Effects of organic substitution for synthetic N fertilizer on soil bacterial diversity and community composition: A 10-year field trial in a tea plantation

Ji, Lingfei; Wu, Zhidan; You, Zhang; Yi, Xiaoyun; Ni, Kang; Guo, Shiwei; Ruan, Jianyun

doi:10.1016/j.agee.2018.09.008

Cited by 110 publications

(58 citation statements)

References 56 publications

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“…The combination application of inorganic and organic fertilizer (MF, W2MF, and W4MF) was proven to significantly increase soil microbial diversity and shift their composition (Ding et al, 2016). Ji et al (2018) found that added N‐P‐K plus organic fertilizer into the tea planted agricultural soil induced significant bacterial community structure and composition shifts, and increased bacterial diversity. The relative abundance of Thaumarchaeota , Planctomycetes , and Cyanobacteria increased following N‐P‐K plus organic fertilizer addition (Ji et al, 2018), which corresponded to the RDA results (Fig.…”

Section: Discussionmentioning

confidence: 98%

“…Ji et al (2018) found that added N‐P‐K plus organic fertilizer into the tea planted agricultural soil induced significant bacterial community structure and composition shifts, and increased bacterial diversity. The relative abundance of Thaumarchaeota , Planctomycetes , and Cyanobacteria increased following N‐P‐K plus organic fertilizer addition (Ji et al, 2018), which corresponded to the RDA results (Fig. 4a).…”

Section: Discussionmentioning

confidence: 98%

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Soil Microbial Community Structure Shifts Induced by Biochar and Biochar‐Based Fertilizer Amendment to Karst Calcareous Soil

Zhou

Ting

Zwieten

et al. 2019

Soil Science Soc of Amer J

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Biochar‐based fertilizer treatments induced significant microbial community structure shifts compared with no‐biochar and biochar alone. Biochar‐based fertilizer especially at higher biochar addition rate increased soil microbial biomass and fertility. Soil microbial species were strongly correlated with soil nutrients under biochar and biochar‐based fertilizer into karst soil. Karst ecosystems are vulnerable to degradation and constitute a significant proportion of southwestern China. Here, we explore the amendment of these soils with wood biochar in combination with N‐P‐K fertilizer and swine manure compost with the goal of improving microbial community structure and soil nutrient status of these soils. A pot experiment with six treatments, including control (CK, no amendment), swine manure compost plus N‐P‐K fertilizer (MF), wood biochar at 2% in soil (W2), wood biochar at 4% in soil (W4), wood biochar‐based fertilizer at 2% in soil (W2MF), and biochar‐based fertilizer at 4% in soil (W4MF), was set up for 20 months. The results showed that soil organic matter and soil available nutrients N, P, and K in W4MF increased by 63.95, 66.23, 284.96, and 94.56%, respectively, compared with CK. Soil microbial biomass C, N, and P increased in sequence by 60.05, 87.64, and 307.85%, respectively. Soil bacterial and fungal diversity indices (Simpson and Shannon) and richness index (Chao1) were generally higher in biochar‐based fertilizer treatments (W2MF and W4MF) than biochar alone (W2 and W4). The bacterial and fungal community structures of biochar based fertilizer treatments differed from those of biochar amendment alone or control (P < 0.05). Linear discriminant (Effect Size) analysis showed that the bacterial biomarkers of the W2MF + W4MF group were mainly the phylum Acidobacteria and class Alphaproteobacteria, and the fungal biomarkers were the phylum Rozellomycota and Glomeromycota. Redundancy analysis revealed strong relationships between microbial community structure and soil organic matter and soil available nutrients N, P, and K (P < 0.05). In conclusion, either sole biochar or biochar‐based fertilizer amendment improved karst soil nutrient conditions and induced microbial community structural shifts. The performance was better in biochar‐based fertilizer treatment than that in biochar addition alone.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

Soil Microbial Community Structure Shifts Induced by Biochar and Biochar‐Based Fertilizer Amendment to Karst Calcareous Soil

