Effects of Long-Term Multi-Treatment Experiments on Organic Matter and Enzymatic Activity in Sandy Soil

Sustainability, Journal Year: 2025, Volume and Issue: 17(7), P. 3252 - 3252

Published: April 5, 2025

This study shows an evaluation of the condition organic matter against enzymatic activity in soil. Long-term static field experiments with fertilisation manure (FYM), different minerals, and mineral–manure were used for research. Assays obtained content total carbon (TOC), dissolved fraction (DOC), susceptibility to oxidation (CL1) (CL), nitrogen (TN), (DTNT), available forms potassium, phosphorus, magnesium. The enzymes dehydrogenases, catalase, β-glucosidase, proteases, alkaline, acid phosphatase was determined. We calculated indices those evaluating labile management (CMI CPI) An increase TOC, up 8.85 g kg−1 8.56 (FYM, FYM + KN), respectively, as compared control (5.67 kg−1), did not have a significant effect on CL treatments. Only higher found soil PN NPK Mg treatments (2.07 2.05 kg−1). All under demonstrated decrease value index (CMI). Similar DOC values (on average, 75.14 mg kg−1) noted. average percentage share accounted 1.163% it lower variant (1.33% TOC). mineral decreased enzyme activities. Multiparametric fertility differed due properties, depending applied.

Language: Английский

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Aquaponic Systems for Sustainable Resource Recovery: Linking Nitrogen Transformations to Microbial Communities

Environmental Science & Technology, Journal Year: 2018, Volume and Issue: 52(21), P. 12728 - 12739

Published: Sept. 28, 2018

Aquaponics is a technology for food production (fish and vegetables/fruits) with concomitant remediation of nitrogen-rich aquaculture effluent. There is, however, critical need to improve the nitrogen use efficiency (NUE) in aquaponics. Here, we employed quantitative polymerase chain reactions next-generation sequencing evaluate bacterial communities their links transformations improving NUEs four bench-scale plant-based floating-raft aquaponics (pak choi, lettuce, chive, tomato) three pH levels (7.0, 6.0, 5.2). Low relative abundance nitrifiers plant roots biofilters suggested loss, which decreased NUE level was major factor that shifted microbial reduced aquaponic systems, leading total ammonia accumulation recirculating water. In roots, nitrite-oxidizing bacteria (e.g., Nitrospira spp.) did not decrease at low levels, suggesting benefit growing plants efficient nitrification NUE. These findings on provided complementary strategies performance regarding water quality extent nutrient recovery from

Language: Английский

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Effect of biochars pyrolyzed in N2 and CO2, and feedstock on microbial community in metal(loid)s contaminated soils

Environment International, Journal Year: 2019, Volume and Issue: 126, P. 791 - 801

Published: March 21, 2019

Little is known about the effects of applying amendments on soil for immobilizing metal(loid)s microbial community. Alterations in community were examined after incubation treated contaminated soils. One was with Pb and As, a second Cd Zn. Red pepper stalk (RPS) biochars produced from RPS either N2 atmosphere (RPSN) or CO2 (RPSC) applied at rate 2.5% to two soils incubated 30 days. Bacterial communities control characterized by sequencing 16S rRNA genes using Illumina MiSeq sequencing. In both soils, bacterial richness increased amended though somewhat differently between treatments. Evenness values decreased significantly, final overall diversities reduced. The neutralization pH, reduced available concentrations Cd, supplementation carbon surface area could be possible factors affecting changes. Biochar caused become more similar than those not structures phylum genus levels showed that amendment addition might restore normal cause normalize stabilize.

Language: Английский

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Soil bacterial biodiversity is driven by long-term pasture management, poultry litter, and cattle manure inputs

PeerJ, Journal Year: 2019, Volume and Issue: 7, P. e7839 - e7839

Published: Oct. 1, 2019

Soil microorganisms are important for maintaining soil health, decomposing organic matter, and recycling nutrients in pasture systems. However, the impact of long-term conservation management on microbial communities remains unclear. Therefore, microbiome responses to is an component especially largest agricultural land-use US. The aim this study was identify community differences following 13-years (hayed (no cattle), continuously grazed, rotationally grazed with a fenced, un-grazed unfertilized buffer strip, control poultry litter or cattle manure inputs)). Since 2004, all pastures (excluding control) received annual at rate 5.6 Mg ha-1. samples were collected 0-15 cm depth from 2016-2017 either pre post applications, bacterial characterized using Illumina 16S rRNA gene amplicon sequencing. Overall, influenced structure, effects different by year (P < 0.05). Soils receiving no had lowest richness (Chao). Continuously systems greater 0.05) richness, which corresponded pH nutrients. Consequently, may increase diversity, owing continuous nutrient-rich deposition; however, strategy adversely affect aboveground plant water quality. These results suggest (e.g., systems) not improve albeit, strips reduced movement as evident low diversity fertility these areas compared inputs. animal inputs (litter manure) increased be mechanism improved health.

Language: Английский

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Effects of soil properties, heavy metals, and PBDEs on microbial community of e-waste contaminated soil

Ecotoxicology and Environmental Safety, Journal Year: 2019, Volume and Issue: 180, P. 705 - 714

Published: May 28, 2019

Language: Английский

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