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

Martens, Joanne R. Thiessen; Entz, Martin H.; Schneider, Kimberley D.; Zvomuya, Francis; Wilson, Henry F.

doi:10.1002/agj2.20943

Cited by 11 publications

(5 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, effluents containing high concentrations of P and nitrogen (N) have led to eutrophication in receiving waters . Struvite is recognized as a sustainable slow-release fertilizer, − and companies have successfully produced struvite fertilizer via chemical precipitation. These dedicated units require expensive magnesium (Mg) salts and pH additives.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Struvite Precipitation Enhanced by an Amelogenin Peptide for Nutrient Recovery

Hostert

Verma

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Precipitation of struvite (MgNH 4 PO 4 •6H 2 O) from wastewater is a promising method for recycling phosphorous, which results in a slow-release fertilizer and improves wastewater treatment costs. While chemical struvite precipitation is commercialized, electrochemical precipitation can improve the process from an energy and materials standpoint. However, new methods are needed to increase electrochemical recovery at pH values near typical wastewater conditions (6−9). Here, a surface-bound amelogenin peptide was explored in a model electrochemical system to control struvite growth at neutral pH. Molecular dynamics simulations indicated that the peptide enables favorable Mg 2+ conformations, which facilitate struvite crystallization. Chronoamperometric studies conducted with a range of immobilized peptides in synthetic wastewater at pH 7.1 produced precipitates characterized as struvite. Peptides loaded onto a gold mesh at a concentration of 19 μg mL −1 led to a 21% increase in struvite precipitation. Longer crystals formed in the presence of surface-bound peptide compared to when no peptide was present, showing that dendritic crystal growth can be achieved at neutral pH. The peptide does not appear to bind to struvite, maintaining struvite purity. Our findings show the viability of electrochemical struvite precipitation for relevant wastewater pH values and highlights how peptides can modulate crystal growth.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrochemical Struvite Precipitation Enhanced by an Amelogenin Peptide for Nutrient Recovery

Hostert

Verma

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…However, due to the relatively lower N:P ratio in livestock manure relative to crop needs, manure application usually results in accumulation of P in soils and further an environmental concern for water quality. On organic farms where animal manures are less available, and hence more expensive, farmers typically use manure only to satisfy the P deficit, relying on legumes to supply N ( Thiessen Martens et al., 2021 ).…”

Section: The Consequences Of Low Translocation Of Vegetative P To Gra...mentioning

confidence: 99%

“…Additionally, low soil test phosphorus has also been reported on organic farms which lack livestock in Saskatchewan ( Knight et al., 2010 ), and organic dairy farms in Ontario ( Roberts et al., 2008 ). Low available P has been shown to decrease organic grain production in the long-term ( Carkner et al., 2020 ), and limits the productivity of legumes in commercial green manure crops ( Thiessen Martens et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, rock phosphate is mined from a non-renewable resource, counterintuitive to the organic philosophy of closing the nutrient cycle on farm ( Nicksy and Entz, 2021 ). Other promising forms of P using unconventional sources are currently being explored on organic farms such as frass from black soldier fly (BSF; Hermetia illucens ) larvae, anaerobically digested urban food or manure waste, and struvite (NH 4 MgPO 4 ·6H 2 O) which is a mineral extracted from municipal wastewater streams or manure ( Nicksy and Entz, 2021 ; Thiessen Martens et al., 2021 ). However, these options are prohibitively expensive, or not approved for organic use under the current Canadian Standards, for example, Struvite, which is sourced from human waste-water sources ( Canadian General Standards Board, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ideotype breeding for crop adaptation to low phosphorus availability on extensive organic farms

2023

Self Cite

View full text Add to dashboard Cite

Organic farming in extensive production regions, such as the Canadian prairies have a particularly difficult challenge of replenishing soil reserves of phosphorus (P). Organic grains are exported off the farm while resupply of lost P is difficult due to limited availability of animal manures and low solubility of rock organic fertilizers. As a result, many organic farms on the prairies are deficient in plant-available P, leading to productivity breakdown. A portion of the solution may involve crop genetic improvement. A hypothetical ‘catch and release’ wheat ideotype for organic production systems is proposed to (i) enhance P uptake and use efficiency but (ii) translocate less P from the vegetative biomass into the grain. Root traits that would improve P uptake efficiency from less-available P pools under organic production are explored. The need to understand and classify ‘phosphorus use efficiency’ using appropriate indices for organic production is considered, as well as the appropriate efficiency indices for use if genetically selecting for the proposed ideotype. The implications for low seed P and high vegetative P are considered from a crop physiology, environmental, and human nutrition standpoint; considerations that are imperative for future feasibility of the ideotype.

show abstract

“…Excessive phosphorus content can be dangerous for freshwater systems. On the other hand, agricultural production should be provided with phosphorous fertilizers that need it (Asadi et al, 2020;Grant et al, 2004;Martens et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Quantitative assessment of soil condition, basic environmental factors and productivity of Linum usitatissimum in the steppe zone of Kazakhstan using the remote sensing method

Nugmanov,

Tulayev,

Ershov

et al. 2023

Braz. J. Biol.

View full text Add to dashboard Cite

The influence of environmental factors, such as lack of water and uneven rainfall, depletion of nutrients in the soil and reduced soil fertility, planting patterns and plant density, uneven growth stages, are the main limiting factors that hinder the growth of agricultural production in arid regions. The aim of the study was to assess the potential of Sentinel-2 to quantify soil conditions, which can improve the understanding of spatiotemporal dynamics in organic agriculture in the steppe zone of Kazakhstan and improve productivity management of Linum usitatissimum. In the course of the research, the influence of individual factors of the general environmental impact, such as the influence of humidity, meteorological conditions, the content of individual nutrient components of the soil on the yield, was studied. The meteorological conditions in this region in 2021 and the data of agrochemical analysis of the soil on which the oilseed crop was grown were evaluated. Sentinel-2 satellite images were used to determine the NDVI and GNDVI indices. A high content of nitrate nitrogen (12.3-16.2 mg/kg), a very low level of available phosphorus (3-10 mg/kg), and a high content of potassium (289-420 mg/kg) were found in the soil. A low content of humus (2.68-3.31%) and sulfur (1.1-4.9 mg/kg) was found. A study of the NDVI growth index showed that the highest value was reached by the period of July 20, 2021. After this period, a decrease in the vegetation index was observed. In conditions of severe drought, this change occurred earlier than under favorable conditions, and correlated with low flax yield (1.6-6.9 c/ha). This study demonstrates the potential of Sentinel-2 for quantifying soil conditions, which not only improves our understanding of spatial-temporal dynamics and environmental components in organic agriculture in the steppe zone of Kazakhstan, but also improves the management of Linum usitatissimum productivity.

show abstract

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

Cited by 11 publications

References 75 publications

Electrochemical Struvite Precipitation Enhanced by an Amelogenin Peptide for Nutrient Recovery

Electrochemical Struvite Precipitation Enhanced by an Amelogenin Peptide for Nutrient Recovery

Ideotype breeding for crop adaptation to low phosphorus availability on extensive organic farms

Quantitative assessment of soil condition, basic environmental factors and productivity of Linum usitatissimum in the steppe zone of Kazakhstan using the remote sensing method

Contact Info

Product

Resources

About