Relationships among runoff, losses of soil and nutrient with rainfall characteristics and soil management practices in a hilly vineyard (Comunicazione a convegno)

Type
Label
  • Relationships among runoff, losses of soil and nutrient with rainfall characteristics and soil management practices in a hilly vineyard (Comunicazione a convegno) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Opsi F., Biddoccu M., Cavallo E. (2012)
    Relationships among runoff, losses of soil and nutrient with rainfall characteristics and soil management practices in a hilly vineyard
    in 4th International Conference Eurosoil 2012, Bari, 2-6 July
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Opsi F., Biddoccu M., Cavallo E. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Imamoter-CNR (literal)
Titolo
  • Relationships among runoff, losses of soil and nutrient with rainfall characteristics and soil management practices in a hilly vineyard (literal)
Abstract
  • Runoff and soil losses caused by natural rainfall events were monitored through a 10-years period of observation in three vineyard experimental plots, located in Alto Monferrato, a vine-growing area of Piedmont, NW Italy. The plots are characterized by slope of about 15% and clay soil . Different soil managing practices were adopted in inter-rows of each plot, i.e. controlled grass cover (GC), conventional tillage (CT) and reduced tillage (RT). The rainfall characteristics, runoff discharge, concentration in the water of soil and nutrients were measured. More than 150 rainfall events produced runoff, 63 resulted to be erosive and 55 events recorded losses of nutrients. The data set was elaborated to investigate relationships among runoff, soil and nutrient losses, with rainfall amount, intensity and kinetic energy. The amounts of water, soil and nutrients that run away from the vineyard resulted to be differently related to the season, rainfall characteristics, soil surface conditions. Each year, few rainfall events were responsible of most of the annual soil erosion. The collected data showed that the soil management practices have strongly affected runoff and soil losses. Particularly, considering the soil losses and the vine production, the reduced tillage has proved to be the worst practice for managing the inter-rows. Conversely, the grass cover has a relevant role in reducing water (up to 36%) and soil losses (up to 88%) , mainly during summer events characterized by high rainfall intensities. The protective effect of grass cover was also noted in the reduction of nitrogen losses, about 60%. (literal)
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