Impact of N-fertilization and peanut shell biochar on soil microbial community structure and enzyme activities in a Typic Haplustoll under different management practices

Dominchin, Maria Florencia; Verdenelli, Romina Aylén; Berger, Micaela Gisell; Aoki, Antonio Marcelo; Meriles, José Manuel

doi:10.1016/j.ejsobi.2021.103298

Cited by 30 publications

(12 citation statements)

References 42 publications

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“…In particular, Bacillus OTUS were higher in sandy loam than in loam and clay loam, possibly accounting for the greater N mineralisation and supply capacity of sandy loam soils. Previous studies have reported that soil texture properties shape soil bacterial and protist communities 39 ; here, we found that the soil bacterial community, and especially those involved in soil N transformation, were directly affected by N fertilisation, to which they responded by increasing N availability, a result consistent with that of previous research 65 , 66 . In addition, N fertilisation affects soil bacterial communities indirectly by altering soil properties, such as pH and organic matter 67 .…”

Section: Discussionsupporting

confidence: 92%

Effects of soil texture and nitrogen fertilisation on soil bacterial community structure and nitrogen uptake in flue-cured tobacco

Zheng¹,

Pei²,

Zheng³

et al. 2021

Sci Rep

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We tested the hypothesis that soil texture and nitrogen (N) fertilisation are the primary factors regulating the N cycle and soil bacterial community structure. The response of soil bacterial communities to N fertilisation in different textured soils might help in identifying the specific underlying mechanism and hence management of N fertiliser application in fields. We examined how N fertiliser accumulates in flue-cured tobacco and influences soil bacterial community structure in different textured soils. We conducted plot and micro-plot experimental measurements of N content in soil and tobacco samples using the KNO315N isotope technique. Soil bacterial community structure was determined using high-throughput sequencing of 16S rRNA. Nitrogen absorption and utilisation by tobacco plants were highest in sandy loam soils, followed by loam soil and clay loam. The ability of clay loam to supply N was weak during the plant growth period. Absence of fertilisation could reduce bacterial abundance in soils to various degrees. Bacterial diversity was higher in sandy loam soil than in loam soil and clay loam. Soil texture and N fertilisation significantly affected soil bacterial community structure and diversity. Proteobacteria, Acidobacteria, Firmicutes, Bacteroidetes, Actinobacteria, and Chloroflexi were the dominant bacterial phyla, while Bacillus, Nitrobacter, Nitrosospira, Nitrospira, and Rhizobium were the primary N transformation bacteria at the genus level in all treatments. However, relative abundances differed with N fertiliser application, which could lead to differential N availability and N use efficiency of tobacco among soil types. We conclude that both soil texture and N fertilisation influence N accumulation and distribution in flue-cured tobacco and thus regulate soil bacterial communities. N fertiliser application in sandy loam soil should be strictly controlled for its higher N use efficiency, soil bacterial abundance, and diversity.

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Section: Discussionsupporting

confidence: 92%

Effects of soil texture and nitrogen fertilisation on soil bacterial community structure and nitrogen uptake in flue-cured tobacco

Zheng¹,

Pei²,

Zheng³

et al. 2021

Sci Rep

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“…Engineered biochar can be prepared from various resources such as wood wastes [ 33 ], crop residues [ 34 ], animal wastes [ 35 ], peanut shells [ 36 ], algal biomass [ 37 ], sawdust [ 38 ], sugarcane bagasse [ 39 ], tea waste, [ 40 ] and biosolids [ 41 ]. The addition of biochar has tremendous advantages [ 42 ].…”

Section: Application Of Engineered Biochar In Different Fieldsmentioning

confidence: 99%

“…Several researches have proposed contradictory results. The utilization of peanut shell biochar as an additive increased glucosidase, glucuronidase, and phosphomonoesterase activity [ 36 , 277 ] developed Platanus orientalis branches biochar and modified with iron, and then applied in a paddy soil. Interestingly, pristine biochar enhanced the activities of soil catalase and urease, but the activities were suppressed by Fe-modified biochar ( Table 3 ).…”

