Effect of pH and some organic anions on the solubility of soil phosphate: implications for P bioavailability

Staunton, Siobhán; Leprince, Franck

doi:10.1111/j.1365-2389.1996.tb01394.x

Cited by 128 publications

(56 citation statements)

References 34 publications

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“…Generally, crop plants have various strategies to influence either the spatial or the chemical availability of P in soil. Some plants adapt to low-P soil by changing their root morphology to explore a large soil volume, other excrete P-solubilizing compounds like organic acids, organic and inorganic ions, sugars, vitamins, nucleosides, and enzymes (Staunton and Leprince 1996;Dakora and Phillips 2002;Nurruzzaman et al 2006).…”

Section: Resultsmentioning

confidence: 99%

Biomass ashes and their phosphorus fertilizing effect on different crops

Schiemenz

Eichler‐Löbermann

2010

Nutr Cycl Agroecosyst

116

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The reutilization of biomass ashes in agriculture is an important issue to create nutrient cycles and to save fertilizer. To analyse the P fertilization effect of crop biomass ashes (rape meal ash (RMA), straw ash (SA), and cereal ash (CA)) in interaction with different crops, two pot experiments with a poor loamy sand deficient in P were carried out. Besides the three ash treatments, other treatments included triple superphosphate (TSP) as a high soluble P source, potassium chloride (KCl) as a high soluble K source, and a control (CON) without P and K. The main crops (maize, lupin, summer barley, and oilseed rape) were cultivated in the first experiment from April to May and the catch crops (oil radish, phacelia, italian ryegrass, and buckwheat) were cultivated in the second experiment from August to September. Plant parameters (biomass and P uptake of shoots), soil pH, different P pools of the soil (total P (Pt), water soluble P (Pw), double lactate soluble P (Pdl), oxalate soluble P (Pox)), P sorption capacity (PSC), and the degree of P saturation (DPS) were investigated. The fertilization effect of biomass ashes was comparable with that of TSP. On average of all crops, the highest P uptake (86.7 mg pot -1 ) was found after RMA application, and the lowest P uptake (66.6 mg pot -1 ) for CON. The readily bio-available soil P contents (Pw and Pdl) were significantly increased when P was supplied, regardless of whether P was given with ash or with high soluble TSP. The P fertilization effects also depended on the cultivated crops. The ash treatments resulted in highest increases of soil Pw values when combined with buckwheat cultivation. After buckwheat harvest the Pw content in the control was 8.0 mg kg -1 , and in the ash treatments between 13.9 mg kg -1 (CA) and 15.7 mg kg -1 (RMA). From the results of this study we conclude, that crop biomass ashes can be an adequate P source comparable to that of highly soluble commercial P fertilizer.

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Section: Resultsmentioning

confidence: 99%

Biomass ashes and their phosphorus fertilizing effect on different crops

Schiemenz

Eichler‐Löbermann

2010

Nutr Cycl Agroecosyst

116

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“…To increase plant-available P, we added Na 2 HPO 4 and oxalic acid. Oxalic acid is an organic acid produced by plant roots, mycorrhizae, and other organisms , and P, keeping these elements available to local biota (Staunton & LePrince 1996). To decrease plant-available P, we used CaO to increase soil ANP and thus the capacity of biogenic acids to solubilize P. , Thompson & Troeh 1978, Haynes 1980.…”

Section: Methodsmentioning

confidence: 99%

“…Zeolite was also added to reduce plant-available K + , as it can preferentially bind this nutrient, and was shown to be effective in a previous study (Belnap et al 200xxsherrod germ , likely attributable to the ability of oxalic acid to solubilize soil nutrients and/or to compete for soil exchange sites (Staunton & LePrince 1996). This argues strongly for a luxury uptake phenomenon on the part of Bromus, even when detrimental to the plant (e.g., Na + in the Na 2 HPO 4 and zeolite treatments), and is likely facilitated by Bromus' high root CEC.…”

Section: Treatment Effectsmentioning

confidence: 99%

Exotic Annual Grasses in Western Rangelands: Predicting Resistance and Resilience of Native Ecosystems to Invasion (Draft)

