Fecha/hora: 11/06/2024 07:11:33

Biblioteca(s): | INIA La Estanzuela; INIA Treinta y Tres.
Fecha corriente: | 09/09/2014
Fecha de la última actualización: | 11/11/2019
Autoria: | HERNÁNDEZ, J.; BERGER, A.; DEAMBROSI, E.; LAVECCHIA, A.
Afiliación: | ANDRES GUSTAVO BERGER RICCA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DEAMBROSI CHURRUT, ENRIQUE GERMÁN, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; LAVECCHIA, ANDRÉS, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.
Título: | Soil phosphorus tests for flooded rice grown in contrasting soils and cropping history.
Año de publicación: | 2013
Fuente/Imprenta: | Communications in Soil Science and Plant Analysis, v. 44, n. 7, p. 1193-1210, 2013.
ISSN: | 1532-2416.
DOI: | 10.1080/00103624.2012.756000
Idioma: | Inglés
Notas: | Article history: Received 22 April 2011; accepted 29 November 2011.

Contenido:

Abstract:
Soil phosphorus (P) tests for flooded rice (Oryza sativa L.) generally present uncertainties for estimating P availability. Bray 1, 1% citric acid, Mehlich 3, Olsen extractants (dry samples), and Bray 1 extractant after 3 days (BI3) and 7 days (BI7) of anaerobic incubations were evaluated to estimate P availability for rice in 43 Uruguayan soils. Field trials were conduced at each site (0, 13, 26, and 39 kg P applied ha?1). Relative yield and absolute and relative yield increases were determined. Extracted P was variable for the different tests. For silty soils, P availability was better estimated by citric acid, Mehlich 3, and Bray 1, with similar soil P critical concentrations (6?8 mg P kg?1). The BI3 and BI7 tests showed greater soil P critical concentration but poorer correlations with yield indexes. This study contributes to the scientific basis of P fertilization for flooded rice, promoting more effective fertilizer use and minimizing environmental P losses.

Palabras-Clave: | ANÁLISIS DE FÓSFORO (SUELO); ARROZ INUNDADO; CONCENTRACIONES CRÍTICAS DE FÓSFORO; RICE CROP; SOIL P CRITICAL CONCENTRATIONS; SOIL P TEST.
Thesagro: | ARROZ; FERTILIDAD DE SUELOS; FOSFORO; ORYZA SATIVA; URUGUAY.
Categoría del tema: | F04 Fertilización
Registro original: | INIA La Estanzuela (LE)

Ejemplares:

LE - (100140-1) - PXI - AP - DD - PP/CSSP/2013 -  -  - DIS
TT - (100019-1) - PXI - AP - DD - PP/Deambrosi/Arb/2013/1 -  -  - DIS