Drainage class and soil phosphorus availability shape microbial communities in Irish grasslands

Graça, Jessica; Daly, Karen; Bondi, Giulia; Ikoyi, Israel; Crispie, Fiona; Cabrera‐Rubio, Raúl; Cotter, Paul D.

doi:10.1016/j.ejsobi.2021.103297

Cited by 12 publications

(9 citation statements)

References 40 publications

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“…The results of our study indicate a significant positive correlation between fungi numbers and P and K contents. A similar effect of P content on fungi abundance was reported by Graça et al [31] for grassland soils in Ireland. Moreover, Chmolowska et al [32], who studied grassland soils in the Polish Western Outer Carpathians, reported that the availability of P and K significantly affects root colonization by arbuscular mycorrhizal fungi.…”

Section: Discussionsupporting

confidence: 87%

Interplay between Selected Chemical and Biochemical Soil Properties in the Humus Horizons of Grassland Soils with Low Water Table Depth

et al. 2022

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Grasslands are the most carbon-rich of all agricultural ecosystems, but are also the most endangered. The global area of grassland decreased during the 20th century, mainly due to conversion to arable land, improper management, and abandonment. Due to ongoing climate change, maintenance of an adequate level of soil organic matter is of primary importance, not only to maintain the productive function of the soils, but also to ensure their role as carbon stores. The main aim of this study was to assess the linkages between selected chemical and biochemical soil properties in alluvial grassland soils, characterized by a low water table. The area under study was located in the Koło Basin, central Poland. Soil parameters, such as total organic carbon, total nitrogen, pH, phosphorus, magnesium, and potassium contents, as well as enzymatic activity and soil microbial structure were studied. Positive correlations were observed between total organic carbon content and the following enzymatic activities: dehydrogenase (r = 0.63), acid phosphatase (r = 0.69), and alkaline phosphatase (r = 0.86). There was a significant correlation between fungi abundance and phosphorus and potassium contents, and between actinobacteria abundance and total organic carbon content.

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Section: Discussionsupporting

confidence: 87%

Interplay between Selected Chemical and Biochemical Soil Properties in the Humus Horizons of Grassland Soils with Low Water Table Depth

et al. 2022

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“…1 kg). Full description of the experimental design is available in Graça et al [21] and Bondi et al [22]. Composite soil samples were dried at 40 • C, sieved at 2 mm and stored for analysis of soil chemical properties.…”

Section: Permanent Grassland Sitesmentioning

confidence: 99%

Phosphorus Fractions in Temperate Grassland Soils and Their Interactions with Agronomic P Tests

et al. 2022

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Phosphorus (P) is a major nutrient for plant growth and animal health, and its availability in soil is influenced by agronomic management and soil properties. This study examined the distribution of labile and non-labile soil P fractions in grassland and the properties that influence their distribution in temperate grasslands. Eleven fractions were identified as, labile (H2O.P and NaHCO3.P), moderately labile (NaOH.P) and plant non-available (NaOH.P, HCl.P and residual P). The residual P, moderately labile organic (NaOH.Po) and inorganic (NaOH.Pi) fractions comprised 38%, 24% and 15% of the total P (TP), respectively. The residual and organic (Po) fractions were associated with extractable Fe, and the NaOH.Pi fraction was associated with extractable Al. Agronomic reagents (Morgan’s and Mehlich3) targeted specific fractions based on their affinity for different soil elements. Morgan’s P was associated with extractable and residual Ca and in high Ca soils, and overestimated plant-available P by extracting non-labile Ca.P forms (HCl.P). The Mehlich3 P test was associated with NaOH.Pi fraction and showed a preference for Al.P oxides. This study indicates that Mehlich3 reagent, which provides a wider suite of elements such as P, Ca, Al and Fe, will suit as a better indicator for soil P dynamics and improved P advice to farmers. The inclusion of additional soil chemico-physical characteristics would improve agronomic soil testing, benefitting farmers’ advice.

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“…The cycling conditions were initial denaturation (95 °C, 5 min), followed by 45 cycles of denaturation (95 °C for 3 s), annealing (60 °C for 20 s), elongation and detection (72 °C, 10 s) followed by a melting curve. phoD qPCR was carried out as described previously (Graça et al ., 2021) with primers ALPS-F730 (5’-CAG TGG GAC GAC CAC GAG GT-3’) and ALPS-R1101 (5’-GAG GCC GAT CGG CAT GTC G-3’) (Sakurai et al ., 2008) and the same cycling conditions as for phoC . Absolute quantifications were reported in copies per g -1 soil.…”

Section: Methodsmentioning

confidence: 99%

Section: Sample Processing and Analysismentioning

confidence: 99%

The impact of struvite and ash recycling-derived fertilizers on microbial phosphorus mobilization capabilities and community structure in aLolium perennefield trial

Deinert,

Ashekuzzaman,

Forrestal

et al. 2024

Preprint

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Rock phosphate is a non-renewable primary source for mineral phosphorus (P) fertilizers that intensive agriculture is highly dependent on. To avoid P fertilizer shortages and limit negative environmental impacts, circular economy approaches are needed with recycling-derived fertilizer (RDF) applications such as struvites and ashese. Hence, a grassland field trial was conducted with four RDFs, two struvites (potato wastewater, municipal wastewater) and two ashes (poultry-litter ash, sewage-sludge ash) at a P application rate of 40 kg P ha-1 (n=5). The impact of the RDFs on the soil microbial P cycling community was compared to conventional mineral P-fertiliser and a P-free control. Topsoil samples were taken directly after Lolium perenne grass cuts at months three, fife and 15. Cultivable phosphonate and phytate utilizing bacteria, potential acid and alkaline phosphomonoesterase activity, and phoC and phoD copy numbers responded stronger to seasonal effects than treatment effects. No significant overall effect of the fertilizer application was detected in the beta diversity of the bacterial and fungal communities after 15 months, but individual phylogenetic groups were affected by the treatments. The ash treatments demonstrated some distinguishing results across the bacterial and fungal community, with significantly higher relative abundance of Firmicutes and Rokubacteria and lower relative abundance of Actinobacteriota. Sewage-sludge ash had significantly lowest abundances of genera Bacillus and Bradyrhizobium (month 15s) that are well known for their P cycling abilities. The struvite RDFs either positively influenced the P cycling microbial community or did not affect it at all, while demonstrating better tri-calcium phosphate solubilizing capabilities after the 3 months harvest. These findings indicate that struvites could be a suitable replacement for conventional P fertilizers in the future.

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Drainage class and soil phosphorus availability shape microbial communities in Irish grasslands

Cited by 12 publications

References 40 publications

Interplay between Selected Chemical and Biochemical Soil Properties in the Humus Horizons of Grassland Soils with Low Water Table Depth

Interplay between Selected Chemical and Biochemical Soil Properties in the Humus Horizons of Grassland Soils with Low Water Table Depth

Phosphorus Fractions in Temperate Grassland Soils and Their Interactions with Agronomic P Tests

The impact of struvite and ash recycling-derived fertilizers on microbial phosphorus mobilization capabilities and community structure in aLolium perennefield trial

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