Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics

E. Goto; A. J. Both; L. D. Albright; R. W. Langhans; A. R. Leed

doi:https://doi.org/10.17660/ActaHortic.1996.440.36

Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics

E. Goto, A. J. Both, L. D. Albright, R. W. Langhans, A. R. Leed

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

Lettuce (Lactuca sativa L., cv. Ostinata) growth experiments were carried out to study the effect of dissolved oxygen (DO) concentration on plant growth in a floating hydroponic system. Pure O₂ and N₂ gas were supplied to the hydroponic system for precise DO control. This system made it easy to increase the DO concentration beyond the maximum (or saturation) concentration possible when bubbling air into water. Eleven day old lettuce seedlings were grown for 24 days under various DO concentrations: sub-saturated, saturated, and super-saturated. There was no significant difference in fresh weight, shoot and root dry weights among the DO concentrations: 2.1 (25% of saturated at 24°C), 4.2 (50%), 8.4 (saturated), and 16.8 (200%) mg/L. The critical DO concentration for vigorous lettuce growth was considered to be lower than 2.1 mg/L. Neither root damage nor delay of shoot growth was observed at any of the studied DO concentrations.

Original language	English (US)
Pages (from-to)	205-210
Number of pages	6
Journal	Acta Horticulturae
Volume	440
DOIs	https://doi.org/10.17660/ActaHortic.1996.440.36
State	Published - Dec 1 1996
Externally published	Yes

ASJC Scopus subject areas

Horticulture

Keywords

Dissolved oxygen
Growth
Hydroponics
Lettuce

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https://doi.org/10.17660/ActaHortic.1996.440.36

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title = "Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics",

abstract = "Lettuce (Lactuca sativa L., cv. Ostinata) growth experiments were carried out to study the effect of dissolved oxygen (DO) concentration on plant growth in a floating hydroponic system. Pure O2 and N2 gas were supplied to the hydroponic system for precise DO control. This system made it easy to increase the DO concentration beyond the maximum (or saturation) concentration possible when bubbling air into water. Eleven day old lettuce seedlings were grown for 24 days under various DO concentrations: sub-saturated, saturated, and super-saturated. There was no significant difference in fresh weight, shoot and root dry weights among the DO concentrations: 2.1 (25% of saturated at 24°C), 4.2 (50%), 8.4 (saturated), and 16.8 (200%) mg/L. The critical DO concentration for vigorous lettuce growth was considered to be lower than 2.1 mg/L. Neither root damage nor delay of shoot growth was observed at any of the studied DO concentrations.",

keywords = "Dissolved oxygen, Growth, Hydroponics, Lettuce",

author = "E. Goto and Both, {A. J.} and Albright, {L. D.} and Langhans, {R. W.} and Leed, {A. R.}",

year = "1996",

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doi = "https://doi.org/10.17660/ActaHortic.1996.440.36",

language = "English (US)",

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T1 - Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics

AU - Goto, E.

AU - Both, A. J.

AU - Albright, L. D.

AU - Langhans, R. W.

AU - Leed, A. R.

PY - 1996/12/1

Y1 - 1996/12/1

N2 - Lettuce (Lactuca sativa L., cv. Ostinata) growth experiments were carried out to study the effect of dissolved oxygen (DO) concentration on plant growth in a floating hydroponic system. Pure O2 and N2 gas were supplied to the hydroponic system for precise DO control. This system made it easy to increase the DO concentration beyond the maximum (or saturation) concentration possible when bubbling air into water. Eleven day old lettuce seedlings were grown for 24 days under various DO concentrations: sub-saturated, saturated, and super-saturated. There was no significant difference in fresh weight, shoot and root dry weights among the DO concentrations: 2.1 (25% of saturated at 24°C), 4.2 (50%), 8.4 (saturated), and 16.8 (200%) mg/L. The critical DO concentration for vigorous lettuce growth was considered to be lower than 2.1 mg/L. Neither root damage nor delay of shoot growth was observed at any of the studied DO concentrations.

AB - Lettuce (Lactuca sativa L., cv. Ostinata) growth experiments were carried out to study the effect of dissolved oxygen (DO) concentration on plant growth in a floating hydroponic system. Pure O2 and N2 gas were supplied to the hydroponic system for precise DO control. This system made it easy to increase the DO concentration beyond the maximum (or saturation) concentration possible when bubbling air into water. Eleven day old lettuce seedlings were grown for 24 days under various DO concentrations: sub-saturated, saturated, and super-saturated. There was no significant difference in fresh weight, shoot and root dry weights among the DO concentrations: 2.1 (25% of saturated at 24°C), 4.2 (50%), 8.4 (saturated), and 16.8 (200%) mg/L. The critical DO concentration for vigorous lettuce growth was considered to be lower than 2.1 mg/L. Neither root damage nor delay of shoot growth was observed at any of the studied DO concentrations.

KW - Dissolved oxygen

KW - Growth

KW - Hydroponics

KW - Lettuce

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SN - 0567-7572

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SP - 205

EP - 210

JO - Acta Horticulturae

JF - Acta Horticulturae

ER -

Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics

Abstract

ASJC Scopus subject areas

Keywords

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