Publicação
Soil management system effects on N availability and tree productivity in chestnut planatations under Mediterranean conditions
| dc.contributor.author | Raimundo, Fernando | |
| dc.contributor.author | Coutinho, João | |
| dc.contributor.author | Martins, Afonso | |
| dc.contributor.author | Madeira, Manuel | |
| dc.date.accessioned | 2016-07-21T14:23:03Z | |
| dc.date.available | 2016-07-21T14:23:03Z | |
| dc.date.issued | 2015 | |
| dc.description.abstract | Soil tillage with chisel ploughing is the conventional soil management system in chestnut stands for fruit production in Northern Portugal. A study was developed to assess the effects of three soil management systems on in situ soil N mineralization dynamics, tree nutrition status and fruit productivity, in a 50-yr old chestnut stand. The treatments were: conventional tillage with a chisel ploughing twice a year (CT), no-tillage with rainfed improved pasture with leguminous and grasses plants (NIP), and no-tillage with spontaneous herbaceous vegetation - natural pasture (NP). The CT treatment showed a strong increase of the soil N mineral concentration following soil disturbance by tillage, but the cumulative net N mineralized along the year was significantly lower (51.8 kg ha-1) than in the NIP (85.1 kg ha-1) treatment. The NP treatment (65.9 kg ha-1) did not cause a reduction in the soil N mineralization when compared to the CT treatment. The mineralization rate (g mineralized N kg-1 total N) in 2004 was about 26, 30 and 38 in the treatments CT, NP and NIP, respectively. Treatments showed different soil N dynamics, the proportion of mineralized NO3--N being lower in the NP (10-48%) than in CT and NIP treatments (53-74%). Our study indicates that no-tillage systems improve the tree nutrition status and enhance productivity | pt_PT |
| dc.identifier.citation | "Revista de Ciências Agrárias". ISSN 0871-018X. 38 (4) (2015) p. 547-563 | pt_PT |
| dc.identifier.doi | http://dx.doi.org/10.19084/RCA15139 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.5/11859 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | SCAP | pt_PT |
| dc.subject | N mineralization | pt_PT |
| dc.subject | no-tillage | pt_PT |
| dc.subject | phosphorous | pt_PT |
| dc.subject | tree nutrition | pt_PT |
| dc.subject | chestnut | pt_PT |
| dc.title | Soil management system effects on N availability and tree productivity in chestnut planatations under Mediterranean conditions | pt_PT |
| dc.title.alternative | Efeitos do sistema de gestâo do solo na disponibilidade de N e produtividade de plantações de castanheiro em condições Mediterrâneas | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Lisboa, Portugal | pt_PT |
| oaire.citation.title | Revista de Ciências Agrárias | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |