Publication
Early-maturing annual legumes: an option for cover cropping in rainfed olive orchards
| dc.contributor.author | Rodrigues, M.A. | |
| dc.contributor.author | Dimande, Paulo | |
| dc.contributor.author | Pereira, Ermelinda | |
| dc.contributor.author | Ferreira, Isabel Q. | |
| dc.contributor.author | Freitas, Sara L. | |
| dc.contributor.author | Correia, Carlos M. | |
| dc.contributor.author | Moutinho-Pereira, José | |
| dc.contributor.author | Arrobas, Margarida | |
| dc.date.accessioned | 2017-01-11T16:10:29Z | |
| dc.date.available | 2017-01-11T16:10:29Z | |
| dc.date.issued | 2015 | |
| dc.description.abstract | Cover cropping is a major challenge in the sustainable management of rainfed olive orchards. From a 5 year study (2009–2014), the effect of a mixture of early-maturing and self-reseeding annual legumes (Legs) grown as a cover crop in a rainfed olive orchard was compared with a cover of natural vegetation fertilized with 60 kg nitrogen (N) ha−1 year−1 (NV +N), and a cover of natural vegetation not fertilized (NV −N). The study took place in NE Portugal. The following were assessed: (1) the performance of the covers by measuring ground cover percentages, dry matter yields and N content in aboveground biomass; (2) the soil fertility through chemical and microbiological assays and by growing plants in pot experiments; and (3) the nutritional status of olive trees and olive yields. Legumes gave higher ground-cover percentages, produced more biomass and accumulated more N in shoots in comparison to natural vegetation, whether fertilized or not. The results showed intense biological activity [microbial carbon (C) and N, CO2–C evolved in a laboratory incubation, metabolic quotient, total culturable fungi and bacteria, and acid phosphatase activity] in the 0–10 cm soil layer of the treatments producing more biomass (Legs and NV +N). However, soil available N was greater in soil samples from the Legs plot. N recoveries by turnip (Brassica rapa var. rapa L.) and rye (Secale cereale L.) grown in pot experiments were 84.4 and 60.2 mg pot−1 in soil samples from the Legs treatment and 29.4 and 27.1 mg pot−1 and 14.2 and 13.6 mg pot−1, respectively in NV +N and NV −N plots. Sown legumes appeared less effective in increasing organic C than natural vegetation. Nevertheless, in the Legs plot the increase of easily mineralizable C was proportionally higher than the increase of total organic C, which may mean that a more reactive pool of organic C is created, which may reduce the turnover of organic C and N in the soil. In the 10–20 cm soil layer, total organic C was significantly lower in Legs (14.0 g kg−1) than in NV −N (22.1 g kg−1) and N +NV (25.2 g kg−1) treatments, likely due to a priming effect caused by mineral N coming from the surface layer. Two years after the trial started, the N nutritional status of the olive trees was significantly higher in Legs than in natural vegetation plots even when 60 kg N ha−1 year−1 was applied. The cumulative olive yields in NV −N and NV +N plots were only 58.6 and 77.7 % in comparison to those found in the Legs plot, if only the last four harvests were considered, which were those influenced by the ground-cover treatments (2010–2013). | pt_PT |
| dc.description.sponsorship | Supported by PRODER under the project OlivaTMAD – Rede Temática de Informação e Divulgação da Fileira Olivícola em Trás-os-Montes e Alto Douro - Medida 4.2.2.2. The authors also thank Rita Diz, Ana Veiga Pinto, David Cabral and José Rocha for laboratorial assistance. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Rodrigues, M.A.; Dimande, Paulo; Pereira, Ermelinda; Ferreira, Isabel Q.; Freitas, Sara; Correia, Carlos M.; Moutinho-Pereira, José; Arrobas, Margarida (2016). Early-maturing annual legumes: an option for cover cropping in rainfed olive orchards. Nutrient Cycling in Agroecosystems. ISSN 1385-1314. 103:2, p. 153-166 | pt_PT |
| dc.identifier.doi | 10.1007/s10705-015-9730-5 | pt_PT |
| dc.identifier.issn | 1385-1314 | |
| dc.identifier.uri | http://hdl.handle.net/10198/13730 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Annual legumes | pt_PT |
| dc.subject | Cover cropping | pt_PT |
| dc.subject | Olea europaea | pt_PT |
| dc.subject | Olive nutrition | pt_PT |
| dc.subject | Soil available nitrogen | pt_PT |
| dc.subject | Soil microbial activity | pt_PT |
| dc.title | Early-maturing annual legumes: an option for cover cropping in rainfed olive orchards | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 166 | pt_PT |
| oaire.citation.issue | 2 | pt_PT |
| oaire.citation.startPage | 153 | pt_PT |
| oaire.citation.title | Nutrient Cycling in Agroecosystems | pt_PT |
| oaire.citation.volume | 103 | pt_PT |
| person.familyName | Rodrigues | |
| person.familyName | Pereira | |
| person.familyName | Arrobas | |
| person.givenName | Manuel Ângelo | |
| person.givenName | Ermelinda | |
| person.givenName | Margarida | |
| person.identifier.ciencia-id | 371D-DF0D-8D68 | |
| person.identifier.ciencia-id | 3916-218E-1629 | |
| person.identifier.ciencia-id | 971C-B85B-1EC0 | |
| person.identifier.orcid | 0000-0002-5367-1129 | |
| person.identifier.orcid | 0000-0002-9431-5059 | |
| person.identifier.orcid | 0000-0002-4652-485X | |
| person.identifier.rid | O-1721-2016 | |
| person.identifier.scopus-author-id | 35270106800 | |
| person.identifier.scopus-author-id | 35222107200 | |
| person.identifier.scopus-author-id | 8575728800 | |
| rcaap.rights | restrictedAccess | pt_PT |
| rcaap.type | article | pt_PT |
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