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Oregon State University (2020)

Measuring Tomato Production and Water Productivity in Agrivoltaic Systems

Al-agele, Hadi A.

Titre : Measuring Tomato Production and Water Productivity in Agrivoltaic Systems

Auteur : Al-agele, Hadi A.

Université de soutenance : Oregon State University

Grade : Master of Science (M.S.) Biological and Ecological Engineering 2020

Résumé partiel
Growing populations and industrialization rates across the world are leading to increased food and energy demand. The challenge of meeting this demand while also mitigating climate change impacts serves as a driving force for the development of renewable energies technologies. This study focuses on the role of Agrivoltaic systems in meeting this challenge. Agrivoltaic systems are dual-use systems which allow for both agricultural and electrical production. These systems also have the potential to reduced water demand and increase overall water productivity of certain agricultural crops. This study observed the microclimate and growth characteristics of Tomato plants (Solanum lycopersicum var Legend) grown within three different locations on an Agrivoltaic field and with two different irrigation treatments (full and deficit). The emitters evaluation characteristics were shown low average discharge rate and standard deviation in all the treatments. Uniformity coefficient and distribution uniformity were values ranged from 69%-99.5% and 47% - 85%, respectively. Overall water productivity increases could potentially be more pronounced in systems with greater overall water distribution uniformity. The microclimate results showed significant differences in air temperature and relative humidity between all the treatments. Air temperature was highest in the control and row plots (22.3 °C, 21.5 °C) but lower beneath the panels (19.8 °C). Average relative humidity was highest in the row, followed by the control and then the panel areas (79.38%, 74.63%, 73.54%). In addition, soil temperature and soil moisture content showed significant difference with all the treatments. Increasing shading from panels corresponded with decreasing soil temperature. Average soil temperate was 20 °C in the panel area, 24.7 °C between the rows, and 25.6 °C in the control. When comparing wind speed data from the climate stations, wind speed was highest in control area compared to row area (0.89 m/sec and 0.65 m/sec). Reference ET was significantly different between the two stations in control area and between the rows.


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