Belnap¹,

Evans²,

Phillips³

et al. 2004

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. REPORT DATE APR 20042. REPORT TYPE CS 11445e. TASK NUMBER 5f. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) USGS/Canyonlands Field Station 2290 South West Resource Boulevard Moab, UT 845328. PERFORMING ORGANIZATION REPORT NUMBER SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)Strategic SERDP SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release, distribution unlimited SUPPLEMENTARY NOTESThe original document contains color images. ABSTRACTBromus tectorum (hereafter referred to as Bromus) is a non-native annual grass from the Mediterranean region that arrived in the United States in the late 19th century and soon spread throughout the western states. Bromus now dominates millions of hectares of low and midelevation landscapes. Where this occurs, native plant and animal diversity is reduced and sometimes extirpated, fire frequencies are increased, community productivity is decreased, and soil biota and nutrient cycles are altered. This has led to a many research efforts to understand the impact of Bromus on native ecosystems and to identify ways to prevent invasion and/or to restore invaded landscapes. We would also like to gratefully acknowledge the SERDP program that provided the funding for this prodigious effort and the ever-cheerful SERDP staff, including Brenda Batch, Matie Desjardin, Jeffrey Marqusee, Veronica Rice, and Brad Smith. We would especially like to thank Bob Holst, who was always immensely helpful and supportive, and Susan Walsh who saved us from innumerable web-based calamities. 1 Executive SummaryBromus tectorum (hereafter referred to as Bromus) is a non-native annual grass from the Mediterranean region that arrived in the United States in the late 19 th century and soon spread throughout the western states. Bromus now dominates millions of hectares of low and midelevation landscapes. Where this occurs, native plant and animal diversity is reduced and sometimes extirpated, fire frequencies are increased, community productivity is decreased, and soil biota and nutrient cycles are altered. This has led to a many research efforts to understand the impact of Bromus on native ecosystems and to identify ways to prevent inva...

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“…The direct effects generally result in immediate P release. They refer to the blocking of P adsorption sites (ligand exchange), oxide dissolution by complexing Al or Fe held in minerals or mobilization of P held in metal-humic substances (Staunton & Leprince 1996).…”

Section: Introductionmentioning

confidence: 99%

The Role of Cotric Acid as a Phosphorus Mobilization Mechanism in Highly P-Fixing Soils

Drouillon

Merckx

2003

Gayana Bot.

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Exudation of low molecular weight carboxylates is an important phosphorus (P) acquisition strategy for plants in strongly P-fixing soils. The effect of citrate exudation on P availability was studied in five acid soils with a large organic matter content and a low available P pool. The amount of molybdate reactive P extracted by citric acid 10 mM (0.1-2 mg kg -1 ) was larger than the molybdate reactive P (MRP) extracted by CaCl 2 10 -3 M (0.007-0.07 mg kg -1 ). Both extractants were adjusted to soil pH prior to extraction. Also, the total P content of citric acid extracts (2-44 mg kg -1 ) far exceeded the total P content of CaCl 2 (0.2-1.5 mg kg -1 ). However, ratios of MRP to total dissolved P (TDP) remained constant. When citric acid was added to the CaCl 2 -extracts (the pH of citric acid being adjusted to the pH of CaCl 2 , and thus eliminating release of P through acidification) a significant pH increase was noted. Simultaneously, MRP increased significantly in all but one soil. This suggests that the P availability enhancing properties of citric acid are not only due to acidification of the plant rhizosphere, but also to its Al and Fe complexing capacity.KEYWORDS: Andosols, citric acid, phosphorus availability. RESUMENLa exudación de ácidos orgánicos con bajo peso molecular, como el ácido cítrico, es una importante estrategia de adquisición de fósforo (P) para las plantas en suelos que fijan fuertemente el P. El objetivo de la presente investigación fue evaluar el efecto de la exudación de ácido cítrico sobre la disponibilidad de P. Dicho efecto fue estudiado en 5 suelos ácidos con un elevado contenido de materia orgánica y una baja disponibilidad de P. La cantidad de fosfato determinado con molibdato de amonio (MRP), extraído con ácido cítrico 10 mM (0,1-2 mg kg -1 ) fue mayor que la cantidad de MRP extraido con CaCl 2 10 -3 M (0,007-0,07 mg kg -1 ). Ambos extractantes fueron ajustados al pH del suelo antes de realizar la extracción. El contenido de P total extraído con ácido cítri-co, superó en mucho el contenido de P total extraído con CaCl 2 . Sin embargo, el ratio MRP:P total disuelto permaneció constante. Así mismo cuando el ácido cítrico fue añadido al CaCl 2 -el pH del ácido cítrico fué ajustado al pH del CaCl 2 , eliminando así la liberación de P por acidificación-se observó un significante aumento de pH. Simultáneamente, el MRP aumentó en todos los suelos menos en uno. Esto sugiere que las capacidades del áci-do cítrico para aumentar la disponibilidad de P no es sólo debido a la acidificación de la rizosfera de la planta sino también a la capacidad de quelación del Al y Fe.

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Effect of pH and some organic anions on the solubility of soil phosphate: implications for P bioavailability

Cited by 128 publications

References 34 publications

Biomass ashes and their phosphorus fertilizing effect on different crops

Biomass ashes and their phosphorus fertilizing effect on different crops

Exotic Annual Grasses in Western Rangelands: Predicting Resistance and Resilience of Native Ecosystems to Invasion (Draft)

The Role of Cotric Acid as a Phosphorus Mobilization Mechanism in Highly P-Fixing Soils

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