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Engineered nanoparticles (ENPs) present in consumer products are being released into the agricultural systems. There is little information about the direct effect of ENPs on phosphorus (P) availability, which is an essential nutrient for crop growth naturally occurring in agricultural soils. The present study examined the effect of 1, 3, and 5% doses of Cu0 or Ag0 ENPs stabilized with L-ascorbic acid (suspension pH 2–3) on P ad- and desorption in an agricultural Andisol with total organic matter (T-OM) and with partial removal of organic matter (R-OM) by performing batch experiments. Our results showed that the adsorption kinetics data of H2PO4 − on T-OM and R-OM soil samples with and without ENPs were adequately described by the pseudo-second-order (PSO) and Elovich models. The adsorption isotherm data of H2PO4 − from T-OM and R-OM soil samples following ENPs addition were better fitted by the Langmuir model than the Freundlich model. When the Cu0 or Ag0 ENPs doses were increased, the pH value decreased and H2PO4 − adsorption increased on T-OM and R-OM. The H2PO4 − desorption (%) was lower with Cu0 ENPs than Ag0 ENPs. Overall, the incorporation of ENPs into Andisols generated an increase in P retention, which may affect agricultural crop production.
Jonathan Suazo-Hernández; Erwin Klumpp; Nicolás Arancibia-Miranda; Patricia Poblete-Grant; Alejandra Jara; Roland Bol; María De La Luz Mora. Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles. Minerals 2021, 11, 373 .
AMA StyleJonathan Suazo-Hernández, Erwin Klumpp, Nicolás Arancibia-Miranda, Patricia Poblete-Grant, Alejandra Jara, Roland Bol, María De La Luz Mora. Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles. Minerals. 2021; 11 (4):373.
Chicago/Turabian StyleJonathan Suazo-Hernández; Erwin Klumpp; Nicolás Arancibia-Miranda; Patricia Poblete-Grant; Alejandra Jara; Roland Bol; María De La Luz Mora. 2021. "Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles." Minerals 11, no. 4: 373.
Andisols, rich in minerals like allophane, imogolite and iron- (Fe) or aluminum- (Al) oxides have high phosphorus (P) sorption capacity and require annual P additions to ensure plant productivity. It is known that the use of composted poultry manure (PM) increases soil labile P and carbon concentration, although the mechanisms controlling P availability and soil organic carbon (SOC) sequestration are not fully understood. The aim of this study was to investigate the relationship between soil available P and particles size distribution, SOC, and iron and aluminum complexes on Southern Chilean pastures with long-term PM amendment. Soil samples, were collected from 4 pastoral farms where PM had been applied annually at 3 tons ha−1 for 5 and 10 years. We analyzed for elemental concentrations, P forms through a modified P fractionation methodology and aggregation through particle size analyses and scanning electron microscopy. Moreover, we determined oxalate and pyrophosphate extractable Fe and Al. Andisols receiving long-term PM amendment had 22–65% higher SOC contents than unfertilized control likely due to improved aggregation capacity as indicated by greater soil particle size. Moreover, the readily available inorganic P increased by 56 to 286% between control and PM amended soils. Andisols amended with PM also showed lower oxalate extractable Al and Fe and higher pyrophosphate extractable forms. These parameters correlated with SOC, labile P concentrations and particle size distribution. We concluded that increased P availability under pastures growing on Andisol with long-term PM amendment is regulated by three mechanisms related to input of readily available P, release of native soil P and decreased availability of sorption sites.
Patricia Poblete-Grant; Jonathan Marcelo Suazo Hernandez; Leo Condron; Cornelia Rumpel; Rolando Demanet; Sparkle L. Malone; Maria Luz Mora. Soil available P, soil organic carbon and aggregation as affected by long-term poultry manure application to Andisols under pastures in Southern Chile. Geoderma Regional 2020, 21, e00271 .
AMA StylePatricia Poblete-Grant, Jonathan Marcelo Suazo Hernandez, Leo Condron, Cornelia Rumpel, Rolando Demanet, Sparkle L. Malone, Maria Luz Mora. Soil available P, soil organic carbon and aggregation as affected by long-term poultry manure application to Andisols under pastures in Southern Chile. Geoderma Regional. 2020; 21 ():e00271.
Chicago/Turabian StylePatricia Poblete-Grant; Jonathan Marcelo Suazo Hernandez; Leo Condron; Cornelia Rumpel; Rolando Demanet; Sparkle L. Malone; Maria Luz Mora. 2020. "Soil available P, soil organic carbon and aggregation as affected by long-term poultry manure application to Andisols under pastures in Southern Chile." Geoderma Regional 21, no. : e00271.
