Abstract
The environmental impact of irrigating a maize field with weathered olive mill wastewater (OMW) for 5 years was assessed. The use of the weathered OMW added the following concentrations of nutrients to the field: 11.8. t/ha/yr carbon, 1033. kg/ha/yr total nitrogen, 23.8. kg/ha/yr phosphorous and 4161. kg/ha/yr potassium. The maize field received 6 times more nitrogen, 50 times more potassium and 2 times less phosphorous than the recommended fertilization rates. The presence of carbon increased microbial activity for organic nitrogen breakdown and the decomposition rate of organic nitrogen. No significant increase was observed of heavy metal accumulation in the soil. Electrical conductivity in the soil remained below the salinization threshold. No direct exposure values were exceeded. No impact on groundwater quality was observed. Irrigation of crops like maize with weathered OMW could be part of a viable decentralized solution for olive mill wastewater use in areas with low organic matter and high irrigation demand.
| Original language | English |
|---|---|
| Pages (from-to) | 1125-1132 |
| Number of pages | 8 |
| Journal | Agricultural Water Management |
| Volume | 98 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - May 15 2011 |
Fingerprint
Keywords
- Environmental impacts
- Marginal water
- Non-conventional fertilization
- Water scarcity
ASJC Scopus subject areas
- Agronomy and Crop Science
- Soil Science
- Water Science and Technology
- Earth-Surface Processes
Cite this
Olive mill wastewater irrigation of maize : Impacts on soil and groundwater. / Moraetis, D.; Stamati, F. E.; Nikolaidis, N. P.; Kalogerakis, N.
In: Agricultural Water Management, Vol. 98, No. 7, 15.05.2011, p. 1125-1132.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Olive mill wastewater irrigation of maize
T2 - Impacts on soil and groundwater
AU - Moraetis, D.
AU - Stamati, F. E.
AU - Nikolaidis, N. P.
AU - Kalogerakis, N.
PY - 2011/5/15
Y1 - 2011/5/15
N2 - The environmental impact of irrigating a maize field with weathered olive mill wastewater (OMW) for 5 years was assessed. The use of the weathered OMW added the following concentrations of nutrients to the field: 11.8. t/ha/yr carbon, 1033. kg/ha/yr total nitrogen, 23.8. kg/ha/yr phosphorous and 4161. kg/ha/yr potassium. The maize field received 6 times more nitrogen, 50 times more potassium and 2 times less phosphorous than the recommended fertilization rates. The presence of carbon increased microbial activity for organic nitrogen breakdown and the decomposition rate of organic nitrogen. No significant increase was observed of heavy metal accumulation in the soil. Electrical conductivity in the soil remained below the salinization threshold. No direct exposure values were exceeded. No impact on groundwater quality was observed. Irrigation of crops like maize with weathered OMW could be part of a viable decentralized solution for olive mill wastewater use in areas with low organic matter and high irrigation demand.
AB - The environmental impact of irrigating a maize field with weathered olive mill wastewater (OMW) for 5 years was assessed. The use of the weathered OMW added the following concentrations of nutrients to the field: 11.8. t/ha/yr carbon, 1033. kg/ha/yr total nitrogen, 23.8. kg/ha/yr phosphorous and 4161. kg/ha/yr potassium. The maize field received 6 times more nitrogen, 50 times more potassium and 2 times less phosphorous than the recommended fertilization rates. The presence of carbon increased microbial activity for organic nitrogen breakdown and the decomposition rate of organic nitrogen. No significant increase was observed of heavy metal accumulation in the soil. Electrical conductivity in the soil remained below the salinization threshold. No direct exposure values were exceeded. No impact on groundwater quality was observed. Irrigation of crops like maize with weathered OMW could be part of a viable decentralized solution for olive mill wastewater use in areas with low organic matter and high irrigation demand.
KW - Environmental impacts
KW - Marginal water
KW - Non-conventional fertilization
KW - Water scarcity
UR - http://www.scopus.com/inward/record.url?scp=79955124261&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955124261&partnerID=8YFLogxK
U2 - 10.1016/j.agwat.2011.02.006
DO - 10.1016/j.agwat.2011.02.006
M3 - Article
AN - SCOPUS:79955124261
VL - 98
SP - 1125
EP - 1132
JO - Agricultural Water Management
JF - Agricultural Water Management
SN - 0378-3774
IS - 7
ER -