Coupled crop and solid set sprinkler simulation model. II: Model application

In this work, applications of the coupled solid set sprinkler irrigation and crop model AdorSim introduced in the companion paper are presented. The sprinkler irrigation model is based on ballistic theory, while the crop model is based on \ICropWat. AdorSim\N was used to evaluate the effect of sprinkler spacing on seasonal irrigation water use (WU) and crop yield. The most relevant results were related to the characterization of advanced irrigation scheduling strategies. The differences in crop yield and WU derived from irrigating at different times of the day were estimated for two locations strongly differing in wind speed. Irrigation guidelines were established in these locations to relate gross water use and water stress induced yield reductions. Simulations were also applied to estimate adequate wind speed thresholds for irrigation operation. In the experimental conditions, thresholds of 2.0–2.5 m s\u-¹ proved effective to control yield reductions and to minimize WU.

[1]  J. M. Faci,et al.  Wind effects on solid set sprinkler irrigation depth and yield of maize (Zea mays) , 2003, Irrigation Science.

[2]  Enrique Playán,et al.  Analysis of an irrigation district in northeastern Spain: I. Characterisation and water use assessment , 2003 .

[3]  John L. Merriam,et al.  Farm irrigation system evaluation: a guide for management. , 1978 .

[4]  Enrique Playán,et al.  Analysis of an irrigation district in northeastern Spain: II. Irrigation evaluation, simulation and scheduling , 2003 .

[5]  P. Carrión,et al.  SIRIAS: a simulation model for sprinkler irrigation , 2001, Irrigation Science.

[6]  A. J. Clemmens,et al.  Irrigation Techniques and Evaluations , 1994 .

[7]  Richard H. Cuenca,et al.  Irrigation System Design: An Engineering Approach , 1989 .

[8]  L. S. Pereira,et al.  Crop evapotranspiration : guidelines for computing crop water requirements , 1998 .

[9]  Y. Fukui,et al.  Computer evaluation of sprinkler irrigation uniformity , 2004, Irrigation Science.

[10]  José Maria Tarjuelo,et al.  Modelling evaporation and drift losses in irrigation with medium size impact sprinklers under semi-arid conditions , 2000 .

[11]  D. C. Kincaid,et al.  Drop Size Distributions for Irrigation Sprinklers , 1996 .

[12]  Jack Keller,et al.  Sprinkle and Trickle Irrigation , 1990 .

[13]  Enrique Playán,et al.  Coupled crop and solid set sprinkler simulation model. I: Model development , 2004 .

[14]  Ido Seginer,et al.  Simulation of wind-distorted sprinkler patterns , 1991 .

[15]  J. Tarjuelo,et al.  SIRIAS: a simulation model for sprinkler irrigation , 2001, Irrigation Science.