Improving agricultural input efficiencies canlead tobothdecreasing production costs and saving the environmentand landscape. Thereforeusing new irrigating systems thatenablefertigation canbe a proper alternativeforconservativefurrowirrigation. Withthe aim of optimizing land, water and nitrogen use, during previous yearsin aresearchfarm ofKaraj- Iran atrial was carried out undertape-dripirrigation and in stripfactorial plot with arandomized completeblock arrangement with2 levels ofOn-RowsSpacing (14 and 20 cm), 2 levelsof Planting Pattern ( 40-60 and 40-50) and 4 levelsof Nitrogen (zero(N0), 50 (N1), 75 (N2) and 100 (N3) percentof the fertilizerrecommendation for furrow irrigation). Nitrogenaccumulationin separate parts of Sugarbeet and inthewholeplantdetermined, then Nitrogen Uptake Efficiency(UPE), Nitrogen Utilization EfficiencyofSugarand Whitesugarproduction (UTEs, UTEws) and Nitrogen UseEfficiencyto produce Sugar and White sugar(NUEs and NUEws) were calculated. A compound analysis wasn’tallowed byFmaxtestthus results of each year was analyzed separately. On-rows Spacing levels didn’t show anysignificant differences among studied Traits and Planting Pattern except on a single ground organ and whole plantnitrogenaccumulation, UPE and UTE. Nitrogen fertilizerhasasignificant influenceonall traits in bothyears. Based on theresults it has beenobserved that more the nitrogenfertilizerused more therateof nitrogenaccumulation insugar beetsoccurred. However, by increasing useofnitrogen fertilizer UPE improved, but UTE and NUE decreased.
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