A yearly spraying of olive mill wastewater on agricultural soil over six successive years: Impact of different application rates on olive production, phenolic compounds, phytotoxicity and microbial counts

详细信息	查看全文 | 推荐本文 |

• 作者：Salwa Magdich^a ; ^b ; ^c ; Raja Jarboui^a ; Bé ; chir Ben Rouina^b ; Makki Boukhris^c ; Emna Ammar^a ; ^{ammarenis@yahoo.fr}
• 关键词：OMW ; Olive mill wastewater ; HPLC ; High Pressure Liquid Chromatography ; GI ; germination index ; PCA ; Principal Component Analysis ; EC ; Electrical Conductivity
• 刊名：Science of the Total Environment
• 出版年：2012
• 期刊代码：63_00489697
• 类别：env
• 出版时间：15 July, 2012
• 卷：430
• 期：Complete
• 页码：209-216
• 文件大小：1039 K

摘要

Olive mill wastewater (OMW) spraying effects onto olive-tree fields were investigated. Three OMW levels (50, 100 and 200 m³ ha^鈭?#xA0;1 year^鈭?#xA0;1) were applied over six successive years. Olive-crop yields, phenolic compounds progress, phytotoxicity and microbial counts were studied at different soil depths. Olive yield showed improvements with OMW level applied. Soil polyphenolic content increased progressively in relation to OMW levels in all the investigated layers. However, no significant difference was noted in lowest treatment rate compared to the control field. In the soil upper-layers (0-40 cm), five phenolic compounds were identified over six consecutive years of OMW-spraying. In all the soil-layers, the radish germination index exceeded 85%. However, tomato germination test values decreased with the applied OMW amount. For all treatments, microbial counts increased with OMW quantities and spraying frequency. Matrix correlation showed a strong relationship between soil polyphenol content and microorganisms, and a negative one to tomato germination index.