|Book Group Author:||NA|
This paper describes the development of a new real-time infiltration prediction (REIP) system. This system estimates the soil infiltration characteristics for individual furrows from an infiltration curve of known shape and only one advance point measurement is required. This new method REIP opens the door towards real-time control and management of surface irrigated soils for achieving highly significant improvements in irrigation application efficiencies. To evaluate real-time control system (RTCS), two cotton fields (T and C) were calibrated using irrigation water balance and advance data from 42 furrow irrigation events. SIRMOD, a leading surface irrigation simulation model, was used with the scale infiltration parameters to assess the performance of RTCS. Using REIP, irrigation application efficiencies improved from 76 to 85% (field T) and 38 to 72% (field C). Comparison of irrigation application efficiencies under model strategies 5 (using only one full set of data) and 6 (using only one advance point by new method REIP) for field T achieved a 99.69% correlation.
|Pages:||52 - 53|
automatic control, automation, cotton, furrow irrigation,infiltration, irrigation, irrigation systems, irrigation water,precision agriculture, simulation models, surface irrigation, waterbalance, water use efficiency, Gossypium, Malvaceae, Malvales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, precisionfarming, site specific crop management, watering, Field Crops (FF005)(New March 2000), Soil Physics (JJ300), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Automation and Control (NN050), Agricultural andForestry Equipment (General) (NN400), Mathematics and Statistics (ZZ100)