Phosphorus retention in some soils of the Argentinean Mesopotamia

Quintero, César; Boschetti, Graciela; Benavídez, R. A.

doi:10.1080/00103629909370299

Cited by 23 publications

(17 citation statements)

References 17 publications

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“…Jalali (2006) reported that after 1 day of incubation, for soils with high CaCO 3 content, 67-76% of applied P was fixed, while for soils with low CaCO 3 , 57-64% of applied P was fixed. The same results was reported by Quintero et al (1999) who indicated that 70% of added P was fixed in soils with high buffering capacity, whereas 30-40% of applied P was fixed in soils with low buffering capacity. This indicated that in soils with high Ca 2+ higher rates of P would be required to meet plant uptake (Quintero et al, 1999).…”

Section: Phosphorus Sorptionsupporting

confidence: 89%

“…The same results was reported by Quintero et al (1999) who indicated that 70% of added P was fixed in soils with high buffering capacity, whereas 30-40% of applied P was fixed in soils with low buffering capacity. This indicated that in soils with high Ca 2+ higher rates of P would be required to meet plant uptake (Quintero et al, 1999). Higher significant power correlations were found between P CaCl2 , P citrate , and P HCl with PBC and K F (Fig.…”

Section: Phosphorus Sorptionsupporting

confidence: 89%

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Relation between various soil phosphorus extraction methods and sorption parameters in calcareous soils with different texture

Jalali¹,

Jalali²

2016

Science of The Total Environment

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Section: Phosphorus Sorptionsupporting

confidence: 89%

Section: Phosphorus Sorptionsupporting

confidence: 89%

Relation between various soil phosphorus extraction methods and sorption parameters in calcareous soils with different texture

Jalali¹,

Jalali²

2016

Science of The Total Environment

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“…En el primer año la mayor producción de forraje se registró con la dosis de 100 kg P ha -1 , y en los años posteriores esta dosis no difirió significativamente del tratamiento con refertilización anual (Tabla 1). Estos niveles de producción concuerdan y aun superan a los obtenidos en otras zonas productoras (Quintero et al, 1995;Cangiano, 2011;Díaz Zorita y Gambaudo, 2007). Resumiendo, los NC de P Bray determinados variaron según el modelo ajustado y fueron menores para el lineal-plateau, mayores para el logarítmico e intermedios para cuadrático plateau y cuadrático.…”

Section: La Aplicación De P Incrementó (P<005) Launclassified

“…Para los suelos de la región pampeana húmeda, el fósforo (P) ha sido identificado como limitante para la producción de los cultivos (Sainz Rozas, Echeverría y Angelini, 2012) y se ha demostrado que su deficiencia restringe la producción forrajera de las pasturas de alfalfa (Quintero, Boschetti y Benavidez, 1995;Berardo y Marino, 2000b;Sevilla y Agnusdei, 2016). Por ello la fertilización fosfatada es una práctica recomendada, aunque aplicaciones en cantidades inadecuadas -ya sea por defecto (ganadería extensiva) o por exceso (ganadería intensiva)-ocasionan perjuicios productivos y ambientales (Weaver y Wong, 2011).…”

Section: Introductionunclassified

“…Según este modelo, la máxima producción de MS de alfalfa se alcanzó con contenidos de P Bray entre 25 y 30 mg P kg -1 (Berardo y Marino, 2000a). Otros autores mencionan umbrales similares para suelos del norte de Buenos Aires, Santa Fe y Entre Ríos (Quintero et al, 1995;Diaz Zorita y Gambaudo, 2007;Rubio, Micucci y García, 2013), pero no se indica si los modelos ajustados cumplen con los supuestos estadísticos mencionados. Según estos autores los niveles de P Bray requeridos por pasturas de alfalfa para maximizar el rendimiento de forraje serían superiores a los de los cultivos de maíz y de trigo, lo que no coincide con trabajos realizados previamente en otros países (Fixen y Grove, 1990).…”

Section: Introductionunclassified

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Diagnóstico de requerimiento de fósforo para alfalfa (Medicago sativa L.) en argiudoles