Edith Alarcón-Poblete; Claudio Inostroza-Blancheteau; Mirtha Latsague; Miren Alberdi; Franklin Magnum De Oliveira Silva; Adriano Nunes-Nesi; Patricia Poblete-Grant; Cristian Meriño-Gergichevich; Marjorie Reyes-Díaz. Gypsum application ameliorates morphological and photochemical damages provoked by Al toxicity in Vaccinium corymbosum L. cultivars. Journal of Berry Research 2019, 9, 665 -685.
AMA StyleEdith Alarcón-Poblete, Claudio Inostroza-Blancheteau, Mirtha Latsague, Miren Alberdi, Franklin Magnum De Oliveira Silva, Adriano Nunes-Nesi, Patricia Poblete-Grant, Cristian Meriño-Gergichevich, Marjorie Reyes-Díaz. Gypsum application ameliorates morphological and photochemical damages provoked by Al toxicity in Vaccinium corymbosum L. cultivars. Journal of Berry Research. 2019; 9 (4):665-685.
Chicago/Turabian StyleEdith Alarcón-Poblete; Claudio Inostroza-Blancheteau; Mirtha Latsague; Miren Alberdi; Franklin Magnum De Oliveira Silva; Adriano Nunes-Nesi; Patricia Poblete-Grant; Cristian Meriño-Gergichevich; Marjorie Reyes-Díaz. 2019. "Gypsum application ameliorates morphological and photochemical damages provoked by Al toxicity in Vaccinium corymbosum L. cultivars." Journal of Berry Research 9, no. 4: 665-685.
To maintain grassland productivity and limit resource depletion, scarce mineral P (phosphorus) fertilizers must be replaced by alternative P sources. The effect of these amendments on plant growth may depend on physicochemical soil parameters, in particular pH. The objective of this study was to investigate the effect of soil pH on biomass production, P use efficiency, and soil P forms after P amendment application (100 mg kg−1 P) using poultry manure compost (PM), rock phosphate (RP), and their combination (PMRP). We performed a growth chamber experiment with ryegrass plants (Lolium perenne) grown on two soil types with contrasting pH under controlled conditions for 7 weeks. Chemical P fractions, biomass production, and P concentrations were measured to calculate plant uptake and P use efficiency. We found a strong synergistic effect on the available soil P, while antagonistic effects were observed for ryegrass production and P uptake. We conclude that although the combination of PM and RP has positive effects in terms of soil P availability, the combined effects of the mixture must be taken into account and further evaluated for different soil types and grassland plants to maximize synergistic effects and to minimize antagonistic ones.
Patricia Poblete-Grant; Philippe Biron; Thierry Bariac; Paula Cartes; Maria Luz Mora; Cornelia Rumpel. Synergistic and Antagonistic Effects of Poultry Manure and Phosphate Rock on Soil P Availability, Ryegrass Production, and P Uptake. Agronomy 2019, 9, 191 .
AMA StylePatricia Poblete-Grant, Philippe Biron, Thierry Bariac, Paula Cartes, Maria Luz Mora, Cornelia Rumpel. Synergistic and Antagonistic Effects of Poultry Manure and Phosphate Rock on Soil P Availability, Ryegrass Production, and P Uptake. Agronomy. 2019; 9 (4):191.
Chicago/Turabian StylePatricia Poblete-Grant; Philippe Biron; Thierry Bariac; Paula Cartes; Maria Luz Mora; Cornelia Rumpel. 2019. "Synergistic and Antagonistic Effects of Poultry Manure and Phosphate Rock on Soil P Availability, Ryegrass Production, and P Uptake." Agronomy 9, no. 4: 191.
The dynamics of phosphorus (P) in the environment is important for regulating nutrient cycles in natural and managed ecosystems and an integral part in assessing biological resilience against environmental change. Organic P (Po) compounds play key roles in biological and ecosystems function in the terrestrial environment being critical to cell function, growth and reproduction. We asked a group of experts to consider the global issues associated with Po in the terrestrial environment, methodological strengths and weaknesses, benefits to be gained from understanding the Po cycle, and to set priorities for Po research. We identified seven key opportunities for Po research including: the need for integrated, quality controlled and functionally based methodologies; assessment of stoichiometry with other elements in organic matter; understanding the dynamics of Po in natural and managed systems; the role of microorganisms in controlling Po cycles; the implications of nanoparticles in the environment and the need for better modelling and communication of the research. Each priority is discussed and a statement of intent for the Po research community is made that highlights there are key contributions to be made toward understanding biogeochemical cycles, dynamics and function of natural ecosystems and the management of agricultural systems.
