Soil texture and properties rather than irrigation water type shape the diversity and composition of soil microbial communities

Obayomi, Olabiyi; Seyoum, Mitiku Mihiret; Ghazaryan, Lusine; Tebbe, Christoph C.; Murase, Jun; Bernstein, Nirit; Gillor, Osnat

doi:10.1016/j.apsoil.2020.103834

Cited by 29 publications

(15 citation statements)

References 72 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%

“…The results of our analysis indicated that soil bacterial community structure and composition were greatly influenced by soil texture and N fertilisation. Bacterial community richness and diversity were much higher in sandy loam and loam soils than in clay loam soil, a finding consistent with the results of previous research 39 , 40 . This divergence in bacterial communities among soil types could be due to differences in soil nutrient availability and particle size fractions 41 .…”

Section: Discussionsupporting

confidence: 92%

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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%

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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“…Although the literature on dill is scarce, past reports on beans and anise (Hassan, Abou Elkasem, & El-kassas, 2021), sugar beet (Heidarian et al, 2018) and oregano (Gerami et al, 2016) have reported the influence of soil type and texture on the soil microbial diversity (Obayomi et al, 2021). Surprisingly, MR Control yielded better results (although not statistically significant) in all the agronomic parameters except for FDR compared to other treatments.…”

Section: Effect Of Irrigation Interval Manure Rate and Their Interact...mentioning

confidence: 84%

Effect of Irrigation Intervals and Manure Rates on Agronomic Parameters of Dill at Different Agro-ecological Zones of Bhutan

Rabgyal

Biswab

Lepcha

et al. 2022

BJA

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The effect of different irrigation intervals and manure rates on agronomic parameters of dill were evaluated under three agro-ecological zones of Bhutan: ARDC-Bajo located at 1200 m asl, ARDC–Wengkhar at 1,700 m asl, and NCOA–Yusipang at 2700 m asl. The split-plot design arranged in randomized complete blocks with three replications was employed. The four levels of irrigation interval (control, every 3 days, every 7 days, and every 14 days) were allotted to main plots and four levels of manure (Control, 4 tons/acre, 8 tons/acre and 12 tons/acre) were allocated to subplots. The results showed that dill can be successfully grown in all agro-ecological zones under study. Fresh yield obtained at ARDC-Wengkhar (1.92 tons/acre) was significantly higher compared to that at NCOA-Yusipang (0.52 tons/acre) but not significant to that at ARDC-Bajo (1.41 tons/acre). Interaction of irrigation interval and manure rate significantly influenced plant height (P=0.02) and stem diameter (P=0.03) at NCOA–Yusipang, and stem per plant (P=0.02) at ARDC-Wengkhar. The irrigation interval of 3 days produced significantly better results except for the fresh to dry weight ratio at NCOA-Yusipang. Irrigation interval of 7 days yielded better results at ARDC-Bajo and ARDC-Wengkhar except for FDR at ARDC-Wengkhar. The increase in irrigation interval beyond 7 days resulted in 62% and 25% lower fresh yields at ARDC-Bajo and NCOA-Yusipang respectively. In contrast, irrigation at 3 days interval at ARDC–Wengkhar decreased the yield by 55% compared to 7 days interval. The manure treatments did not influence any of the parameters assessed at all sites. However, MR 8 tons/acre at NCOA–Yusipang, MR Control at ARDC-Wengkhar and MR 12 tons/acre at ARDC-Bajo yielded higher fresh yields compared to other manure treatments. We recommend the combined application of IR 7 days x MR 12 tons/acre, IR 7 days x MR 4 tons/acre, and IR 3 days x 8 tons/acre at ARDC–Bajo, ARDC-Wengkhar and NCOA–Yusipang respectively. Further, this research provides a reference guide for agricultural extensionists during promotional, advocacy and capacity development programs.

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“…Previous studies have shown that the SRAs biochar and HAP can act both directly on soil microorganisms (e.g., provide nutrients and habitats) and indirectly via changing soil physicochemical properties (particularly charosphere) and plant growth [ 8 , 30 , 31 , 40 , 41 , 42 ]. Soil bacterial communities vary with soil properties [ 43 ], especially pH [ 44 , 45 ]. For example, many studies supposed that Gemmatimonas [ 46 ], Saccharimonadales [ 47 ], and Bradyrhizobium [ 48 ] were negatively correlated with soil pH.…”

Section: Discussionmentioning

confidence: 99%

Remediation Agents Drive Bacterial Community in a Cd-Contaminated Soil

Cui

Liu

et al. 2023

Toxics

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Soil remediation agents (SRAs) such as biochar and hydroxyapatite (HAP) have shown a promising prospect in in situ soil remediation programs and safe crop production. However, the effects of SRAs on soil microbial communities still remain unclear, particularly under field conditions. Here, a field case study was conducted to compare the effects of biochar and HAP on soil bacterial communities in a slightly Cd-contaminated farmland grown with sweet sorghum of different planting densities. We found that both biochar and HAP decreased the diversity and richness of soil bacteria, but they differently altered bacterial community structure. Biochar decreased Chao1 (−7.3%), Observed_species (−8.6%), and Shannon indexes (−1.3%), and HAP caused Shannon (−2.0%) and Simpson indexes (−0.1%) to decline. The relative abundance (RA) of some specific taxa and marker species was differently changed by biochar and HAP. Overall, sweet sorghum cultivation did not significantly alter soil bacterial diversity and richness but caused changes in the RA of some taxa. Some significant correlations were observed between soil properties and bacterial abundance. In conclusion, soil remediation with biochar and HAP caused alterations in soil bacterial communities. Our findings help to understand the ecological impacts of SRAs in soil remediation programs.

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Soil texture and properties rather than irrigation water type shape the diversity and composition of soil microbial communities

Cited by 29 publications

References 72 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

Effect of Irrigation Intervals and Manure Rates on Agronomic Parameters of Dill at Different Agro-ecological Zones of Bhutan

Remediation Agents Drive Bacterial Community in a Cd-Contaminated Soil

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