Section: Role Of Biochar On Microbial Dynamics and Enzymes Activitiesmentioning

confidence: 99%

Bioengineered biochar as smart candidate for resource recovery toward circular bio-economy: a review

et al. 2021

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Biochar’s ability to mediate and facilitate microbial contamination degradation, as well as its carbon-sequestration potential, has sparked interest in recent years. The scope, possible advantages (economic and environmental), and future views are all evaluated in this review. We go over the many designed processes that are taking place and show why it is critical to look into biochar production for resource recovery and the role of bioengineered biochar in waste recycling. We concentrate on current breakthroughs in the fields of engineered biochar application techniques to systematically and sustainable technology. As a result, this paper describes the use of biomass for biochar production using various methods, as well as its use as an effective inclusion material to increase performance. The impact of biochar amendments on microbial colonisation, direct interspecies electron transfer, organic load minimization, and buffering maintenance is explored in detail. The majority of organic and inorganic (heavy metals) contaminants in the environment today are caused by human activities, such as mining and the use of chemical fertilizers and pesticides, which can be treated sustainably by using engineered biochar to promote the establishment of a sustainable engineered process by inducing the circular bioeconomy.

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“…The activity of urease was expressed asµg NH 4 + -N g −1 dry soil d −1 . The activities of nitrate reduxtase and nitrite reductase activities were assayed as described by Dominchin (2021). The MBC and MBN were measured by chloroform fumigation-extraction.…”

Section: Soil Sample Collection and Preparationmentioning

confidence: 99%

Impacts of Fertilization Optimization on Ammonia Volatilization, Soil Nitrification, Denitration Intensity From Wheat Fields and Nitrogen Utilization Under Water-saving Irrigation

Zhang¹,

Yu²,

Zhang³

et al. 2021

Preprint

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Scholars have proposed the practice of split N fertilizer application (SNFA), which has proven to be an effective approach for enhancing N use efficiency. However, the effect of SNFA on NH3 volatilization, nitrification and denitration in soil, remain largely unknown. As such, the current study assessed soil NH3 volatilization, nitrification and denitrification intensities, abundance of nitrogen cycle-related funetional genes, and invertase activity for different treatments. We applied a rate of 240 kg·ha-1 of N, and the following fertilizer ratios of the percent base to that of topdressing under water-saving irrigation: N1 (basal/dressing, 100%/0%), N2 (basal/dressing, 70%/30%), N3 (basal/dressing, 50%/50%), N4 (basal/dressing, 30%/70%), and N5 (basal/dressing, 0%/100%). N3 treatment resulted in a significant decrease in rate of NH3 volatilization. This treatment also significantly reduced nitrification and denitrification intensities, primarily owing to the reduced functional genes abundance involved in the nitrogen cycle (Amoa-AOB, nirK and nirS) and reduced invertase activity (urease, nitrate reductase, nitrite reductase) in wheat-land soil. 15N tracer studies further demonstrated that N3 treatments significantly increased the grain nitrogen accumulation by 9.50-28.27% compared with that under other treatments. This increase was primarily due to an increase in the amount of N absorbed by wheat from soil and fertilizers, which was caused by an enhancement in total N uptake (7.2-21.81%). Collectively, these results suggest that the N3 treatment (basal/dressing, 50%/50%) improves N uptake by wheat, reduces the soil NH3 volatilization rate, and has the potential to reduce the amount of N2O generated by nitrification and denitrification.

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Impact of N-fertilization and peanut shell biochar on soil microbial community structure and enzyme activities in a Typic Haplustoll under different management practices

Cited by 30 publications

References 42 publications

Effects of soil texture and nitrogen fertilisation on soil bacterial community structure and nitrogen uptake in flue-cured tobacco

Effects of soil texture and nitrogen fertilisation on soil bacterial community structure and nitrogen uptake in flue-cured tobacco

Bioengineered biochar as smart candidate for resource recovery toward circular bio-economy: a review

Impacts of Fertilization Optimization on Ammonia Volatilization, Soil Nitrification, Denitration Intensity From Wheat Fields and Nitrogen Utilization Under Water-saving Irrigation

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