تاثير آبياري با فاضلاب تصفيه شده خانگي بر عملكرد و كيفيت گوجه فرنگي

Effect of irrigation by treated wastewater on the yield and quality of tomato

A field study was conducted in the College of Agriculture at Ferdowsi University of Mashhad to investigate the effect of irrigation by municipal treated wastewater on the yield and quality of tomato. Five irrigation treatments were applied in a clay loam soil in a randomized block design as follows; Tl - Irrigation by treated wastewater during all growing season, T2 - Alternate irrigation by treated wastewater and well water, T3 - Irrigation with well water and use of animal manure, T4 - Irrigation with well water plus fertilizer (urea), T5 - Irrigation with well water only. The results showed that tomato yield in all of the treatments exceeded that of check (T5). Maximum yield and total fresh and dry weight of plants were obtained from T1 and T3 respectively, in comparison with T5. Concentration of micronutrients and heavy metals in plant tissues of each treatment were higher than check. However, Fe concentration was highest in all treatments while cadmium concentration was lowest. Microbial contamination was considerably higher in T1 and T2 treatments.