Articles
A stereo-imaging system to assess plant water status in kiwifruit and grapevine: recent advances
Article number
1395_5
Pages
31 – 36
Language
English
Abstract
Kiwifruit and grapevine can quickly respond to environmental stresses and modify their leaf features.
This study aims to further validate the correlation of leaf inclination response to water stress in grapevine and kiwifruit, through the use of an innovative stereovision system (named Wcam) that collects 3D images of the canopy.
The system was tested in commercial vineyards and kiwifruit orchards in Veneto region (northeastern Italy) during three growing seasons (2020-2022). Here we report the results obtained in the last year of this study.
In-field trials compared two irrigation managements: normal irrigation (I) managed to keep plants in well-watered conditions, and reduced irrigation (RI) managed to induce a progressive water stress.
Plant water status was monitored during the growing season, measuring midday stem water potential with a pressure chamber.
Manual measurements of leaf inclination were collected every 8-10 days to validate the measurements performed by the stereo-camera.
Comparison between manual- and Wcam-leaf angle measurements confirmed the ability of the stereo-vision system to correctly measure this canopy parameter.
Data collected in 2022 provided further evidence of the significant correlation between leaf inclination and plant water status in kiwifruit and grapevine.
Leaf angle measures can complement information from climate and soil moisture sensors to provide a more accurate assessment of the plant water status in vineyards and orchards.
This study aims to further validate the correlation of leaf inclination response to water stress in grapevine and kiwifruit, through the use of an innovative stereovision system (named Wcam) that collects 3D images of the canopy.
The system was tested in commercial vineyards and kiwifruit orchards in Veneto region (northeastern Italy) during three growing seasons (2020-2022). Here we report the results obtained in the last year of this study.
In-field trials compared two irrigation managements: normal irrigation (I) managed to keep plants in well-watered conditions, and reduced irrigation (RI) managed to induce a progressive water stress.
Plant water status was monitored during the growing season, measuring midday stem water potential with a pressure chamber.
Manual measurements of leaf inclination were collected every 8-10 days to validate the measurements performed by the stereo-camera.
Comparison between manual- and Wcam-leaf angle measurements confirmed the ability of the stereo-vision system to correctly measure this canopy parameter.
Data collected in 2022 provided further evidence of the significant correlation between leaf inclination and plant water status in kiwifruit and grapevine.
Leaf angle measures can complement information from climate and soil moisture sensors to provide a more accurate assessment of the plant water status in vineyards and orchards.
Authors
L. Masiero, P. Marcuzzo, N. Belfiore, A. Cagnin, M. Minervini, N. Vicino, D. Vicino, F. Gaiotti
Keywords
precision irrigation, leaf inclination, 3D stereovision, grapevine, kiwifruit
Groups involved
- Division Temperate Tree Nuts
- Division Vine and Berry Fruits
- Division Temperate Tree Fruits
- Division Precision Horticulture and Engineering
- Division Plant-Environment Interactions in Field Systems
- Division Tropical and Subtropical Fruit and Nuts
- Working Group Precision Management of Orchards and Vineyards
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