Improved Phosphorus Recycling in Organic Farming: Navigating Between Constraints

Möller, Kurt; Oberson, Astrid; Bünemann, Else K.; Cooper, Julia; Friedel, Jürgen K.; Glæsner, Nadia; Hörtenhuber, Stefan; Løes, Anne-Kristin; Mäder, Paul; Meyer, Gregor; Müller, Torsten; Symanczik, Sarah; Weissengruber, Lina; Wollmann, Iris; Magid, Jakob

doi:10.1016/bs.agron.2017.10.004

Cited by 99 publications

(80 citation statements)

References 308 publications

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“…Individual studies on the fertilizer value of struvite have yielded varying results. Many studies reported similar crop response relative to soluble fertilizers (Antonini et al, 2012; Achat et al, 2014; Katanda et al, 2016; Horta, 2017; Möller et al, 2018; Robles‐Aguilar et al, 2018) whereas others reported poorer crop response to struvite (Ackerman et al, 2013; Mehta et al, 2018). Some authors suggested than an integrated approach, combining soluble fertilizers with struvite, may improve overall crop performance by providing both readily available and slow‐release P sources (Ackerman et al, 2013; Talboys et al, 2016).…”

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

“…Struvite is generally considered a slow‐release fertilizer due to its low solubility in water and relatively slow dissolution in soil (Bridger et al, 1962; Cabeza et al, 2011; Achat et al, 2014; Talboys et al, 2016). The value of struvite as a crop fertilizer has been investigated in many recent studies (Gell et al, 2011; Katanda et al, 2016; Degryse et al, 2017; Katanda et al, 2019) and summarized in several thorough reviews (Liu et al, 2013; Rahman et al, 2014; Kataki et al, 2016; Ahmed et al, 2018; Möller et al, 2018; Peng et al, 2018) and one meta‐analysis (Huygens and Saveyn, 2018). …”

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

“…P uptake, biological N fixation, and growth. Möller et al (2018), following an extensive review, recommended struvite as a promising recycled P fertilizer for organic cropping systems due to its relatively high P and low concentrations of potentially toxic elements, as well as high P‐supplying ability under varying soil pH levels, compared with rock phosphates.…”

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

“…Most commercial fertilizer application equipment is designed to handle granular rather than powdered fertilizers; thus, crop response to struvite fertilizers from studies using powdered forms must be interpreted with care, and further studies should include granular formulations. Many authors have recommended further research on struvite use in differing soils to clarify the effect of soil properties on its agronomic effectiveness (Cabeza et al, 2011; Ackerman et al, 2013; Katanda et al, 2016; Degryse et al, 2017; Möller et al, 2018). Approaches to enhance dissolution and crop uptake of struvite P in alkaline soils are of particular interest (Achat et al, 2014; Hilt et al, 2016).…”

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

“…Finally, we examine the link between PUE and the emerging movement toward a circular economy, as P recovery from human and animal waste streams is viewed as essential for achieving greater PUE (Withers et al, 2015). Phosphorus recycling and recovery at the regional scale are discussed generally, but we have focused in particular on struvite (magnesium ammonium phosphate hexahydrate, NH 4 MgPO 4 ·6H 2 O) because its use as a recycled P fertilizer to help balance regional and global P cycles is gaining momentum in a variety of agricultural settings and production systems, as it avoids some of the issues that biosolids and municipal solid waste compost carry in terms of contaminants and/or low P composition (Egle et al, 2016; Huygens and Saveyn, 2018; Möller et al, 2018; Peng et al, 2018) and it is not constrained by the logistics of longer distance transport associated with manure (Withers et al, 2015). We acknowledge that the majority of literature found and cited in this review is from temperate agricultural systems, and while the concepts behind PUE are expected to be similar in tropical agriculture, the details of the actions to address PUE may differ.…”

