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In hydroponics, the flow pattern of nutrient solution in a cultivation container affects the growth of plants. Even if the flow rate of nutrient solution is the same between containers, the flow pattern may differ based on the size and shape of the containers. Therefore, the flow pattern cannot be comprehensively described by flow rate alone. In order to identify the relationship between plant growth, root morphology, nutrient uptake, and flow pattern, a hydroponic cultivation of Swiss chard was carried out. In addition, in order to describe the flow pattern in a specific cultivation container, hydroponic flow patterns were observed via flow field visualization using particle image velocimetry. As a result, with the increase in flow rate, it was found that a specific flow rate can form an ideal flow pattern for plant growth. Under this flow pattern, nutrient absorption is promoted and roots are elongated, thereby absorbing more nutrients and further promoting plant growth. However, when the flow rate exceeds the ideal value, plant growth is hindered. In summary, identifying the ideal nutrient solution flow pattern in hydroponics can facilitate better crop production.
Bateer Baiyin; Kotaro Tagawa; Mina Yamada; Xinyan Wang; Satoshi Yamada; Sadahiro Yamamoto; Yasuomi Ibaraki. Effect of the Flow Rate on Plant Growth and Flow Visualization of Nutrient Solution in Hydroponics. Horticulturae 2021, 7, 225 .
AMA StyleBateer Baiyin, Kotaro Tagawa, Mina Yamada, Xinyan Wang, Satoshi Yamada, Sadahiro Yamamoto, Yasuomi Ibaraki. Effect of the Flow Rate on Plant Growth and Flow Visualization of Nutrient Solution in Hydroponics. Horticulturae. 2021; 7 (8):225.
Chicago/Turabian StyleBateer Baiyin; Kotaro Tagawa; Mina Yamada; Xinyan Wang; Satoshi Yamada; Sadahiro Yamamoto; Yasuomi Ibaraki. 2021. "Effect of the Flow Rate on Plant Growth and Flow Visualization of Nutrient Solution in Hydroponics." Horticulturae 7, no. 8: 225.
An open-field cultivation combined-type aquaponic system (OCAS) was developed to effectively utilize saline groundwater and prevent soil salinization while ensuring food production in drylands. To achieve the sustainable food production of the OCAS in power-scarce areas, a stand-alone photovoltaic system (PVS) for the OCAS was designed through a feasibility study of utilizing solar energy to meet its power demand. As a case study, the OCAS was established in La Paz, Baja California Sur, Mexico, with power consumption 22.72 kWh/day and annual average daily global horizontal irradiation (GHI) 6.12 kWh/m2/day, considering the 2017 meteorological data. HOMER software was employed for performance analysis and techno-economic evaluation of an appropriate PVS. Thousands PVS configurations were evaluated in terms of total net present cost (NPC) and levelized cost of energy (COE). The PVS that fulfilled the power demand and had the smallest NPC was proposed, for which the NPC and COE were calculated as $46,993 and $0.438/kWh, respectively. The relationship between its annual power supply and power demand of the OCAS was also analyzed in detail. It was found that the operation hours and the amount of power generation by the proposed PVS were 4156 h and 19,106 kWh in one year. Additionally, it was predicted that the excess power would occur almost every afternoon and reach 43% of the generated power. Therefore, the COE can be further reduced by rationally utilizing the excess power during operation.
Bateer Baiyin; Kotaro Tagawa; Joaquin Gutierrez. Techno-Economic Feasibility Analysis of a Stand-Alone Photovoltaic System for Combined Aquaponics on Drylands. Sustainability 2020, 12, 9556 .
AMA StyleBateer Baiyin, Kotaro Tagawa, Joaquin Gutierrez. Techno-Economic Feasibility Analysis of a Stand-Alone Photovoltaic System for Combined Aquaponics on Drylands. Sustainability. 2020; 12 (22):9556.
Chicago/Turabian StyleBateer Baiyin; Kotaro Tagawa; Joaquin Gutierrez. 2020. "Techno-Economic Feasibility Analysis of a Stand-Alone Photovoltaic System for Combined Aquaponics on Drylands." Sustainability 12, no. 22: 9556.