Zhou

Ting

Zwieten

et al. 2019

Soil Science Soc of Amer J

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“…A great deal of investigations on the use of organic amendments [41,49,50,82,[95][96][97][98][99][100][101][102][103][104][105] reported increases in soil microbial activity and biomass, as well as changes in microbial community composition (with potential concomitant effects on soil functioning) and, to a lesser extent, in microbial diversity. In this sense, a 10-year field experiment was conducted [106] to study the effects of replacing a mineral nitrogen fertilizer by an organic amendment (fermented pig manure), at different substitution ratios (0, 25, 50, 75, and 100%), on agricultural soil properties. Interestingly, the authors [106] reported an increase in soil bacterial diversity at increasing ratios of chemical fertilizer substitution.…”

Section: Beneficial Effects Of Organic Amendmentsmentioning

confidence: 99%

“…In this sense, a 10-year field experiment was conducted [106] to study the effects of replacing a mineral nitrogen fertilizer by an organic amendment (fermented pig manure), at different substitution ratios (0, 25, 50, 75, and 100%), on agricultural soil properties. Interestingly, the authors [106] reported an increase in soil bacterial diversity at increasing ratios of chemical fertilizer substitution. In another study [107], the long-term effects of organic versus conventional fertilization on soil microbial communities were investigated, finding out that the former modulated microbial community composition while increasing microbial richness and diversity.…”

Section: Beneficial Effects Of Organic Amendmentsmentioning

confidence: 99%

“…Notably, changes in soil microbial structural and functional diversity were reported after the incorporation of a wide variety of organic amendments, including crop residues [113,114], manures [110,115], biosolids [103,116], composted waste [112,117], and digestates [106,118]. These changes were identified through the utilization of different techniques: community-level physiological profiling [64,115,119], phospholipid fatty-acid analysis [89,100,115], Sanger sequencing [109], and next-generation sequencing [64,111,117,120].…”

Section: Beneficial Effects Of Organic Amendmentsmentioning

confidence: 99%

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Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture

2019

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The use of organic amendments in agriculture is a common practice due to their potential to increase crop productivity and enhance soil health. Indeed, organic amendments of different origin and composition (e.g., animal slurry, manure, compost, sewage sludge, etc.) can supply valuable nutrients to the soil, as well as increase its organic matter content, with concomitant benefits for soil health. However, the application of organic amendments to agricultural soil entails a variety of risks for environmental and human health. Organic amendments often contain a range of pollutants, including heavy metals, persistent organic pollutants, potential human pathogens, and emerging pollutants. Regarding emerging pollutants, the presence of antibiotic residues, antibiotic-resistant bacteria, and antibiotic-resistance genes in agricultural amendments is currently a matter of much concern, due to the concomitant risks for human health. Similarly, currently, the introduction of microplastics to agricultural soil, via the application of organic amendments (mainly, sewage sludge), is a topic of much relevance, owing to its magnitude and potential adverse effects for environmental health. There is, currently, much interest in the development of efficient strategies to mitigate the risks associated to the application of organic amendments to agricultural soil, while benefiting from their numerous advantages.

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Keystone predatory protists are associated closely with ammonia‐oxidizing microorganisms in an acidic Ultisol

Lin,

Ye,

et al. 2023

J of Sust Agri & Env

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Predatory protists are widely recognized as critical biotic forces driving soil microbial communities, but their top‐down controls on ammonia‐oxidizing microorganisms (AOMs), the major players in nitrification, are largely unresolved. Here, we investigated the communities of predatory protists and their associations with AOMs using high‐throughput sequencing and network analysis in soil aggregates following various long‐term organic substitutions. We found that organic substitutions increased while soil aggregation decreased the alpha diversity of predatory protists. Predatory protistan communities were significantly associated with AOMs. Variosea, an important group of Amoebozoa, were the keystone predatory protists associated with the AOMs. Collectively, our findings highlight the importance of predatory protists, especially Variosea, in regulating the communities of AOMs in an acidic Ultsisol, with implications for managing nitrification by predatory protists in agricultural soils.

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Effects of organic substitution for synthetic N fertilizer on soil bacterial diversity and community composition: A 10-year field trial in a tea plantation

Cited by 110 publications

References 56 publications

Soil Microbial Community Structure Shifts Induced by Biochar and Biochar‐Based Fertilizer Amendment to Karst Calcareous Soil

Soil Microbial Community Structure Shifts Induced by Biochar and Biochar‐Based Fertilizer Amendment to Karst Calcareous Soil

Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture

Keystone predatory protists are associated closely with ammonia‐oxidizing microorganisms in an acidic Ultisol

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