Air Distribution in a Fully-Closed Higher Plant Growth Chamber Impacts Crop Performance of Hydroponically-Grown Lettuce

Peiro, Enrique; Pannico, Antonio; Colleoni, Sebastian George; Bucchieri, Lorenzo; Rouphael, Youssef; Pascale, Stefania De; Paradiso, Roberta; Gòdia, Francesc

doi:10.3389/fpls.2020.00537

Cited by 21 publications

(18 citation statements)

References 31 publications

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“…The nutritional requirements of lettuce cv. Grand Rapids were calculated based on the exportation of the same cultivar used in the MELiSSA ACSA experiment [29] performed at the MELiSSA Pilot Plant (MPP) located at the Autonomous University of Barcelona. Total nitrogen was the limiting dilution factor of the liquid derivatives, whereas phosphorus was the limiting dilution factor of the solid derivatives.…”

Section: Plants Manual Fertigation and Nutrient Solutions Electrical Conductivitymentioning

confidence: 99%

An Appraisal of Urine Derivatives Integrated in the Nitrogen and Phosphorus Inputs of a Lettuce Soilless Cultivation System

et al. 2021

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Reinforcing and optimizing sustainable food production is an urgent contemporary issue. The depletion of natural mineral resources is a key problem that is addressed by recycling mined potassium and phosphorus, and nitrogen, whose production depends on very high energy input. A closed-loop approach of fertilizer use asserts the necessity for efficient management and practices of organic waste rich in minerals. Human-derived urine is an underutilized yet excellent source for nitrogen fertilizer, and, in this study, processed urine fertilizer was applied to greenhouse soilless cultivation of lettuce (Lactuca sativa L.) cv. Grand Rapids. Biomass increase, biometric parameters, soil plant analysis development (SPAD) index, minerals, and organic acids content of lettuce were analyzed. From eight different urine fertilizer products generated, K-struvite, urine precipitate-CaO, and the liquid electrodialysis (ED) concentrate supported the growth of lettuce similar to that of commercial mineral fertilizer. ED concentrate application led to the accumulation of potassium (+17.2%), calcium (+82.9%), malate (+185.3%), citrate (+114.4%), and isocitrate (+185.7%); K-struvite augmented the accumulation of magnesium (+44.9%); and urine precipitate-CaO induced the highest accumulation of calcium (+100.5%) when compared to the control, which is an added value when supplemented in daily diet. The results underlined the potential of nitrogen- and phosphate-rich human urine as a sustainable source for the fertilization of lettuce in soilless systems.

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Section: Plants Manual Fertigation and Nutrient Solutions Electrical Conductivitymentioning

confidence: 99%

An Appraisal of Urine Derivatives Integrated in the Nitrogen and Phosphorus Inputs of a Lettuce Soilless Cultivation System

et al. 2021

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“…According to the study, further optimization using the validated CFD model has resulted in an increment of an area with a suitable airflow rate for plant growth from 10% to 90%. A study by Piero et al, [8] on air distribution in a fully enclosed higher plant growth chamber proved the effectiveness of CFD analysis to design optimum air distribution. The results also indicate that air velocities between 0.3 and 0.5 ms −1 maximize biomass production in the chamber, while airspeed values above 0.6 m s −1 can depress the lettuce plant growth.…”

Section: Introductionmentioning

confidence: 98%

“…These dead zones can also clog the pores of the plant. On the other hand, too much CO2 can suffocate a plant [7,8].…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of the Airflow Distribution Inside Cube-Grow

Noh

Noor

Ahmad

2021

CFDL

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Cube-Grow was developed by MARDI to promote urban agriculture to the urban population. The product enables urban people to grow their vegetables with limited space. The initial test run of the system shows that the plant growth inside the structure was below expectation. The problem arises due to a lack of airflow or improper ventilation inside the structure. Optimum ventilation or airflow is crucial for plant growth as it enhances evapotranspiration at the leaf area to promote optimum plant growth. Therefore, this study aims to increase the airflow inside the Cube-Grow and find the best location for the air hole. Computational fluid dynamics (CFD) simulation was used in this study the analyse the effect of adding an air hole to the airflow characteristic inside the Cube-Grow. CFD also was used to select the best location to place the air hole. 3 option of air hole location was analysed and the results were compared with the existing design. The initial CFD simulation results were compared with the actual measurement data before it was used for further analysis. The result shows that adding an air hole increases overall airflow inside the Cube-Grow. Option 3 was chosen as the best location for the air hole as it produces a uniform and higher airflow inside the Cube-Grow. The study proved that CFD was able to be used to optimize the design of Cube-Grow before the actual prototype was built.

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“…Hydroponics applications have drawn significant attention recently based on several benefits, including water efficiency ( Corrado et al., 2021 ), nutrient control ( Yang and Kim, 2020 ), space optimization ( Peiro et al., 2020 ), continuous production ( Magwaza et al., 2020 ), improved crop quality ( Shrivastava et al., 2023 ), and local food production ( Gentry, 2019 ). Compared with traditional agriculture, hydroponic-based cultivation recycled the nutrient liquid to re-water the crop.…”

Section: Introductionmentioning

confidence: 99%

Environmental parameters factors exploration on lettuce seed germination with hydrogel

Huang,

Chang,

et al. 2024

Front. Plant Sci.

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Lettuce (Lactuca sativa) germination is sensitive to environmental conditions. Recently, hydrogel has received increased attention as an alternative media to soil for seed germination. Compared to soil seeding, hydrogel-aided germination provides more controlled seeding environments. However, there are still challenges preventing hydrogel-aided seed germination from being widely used in industry production or academic studies, such as hydrogel formulation variations, seeding operation standardization, and germination evaluation. In this study, we tested how the combination of multiple environmental conditions affect lettuce seed germination time, which is measured as the time needed for the first pair of leaves to appear (leaf emergence) or, alternatively, the third leaf to appear (leaf development). We found that germination time and success rate of two lettuce varieties (Iceberg A and Butter Crunch) showed different sensitivities to pH, Hoagland formulations and concentrations, light intensity, and hydrogel content. We have conducted statistical analysis on the correlation between germination time and these environmental conditions.

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Air Distribution in a Fully-Closed Higher Plant Growth Chamber Impacts Crop Performance of Hydroponically-Grown Lettuce

Cited by 21 publications

References 31 publications

An Appraisal of Urine Derivatives Integrated in the Nitrogen and Phosphorus Inputs of a Lettuce Soilless Cultivation System

An Appraisal of Urine Derivatives Integrated in the Nitrogen and Phosphorus Inputs of a Lettuce Soilless Cultivation System

CFD Simulation of the Airflow Distribution Inside Cube-Grow

Environmental parameters factors exploration on lettuce seed germination with hydrogel

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