stocks and humification through spectroscopic methods: A scoping assessment in EMBU-Kenya
Segnini, Aline; Posadas, Adolfo; Lopes Silva, Wilson T. da; Milori, Débora M.B.P.; Gavilan, Carla; Claessens, Lieven; Quiroz, Roberto (ELSEVIER, 2019)A soil carbon assessment was performed comparing agricultural cropping systems with natural vegetation along a sampling transect spanning different agro-ecologies on the eastern foot slopes of Mount Kenya in Embu county, ... -
Radiation Interception, Conversion and Partitioning Efficiency in Potato Landraces: How Far Are We from the Optimum?
Silva-Díaz, Cecilia; Ramírez, David A.; Rinza, Javier; Ninanya, Johan; Loayza, Hildo; Gómez, René; Anglin, Noelle L.; Eyzaguirre, Raúl; Quiroz, Roberto (MDPI, Basel (Switzerland), 2020-06)Crop efficiencies associated with intercepted radiation, conversion into biomass and allocation to edible organs are essential for yield improvement strategies that would enhance geneticproperties to maximize carbon gain ... -
Unraveling Ecophysiological Mechanisms in Potatoes under Different Irrigation Methods: A Preliminary Field Evaluation
Silva-Díaz, Cecilia; Ramírez, David A.; Rodríguez-Delfín, Alfredo; Mendiburu, Felipe de; Rinza, Javier; Ninanya, Johan; Loayza, Hildo; Quiroz, Roberto (2020)Potatoes—a global food security and staple crop—is threatened by dry spells in drought-prone areas. The use of physiological thresholds to save water while maintaining a reasonable tuber yield has been proposed, but their ...