Cultivation of Lemna gibba under desert conditions. I: Twelve months of continuous cultivation in open ponds

Micha Guy, Gila Granoth, Joseph Gale

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Duckweed, Lemna gibba, was grown in 12 m2 shallow ponds in the Negev desert, during 12 months of continuous cultivation, beginning April 1984. Average monthly growth rates varied with the season of the year. The lowest daily yield, 2·6±0·4 g dry weight m-2 day-1, was obtained during January. Highest daily yields, 7·9±2·6 g dry weight m-2 day-1 and 7·0±1·2 g dry weight m-2 day-1, were obtained during September and May. A 35% decline of the yield was seen during midsummer (July), 4·8±1·2 g dry weight m-2 day-1. The average rate for the year was 5·15±1·7 g dry weight m-2 day-1. The protein content of the plants ranged from 30 to 38% per unit dry weight. Growth performance is discussed in relation to the prevailing climatic conditions.

Original languageEnglish
Pages (from-to)145-156
Number of pages12
JournalBiomass
Volume21
Issue number2
DOIs
StatePublished - 1 Jan 1990

Keywords

  • Lemna gibba
  • cultivation
  • desert conditions
  • outdoor ponds

ASJC Scopus subject areas

  • Environmental Science (all)
  • Engineering (all)
  • Earth and Planetary Sciences (all)

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