Correlation Between Soil P and Wheat Shoot P Contents in a Network of Hungarian Long‐Term Field Trials

Csathó, Péter; Magyar, Marianna; Debreczeni, Katalin; Sárdi, Katalin

doi:10.1081/css-200043081

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…The extracted P (mean value of all 50 soils) increased in the order H 2 O < CaCl 2 < LiCl < Fe-oxide P i < Olsen < CAL < CAEM < Mehlich 3 < Bray II < dithionite < organic P < HCl < oxalate < total P (Figure 1). This sequence is in accordance with findings by other authors (Fernandes et al 1999, Csathó et al 2005, Kulhánek et al 2009) and reflects different extraction mechanisms and P pools.…”

Section: Resultssupporting

confidence: 79%

A comparison of 14 soil phosphorus extraction methods applied to 50 agricultural soils from Central Europe

Wuenscher

Unterfrauner²,

Peticzka

et al. 2015

Plant Soil Environ.

164

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Phosphorus (P) is a central element to life on Earth. Living organisms are dependent on a persistent supply of P as it is crucially involved in most major metabolic processes, e.g. in energy transfer as adenosine triphosphate (ATP). Likewise, plants rely on P to secure energy production in photosynthesis (Smil 2000, Ruttenberg 2009). Therefore, the fundamental significance of P in agriculture and food production is beyond question.In nature, we can identify several P pools (Smil 2000, Ruttenberg 2009). The largest P reservoir in the lithosphere occurs in marine and freshwater sediments (about 800-4000 × 10 6 Mt P). The entire phytomass (terrestrial and marine; about 570-625 Mt P) amounts to over 90% of P stored in the totality of all living organisms. Gaseous compounds of P are not stable; therefore, only an insignificant amount (0.028 Mt P) exists in the atmosphere as dust and sea spray picked up by wind erosion. The flows of P between these reservoirs are slow (one cycle may take more than 1 million years), which is caused by the low solubility of phosphate in water and the lack of an airborne reservoir.In soils, P derives mainly from weathering of the primary mineral apatite (Schlesinger 1997). The average total P in soils ranges from 200 mg/kg (in older/highly weathered soils) to 800 mg/kg (in younger/less developed soils) (Cross and ABSTRACTPhosphorus (P) fertilization is commonly based on soil testing, for which a variety of different soil P extraction methods are in use. The aim of this study was to compare 14 soil P extraction methods in terms of their extraction yield and their relation to soil properties. Fifty contrasting agricultural topsoils were sampled from Austria and Germany. The soils were extracted with the following methods/extractants: H 2 O, CaCl 2 , LiCl, Olsen, Bray and Kurtz II (Bray II), Mehlich 3, calcium-acetate-lactate (CAL), iron oxide impregnated filter papers (Fe-oxide P i ), cation and anion exchange membranes (CAEM), acid ammonium oxalate, citrate-bicarbonate-dithionite, HCl, organic P and total P. The extracted P varied over three orders of magnitude and increased in the order H 2 O < CaCl 2 < LiCl < Fe-oxide P i < Olsen < CAL < CAEM < Mehlich 3 < Bray II < dithionite < organic P < HCl < oxalate < total P. This sequence is in accordance with previous studies and reflects different extraction mechanisms and P pools. The different extraction methods were generally well correlated, especially when P extraction was achieved by a similar mechanism. The soil properties most influential on P extractability were pH, carbonate content, texture as well as iron oxide content and crystallinity. Our results show that the different extraction methods extract distinct pools of soil P with strongly varying extractability, and that the extractability of a given pool may be influenced by different soil properties to different extents. If and how these relationships translate to plant P uptake requires further examination.

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Section: Resultssupporting

confidence: 79%

A comparison of 14 soil phosphorus extraction methods applied to 50 agricultural soils from Central Europe

Wuenscher

Unterfrauner²,

Peticzka

et al. 2015

Plant Soil Environ.

