Effect of urban wastewater, spent mushroom compost, sheep manure and chemical fertilizer on physiological traits and growth of sugar beet (Beta Vulgaris L.)

In order to evaluate the effect of urban wastewater and different fertilizer treatments on growth and some physiological traits of sugar beet، a field experiment arranged as split plot in RCBD design with three replications at Research Station of Shahrekord University in 2013. The main factor including: irrigation with urban wastewater at 2-4 leaf stage، 8-12 leaf stage and irrigation with tap water (control) and four types of fertilizer including sheep manure، spent mushroom compost، chemical fertilizer and no fertilizer (control) in sub-plot. The results showed that the highest leaf area index with 4. 84 was obtained from sheep manure at 84 days after planting. Also، crop growth rate، dry shoot weigh to dry root weight ratio and biomass weight were higher in sheep manure than other fertilizer treatments. Under application of urban wastewater treatment، the amount of leaf area index، crop growth rate and net assimilation rate significantly were higher compared to tap water treatment. In this experiment the highest harvest index and extractable sugar percent belonged to tap water treatment.