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Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

et al. 2019

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Soil phosphorus (P) cycling in agroecosystems is highly complex, with many chemical, physical, and biological processes affecting the availability of P to plants. Traditionally, P fertilizer recommendations have been made using an insurance‐based approach, which has resulted in the accumulation of P in many intensively managed agricultural soils worldwide and contributed to the widespread water quality issue of eutrophication. To mitigate further environmental degradation and because future P fertilizer supplies are threatened due to finite phosphate rock resources and associated geopolitical and quality issues, there is an immediate need to increase P use efficiency (PUE) in agroecosystems. Through cultivar selection and improved cropping system design, contemporary research suggests that sufficient crop yields could be maintained at reduced soil test P (STP) concentrations. In addition, more efficient P cycling at the field scale can be achieved through agroecosystem management that increases soil organic matter and organic P mineralization and optimizes arbuscular mycorrhizal fungi (AMF) symbioses. This review paper provides a perspective on how agriculture has the potential to utilize plant and microbial traits to improve PUE at the field scale and accordingly, maintain crop yields at lower STP concentrations. It also links with the need to tighten the P cycle at the regional scale, including a discussion of P recovery and recycling technologies, with a particular focus on the use of struvite as a recycled P fertilizer. Guidance on directions for future research is provided. Core Ideas There is an urgent need to increase P use efficiency in agroecosystems. Crop yields could be maintained at lower than recommended soil test P concentrations. Both the quantity and quality of organic matter influence P availability. Further research on ability of organic P to supply P to crops is needed. Struvite has the potential to fill an important niche in P recycling.

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Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

Section: Recycling and Recovering Phosphorus From Waste Streams Back mentioning

confidence: 99%

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confidence: 99%

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Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

et al. 2019

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Short‐term biochar effects on greenhouse gas emissions and phosphorus availability for maize

Zenero¹,

Novais²,

Balboni³

et al. 2021

Agrosystems Geosci & Env

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Due to environmental issues, many methods of exploiting renewable natural resources are alternatives to reduce the dependence on non‐renewable agricultural inputs. Phosphate fertilization on weathered tropical soil and waste reuse, for example, requires better management strategies. Thus, biochar from organic residues can be a strategy to reduce pressure on natural resources, in addition to having the potential to mitigate climate change. This study aimed to evaluate the availability of P in tropical soils from the interaction of biochar and arbuscular mycorrhizal fungi (AMF) in the aboveground and root systems of the plant and its impact on greenhouse gas (GHG) emissions. The results indicated that the addition of biochar was an alternative for C sequestration and GHG mitigation, causing no damage to the plant. The applied biochar amount had, for the most part, emission equal to or less than the control treatment (soil only). The sugarcane straw biochar (BCS) showed higher emissions, mainly in the presence of P and AMF. Biologically speaking, there was no significant effect in the presence of mycorrhizae. However, with regard to plant production, treatments where mycorrhizae were inoculated, longer and wider leaves were found. In the production of maize (Zea mays L.) plant material (aboveground and root), the upper and lower values were related to the poultry manure biochar (BPM) , and the presence of P, the values were lower, indicating that, for the good development of the plant, only the presence of the biochar is sufficient, without requiring the addition of phosphate fertilizer.

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Response of organic grain and forage crops to struvite application in an alkaline soil

et al. 2021

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Struvite (NH 4 MgPO 4 •6H 2 O) may be an appropriate fertilizer to address phosphorus (P) deficiencies in organic cropping systems, but field studies assessing crop response to struvite are lacking. Field experiments were conducted over 3 yr on a low-P, alkaline soil in Manitoba to assess the effect of struvite application rate on the yield and P accumulation of organically managed grain and forage crops. Struvite was applied to spring wheat (Triticum aestivum L.) and flax (Linum usitatissimum L.) at 0, 20, 30, and 40 kg P ha -1 in separate experiments each year and to alfalfa (Medicago sativa L.)-grass forage at 0, 30, 60, and 90 kg P ha -1 in a single application in a 3-yr experiment. Wheat grain yield, P concentration, and P accumulation increased linearly with increasing struvite rate, whereas flax showed little to no response. Forage yield, P concentration, and P accumulation also increased with struvite rate. Benefits to forage yield and P accumulation were greatest in the second year, demonstrating important residual effects of struvite application. Struvite application shifted forage composition to become dominated by alfalfa whereas the unfertilized treatment was dominated by grasses. Annual P recovery efficiency was 4-7% for wheat, 1-2% for flax, and 7-12% for forage and did not vary significantly with struvite application rate. Our findings demonstrate that struvite applied at a relatively high rate is an effective P source for wheat and alfalfa-based forage under organic management, but not for flax.

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Improved Phosphorus Recycling in Organic Farming: Navigating Between Constraints

Cited by 99 publications

References 308 publications

Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

Short‐term biochar effects on greenhouse gas emissions and phosphorus availability for maize

Response of organic grain and forage crops to struvite application in an alkaline soil

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