CSIRO PublishingCerdà, A.; González-Pelayo, Ó.; Giménez Morera, A.; Jordán, A.; Pereira, P.; Novara, A.; Brevik, EC.... (2016). Use of barley straw residues to avoid high erosion and runoff rates on persimmon plantations in Eastern Spain under low frequency-high magnitude simulated rainfall events. Soil Research. 54(2):154-165. doi:10.1071/SR15092.The use of barley straw residues to avoid high erosion and 1 runoff rates on persimmon plantations in Eastern Spain under low frequency -high magnitude simulated rainfall events Artemi Cerdà (1) Óscar González-Pelayo (1), Antonio Giménez-Morera (2), Antonio Jordán (3), Paulo Pereira (4), Agata Novara (5), Eric C. Brevik (6), Massimo Prosdocimi (7), Majid Mahmoodabadi (8), Saskia Keesstra (9), Fuensanta García Orenes (10), Coen Ritsema (9) (1) Soil Erosion and Degradation Research Group, Department of Geography, University of Valencia, Valencia, Spain. oscar.gonzalez-pelayo@uv.es and artemio.cerda@uv.es / www.soilerosion.eu Cerdà, Artemi, Óscar González-Pelayo, Antonio Giménez-Morera, Antonio Jordán, Paulo Pereira, Agata Novara, Eric C. Brevik, Massimo Prosdocimi, Majid Mahmoodabadi, Saskia Keesstra, Fuensanta García Orenes, and Coen Ritsema. The use of barley straw residues to avoid high erosion and runoff rates on persimmon plantations in Eastern Spain under low frequency -high magnitude simulated rainfall events. Soil Research. in press. . The straw mulch was found to be extremely efficient in reducing soil erosion rates.

Abstract:The purpose of this study was to assess how terracing affected overland flow and associated sediment losses, at the micro-plot scale (0.25 m 2 ), in recently burnt stands of the two principal forest types in north-central Portugal, i.e. mono-specific stands of Maritime Pine and Eucalypt. Terracing is an increasingly common practice of slope engineering in the study region but its impacts on runoff and erosion are poorly studied. Non-terraced plots at the Eucalypt and the Pine site revealed similar median runoff coefficients (rc: 20-30%) as well as comparable median sediment losses (15-25 g m -2 ) during the first seven months following wildfire. During the ensuing, slightly wetter 18-month period, however, non-terraced plots at the Pine site lost noticeably more sediments (in median, 90 vs. 18 g m -2 ), in spite the runoff response had remained basically the same (median rc: 33 vs. 28%). By contrast, terraced plots at the same Pine site lost hugely more sediments (in median, 1,200 g m -2 ) during this 18-month period. Terraced plots at the Eucalypt site even lost three times more sediments (in median, 3,600 g m -2 ). Ground cover and resistance to shear stress seemed to be key factors in the observed/inferred impacts of terracing.

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