Thresholds of target phosphorus fertility classes in European fertilizer recommendations in relation to critical soil test phosphorus values derived from the analysis of 55 European long-term field experiments

Steinfurth, Kristin; Börjesson, Gunnar; Denoroy, Pascal; Eichler‐Löbermann, Bettina; Gans, Wolfgang; Heyn, Johannes; Hirte, Juliane; Huyghebaert, B.; Jouany, Claire; Dierk, Koch; Merbach, Ines; Mokry, M.; Mollier, Alain; Morel, Christian; Panten, Kerstin; Peiter, Edgar; Poulton, P. R.; Reitz, Thomas; Rubæk, G. H.; Spiegel, Heide; Laak, Michael van; Tucher, Sabine von; Buczko, Uwe

doi:10.1016/j.agee.2022.107926

Cited by 31 publications

(24 citation statements)

References 64 publications

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“…Regarding the soil available phosphorus levels before liming, only somewhat low estimates could be made since no specific information for rye could be found [ 38 ]. Additionally, the soil phosphorus availability according to the extracted Po and P1 levels did not increase as a consequence of liming, so the phosphorus availability could be regarded as still being low after the treatments.…”

Section: Discussionmentioning

confidence: 99%

Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil

Olego

Cuesta-Lasso²,

Visconti

et al. 2022

Plants

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In addition to aluminum and other heavy metal toxicities, acidic soils also feature nutrient deficits that are not easily overcome by merely adding the required amounts of mineral fertilizers. One of the most critically scarce nutrients in acidic soils is phosphorus, which reacts with aluminum and iron to form phosphates that keep soil phosphorus availability significantly low. Liming ameliorates acidic soils by increasing pH and decreasing aluminum contents; however, it also increases the amount of calcium, which can react with phosphorus to form low-solubility phosphates. In the present work, three liming materials, namely, dolomitic limestone, limestone and sugar foam, were applied on a Typic Palexerult cropped with rye. The effects of these materials on soil properties, including soil available phosphorus extracted with the Olsen and Bray-1 methods, rye phosphorus content in stems and stem and spike harvested biomasses were monitored for nine years. According to the Olsen extraction, the amount of soil available phosphorus generally decreased following liming, with limestone presenting the lowest values; however, the amount of soil available phosphorus increased according to the Bray-1 extraction, though only to a significant extent with the sugar foam from the third year onward. Regardless, the phosphorus content in rye and the relative biomass yield in both stems and spikes generally increased as a consequence of liming. Since crop uptake and growth are the ultimate tests of soil nutrient availability, the inconsistent stem phosphorus content results following the Olsen and Bray-1 extraction methods suggest a lowered efficiency of both extractants regarding crops in soils rich in both aluminum and calcium ions. This decrease can lead to important interpretation errors in the specific conditions of these limed acidic soils, so other methods should be applied and/or researched to better mimic the crop roots’ phosphorus extraction ability. Consequently, the effects of the liming of acidic soils on phosphorus availability and crop performance in the short and long term will be better understood.

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Section: Discussionmentioning

confidence: 99%

Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil

Olego

Cuesta-Lasso²,

Visconti

et al. 2022

Plants

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“…Fertiliser recommendations and advice to farmers are primarily based on agronomic requirements, specific to soil and crop type and generated individually within each country. The general common principle is to reach or maintain target ranges of plant available nutrients in soil (phosphorus (P), potassium (K) and magnesium (Mg) specifically; Steinfurth et al, 2022; Mattila & Rajala, 2022; Zbíral, 2016). It has been recognised for many years that there are a number of different soil test methods available.…”

Section: Introductionmentioning

confidence: 99%

Stocktake study of current fertilisation recommendations across Europe and discussion towards a more harmonised approach

