Higher ammonium-to-nitrate ratio shapes distinct soil nitrifying community and favors the growth of Moso bamboo in contrast to broadleaf tree species

Hu, Xiaosong; Wang, Xingmeng; Abbas, Touqeer; Fang, Tao; Miao, Danni; Li, Y.; Chang, Scott X.

doi:10.1007/s00374-021-01596-8

Cited by 25 publications

(4 citation statements)

References 59 publications

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“…We found that vegetable growth and N assimilation were enhanced by the low NH 4 + /NO 3 − ratio (Fig. 2), which supported the previous observations (Hu et al 2021). In biocharamended soils, due to its higher surface area and porosity, the higher N bioavailability promoted soil microbial activity (Agegnehu et al 2016) and accelerated nutrient cycling, further increasing crop productivity and NUE (Bailey et al 2011).…”

Section: Crop Production and Nue As Affected By Biochar And Organic S...supporting

confidence: 89%

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Zhang

Zhan

et al. 2022

Biochar

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Biochar amendment and substituting chemical fertilizers with organic manure (organic substitution) have been widely reported to increase crop production and decrease reactive nitrogen (Nr) loss including nitrous oxide (N2O), nitric oxide (NO), and ammonia (NH3) emissions, and N runoff and leaching. However, few comprehensive evaluations have been performed on the environmental and economic aspects of biochar amendment or organic substitution. Here, we studied the comprehensive effects of biochar amendment, organic substitution, and biochar amendment combined with organic substitution on crop production, Nr loss, and net ecosystem economic benefit (NEEB) in intensive vegetable production by integrating life-cycle assessment for Nr footprints, empirical models for NH3 volatilization and N runoff and leaching derived from peer-reviewed publications and validated by the current measurements and direct field measurement for N2O and NO emissions during 5 consecutive years of vegetable crop rotations. Five fertilization treatments were applied (SN: synthetic fertilizer application; SNB: SN plus 20 t ha−1 biochar amendment; SNM: substituting 50% of chemical N fertilizer with organic manure; SNMB: SNM plus 20 t ha−1 biochar amendment; and CK: no fertilizer or biochar addition). Compared with the SN, the SNB increased vegetable yield (28.4%, p < 0.05; interannually varying from − 10 to 74.9%) and nitrogen use efficiency (29.2%, interannually varying from − 39.7 to 150.4%), and decreased field Nr loss (45.4%, p < 0.01; interannually varying from − 40.3 to 78.4%), and thus improved NEEB by 7.1%; meanwhile, the SNM increased vegetable yield (11.6%, interannually varying from − 5.4 to 27.1%) and nitrogen use efficiency (45.7%, p < 0.05; interannually varying from 2.3 to 154%), reduced field Nr loss (34.9%, p < 0.01; interannually varying from 8.4–39.0%), and thus improved NEEB by 17.8% (p < 0.05) compared to the SN, being 56.0 × 103 Chinese Yuan (CNY) ha−1 crop−1. Due to the high foreground Nr loss during organic manure production and high input costs of biochar production, the SNMB decreased the NEEB by 8.0% as compared to the SN. Moreover, the SNB and SNM improved vegetable qualities by increasing protein, soluble sugar, and vitamin C contents while decreasing nitrate content (p < 0.05). Therefore, single application of biochar amendment or organic substitution would achieve better NEEB and product quality in vegetable production. Graphical Abstract

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Section: Crop Production and Nue As Affected By Biochar And Organic S...supporting

confidence: 89%

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Zhang

Zhan

et al. 2022

Biochar

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“…The rhizosphere of S. superba is more strongly related to the root surface and Acidobacteriota, which may be related to the N forms in the treatment, tree species and the environment of sand culture substrate (Liu et al 2022;Marschner et al 2004). In summary, under different N forms environment, there are some differences in the main dominant bacteria phyla of C. lanceolata and S. superba, which also shows the differences in rhizosphere soil bacterial communities between coniferous and broad-leaved trees (Hu et al 2021).…”

Section: Ammonium Leads To Larger In Reducing the Bacterial Number Ri...mentioning

confidence: 88%

Responses of Rhizosphere and Root Surface Bacterial Communities and biomass of Cunninghamia lanceolata and Schima superba Seedlings to Nitrogen Forms