Marino¹,

Echeverría²

2018

AgriS

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resumenSe planteó determinar el nivel crítico (NC) de P Bray en suelo y confeccionar guías de fertilización fosfatada para alfalfa en suelos Argiudoles. Se reanalizaron resultados de producción de materia seca (MS) y respuesta a P de cuatro años. Se evaluó la relación entre el rendimiento relativo (RR) de MS y P Bray con modelos logarítmico, cuadrático, lineal-plateau, cuadrático-plateau y arcoseno-logaritmo (ALCC modificado). El ALCC modificado cumplió el supuesto de homogeneidad de varianza y explicó el mayor porcentaje de variación entre el RR y el P Bray (R 2 = 0,87). La estimación del NC (18,1 mg kg -1, intervalo de confianza 15,8 y 20,1 mg kg -1 ) coincide con el determinado en otros ambientes. Se calibraron siete categorías de P Bray y se confeccionaron guías para la fertilización y refertilización según el criterio de suficiencia, y de reconstrucción y mantenimiento. Para 5 mg kg -1 de P Bray la dosis de superfosfato según el criterio de suficiencia fue de 118 kg ha -1 , para el criterio de reconstrucción y mantenimiento las dosis variaron de 160 a 248 kg ha -1 con producciones objetivo de 8 a 15 Mg MS ha -1 , respectivamente. Esta información permitirá un uso más racional de los fertilizantes en pasturas de alfalfa.Palabras clave: leguminosa forrajera, nutrición fosfatada, calibración del análisis de suelo, recomendación de fertilización.Marino, M. A. and Echeverría, H. E., 2018. Diagnosis of phosphorus requirement for alfalfa (Medicago sativa L.) in argiudols. Agriscientia 35: 11-24 summary The aim of this work was to determine the soil Bray P critical level (CL) and to develop phosphate fertilization guidelines for alfalfa in Argiudolls soils. Results from four years' dry matter production (DM) and P response were re-analyzed. The relationship between DM relative yield (RY) and Bray P was evaluated with logarithmic, quadratic, linear-plateau, quadratic-plateau and arcsine-logarithm models (modified ALCC). The modified ALCC model fulfilled the assumption of homogeneity of variance and explained the greater percentage of variation between RY and P Bray (R 2 = 0.87). The CL (18.1 mg kg -1 , confidence interval between 15.8 and 20.1 mg kg -1

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Effects of soil flooding on P transformations in soils of the Mesopotamia region, Argentina

Quintero

Boem

Romina

et al. 2007

Z. Pflanzenernähr. Bodenk.

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In the Mesopotamia region (Argentina), rice is cropped on a wide range of soil types, and the response of rice to fertilizer application has been inconsistent even in soils with very low levels of available phosphorus. Phosphorus transformations in flooded soils depend on soil characteristics that may affect phosphorus availability. This study was conducted to determine which soil characteristics were related to the changes in P fractions during soil flooding. Soils were chosen from ten sites within the Mesopotamia region that are included in five different soil orders: Oxisols, Ultisols, Alfisols, Mollisols, and Vertisols. Soil phosphorus (P) was fractionated by a modified Hedley method before and after a 45 d anaerobic‐incubation period. Changes in the inorganic P extracted with resin depended on soil pH and were related to the exchangeable‐Fe concentration of soils (extracted with EDTA). Inorganic P extracted with alkaline extractants (NaHCO3 and NaOH) increased due to soil flooding. This increase was related to the organic‐C (OC) percentage of soils (r2 = 0.62, p < 0.01), and ranged from 13 to 55 mg kg–1. Even though previous studies showed that P associated with poorly crystalline Fe played an important role in the P nutrition of flooded rice, in this study, there was no relationship between ammonium oxalate–extractable Fe and P changes in soils due to flooding. Our results suggest that in the Mesopotamia region, changes in P fractions due to soil flooding are related to soil OC, soil pH, and soluble and weakly adsorbed Fe.

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Phosphorus retention in some soils of the Argentinean Mesopotamia

Cited by 23 publications

References 17 publications

Relation between various soil phosphorus extraction methods and sorption parameters in calcareous soils with different texture

Relation between various soil phosphorus extraction methods and sorption parameters in calcareous soils with different texture

Diagnóstico de requerimiento de fósforo para alfalfa (Medicago sativa L.) en argiudoles

Effects of soil flooding on P transformations in soils of the Mesopotamia region, Argentina

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