2 research outputs found
The effects of wastewater reuse on potato growth properties under greenhouse lysimeteric condition
In this study, raw and treated wastewaters were reused for potato
cultivation in order to verify the effect of wastewater on crop yield,
crop’s heavy metals’ concentration as well as some major
traits of potato. To this regard, a completely randomized test was
designed with five water treatments and three replications. The
watering were as follows: raw wastewater (T1), treated wastewater (T2),
a combination of 50 % raw wastewater and 50 % fresh water (T3), a
combination of 50 % treated wastewater and 50 % fresh water (T4), and
fresh water (T5). The experiments were run during October
2009–June 2010 in the greenhouse of Bu-Ali Sina University. The
results show that the effects of treatments were significant on the
length and number of stems per plant (p < 0.05). The number of nodes
and weight of tubers, crop yield and heavy metal (cadmium, nickel and
lead) concentration in shoots and tubers were also significant (p <
0.01). The results indicated that the highest length of stem (55.44 cm)
was obtained in T2 which had no significant differences from that of
T1. The maximum and minimum tuber weights and crop yield were obtained
in T1 and T5, respectively. Based on crop yield rate, the watering
ranked as follows: T1 > T3 > T2 > T4 > T5. The maximum and
minimum heavy metal values were observed in T1 and T5, respectively.
Based on the cadmium, nickel and lead accumulations in shoots and
tubers (except cadmium in shoots), the watering treatments ranked as:
T1 > T3 > T2 > T4 > T5