Polyphosphate fertilizer use efficiency strongly relies on soil physicochemical properties and root-microbial activities

Khourchi, Said; Delaplace, Pierre; Bargaz, Adnane

doi:10.1016/j.geoderma.2022.116281

Cited by 10 publications

(11 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polyphosphates may prevent or delay precipitation reactions through the formation of soluble complexes with dissolved cations . In addition, polyphosphates can be adsorbed onto mineral surfaces in soil like orthophosphate but can still undergo hydrolysis resulting in the release of orthophosphate over time . As the soils of this study had a neutral to alkaline pH and relatively low to moderate organic carbon content (0.8–2.1%), a low hydrolysis rate for polyphosphate is expected, resulting in high labile P concentrations in both soils.…”

Section: Resultsmentioning

confidence: 96%

“…29 In addition, polyphosphates can be adsorbed onto mineral surfaces in soil like orthophosphate but can still undergo hydrolysis resulting in the release of orthophosphate over time. 30 As the soils of this study had a neutral to alkaline pH and relatively low to moderate organic carbon content (0.8−2.1%), a low hydrolysis rate for polyphosphate is expected, resulting in high labile P concentrations in both soils. This study shows that reactions of different forms of P fertilizers in the fertosphere are complex, and this novel DGT design with a gel-free BL can provide an easy and convenient method to visualize P availability in 2D.…”

Section: Comparison Of P Diffusion In Two Contrasting Soilsmentioning

confidence: 92%

See 1 more Smart Citation

Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy

Moens,

Lombi,

Howard

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

A novel binding layer (BL) as part of the diffusive gradients in thin films (DGT) technique was developed for the two-dimensional visualization and quantification of labile phosphorus (P) in soils. This BL was designed for P detection by synchrotron-based X-ray fluorescence microscopy (XFM). It differs from the conventional DGT BL as the hydrogel is eliminated to overcome the issue that the fluorescent X-rays of P are detected mainly from shallow sample depths. Instead, the novel design is based on a polyimide film (Kapton) onto which finely powdered titanium dioxide-based P binding agent (Metsorb) was applied, resulting in superficial P binding only. The BL was successfully used for quantitative visualization of P diffusion from three conventional P fertilizers applied to two soils. On a selection of samples, XFM analysis was confirmed by quantitative laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The XFM method detected significant differences in labile P concentrations and P diffusion zone radii with the P fertilizer incubation, which were explained by soil and fertilizer properties. This development paves the way for fast XFM analysis of P on large DGT BLs to investigate in situ diffusion of labile P from fertilizers and to visualize large-scale P cycling processes at high spatial resolution.

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Comparison Of P Diffusion In Two Contrasting Soilsmentioning

confidence: 92%

Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy

Moens,

Lombi,

Howard

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Previous research revealed the predominance of P ir instead of P ix in water-extractable P from PL-derived biochars, presumably owing to the high ash content (28.5 wt%) and ∑(Na + K + Ca + Mg):P equivalent ratio (7.45) of PL [ 18 , 20 ]. In soil, P ix is readily hydrolyzable to become the plant-available P ir form [ 34 ]. The sequentially NaHCO 3 -extractable P from raw CSM consisted of 37.4% P o , 49.8% P ix , and 12.8% P ir .…”

Section: Resultsmentioning

confidence: 99%

Fractionation and Lability of Phosphorus Species in Cottonseed Meal-Derived Biochars as Influenced by Pyrolysis Temperature

Guo,

He,

Tian

2024

Molecules

View full text Add to dashboard Cite

Defatted cottonseed meal (CSM), the residue of cottonseeds after oil extraction, is a major byproduct of the cotton industry. Converting CSM to biochar and utilizing the goods in agricultural and environmental applications may be a value-added, sustainable approach to recycling this byproduct. In this study, raw CSM was transformed into biochar via complete batch slow pyrolysis at 300, 350, 400, 450, 500, 550, and 600 °C. Thermochemical transformation of phosphorus (P) in CSM during pyrolysis was explored. Fractionation, lability, and potential bioavailability of total P (TP) in CSM-derived biochars were evaluated using sequential and batch chemical extraction techniques. The recovery of feed P in biochar was nearly 100% at ≤550 °C and was reduced to <88% at 600 °C. During pyrolysis, the organic P (OP) molecules predominant in CSM were transformed into inorganic P (IP) forms, first to polyphosphates and subsequently to orthophosphates as promoted by a higher pyrolysis temperature. Conversion to biochar greatly reduced the mobility, lability, and bioavailability of TP in CSM. The biochar TP consisted of 9.3–17.9% of readily labile (water-extractable) P, 10.3–24.1% of generally labile (sequentially NaHCO3-extractable) P, 0.5–2.8% of moderately labile (sequentially NaOH-extractable) P, 17.0–53.8% of low labile (sequentially HCl-extractable) P, and 17.8–47.5% of residual (unextractable) P. Mehlich-3 and 1 M HCl were effective batch extraction reagents for estimating the “readily to mid-term” available and the “overall” available P pools of CSM-derived biochars, respectively. The biochar generated at 450 °C exhibited the lowest proportions of readily labile P and residual P compounds, suggesting 450 °C as the optimal pyrolysis temperature to convert CSM to biochar with maximal P bioavailability and minimal runoff risk.