Liang,

Wang,

Wang

et al. 2023

Preprint

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Background and aims Ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3−-N) that can be absorbed and utilized by plants are heterogeneously distribute in nature soil, which will affect the plant growth and bacterial communities. This study aims to investigate the effects of single and mixed nitrogen (N) on bacterial communities in rhizosphere and root surface of Cunninghamia lanceolata (CR, CRS) and Schima superba (SR, SRS) seedlings. Methods Three N ratios NH4+-N: NO3−-N = 10:0, 5:5(control, CK), 0:10 were set to grow seedlings in pot culture with sand. The bacteria in the rhizosphere and root surface of the tree species were determined by High-throughput sequencing (16S rDNA), and bacterial numbers and growth indicators were fitted linearly. Results Compared with the CK, the 0:10 increased the bacterial numbers, richness and diversity in CR, while the 10:0 and 0:10 were both decreased them in CRS, SR and SRS, which was more similar between the 0:10 and CK. Overall, the bacterial numbers and richness were: CR > SR > CRS > SRS, but no obvious rule in diversity. The dominant bacterial phyla in CR and CRS were mainly Proteobacteria and Bacteroidota, while in SR and SRS were mainly Proteobacteria and Acidobacteriota. Except for the root biomass of S. superba, the linear relationship of other indicators in the rhizosphere were greater than root surface. Conclusion Mixed N was more conducive to bacterial community proliferation, and there were significant differences between the two tree species and the bacterial communities at different rhizosphere sites.

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“…Analysis of soil properties revealed that the rhizosphere soil of the introduced straight type had significantly lower levels of SOC, AP, AK and NH 4 + -N compared to the straight type at each stage (p < 0.05). This result indirectly suggested that the introduced straight type had fewer available nutrients in the rhizosphere soil, which could lead to the decrease in DBH, BSW and BSR [54]. Meanwhile, apart from a significantly higher Shannon index of bacterial community observed in August for the introduced straight type compared to the straight type, no statistically significant differences were found in other indices between the two types (Figure 2).…”

Section: Influence Of Micro-ecological Factors On the Adaptation Of D...mentioning

confidence: 92%

Rhizosphere Microbe Affects Soil Available Nitrogen and Its Implication for the Ecological Adaptability and Rapid Growth of Dendrocalamus sinicus, the Strongest Bamboo in the World

Dou,

Cheng,

Liang

et al. 2023

IJMS

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The interaction between soil microbes and plants has a significant effect on soil microbial structure and function, as well as plant adaptability. However, the effect of soil micro-organisms on ecological adaption and rapid growth of woody bamboos remains unclear. Here, 16S rRNA and ITS rRNA genes of rhizosphere micro-organisms were sequenced, and the soil properties of three different types of Dendrocalamus sinicus were determined at the dormancy and germination stages of rhizome buds. The result showed that each type of D. sinicus preferred to absorb ammonia nitrogen (NH4+-N) rather than nitrate nitrogen (NO3−-N) and required more NH4+-N at germination or rapid growth period than during the dormancy period. In total, nitrogen fixation capacity of soil bacteria in the straight type was significantly higher than that in the introduced straight type, while the ureolysis capacity had an opposite trend. Saprophytic fungi were the dominant fungal functional taxa in habitat soils of both straight and introduced straight type. Our findings are of great significance in understanding how soil microbes affect growth and adaptation of woody bamboos, but also for soil management of bamboo forests in red soil.

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Higher ammonium-to-nitrate ratio shapes distinct soil nitrifying community and favors the growth of Moso bamboo in contrast to broadleaf tree species

Cited by 25 publications

References 59 publications

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Biochar and organic substitution improved net ecosystem economic benefit in intensive vegetable production

Responses of Rhizosphere and Root Surface Bacterial Communities and biomass of Cunninghamia lanceolata and Schima superba Seedlings to Nitrogen Forms

Rhizosphere Microbe Affects Soil Available Nitrogen and Its Implication for the Ecological Adaptability and Rapid Growth of Dendrocalamus sinicus, the Strongest Bamboo in the World

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