Effect of irrigation from a point source (trickling) on oxygen flux and on root extension in the soil

M. Silberbush, B. Gornat, D. Goldberg

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

A two-dimensional trickle-irrigated soil model was examined in order to determine its aeration regime. Oxygen diffusion rate (O.D.R.) was used as an index of the soil aeration regime, and its influence on the development of root systems was determined. Volumetric soil air content was calculated from soil water tension data, using a retention curve. The root system was markedly concentrated at the periphery of the trickle-irrigated soil volume, while in the center there were few roots. An exponential correlation was found between root distribution and O.D.R., in which 20×10-8g O2×cm-2×min-1 was the critical value for root growth. There was a linear correlation between O.D.R. and volumetric air content which was affected by diffusion distance.

Original languageEnglish
Pages (from-to)507-514
Number of pages8
JournalPlant and Soil
Volume52
Issue number4
DOIs
StatePublished - 1 Sep 1979
Externally publishedYes

Keywords

  • Grumusol
  • O.D.R.
  • Oxygen flux
  • Root extension
  • Soil aeration
  • Soil model
  • Trickle irrigation
  • Wheat

ASJC Scopus subject areas

  • Soil Science
  • Plant Science

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