show abstract

“…In that regard, polyphosphates (PolyP) were developed as P polymeric fertilizers characterized by their lower susceptibility to adsorption (onto mineral oxides and clays), and likely progressive hydrolysis during plant growth, as well as their potential effects on root growth ( McBeath et al, 2005 ; Torres-Dorante et al, 2006 ; Gao et al, 2020 ; Kusi et al, 2021 ; Chtouki et al, 2022 ; Khourchi et al, 2022b ). The agronomic use efficiency of PolyP was highly dependent on their rate of hydrolysis, which was governed by intricate interactions of soil and plant related factors (i.e., physicochemical: pH, temperature, soil moisture, etc., and biological: microbial and root activities) ( Dick and Tabatabai, 1987 ; McBeath et al, 2007 ; Chtouki et al, 2022 ; Khourchi et al, 2022a , 2023 ).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, a PSB consortium (PSB Cs ) showed the highest PolyP hydrolysis rate compared to individual PSB species, which is likely explained by significant amounts of organic acids, APase, and pyrophosphatases exuded by PSB Cs under PolyP application ( Khourchi et al, 2022a ). However, the research gap regarding the potential contribution of PSB as well as the microbial mechanisms involved in PolyP use efficiency in plant–soil continuum remain unaddressed ( Khourchi et al, 2023 ), with only one published study by Khourchi et al (2022a) . Hence, the present study is among the first to evaluate the effects of PSB-PolyP co-application on PUE and plant growth performance.…”

Section: Introductionmentioning

confidence: 99%

Integrated use of polyphosphate and P-solubilizing bacteria enhanced P use efficiency and growth performance of durum wheat

et al. 2023

Self Cite

View full text Add to dashboard Cite

Coupling phosphate-solubilizing bacteria (PSB) with P fertilizers, including polyphosphates (PolyP), was reported as eco-efficient approach to enhance P use efficiency. Although PSB have been recently reported to hydrolyze PolyP, the plant growth promoting mechanisms of PolyP-PSB co-application were not yet uncovered. This study aims to evaluate the effect of a PSB consortium (PSBCs) on growth, P use efficiency (PUE), and wheat yield parameters under PolyP (PolyB) application. Co-application of PolyB-PSBCs significantly enhanced wheat growth at 75 days after sowing (DAS) compared to 30 DAS. A significant increase in shoot dry biomass (47%), shoot inorganic P content (222%), PUE (91%), and root P absorption efficiency (RPAE, 99%) was noted compared to unfertilized plants. Similarly, the PolyB-PSBCs co-application enhanced morphological root traits at 30 DAS, while acid phosphatase activities (root and rhizosphere), RPAE, and PUE were significantly increased at 75 DAS. The improved wheat P acquisition could be attributed to a lower investment in root biomass production, and significant induction of acid phosphatase activity in roots and rhizosphere soil under PolyB-PSBCs co-application. Consequently, the PolyB-PSBCs co-application significantly improved aboveground performance, which is reflected by increased shoot nutrient contents (P 300%, K 65%), dry weight (54%), and number (50%) of spikes. Altogether, this study provides relevant evidence that co-application of PolyP-PSBCs can be an integrated and environmentally preferred P fertilization approach owing to the dual effects of PolyP and PSBCs on wheat PUE.

show abstract

Polyphosphate fertilizer use efficiency strongly relies on soil physicochemical properties and root-microbial activities

Cited by 10 publications

References 66 publications

Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy

Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy

Fractionation and Lability of Phosphorus Species in Cottonseed Meal-Derived Biochars as Influenced by Pyrolysis Temperature

Integrated use of polyphosphate and P-solubilizing bacteria enhanced P use efficiency and growth performance of durum wheat

Contact Info

Product

Resources

About