| dc.contributor.author |
Morell Soler, Francisco Joaquín |
| dc.contributor.author |
Cantero-Martínez, Carlos |
| dc.contributor.author |
Lampurlanés Castel, Jorge |
| dc.contributor.author |
Plaza Bonilla, Daniel |
| dc.contributor.author |
Álvaro-Fuentes, Jorge |
| dc.date |
2016-11-16T09:47:26Z |
| dc.date |
2011 |
| dc.date |
10000-01-01 |
| dc.identifier |
0361-5995 |
| dc.identifier |
http://hdl.handle.net/10459.1/58524 |
| dc.identifier |
https://doi.org/10.2136/sssaj2011.0030 |
| dc.identifier.uri |
http://hdl.handle.net/10459.1/58524 |
| dc.description |
Th e response of soil CO2 fl ux to long-term tillage practices (no-tillage, NT; minimum tillage, MT; conventional
tillage, CT) and N fertilization level (zero; medium, 60 kg N ha–1; high, 120 kg N ha–1) was studied during three
growing season in a rainfed Mediterranean agroecosystem. Soil CO2 fl ux was related to the crop growth, with the
highest fl ux during spring (i.e., March–May). Tillage and N fertilization eff ects on soil CO2 fl ux during growing
seasons depended on weather conditions: greater soil CO2 fl ux under MT and NT on dry years, greater under
CT and MT on a wet year. Nitrogen fertilization aff ected soil CO2 fl ux during this wet growing season: fl ux
with N fertilizer additions was higher than fl ux on the unfertilized plots. Th irteen years aft er establishment of the
experiment, the soil organic carbon (SOC) stock under long-term NT was 3.9 Mg C ha–1 greater than under CT
and 4.3 Mg C ha–1 greater than under MT. Th e SOC stocks with N fertilizer additions were 4 Mg C ha–1 greater
than the stock on unfertilized plots. Th e increase of C inputs with N fertilization was more pronounced under NT
than under MT or CT. For this reason the increased response of SOC stock to N fertilization is expected under
NT in a longer period of time. Th e product between soil water content and soil temperature explained between 75
and 94% of the seasonal variability of soil CO2 fl ux. However, soil CO2 fl ux and SOC stock were hardly related. |
| dc.description |
This work was supported by the Comision Interministerial de Ciencia y Tecnologia of Spain (Grants AGL 2004-07763-C02-02 and AGL2007- 66320-CO2-02/AGR). |
| dc.language |
eng |
| dc.publisher |
Soil Science Society of America |
| dc.relation |
MIECI/PN2004-2007/AGL2004-07763-C02-02 |
| dc.relation |
MIECI/PN2004-2007/AGL2007-66320-C02-02/AGR |
| dc.relation |
Reproducció del document publicat a https://doi.org/10.2136/sssaj2011.0030 |
| dc.relation |
Soil Science Society of America Journal, 2011, vol. 75, núm. 5, p. 1874-1884 |
| dc.rights |
(c) Soil Science Society of America, 2011 |
| dc.rights |
info:eu-repo/semantics/restrictedAccess |
| dc.subject |
Conventional Tillage |
| dc.subject |
Nitrogen level factor |
| dc.subject |
Growing season |
| dc.title |
Soil carbon dioxide flux and organic carbon content: effects of tillage and nitrogen fertilization |
| dc.type |
article |
| dc.type |
publishedVersion |