T. S. George; C. D. Giles; D. Menezes-Blackburn; L. M. Condron; Antonio Gama-Rodrigues; D. Jaisi; F. Lang; Andrew Neal; M. I. Stutter; Danilo Almeida; R. Bol; K. G. Cabugao; L. Celi; James Cotner; G. Feng; Daniel Goll; Moritz Hallama; J. Krueger; Claude Plassard; A. Rosling; Tegan Darch; T. Fraser; R. Giesler; A. E. Richardson; Federica Tamburini; C. A. Shand; D. G. Lumsdon; H. Zhang; Martin Blackwell; C. Wearing; M. M. Mezeli; Å. R. Almås; Y. Audette; I. Bertrand; E. Beyhaut; Gustavo Boitt; N. Bradshaw; C. A. Brearley; Tom Bruulsema; P. Ciais; V. Cozzolino; P. C. Duran; Maria Luz Mora; A. B. De Menezes; R. J. Dodd; K. Dunfield; C. Engl; Joaquim José Frazão; G. Garland; José L. González Jiménez; J. Graca; S. J. Granger; A. F. Harrison; C. Heuck; Enqing Hou; Penny Johnes; Klaus Kaiser; H. A. Kjær; E. Klumpp; A. L. Lamb; K. A. Macintosh; E. B. Mackay; J. McGrath; C. McIntyre; Timothy McLaren; E. Mészáros; A. Missong; M. Mooshammer; C. P. Negrón; L. A. Nelson; Verena Pfahler; Patricia Poblete-Grant; M. Randall; A. Seguel; K. Seth; Andrew Smith; M. M. Smits; J. A. Sobarzo; Marie Spohn; K. Tawaraya; Mark Tibbett; P. Voroney; H. Wallander; L. Wang; Jun Wasaki; Philip Haygarth. Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities. Plant and Soil 2017, 427, 191 -208.
AMA StyleT. S. George, C. D. Giles, D. Menezes-Blackburn, L. M. Condron, Antonio Gama-Rodrigues, D. Jaisi, F. Lang, Andrew Neal, M. I. Stutter, Danilo Almeida, R. Bol, K. G. Cabugao, L. Celi, James Cotner, G. Feng, Daniel Goll, Moritz Hallama, J. Krueger, Claude Plassard, A. Rosling, Tegan Darch, T. Fraser, R. Giesler, A. E. Richardson, Federica Tamburini, C. A. Shand, D. G. Lumsdon, H. Zhang, Martin Blackwell, C. Wearing, M. M. Mezeli, Å. R. Almås, Y. Audette, I. Bertrand, E. Beyhaut, Gustavo Boitt, N. Bradshaw, C. A. Brearley, Tom Bruulsema, P. Ciais, V. Cozzolino, P. C. Duran, Maria Luz Mora, A. B. De Menezes, R. J. Dodd, K. Dunfield, C. Engl, Joaquim José Frazão, G. Garland, José L. González Jiménez, J. Graca, S. J. Granger, A. F. Harrison, C. Heuck, Enqing Hou, Penny Johnes, Klaus Kaiser, H. A. Kjær, E. Klumpp, A. L. Lamb, K. A. Macintosh, E. B. Mackay, J. McGrath, C. McIntyre, Timothy McLaren, E. Mészáros, A. Missong, M. Mooshammer, C. P. Negrón, L. A. Nelson, Verena Pfahler, Patricia Poblete-Grant, M. Randall, A. Seguel, K. Seth, Andrew Smith, M. M. Smits, J. A. Sobarzo, Marie Spohn, K. Tawaraya, Mark Tibbett, P. Voroney, H. Wallander, L. Wang, Jun Wasaki, Philip Haygarth. Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities. Plant and Soil. 2017; 427 (1-2):191-208.
