Changes in phosphorus turnover when soils under long-term P management are amended with bio-based fertiliser

Khomenko, Olha; Fenton, Owen; Leahy, James J.; Daly, Karen

doi:10.1016/j.geoderma.2022.116288

Cited by 5 publications

(5 citation statements)

References 45 publications

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“…This could be due to a lower P solubility in the recycled fertilisers ( Vanden et al, 2021 ) with a larger fraction of P added with the recycled products being transferred to a labile P pool. While the availability is limited immediately after application a fraction of the labile P from the recycled fertilisers becomes available for crops over the growing season Khomenko et al (submitted) . The potential of the recycled fertilisers to release available P into the available P pool and their impact on P dynamics are discussed in section 4.3 .…”

Section: Discussionmentioning

confidence: 99%

“…As new wastes emerge within the bioeconomy there has been an over reliance on assuming all wastes offer the same potential based on nutrient profiles. Recent studies on DPS have shown that nutrient and metal profiles can be somewhat misleading when it comes to actual agronomic performance Khomenko et al (submitted) Ashekuzzaman et al, 2021a , Ashekuzzaman et al, 2021b ; Shi et al, 2022 ), and these differences need to be reflected in the updated legislation.…”

Section: Discussionmentioning

confidence: 99%

“…Such products, may require higher application rates to meet crop demand, compared to immediately soluble mineral fertilisers. Khomenko et al (submitted) reported that recycled dairy waste contained P in labile form that can be released over time, and application times need to be adjusted to account for the slower P release. .…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study Khomenko et al (submitted) a combination of extractive soil tests (Morgan's P and Mehlich3 P) and isotope pool dilution techniques were used to access the P availability and build-up dynamics in soils under long-term P management. These methods allow quantification of both orthophosphate ions in soil solution (available P), which reflects the amount of immediately available P, and the rapidly exchangeable orthophosphate ions (exchangeable P) which can replenish the solution P as it is being removed from the system by plants.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A comparative study of thermally and chemically treated dairy waste: Impacts on soil phosphorus turnover and availability using 33P isotope dilution

Khomenko

Fenton

Leahy

et al. 2023

Journal of Environmental Management

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A comparative study of thermally and chemically treated dairy waste: Impacts on soil phosphorus turnover and availability using 33P isotope dilution

Khomenko

Fenton

Leahy

et al. 2023

Journal of Environmental Management

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“…The amount of phosphorus in soils varies from 0.02% to 0.15%, and a major part of total soil phosphorus is not available for plants [18]. Therefore, soil phosphorus is replenished with mineral or bio-based fertilizers [19]. Potassium is a crucial nutrient regarding physiological and biochemical functions in plants [20].…”

Section: Introductionmentioning

confidence: 99%

Carbon and Nitrogen Stocks in Agricultural Soils under Different Natural Conditions and Management in Slovakia

Kizeková,

Kanianska,

Jančová

et al. 2024

Land

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Soil is a natural capital which supplies valuable ecosystem services including carbon and nitrogen storage. Agroecosystems play an important role in soil organic carbon (SOC) and soil total nitrogen (NT) accumulation. The aim of this study was to analyse SOC stock (SOCS) and NT stock (NTS) in relation to land use (arable land-AL, permanent grasslands-PG), management, soil depth, and selected soil properties of six soil subtypes (Rendzic Leptosol—LPrz, Dystric Cambisol—CMdy, Stagnic Cambisol—CMst, Haplic Fluvisol—FLha, Gleyic Fluvisol—FLgl, Haplic Chernozem—CHha) which are the most widespread in Slovakia. SOCS for a 50 cm deep soil profile ranged from 161 t.ha−1 in CHha to 59 t.ha−1 in FLgl in grasslands, and in arable lands from 111 t.ha−1 in CHha to 38 t.ha−1 in CMst. In grasslands, FLs and CMst showed the significantly lowest SOCS and NTS in comparison to CMdy, LPrz, and CHha. The mean soil NT content in arable land and grasslands was 2.21 g.kg−1 and 2.82 g.kg−1, respectively. ANOVA showed that soil subtype, land use, and site have significantly affected SOCS but not NTS. The correlation analysis revealed correlations between SOCS and NTS. SOCS was also correlated with C:N, pH, P, and K. This study should help to encourage practices to maintain soil C and soil properties and to ensure the sustainability of the functions of many soil types in Slovakia.

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Contrasting Phosphorus Build-up and Drawdown Dynamics in Soils Receiving Dairy Processing Sludge and Mineral Fertilisers

Khomenko,

Fenton,

Leahy

et al. 2024

J Soil Sci Plant Nutr

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Sustainable utilisation of waste from the food industry is required to transition to a circular economy. The dairy industry relies on high phosphorus (P) inputs and produces large quantities of P-rich dairy processing sludge (DPS). Recycling DPS into P fertilisers provides an opportunity to decrease the reliance on chemical P fertilisers. However, current soil nutrient management planning (NMP) is based on chemical P and does not account for recycled alternatives. A pot trial using a novel isotope pool dilution technique was used to describe build-up and drawdown cycles of P in soils fertilised with DPS. Changes in available, exchangeable, and Mehlich3 P (M3-P) pools were recorded over 36 weeks of grass growth. Results demonstrated that in the period of high P demand (12 weeks), these P pools were depleted. As crop growth and demand decreased, available P recovered through mobilisation of P from exchangeable P and M3-P reserves. DPS allowed available P to recover and build up to agronomic target levels after 24 weeks. Using DPS, build-up of available and exchangeable P was slower but P use efficiency was higher at stages of slow growth. Dairy waste created a more stable P pool which could be utilised by crops over a growing season indicating that NMP needs to account for this in the decision support for growers. Isotope studies revealed that extractive agronomic tests do not capture drawdown in P reserves.

show abstract

Changes in phosphorus turnover when soils under long-term P management are amended with bio-based fertiliser

Cited by 5 publications

References 45 publications

A comparative study of thermally and chemically treated dairy waste: Impacts on soil phosphorus turnover and availability using 33P isotope dilution

A comparative study of thermally and chemically treated dairy waste: Impacts on soil phosphorus turnover and availability using 33P isotope dilution

Carbon and Nitrogen Stocks in Agricultural Soils under Different Natural Conditions and Management in Slovakia

Contrasting Phosphorus Build-up and Drawdown Dynamics in Soils Receiving Dairy Processing Sludge and Mineral Fertilisers

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