Higgins,

Keesstra,

Kadziuliene

et al. 2023

European J Soil Science

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The European Commission has set targets for a reduction in nutrient losses by at least 50% and a reduction in fertiliser use by at least 20% by 2030, while ensuring no deterioration in soil fertility. Within the mandate of the European Joint Programme EJP Soil “Towards climate‐smart sustainable management of agricultural soils”, the objective of this study was to assess current fertilisation practices across Europe and discuss the potential for harmonisation of fertilisation methodologies as a strategy to reduce nutrient loss and overall fertiliser use. A stocktake study of current methods of delivering fertilisation advice took place across 23 European countries. The stocktake was in the form of a questionnaire, comprising 46 questions. Information was gathered on a large range of factors, including soil analysis methods, along with soil, crop and climatic factors taken into consideration within fertilisation calculations. The questionnaire was completed by experts, who are involved in compiling fertilisation recommendations within their country. Substantial differences exist in the content, format and delivery of fertilisation guidelines across Europe. The barriers, constraints and potential benefits of a harmonised approach to fertilisation across Europe are discussed. The general consensus from all participating countries was that harmonisation of fertilisation guidelines should be increased, but it was unclear in what format this could be achieved. Shared learning in the delivery and format of fertilisation guidelines and mechanisms to adhere to environmental legislation were viewed as being beneficial. However, it would be very difficult, if not impossible, to harmonise all soil test data and fertilisation methodologies at EU‐level due to diverse soil types and agro‐ecosystem influences. Nevertheless, increased future collaboration especially between neighbouring countries within the same environmental zone was seen as potentially very beneficial. This study is unique in providing current detail on fertilisation practices across European countries in a side‐by‐side comparison. The gathered data can provide a baseline for the development of scientifically based EU policy targets for nutrient loss and soil fertility evaluation.This article is protected by copyright. All rights reserved.

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“…In the last century, one of the greatest advances in agriculture was the development of soil analysis methods capable of predicting the availability of nutrients for plants (Anderson, 1960). Between the 1950s and 1980s, many soil test correlation and calibration studies were conducted in the United States, defining the critical soil test value (CSTV) of P for different crops and soil types (Zhang et al., 2021; Steinfurth et al., 2022). The main soil management system at that time was conventional tillage (CT), with intense soil disturbance before each crop, forming a homogeneous volume of soil with a very similar content of soil available P within the plow layer.…”

Section: Introductionmentioning

confidence: 99%

“…different crops and soil types (Zhang et al, 2021;Steinfurth et al, 2022). The main soil management system at that time was conventional tillage (CT), with intense soil disturbance before each crop, forming a homogeneous volume of soil with a very similar content of soil available P within the plow layer.…”

Section: Introductionmentioning

confidence: 99%

Soil sampling depth effect on critical soil test values of phosphorus for conservation agriculture

Tiecher,

Gatiboni,

Osmond

et al. 2023

Crop Forage & Turfgrass Mgmt

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The critical soil test value (CSTV) of phosphorus (P) is the threshold where it is possible to obtain 95–100% of the maximum crop yield. Although the P buildup in the topsoil of conservation tillage may affect this threshold, the effect of soil sampling depth on CSTV value have not been determined for conservation tillage in the southern United States. The objective of this study was to evaluate CSTV of P using different soil layers from two long‐term experiments managed under varying P rates, planted to corn/soybean rotation under minimum tillage (Tidewater) or no‐tillage (Piedmont) in North Carolina. Soil samples were taken from depths of 0–2, 2–4, 4–8, and 8–12 inches. The CSTV for different soil layers was calculated using a quadratic‐plateau model with Mehlich‐3 P and relative yield of soybean and corn (2021‐2022). The CSTV decreased as the soil sampling depth increased. The CSTV of P at the Tidewater site was 128, 111, 86, and 74 lb ac−1, and at the Piedmont site was 28, 20, 16, and 15 lb ac−1 for the 0–2, 0–4, 0–8, and 0‐12‐inches soil layers, respectively. Using multiple sampling layers or using deeper layers did not improve the quality of CSTV measurement. The current sampling depths used in North Carolina are appropriate for minimum tillage (0‐8 inches) and no tillage (0‐5 inches), as similar quality models were obtained using either soil layers in both sites. However, it is important to be cautious when changing the sampling depth, as this affect the CSTV value.This article is protected by copyright. All rights reserved

show abstract

Thresholds of target phosphorus fertility classes in European fertilizer recommendations in relation to critical soil test phosphorus values derived from the analysis of 55 European long-term field experiments

Cited by 31 publications

References 64 publications

Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil

Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil

Stocktake study of current fertilisation recommendations across Europe and discussion towards a more harmonised approach

Soil sampling depth effect on critical soil test values of phosphorus for conservation agriculture

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