Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 495668
Title Runoff and sediment yield of tilled and spontaneous grass-covered olive groves grown on sloping land
Author(s) Palese, A.M.; Ringersma, Jacquelijn; Baartman, J.E.M.; Peters, P.; Xiloyannis, C.
Source Soil Research 53 (2015)5. - ISSN 1838-675X - p. 542 - 552.
DOI http://dx.doi.org/10.1071/SR14350
Department(s) FB BIB Documentation & Publishing Services
FB BIB Digital production centrum
Soil Physics and Land Management
PE&RC
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) conservation measures - natural resources - nutrient losses - soil management
Abstract

Soil erosion in olive groves is a widespread phenomenon in the Mediterranean Basin. Many studies have investigated the effects of tillage and herbaceous ground cover (spontaneous or seeded) in their effectiveness to reduce soil erosion in a wide range of Mediterranean sites under different pedoclimatic and topographic conditions. The present study was performed in Ferrandina, southern Italy: a small drip-type rainfall simulator was used on square microplots (0.25×0.25m) to evaluate the propensity to erosion of a steep rain-fed olive grove (mean slope ∼10%) with a sandy loam soil by measuring runoff and sediment load under extreme rain events. Two types of soil management were compared: (1) spontaneous grasses as ground cover (GC) providing a maximum ground cover close to 100%; and (2) tillage (T). In the tillage treatment, a further distinction was made between runoff and sediment produced 1 day (T1) and 10 days (T2) after tillage in order to assess the temporal evolution of tillage effects. The results show that GC reduced surface runoff to approximately one-third and soil losses to zero compared with T1. T2 microplots, tested 10 days after tillage, produced only one-tenth the sediment compared with T1 microplots that were subjected to rainfall simulations 1 day after tillage. Total runoff between the two tilled microplots was similar, although runoff on T1 microplots increased steadily over time whereas runoff on T2 microplots remained stable over the duration of simulations. Such findings may be useful to direct and strengthen the policy towards measures to prevent further soil degradation, as clearly requested by the European Union via the cross-compliance concept. A further economic recognition to the olive growers for the achievable environmental benefits could convince them to a shift towards alternative soil management strategies.

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