Maintaining environmental and productivity sustainability of a nonhomogenous furrow set in different agrolandscapes.

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Year Published: 2004
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Author: Popova, Z. ; Mailhol, J. C. ; Ruelle, P. ; Varlev, I. ; Gospodinov, I.
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Abstract:

The impact of distribution uniformity on environment and productivity under furrow irrigation was evaluated for different agro-landscapes in France and Bulgaria. The analysis take uniformity into account over 30-40 simultaneously irrigated furrows. The FURMOD and SOFIP models were compared in terms of robustness and convenience of use, and validated with data from field observation. (FURMOD is a model allowing the evaluation of water distribution, deep percolation and runoff losses depending on application time and depth, soil infiltration parameters, water deficit in the root zone and lateral nonuniformity of the advance process; SOFIP is a simulation model analysing the impact of a furrow irrigation practice on deep percolation and crop productivity). The role of irrigation practice in increasing the efficiency of the use of land and water resources was investigated over a series of years. The study showed that maintenance of environmental and productivity stability requires reduction of heterogeneity sources, especially in case of high irrigation requirements.

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Keywords:

agricultural land, ecological balance, environmentalfactors, furrow irrigation, irrigation requirements, irrigationscheduling, land use, landscape ecology, percolation, rhizosphere,runoff, simulation models, soil water, sustainability, water resources,water use efficiency, Bulgaria, France, Western Europe, Europe,Mediterranean Region, Developed Countries, European Union Countries,OECD Countries, Balkans, Southern Europe, crop productivity, WaterResources (PP200), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management], SoilFertility (JJ600), Plant Production (FF100)

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