Naslov
Soil Organic Carbon and Nitrogen Stratification as an Indicator of Soil Quality in the Vineyards of Ravni Kotari, Croatia

Autori
Palumbo, Lydia ; Andersen, Brannon ; Brkljača, Mia ; Lewis, Gregory

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Annual Meeting of the American Association of Geographers 2016 / - , 2016

Skup
Annual Meeting of the American Association of Geographers

Mjesto i datum
San Francisco (CA), Sjedinjene Američke Države, 29.03.2016. - 02.04.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Soil ; vineyard ; carbon ; nitrogen ; cultivation

Sažetak
Soil degradation, especially the loss of organic carbon, in the Mediterranean region may pose significant threats to the region’s wine industry. However, little is known about the condition of the Mediterranean agricultural soils associated with viticulture in Croatia. Four vineyards under different management styles were studied in Ravni Kotari, Croatia, to compare the effect of soil management on the content of soil organic carbon (SOC) and nitrogen(SON) and the C:N ratio of soil organic matter. The four vineyards were characterized by calcareous clay loams, which pose challenges for viticulture because grapes require well-drained soils. Calcite was removed from soils prior to analyzing SOC and SON. In the non-carbonate fraction, SOC ranged from 0.43-4.5% and SON ranged from 0.04-0.37% for depths to 18 cm. No-till, crushed stone soil with conventional management had the highest SOC and SON and the highest C:N ratio (15:1) with the best soil structure. Tilled soils had intermediate SOC and SON that did not decrease with depth and the lowest C:N ratios, but organic management had higher SOC and SON content and a higher C:N ratio (11:1) than conventional (10:1). No-till soils had the lowest overall SOC and SON content, but a higher C:N ratio (12:1) than tilled soils. However, SOC and SON decreased rapidly with depth. Preliminary analyses suggest that, based on SOC and SON, tilled organic and crushed stone soils had the highest quality.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Poljoprivreda (agronomija)

POVEZANOST RADA