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Journal of Agronomy

Year: 2004 | Volume: 3 | Issue: 4 | Page No.: 247-254
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Authors

A. El Hadrami

M. Belaqziz

M. El Hassni

S. Hanifi

A. Abbad

R. Capasso

L. Gianfreda

I. El Hadrami

Keywords

The present study revealed that traditional and industrial OMW samples were mildly acidic (pH= 4.10-4.50) and of a high conductivity of 18 to 56 mS cm-1. The chemical oxygen demand (COD) ranged from about 250 to 600 g L-1 while the biological demand of oxygen (DBO5) was about 3.05 to 3.39 g L-1. The two OMW samples showed also significant differences in contents of many other chemical elements such as sodium, chloride, phosphorus and soluble and bound phenolic compounds. Fertirrigation of some crops from Mediterranean basin (maize, wheat, chickpea and tomato) by various concentrations of OMW showed significant different influences as respect to controls both with regard to the germination and growth stages of the plants. High reduction of shoot and root weight, of ramification and leaf extension rates, accompanied with significant reduction of yield, was observed for all the studied crops, especially wheat. The results were confirmed by significant qualitative and quantitative differences of some stress indicators such as phenolic compounds, peroxidases, chlorophyll contents observed between OMW treated plants and controls. A reduction of chlorophyll contents accompanied with a stimulation of peroxidases activity and phenolic compounds accumulation was recorded for OMW treated plants. The physiological disorders and/or phytotoxicity attributed to the OMW phenolics were highlighted depending on the crops.
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How to cite this article

A. El Hadrami, M. Belaqziz, M. El Hassni, S. Hanifi, A. Abbad, R. Capasso, L. Gianfreda and I. El Hadrami, 2004. Physico-chemical Characterization and Effects of Olive Oil Mill Wastewaters Fertirrigation on the Growth of Some Mediterranean Crops. Journal of Agronomy, 3: 247-254.

DOI: 10.3923/ja.2004.247.254

URL: https://scialert.net/abstract/?doi=ja.2004.247.254

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