Consumptive water use and stomatal conductance of Atriplex lentiformis irrigated with industrial brine in a desert irrigation district

Fiona L. Jordan, Martin Yoklic, Kiyomi Morino, Paul W Brown, Robert Seaman, Edward P. Glenn

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The halophyte forage shrub, Atriplex lentiformis (quailbush), was irrigated with brine from a reverse-osmosis (RO) water treatment plant in an agricultural district in Marana, Arizona, in the Sonoran Desert, U.S. Small transplants were installed in large, outdoor drainage lysimeters and drip-irrigated with RO concentrate, on a schedule designed to deliver 1.5 times the reference evapotranspiration (ET0) on a daily basis, as determined by an on-site micrometeorological station. Water consumption was measured by a water-balance approach over an annual cycle and by measuring sap flow with heat-balance sensors over a 28-day period in August 2008. Over this annual cycle, biomass yield was 1.62 kg m-2 and the average water consumption during the growing season was 1.55 times ET0, similar to values for high-biomass crops such as alfalfa. The drainage fraction (water that exited lysimeters) was only 5% of the total input (irrigation plus precipitation) over the study. The Priestley-Taylor coefficient relating evapotranspiration (ET) to net radiation was 1.34, typical of values for freely transpiring crops under non-water-limiting conditions. Rates of transpiration measured by sap flow sensors were closely coupled to both solar radiation and atmospheric water demand on hourly and daily time steps. Stomatal conductance was high throughout the day and coupled to diurnal solar radiation. Although halophytes often exhibit low to moderate growth potential under natural conditions or in sub-optimal agricultural settings, the present results show that they have high growth potential when water and nutrients are not limiting. The high yield and consumptive water use by A. lentiformis makes it a good candidate for the reuse of industrial or agricultural brines in arid-zone irrigation districts.

Original languageEnglish (US)
Pages (from-to)899-912
Number of pages14
JournalAgricultural and Forest Meteorology
Volume149
Issue number5
DOIs
StatePublished - May 7 2009

Fingerprint

Atriplex lentiformis
sap flow
lysimeter
stomatal conductance
annual cycle
brine
water use
evapotranspiration
deserts
solar radiation
desert
irrigation
sensor
halophyte
crop
heat balance
net radiation
biomass
drainage water
reverse osmosis

Keywords

  • Brine reuse
  • Concentrate management
  • Lysimeters
  • Salinity
  • Stomatal conductance
  • Transpiration

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Forestry
  • Atmospheric Science
  • Global and Planetary Change

Cite this

Consumptive water use and stomatal conductance of Atriplex lentiformis irrigated with industrial brine in a desert irrigation district. / Jordan, Fiona L.; Yoklic, Martin; Morino, Kiyomi; Brown, Paul W; Seaman, Robert; Glenn, Edward P.

In: Agricultural and Forest Meteorology, Vol. 149, No. 5, 07.05.2009, p. 899-912.

Research output: Contribution to journalArticle

Jordan, Fiona L. ; Yoklic, Martin ; Morino, Kiyomi ; Brown, Paul W ; Seaman, Robert ; Glenn, Edward P. / Consumptive water use and stomatal conductance of Atriplex lentiformis irrigated with industrial brine in a desert irrigation district. In: Agricultural and Forest Meteorology. 2009 ; Vol. 149, No. 5. pp. 899-912.
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