Chicago/Turabian StyleT. S. George; C. D. Giles; D. Menezes-Blackburn; L. M. Condron; Antonio Gama-Rodrigues; D. Jaisi; F. Lang; Andrew Neal; M. I. Stutter; Danilo Almeida; R. Bol; K. G. Cabugao; L. Celi; James Cotner; G. Feng; Daniel Goll; Moritz Hallama; J. Krueger; Claude Plassard; A. Rosling; Tegan Darch; T. Fraser; R. Giesler; A. E. Richardson; Federica Tamburini; C. A. Shand; D. G. Lumsdon; H. Zhang; Martin Blackwell; C. Wearing; M. M. Mezeli; Å. R. Almås; Y. Audette; I. Bertrand; E. Beyhaut; Gustavo Boitt; N. Bradshaw; C. A. Brearley; Tom Bruulsema; P. Ciais; V. Cozzolino; P. C. Duran; Maria Luz Mora; A. B. De Menezes; R. J. Dodd; K. Dunfield; C. Engl; Joaquim José Frazão; G. Garland; José L. González Jiménez; J. Graca; S. J. Granger; A. F. Harrison; C. Heuck; Enqing Hou; Penny Johnes; Klaus Kaiser; H. A. Kjær; E. Klumpp; A. L. Lamb; K. A. Macintosh; E. B. Mackay; J. McGrath; C. McIntyre; Timothy McLaren; E. Mészáros; A. Missong; M. Mooshammer; C. P. Negrón; L. A. Nelson; Verena Pfahler; Patricia Poblete-Grant; M. Randall; A. Seguel; K. Seth; Andrew Smith; M. M. Smits; J. A. Sobarzo; Marie Spohn; K. Tawaraya; Mark Tibbett; P. Voroney; H. Wallander; L. Wang; Jun Wasaki; Philip Haygarth. 2017. "Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities." Plant and Soil 427, no. 1-2: 191-208.
G Velásquez; M Calabi-Floody; Patricia Poblete-Grant; Cornelia Rumpel; R Demanet; L Condron; Maria Luz Mora. Fertilizer effects on phosphorus fractions and organic matter in Andisols. Journal of Soil Science and Plant Nutrition 2016, 1 .
AMA StyleG Velásquez, M Calabi-Floody, Patricia Poblete-Grant, Cornelia Rumpel, R Demanet, L Condron, Maria Luz Mora. Fertilizer effects on phosphorus fractions and organic matter in Andisols. Journal of Soil Science and Plant Nutrition. 2016; (ahead):1.
Chicago/Turabian StyleG Velásquez; M Calabi-Floody; Patricia Poblete-Grant; Cornelia Rumpel; R Demanet; L Condron; Maria Luz Mora. 2016. "Fertilizer effects on phosphorus fractions and organic matter in Andisols." Journal of Soil Science and Plant Nutrition , no. ahead: 1.
Volcanic ash derived soils represent between 50-60% of the total arable land area of southern of Chile, and they are the most important soils for pasture production. In these soils, high phosphorus (P) fixation and, in turn, low P availability and high aluminium (Al) soluble concentrations (at low pH) are the most limiting factors for pasture production. At the same time, the complexes between Al-or iron- (Fe) and organic matter as well as short-range order alumino-silicates (allophane) allow the retention of huge quantities of soil P. The aim of this work was to assess the status of P by both sequential extraction procedure (Hedley) and 31P-NMR analysis as influenced by Al and Fe in volcanic grasslands Andisols (Pemehue, Gorbea, Piedras Negras and Llastuco Soil Series) from Southern Chile. We applied Hedley chemical sequential fractionation to soils in order to examine the potential differences in extractable soil inorganic P (Pi) and organic P (Po) fractions. We also determined total P and Olsen P in these grassland Andisols. Oxalate and pyrophosphate were employed to determine the active and organic matter complexed Al and Fe, respectively. Furthermore, we quantified Al and Fe in extracts of the Hedley P fractions. We found that Al extracted in oxalate was correlated positively with labile Po concentration, specifically with both the NaHCO3-Po(r=0.45, P≤0.01), and the NaOH-Po (r=0.43, P≤0.01) fractions. This observation was reinforced by 31P-NMR analysis that showed higher monoester P and myo-IP6 content in soils with higher amounts of oxalate Al. Hedley sequential fractionation procedure confirmed the role of Al in the NaOH-Po fraction for promoting Po storage, as both fractions were correlated (r=0.33, P≤0.05). In addition, Fe plays a substantial role in recalcitrant P accumulation as we found a high correlation between residual P and oxalate Fe (r=0.55, P≤0.01)
Y Redel; P Cartes; R Demanet; Patricia Poblete-Grant; R Bol; Maria Luz Mora; G Velásquez. Assessment of phosphorus status influenced by Al and Fe compounds in volcanic grassland soils. Journal of Soil Science and Plant Nutrition 2016, 16, 490 -506.
AMA StyleY Redel, P Cartes, R Demanet, Patricia Poblete-Grant, R Bol, Maria Luz Mora, G Velásquez. Assessment of phosphorus status influenced by Al and Fe compounds in volcanic grassland soils. Journal of Soil Science and Plant Nutrition. 2016; 16 (2):490-506.
Chicago/Turabian StyleY Redel; P Cartes; R Demanet; Patricia Poblete-Grant; R Bol; Maria Luz Mora; G Velásquez. 2016. "Assessment of phosphorus status influenced by Al and Fe compounds in volcanic grassland soils." Journal of Soil Science and Plant Nutrition 16, no. 2: 490-506.