| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000455216 |
| ISSN: | 0103-9016 |
| Autores: | Tiecher, Tales1 Brunetto, Gustavo2 Rheinheimer, Danilo2 Gatiboni, Luciano Colpo6 Comin, Jucinei José4 Schmitt, Djalma Eugênio3 Tiecher, Tadeu Luis5 Ambrosini, Vítor Gabriel1 |
| Instituciones: | 1Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Porto Alegre, Rio Grande do Sul. Brasil 2Universidade Federal de Santa Maria, Centro de Ciencias Rurais, Santa Maria, Rio Grande do Sul. Brasil 3Universidade Federal de Santa Catarina, Centro de Ciencias Rurais, Curitibanos, Santa Catarina. Brasil 4Universidade Federal de Santa Catarina, Centro de Ciencias Agrarias, Florianopolis, Santa Catarina. Brasil 5Instituto Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul. Brasil 6North Carolina State University, Department of Crop and Soil Sciences, Raleigh, Carolina del Norte. Estados Unidos de América |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 3 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | This study evaluated P pools after nine years of successive application of either pig slurry (PS) or deep pig litter (DL) in a no-till Ultisol from southern Brazil. The experiment was established in Dec 2002 with the treatments control, application of 90 and 180 kg N ha−1 N as PS and as DL. In Mar 2010, soil samples were taken at six layers up to 30 cm deep. Total organic and inorganic P were assessed by the ignition method, and P compounds classes were evaluated by 31P-NMR spectroscopy. Total soil P increased proportionally with the P amount applied via DL and PS. Only DL application increased soil organic P, mainly at the highest dose and in the uppermost soil layers. The application of high doses of manure to these soils under no-till to meet crop N demands significantly increased P accumulation at the soil surface, especially with DL. This, in turn, increases the risk of contamination of water bodies due to P transfer from soil to rivers via runoff. The ignition method overestimates organic P compared to P-NMR. The highest proportion of organic P estimated by the ignition and P-NMR methods, at surface layers in the control suggests that inorganic P is added to the plots treated, increasing inorganic P and decreasing organic P. Moreover, with no P additions to the control, inorganic soil P is removed by plants, causing an apparent increase in the organic P proportion |
| Disciplinas: | Agrociencias |
| Palabras clave: | Suelos, Fertilización, Fósforo, Estiércol, Ultisol, Brasil |
| Keyword: | Soils, Fertilization, Phosphorus, Manure, Ultisol, Brazil |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
