Effects of Biochar Blends on Microbial Community Composition in Two Coastal Plain Soils

Ducey, Thomas F.; Novak, Jeffrey M.; Johnson, Mark G.

doi:10.3390/agriculture5041060

Cited by 29 publications

(17 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicated that the presence of biochar in the sand media encouraged microbial growth particularly in the upper 20 cm. Increase of microbial population in soil amended with biochar has been reported by several authors (Lehmann et al 2011, Ducey et al 2015, Xu et al 2014, Lehmann and Joseph 2012. Microorganisms tend to live in porous structure of the biochar which serve as a habitat to soil microorganism and protect the microorganisms from microarthropods (Gul et al 2015).…”

Section: Tp and Po 4 -P Secondary Clarified Wastewater (March-october 2014)mentioning

confidence: 55%

Lampiran 1D paper Phosphorus removal from secondary sewage and septage using sand media amended with biochar in constructed wetland mesocosms

Rozari¹

2021

Preprint

View full text Add to dashboard Cite

To improve the performance efficiency of subsurface constructed wetlands (CWs), a variety of media have been tested. Recently, there has been a rising interest in biochar. This research aims to develop the effectiveness of sand media amended with biochar and two plants species (Melaleuca quinquenervia and Cymbopogon citratus) in removing phosphorus from sewage effluent in CWs. The experimental design consisted of vertical flow (VF) mesocosms with seven media treatments based on the proportions of biochar in the sand media which ranged from 0 to 25% by volume. During the first 8 months, the mesocosms were loaded with secondary clarified wastewater (SCW) then septage was used for the remaining 8 months. Inflow and outflow were monitored for total phosphorus (TP) and PO4-P. Plants were harvested at the end of the experiment and TP biomass was determined. Removal efficiencies of TP in the mesocosms loaded with SCW and septage ranged from 42 to 91% and 30 to 83%, respectively. Removal efficiencies of PO4-P ranged from 43 to −92% and 35 to 85% for SCW and septage, respectively. The results revealed that the sand media performed better than the biochar-amended media; increasing the proportion of biochar in the media decreased removal efficiency of phosphorus. However, after flushing due to major rain event, there was no significant difference between sand and sand augmented with 20% biochar

show abstract

Section: Tp and Po 4 -P Secondary Clarified Wastewater (March-october 2014)mentioning

confidence: 55%

Lampiran 1D paper Phosphorus removal from secondary sewage and septage using sand media amended with biochar in constructed wetland mesocosms

Rozari¹

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The mechanisms underlying how plants and soil amendments impact bacterial and fungal diversity have been proposed recently (Xu et al, 2014;Ducey et al, 2015). The current study provided a significant step forward in improving our understanding of the factors that influence rhizosphere fungal communities in manure fertilized soils.…”

Section: Alternative Mechanisms Influencing Fungal Life Strategies Anmentioning

confidence: 72%

Straw biochar strengthens the life strategies and network of rhizosphere fungi in manure fertilized soils

et al. 2019

View full text Add to dashboard Cite

Soil fungi have many important ecological functions, however, their life strategies and interactions in manure fertilized soils are not well understood. The aim of this study was to investigate the effects of biochar amendment on the fungal life strategies and species interactions in ryegrass (Lolium perenne L.) rhizosphere soil by high-throughput sequencing. Three soil treatments were evaluated: soil and pig manure mixture without planting ryegrass and biochar application (bulk soil), mixture with ryegrass planting (rhizosphere soil (RS)), and addition of 2% (w/w) biochar with ryegrass (RS + biochar). Our results indicated that temporal turnover, defined as the slope of linear regression between community similarity and time, was significantly higher in the biochar amendment (slope =-0.2689, p < 0.0001) relative to the rhizosphere soil. Following biochar addition, the percentage of species employing slow acclimation ecological strategies decreased (from 27% to 17%) and the percentage of sensitive species increased (from 40% to 50%) in comparison to the rhizosphere soil. Network analysis indicated that fungal communities in the biochar amendment enhanced positive correlations compared to the rhizosphere soil and bulk soil. Structural equation model indicated that soil pH was the most important factor in altering fungal life strategies and interactions in manure fertilized soils.

show abstract

“…As reported by Foster et al (2016), enzymatic activities in soils are sensitive to pH. The number of microorganisms in acidic soil is much lower, a consequence of which enzymatic activity was also low (Mierzwa-Hersztek et al 2016;Ducey et al 2015;Ouyang et al 2014). Frankenberger and Johanson (1982) concluded that enzyme activity in soils can be altered with changes in pH because of the reversible reaction that involves ionization and deionization of prototropic groups in the active center of enzyme-protein or irreversible inactivation of the enzyme.…”

Section: Discussionmentioning

confidence: 88%

Urease activity and nitrogen dynamics in highly weathered soils with designer biochars under corn cultivation

Sigua

Novak

Watts

et al. 2020

Biochar

View full text Add to dashboard Cite

The application of designer biochar has the potential to impact soil enzyme activity and soil nitrogen dynamics. However, very little is known about the mechanisms responsible for biochar-enzyme-nitrogen interaction in highly weathered soils. The objective of our 3-year (2016-2018) field experiment was to evaluate the effectiveness of designer biochars (DB) in enhancing urease activity (UA), total nitrogen (TN), total inorganic nitrogen (TIN), and nitrogen uptake (NU) at different growth stages (GS) of corn in a highly weathered soil of southeastern Coastal Plain region, USA. Experimental treatments have consisted of the control, 100% pine chips (100PC), 100% poultry litter (100PL), 2:1 blend of PC and PL (PCPL), 100% raw switchgrass (Panicum vaginatum, L; 100RSG), and 2:1 blend of PC and RSG (PCRSG). All the designer biochar treatments were applied at the rate of 30,000 kg ha −1 to a Goldsboro loamy sand in 2016. Urease activity, TN, TIN, and NU varied remarkably with DB (p ≤ 0.0001) at different GS (p ≤ 0.0001) of corn. Soils treated with 100PL had the greatest UA (28.18 µg N g −1 h −1), TN (0.087%), and TIN (14.53 mg kg −1) while the least UA, TN, and TIN of 20.55 µg N g −1 h −1 , 0.063%, and 5.42 mg kg −1 , respectively, were observed from the control. The three-year TN average increase over the control was in the order: 100PL (36.8%) > 100RSG (25.8%) > PCRSG (25.3%) > PCPL (23.9%) > 100PC (7.1%). The greatest NU of corn of 140.4 kg N ha −1 was from soils treated with 100PL while the least amount of NU was from 100PC. Overall, our results showed promising significance for the treatment of highly weathered soils since the application of DB did enhance UA and improve TN and TIN in the soils.

show abstract

Effects of Biochar Blends on Microbial Community Composition in Two Coastal Plain Soils

Cited by 29 publications

References 35 publications

Lampiran 1D paper Phosphorus removal from secondary sewage and septage using sand media amended with biochar in constructed wetland mesocosms

Lampiran 1D paper Phosphorus removal from secondary sewage and septage using sand media amended with biochar in constructed wetland mesocosms

Straw biochar strengthens the life strategies and network of rhizosphere fungi in manure fertilized soils

Urease activity and nitrogen dynamics in highly weathered soils with designer biochars under corn cultivation

Contact Info

Product

Resources

About