The Effect of Using Untreated Industrial Wastewater for Irrigation of Rapeseed (Case study: Yeast Factory Raw Wastewater)
Document Type : Full Length Article
Authors
1 Environmental Engineering Research Center (EERC), Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
2 Sardroud Plant Protection Clinic, Sardroud, Tabriz, Iran
Abstract
The aim of this paper is to investigate the affects of untreated wastewater using yeast factory wastewater on the growth of rapeseed and two its dominant weeds: wild mustard (Sinapisarvensis) and Gares (Eremopyrum bonaepartis). The research was performed in both laboratory and greenhouse based on factorial method and completely randomized design. The experimental factors include wastewater concentration in 6 levels: Blanket and 25%, 50%, 75% and 100% concentrations of wastewater, besides irrigation one day with clean water and the other day with wastewater (wastewater/ water) as a first factor and herbal treatments in 3 levels: rapeseed, wild mustard and Gares along with the rapeseed were applied as a second factor. The results showed that the effect of wastewater using on growing traits of rapeseed and its weeds except the number of tiller per plant of Gares was significant. The use of raw wastewater caused plant completely death in all samples and different percentages of plant death were occurred by using of up 50% dilution of wastewater. In term of the plant death percentage, Wild Mustard showed less tolerance threshed in comparison with rapeseed and Gares.
Keywords
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