Publication
Effect of composted sewage sludge amendment on soil nitrogen and phosphorus availability
| dc.contributor.author | Coutinho, João | |
| dc.contributor.author | Arrobas, Margarida | |
| dc.contributor.author | Rodrigues, Olga | |
| dc.date.accessioned | 2011-06-21T15:24:38Z | |
| dc.date.available | 2011-06-21T15:24:38Z | |
| dc.date.issued | 1997 | |
| dc.description.abstract | Municipal sewage sludge previously composted with sawdust (CSS) was applied to an eutric sandy cambisol at rates of 7.5, 15.0, 22.5, and 30 g·kg-1. Incubation and pot experiments were conducted to evaluate CSS effectiveness on nitrogen (N) and phosphorus (P) soil availability and on plant nutrition. The CSS rates did not increase soil mineral N and had little effect on organic P and on labile forms of P. Efficiency of total applied P was 17% for the soil labile forms and 4.8% for the resin extractable fraction. In contrast, CSS significantly increased hydroxide extractable inorganic P and nonextractable soil P fraction. The major portion of the increment on nonextractable forms was at the expense of HC1 extractable P fraction [calcium (Ca)-bounded], dominant on the original CSS. Thus, chemical rather than biological reactions lead to the redistribution of CSS-borne P to more firmly held forms after its application to the soil. Ryegrass dry matter yield, N content, and N uptake did not increase in CSS-treated soils. Plant P content increased at the second harvest, but the effect was nil in the subsequent harvest. Total P uptake increased from 14.1 to 20.2 mg·pot-1, but percentage P recovery by ryegrass was modest, averaging 2.5% of the CSS-borne P. Results suggest that moderate application of CSS to agricultural systems are inadequate for crop growth but may contribute to nutrient recycling without environmental risks related to N and P loss. | por |
| dc.identifier.citation | Coutinho, João; Arrobas, Margarida; Rodrigues, Olga (1997). Effect of composted sewage sludge amendment on soil nitrogen and phosphorus availability. Communications in Soil Science and Plant Analysis. ISSN 0010-3624. 28:19, p. 1845-1857 | por |
| dc.identifier.doi | 10.1080/00103629709369920 | |
| dc.identifier.issn | 0010-3624 | |
| dc.identifier.uri | http://hdl.handle.net/10198/5294 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Taylor & Francis | por |
| dc.relation.ispartofseries | 28;19 | |
| dc.subject | Sewage Sludge | por |
| dc.subject | Phosphorus | por |
| dc.title | Effect of composted sewage sludge amendment on soil nitrogen and phosphorus availability | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 1857 | por |
| oaire.citation.startPage | 1845 | por |
| oaire.citation.title | Communications in Soil Science and Plant Analysis | por |
| person.familyName | Arrobas | |
| person.givenName | Margarida | |
| person.identifier.ciencia-id | 971C-B85B-1EC0 | |
| person.identifier.orcid | 0000-0002-4652-485X | |
| person.identifier.scopus-author-id | 8575728800 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | d057ae6b-331c-4980-967d-0ce4fe1bcf8a | |
| relation.isAuthorOfPublication.latestForDiscovery | d057ae6b-331c-4980-967d-0ce4fe1bcf8a |