SciELO - Scientific Electronic Library Online

 
vol.34 issue2Physiological responses of oil palm (Elaeis guineensis Jacq.) seedlings under different water soil conditionsMechanisms for tolerance to water-deficit stress in plants inoculated with arbuscular mycorrhizal fungi. A review author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Agronomía Colombiana

Print version ISSN 0120-9965

Abstract

BAYONA-RODRIGUEZ, Cristihian Jarri  and  ROMERO, Hernán Mauricio. Estimation of transpiration in oil palm (Elaeis guineensis Jacq.) with the heat ratio method. Agron. colomb. [online]. 2016, vol.34, n.2, pp.172-178. ISSN 0120-9965.  https://doi.org/10.15446/agron.colomb.v34n2.55649.

Sap flow sensors were installed on the leaf petioles of 5-year-old oil palms (Elaeis guineensis Jacq.) to measure the xylem water flow for 12 days based on the heat ratio method (HRM). It was found that young leaves have higher sap flow rates, reaching values of over 250 cm3 h-1, and that sap flow fluctuations are directly related to weather conditions, particularly the vapor pressure deficit (VPD) component. It was observed that the sap flow rates remained constant and very close to 0 cm3 h-1 between 18:00 and 6:00 h and that the upward and downward movement of sap was faster during the day, with peak levels between 9:00 and 16:00 h. Under the evaluation conditions, the oil palm crop transpiration was estimated to be 1.15 mm H2O/ha-day. The HRM is a highly repeatable method and an useful tool to quantify the total oil palm transpiration. It could potentially be applied to irrigation.

Keywords : Transpiration; sap flow; vapor pressure deficit.

        · abstract in Spanish     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License