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Open AccessFeature PaperArticle

Effects of Tractor Passes on Hydrological and Soil Erosion Processes in Tilled and Grassed Vineyards

1
Institute for Agricultural and Earthmoving Machines (IMAMOTER), National Research Council of Italy, Strada delle Cacce, 73, 10135 Torino, Italy
2
Interuniversity Department of Regional and Urban Studies and Planning (DIST), Politecnico di Torino and Università di Torino, Castello del Valentino, Viale Mattioli, 39, 10125 Torino, Italy
*
Author to whom correspondence should be addressed.
Water 2019, 11(10), 2118; https://doi.org/10.3390/w11102118
Received: 31 August 2019 / Revised: 5 October 2019 / Accepted: 7 October 2019 / Published: 12 October 2019
(This article belongs to the Special Issue The Effect of Hydrology on Soil Erosion)
Soil erosion is affected by rainfall temporal patterns and intensity variability. In vineyards, machine traffic is implemented with particular intensity from late spring to harvest, and it is responsible for soil compaction, which likely affects soil hydraulic properties, runoff, and soil erosion. Additionally, the hydraulic and physical properties of soil are highly influenced by vineyards’ inter-rows soil management. The effects on soil compaction and both hydrological and erosional processes of machine traffic were investigated on a sloping vineyard with different inter-row soil managements (tillage and permanent grass cover) in the Alto Monferrato area (Piedmont, NW Italy). During the investigation (November 2016–October 2018), soil water content, rainfall, runoff, and soil erosion were continuously monitored. Field-saturated hydraulic conductivity, soil penetration resistance, and bulk density were recorded periodically in portions of inter-rows affected and not affected by the machine traffic. Very different yearly precipitation characterized the observed period, leading to higher bulk density and lower infiltration rates in the wetter year, especially in the tilled vineyard, whereas soil penetration resistance was generally higher in the grassed plot and in drier conditions. In the wet year, management with grass cover considerably reduced runoff (−76%) and soil loss (−83%) compared to tillage and in the dry season. Those results highlight the need to limit the tractor traffic, in order to reduce negative effects due to soil compaction, especially in tilled inter-rows. View Full-Text
Keywords: vineyards; soil management; tractor traffic; hydrological properties; erosion; runoff; hydraulic conductivity; soil water conservation vineyards; soil management; tractor traffic; hydrological properties; erosion; runoff; hydraulic conductivity; soil water conservation
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Capello, G.; Biddoccu, M.; Ferraris, S.; Cavallo, E. Effects of Tractor Passes on Hydrological and Soil Erosion Processes in Tilled and Grassed Vineyards. Water 2019, 11, 2118.

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