Effect of different irrigation times and wastewater of a leaven factory on yield, yield components and harvest index of faba bean (Vicia faba L.)

摘要

In order to suitable use of wastewater in sustainable agriculture a field study was carried out at the field of Iran Mayeh factory located at Gharamalek region of Tabriz, Iran. Experiment was arranged in factorial based on randomize complete block design (RCBD) in three replications during the spring of 2012. In this study the effects of irrigation times and wastewater concentration on yield, yield components and harvest index were evaluated. Experimental factors were irrigation times in three levels (I1= one time irrigation with determined concentration of wastewater, I2= twice irrigation with determined concentration of wastewater, I3= irrigation in whole period of plant growth with determined concentration of wastewater) and wastewater concentration in 6 levels (A= irrigation with pure water (control), C1=15% wastewaters +85% pure water, C2= 30% wastewaters +70% pure water, C3= 45% wastewaters +55% pure water, C4= 60% wastewaters +40% pure water, P= 100% wastewater). Results indicated that irrigation times had a significant effect on yield and yield components such as pod number, grain number per pod, grain yield and harvest index. Combined effect of irrigation times and wastewater concentration were significant on pod number, grain number per pod, grain yield and harvest index, although this effect was not significant for biological yield. Treatments evaluation showed that increasing wastewater concentration up to 60% increased grain number, grain yield and harvest index, however, at higher concentrations a significant decrease were observed in all traits. It seems that controlled using of wastewater of Iran Mayeh factory (leaven producing factory) with determined concentrations of wastewater at low irrigation times could bean effective practice in increasing of faba bean yield at this region