Hort. Sci. (Prague), 2019, 46(2):107-114 | DOI: 10.17221/147/2017-HORTSCI

Modelling evapotranspiration of soilless cut roses 'Red Naomi' based on climatic and crop predictorsOriginal Paper

Patricia Malva Costa1, Isabel Pôças1,2,3,4, Mário Cunha*,1,3,4
1 Faculdade de Ciências da Universidade do Porto, Porto, Portugal
2 Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Lisboa, Portugal
3 Geo-Space Sciences Research Centre, Universidade do Porto, Porto, Portugal
4 Institute for Systems and Computer Engineering, Technology and Science INESC TEC, Campus da Faculdade de Engenharia da Universidade do Porto, Porto. Portugal

This study aimed to estimate the daily crop evapotranspiration (ETc) of soilless cut 'Red Naomi' roses, cultivated in a commercial glass greenhouse, using climatic and crop predictors. A multiple stepwise regression technique was applied for estimating ETc using the daily relative humidity, stem leaf area and number of leaves of the bended stems. The model explained 90% of the daily ETc variability (R2 = 0.90, n = 33, P < 0.0001) measured by weighing lysimeters. The mean relative difference between the observed and the estimated daily ETc was 9.1%. The methodology revealed a high accuracy and precision in the estimation of daily ETc.

Keywords: Rosa hybrida L.; greenhouse crop; irrigation management; weighting lysimeter; multiple stepwise regression

Published: June 30, 2019  Show citation

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Costa PM, Pôças I, Cunha M. Modelling evapotranspiration of soilless cut roses 'Red Naomi' based on climatic and crop predictors. Hort. Sci. (Prague). 2019;46(2):107-114. doi: 10.17221/147/2017-HORTSCI.
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