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Article: Impact of Sewage Sludge Compost Utilization on Chemical Properties of Olive Grove Soils
- Article from:
- Compost Science & Utilization
- Article date:
- October 1, 2006
- Author:
CopyrightCopyright J.G. Press Inc. Autumn 2006. Provided by ProQuest LLC. (Hide copyright information)
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Field experiments were conducted for four years, between 1998 and 2002, in two olive grove soils of adult olive orchards (Olea europaea L. cv. Cornicabra) in a clay loam soil in Sesefta (Toledo, Spain) and in a sandy loam soil in Aranjuez (Madrid, Spain). There were four treatments, sewage sludge compost (SSC), sewage sludge compost plus urea (SSC+U), urea (U) and control (C). Each treatment was replicated four times and two depths were studied (0-15 and 15-30 cm). Once a year, before spreading sewage sludge compost, soil samples were taken at depths of 0 to 15 cm and 15 to 30 cm. Organic matter, total Kjeldhal nitrogen, phosphorus availability, pH, and electric conductivity were measured. ...