Effect of treated municipal wastewater on nickel concentration of pepper and soil

The use of treated municipal wastewater for irrigation in arid and semi-arid regions like Iran was considered in recent decades. Wastewater irrigation could cause excessive accumulation of heavy metals in agricultural soils. Soil contamination with this elements lead to heavy metals uptake by crops and thus affect food chain. In this research investigate the distribution of nickel in pepper tissues after irrigation with wastewater. For this reason a pot experiment was carried out and a completely randomized design was used. Different percents of treated wastewater were applied for irrigation. Increasing the percent of wastewater had no significant effect on soil available nickel concentrations. Soil available nickel was still less than allowable. Wastewater irrigation did not affect nickel tissue concentrations. Health risk index values of less than 1 indicate a relative absence of health risks associated with the ingestion of fruits of pepper.

کلیدواژه ها:

Irrigation ، Municipal Wastewater ، Nickel ، Shahrekord ، Sweet Chilli