Green-ampt—model to predict surge irrigation phenomena

M. A. Killen, Donald C Slack

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A significant advantage attributed to surge flow irrigation is that for the same volume of water applied the stream will advance farther along the furrow than with continuous flow. Where this advance phenomenon exists, the reduction in runoff and deep percolation will improve uniformity and application efficiency. The mechanism for improvement in advance time has generally been ascribed to surface sealing and surface layer consolidation. However, these phenomena do not satisfactorily explain improved advance times in sandy soils. The Green-Ampt model combined with a simple redistribution model is used to illustrate the effects of reduced wetting front suction due to intermittent wetting on the instantaneous infiltration rate on two soils. The effect of various surge cycle times on the volume infiltrated versus time is also predicted by the model. This approach to modeling infiltration under surge irrigation shows considerable potential for determining the effect of surge irrigation on a range of soil textures, and as a design tool for optimizing surge cycle times.

Original languageEnglish (US)
Pages (from-to)575-584
Number of pages10
JournalJournal of Irrigation and Drainage Engineering
Volume113
Issue number4
DOIs
StatePublished - 1987

Fingerprint

surge irrigation
Irrigation
irrigation
Soils
Infiltration
Wetting
Soil
infiltration (hydrology)
Runoff
wetting front
infiltration
Consolidation
Textures
furrows
soil texture
sandy soils
Suction
runoff
sealing
wetting

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Civil and Structural Engineering
  • Water Science and Technology

Cite this

Green-ampt—model to predict surge irrigation phenomena. / Killen, M. A.; Slack, Donald C.

In: Journal of Irrigation and Drainage Engineering, Vol. 113, No. 4, 1987, p. 575-584.

Research output: Contribution to journalArticle

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