Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics

E. Goto, Arend-Jan Both, L. D. Albright, R. W. Langhans, A. R. Leed

Research output: Contribution to journalArticle

37 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)205-210
Number of pages6
JournalActa Horticulturae
Volume440
DOIs
StatePublished - Dec 1 1996
Externally publishedYes

Fingerprint

hydroponics
lettuce
dissolved oxygen
shoots
Lactuca sativa
gases
plant growth
air
seedlings
water

All Science Journal Classification (ASJC) codes

  • Horticulture

Cite this

Goto, E. ; Both, Arend-Jan ; Albright, L. D. ; Langhans, R. W. ; Leed, A. R. / Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics. In: Acta Horticulturae. 1996 ; Vol. 440. pp. 205-210.
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Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics. / Goto, E.; Both, Arend-Jan; Albright, L. D.; Langhans, R. W.; Leed, A. R.

In: Acta Horticulturae, Vol. 440, 01.12.1996, p. 205-210.

Research output: Contribution to journalArticle

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AU - Both, Arend-Jan

AU - Albright, L. D.

AU - Langhans, R. W.

AU - Leed, A. R.

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