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Generalization of irrigation scheduling parameters using the growing degree days concept: application to a potato crop
Author(s) -
OjedaBustamante Waldo,
SifuentesIbarra Ernesto,
Slack Donald C.,
Carrillo Mauricio
Publication year - 2004
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.134
Subject(s) - irrigation scheduling , irrigation , agricultural engineering , growing degree day , scheduling (production processes) , low flow irrigation systems , schedule , irrigation management , computer science , environmental science , hydrology (agriculture) , mathematics , phenology , agronomy , mathematical optimization , engineering , geotechnical engineering , biology , operating system
An accurate irrigation scheduling methodology is necessary in crops with high water stress sensitivity and production cost. This involves the estimation of the scheduling parameters related with crop water requirements during phenological stages under different irrigation application systems. This paper presents several models to represent the parameters of irrigation scheduling based on growing degree days (GDD) such as: management allowed soil water depletion (MAD), rooting depth ( R d ) and crop coefficient ( K c ). The proposed models were applied accurately to schedule irrigation in two commercial fields of potato under two irrigation methods: surface and sprinkler irrigation. Results show that the model predicted irrigations in a consistent and logical manner. The proposed models are versatile, feasible and easily implemented in irrigation scheduling computer programs. Copyright © 2004 John Wiley & Sons, Ltd.