Details

Autor(en) / Beteiligte

• Siddiqui, Samina
• Soomro, Kamran
• Khattak, Seema Anjum
• Saba, Sumbal Bahar

Titel

Long term application of wastewater on trace elements accumulation in the soil and sugarcane

Ist Teil von

• Journal of Himalayan earth sciences, 2017-01, Vol.50 (1A), p.76-85

Ort / Verlag

Peshawar: AsiaNet Pakistan (Pvt) Ltd

Erscheinungsjahr

2017

Quelle

Nexis

Beschreibungen/Notizen

• The tolerance limit of pH for irrigation water ranged from 6.0 to 9.0. [...]pH of all the effluent samples is within the permissible limit. According to Pescod (1992), threshold values of heavy metals in irrigation water leading to crop damage are 2000 mg L-1 for Zn, 200 mg L-1 for Cu, 5000 mg L-1 for Fe, 200 mg L1 1 Mn, 200 mg L-1 for Ni, 5000 mg L-1 for Pb and 10 mg L-1 for Cd. Pescod (1992) reported that when irrigation water is composed of mean content of Cd, Cu, Fe, Mn, Ni, Pb and Zn at 10, 200, 5000, 200, 200, 5000 and 2000 mg per L considered to be unsuitable for irrigation. [...]it is concluded that no accumulation of trace elements in sugarcane was observed in this study but continuous application of wastewater to irrigate the crops over a long period of time may cause server health risk to livestock and humans because it enters in their ecosystem through food chain. [...]it is necessary to regularly monitor the status of heavy metals in soils and crops irrigated with wastewater and risk associated to animals and humans.