Effects of wastewater from olive processing on seed germination and early plant growth of different vegetable species

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Abstract
The effects of wastewater from olive processing on seed germination and early plant growth of different vegetable species were examined. Three types of wastewater at different concentrations were tested: raw wastewater, wastewater with organic matter removed and deionized wastewater. Results generally indicate an inhibitory effect on seed germination and early plant growth by all treatments containing any kind of wastewater. Of the three types of effluent, raw wastewater had the greatest depressive effect, followed by deionized wastewater and finally effluent with organic matter removed. Barley showed the least sensitivity to phytotoxic effects while tomato was the plant most affected. The remaining vegetable species showed an intermediate sensitivity.

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