164

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“…Most authors who found good or intermediate relationships between Olsen P and plant P uptake or relative yield, carried out their experiments on a particular class of soil or on a limited number of different soils (Ahmad et al 2006;Csatho et al 2005Csatho et al , 2002Moody et al 1997;Saggar et al 1999;Sardi et al 2009;Ziadi et al 2001). It has often been noted that the relationship between Olsen P and relative yield or plant P uptake, is heavily influenced by soil type and soil pH (Delgado and Torrent 1997;Smethurst 2000).…”

Section: Use Of Dgt For the Prediction Of Plant-available Cu And Znmentioning

confidence: 97%

“…On US alkaline soils, Olsen-P is frequently used but in various parts of the country, acidic extractants such as Mehlich-1, Mehlich-3 or Bray-1 are mostly used (Bundy et al 2005). While some authors have found good relationships between bicarbonate-extracted P concentrations and the plant availability of P, their experiments were carried out on a particular class of soil or on a limited number of different soils (Ahmad et al 2006;Csatho et al 2005Csatho et al , 2002Moody et al 1997;Saggar et al 1999;Sardi et al 2009;Ziadi et al 2001). Only Mcbeath et al (2007) found a good relationship over a large number of different soils, however they only used a single rate of fertiliser and assessed P availability by dry matter response, therefore it was not possible to determine if maximum yields had been reached.…”

Section: Introductionmentioning

confidence: 99%

The use of DGT for prediction of plant available copper, zinc and phosphorus in agricultural soils

et al. 2011

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Soil chemical extractions are widely used to predict the nutritional status of soils. However, the correlation between extracted elements and plant uptake is often poor, especially if compared over a range of soil types. The aim of this study was to examine a new method called Diffusive Gradients in Thin films (DGT), which measures the diffusive supply of elements, thereby mimicking a plant root. The ability of DGT to assess plant-available P, Zn and Cu was tested in a wide range of typical Scandinavian agricultural soils along with conventional methods (EDTA and DTPA for Cu and Zn; NaHCO 3 for P and soil solution concentrations). Extracted soil concentrations were compared to that of the element in the youngest fully developed leaf of barley (Hordeum vulgare L.) grown in pots. For Zn and P, only DGT could predict plant uptake while conventional extraction methods and soil solution analyses performed poorly. All soil tests could predict Cu concentration in leaves, but the DGT technique proved to be most accurate followed by the soil solution concentration of Cu. We conclude that DGT is much more accurate at predicting plant-available P, Zn and Cu than commonly used methods for analysing plantavailable nutrients in soil.

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“…This is also important in cereal production. Correlation between available soil P in different extracts and P concentration of wheat shoots at the stage of tillering was evaluated for the network of National Long-Term Fertilization Field Trials (NLFT) in Hungary (Csathó et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Correlation between Soil P Test Results and P Contents of Young Spring Barley Studied in Long‐Term Experiments

Sárdi

Osztoics

Csathó

et al. 2009

Communications in Soil Science and Plant Analysis

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Interpretation of soil test results and plant analysis data are important for the further development of nutrient management in cereal production. The main objective of our pot experiments was to study the effects of increasing rates of phosphorus (P) fertilization (including agronomic and extreme P levels) and responses of young spring barley (Hordeum vulgare L.) grown in two soil types: a sandy loam (FAO taxonomy: Eutric cambisol, USA taxonomy: Orthic Eutrochrept) and a silt loam (FAO taxonomy: Stagnic luvisol, USA taxonomy: Typic Albaqualf). Ten-year intensive fertilization resulted in three P levels (referred as P0, P1, and P2). Soil samples were taken from selected plots 30 years after stopping fertilization. Available soil P was determined in the ammonium lactate (AL P) and sodium bicarbonate (Olsen P) extract. Relationships between soil P tests, dry-matter (DM) production, and P contents of young barley plants were evaluated. Significant correlations were found between soil P test values and both DM production and shoot P contents (R 2 values ranged between 0.5047*** and 0.9751***). Correlations were closest between AL P and Olsen P values in both soils (R 2 5 0.9748 and 0.9739, respectively).

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Correlation Between Soil P and Wheat Shoot P Contents in a Network of Hungarian Long‐Term Field Trials

Cited by 13 publications

References 15 publications

A comparison of 14 soil phosphorus extraction methods applied to 50 agricultural soils from Central Europe

A comparison of 14 soil phosphorus extraction methods applied to 50 agricultural soils from Central Europe

The use of DGT for prediction of plant available copper, zinc and phosphorus in agricultural soils

Correlation between Soil P Test Results and P Contents of Young Spring Barley Studied in Long‐Term Experiments

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