scholarly journals Tillage practices and residue management manipulate soil bacterial and fungal assembly and co-occurrence network patterns in maize agroecosystem

2020 ◽  
Author(s):  
Wei Yang ◽  
Yupeng Guan ◽  
Cheng Zhai ◽  
Lin Du ◽  
Yanxiang Wu ◽  
...  
Keyword(s):  
Residue Management ◽  
Tillage Practices ◽  
Soil Bacterial ◽  
Network Patterns

Abstract The authors have withdrawn this preprint due to author disagreement.

scholarly journals Tillage practices and residue management manipulate soil bacterial and fungal assembly and co-occurrence network patterns in maize agroecosystem

2020 ◽  
Author(s):  
Wei Yang ◽  
Yupeng Guan ◽  
Cheng Zhai ◽  
Lin Du ◽  
Yanxiang Wu ◽  
...  
Keyword(s):  
Soil Microbial Communities ◽  
Residue Management ◽  
Fungal Communities ◽  
No Tillage ◽  
Deep Tillage ◽  
Soil Microbial ◽  
Tillage Practices ◽  
Soil Bacterial ◽  
Network Patterns ◽  
Residue Retention

Abstract Background: Tillage practices and residue management are highly important agricultural practices. However, very few studies have examined the influence of tillage practices and residue management on both bacterial and fungal communities and network patterns in consecutive years. Results: We examined the effects of different tillage practices, including no tillage, rotary tillage, and deep tillage, on the soil bacterial and fungal communities and co-occurrence networks following residue removal and residue retention in 2017 and 2018. This study showed that both bacterial and fungal communities were unaffected by tillage practices in 2017, but they were significantly influenced in 2018. In addition, soil fungal operational taxonomic unit (OTU) richness was significantly enhanced by deep tillage compared with no tillage in 2018, while bacterial OTU richness was unaffected in either year. Tillage practices had differing effects on the soil microbial network patterns, with rotary and deep tillage increasing the complexity of bacterial networks but simplifying fungal networks. However, residue retention only induced a shift in the fungal community in 2018 without an obvious effect in the bacterial community in both years. In addition, residue retention simplified soil bacterial and fungal networks in 2018. Conclusions: This study highlighted the dissimilar responses of bacterial and fungal networks to tillage practices and emphasized that tillage practice is more important than residue management in shaping soil microbial communities.

scholarly journals Effect of Tillage, Residue Management and Cropping System on the Properties of Soil

2018 ◽  
Vol 6 (2) ◽  
pp. 164-168 ◽  
Author(s):  
Bibek Thapa ◽  
Keshab Raj Pande ◽  
Baburam Khanal ◽  
Santosh Marahatta
Keyword(s):  
Cropping System ◽  
Conservation Agriculture ◽  
Conventional Tillage ◽  
Residue Management ◽  
Zero Tillage ◽  
Tillage Practices ◽  
Residue Removal ◽  
Main Plot ◽  
Residue Retention

A field experiment was conducted to evaluate the effect of tillage practices, residue management and cropping system on soil properties at NMRP, Rampur, Chitwan from November 2015 to April 2016. The experiment was laid on Strip split design with combination of 12 different treatments i.e, zero tillage & conventional tillage as main plot in the strip, residue retention & residue removal as sub-plot factor and maize – wheat, maize + soybean – wheat & soybean – wheat cropping system as sub-sub plot factor. Three replications of the treatments were made. Soil sample before experiment and after harvest of wheat was taken (0-15cm). The experiment showed significant effect of zero tillage on organic carbon (2.169%) and on total soil nitrogen (0.112 %). Zero tillage with retention of residues is valuable tool for the conservation agriculture and helps in sustainability of soil however long-term research for the tillage management and residue retention should be conducted to highlight the major effects on change in properties of soil.Int. J. Appl. Sci. Biotechnol. Vol 6(2): 164-168 

In Situ Dynamics and Spatial Heterogeneity of Soil Bacterial Communities Under Different Crop Residue Management

2010 ◽  
Vol 60 (2) ◽  
pp. 291-303 ◽  
Author(s):  
Noémie Pascault ◽  
Bernard Nicolardot ◽  
Fabiola Bastian ◽  
Pascal Thiébeau ◽  
Lionel Ranjard ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Bacterial Communities ◽  
Crop Residue ◽  
Residue Management ◽  
Crop Residue Management ◽  
Soil Bacterial Communities ◽  
Soil Bacterial

Influence of Fusarium virguliforme Temporal Colonization of Corn, Tillage, and Residue Management on Soybean Sudden Death Syndrome and Soybean Yield

Plant Disease ◽  
2021 ◽  
Author(s):  
Amy M Baetsen-Young ◽  
Grazieli Araldi Da Silva ◽  
Yuba Raj Kandel ◽  
Janette L Jacobs ◽  
Adam M Byrne ◽  
...  
Keyword(s):  
Root Colonization ◽  
Temporal Dynamics ◽  
Residue Management ◽  
Weather Factors ◽  
Fusarium Virguliforme ◽  
Time Points ◽  
Tillage Practices ◽  
Foliar Symptoms ◽  
Corn Residue ◽  
Soybean Roots

The asymptomatic host range of Fusarium virguliforme includes corn, a common crop rotated with soybean that we hypothesize may alter F. virguliforme population dynamics and disease management. A field-based approach explored the temporal dynamics of F. virguliforme colonization of corn and soybean roots under different tillage and residue managements. Experiments were conducted in IA, IN, MI, WI, and Ontario, Canada from 2016 to 2018. Corn and soybean roots were sampled at consecutive time points between 1 and 16 weeks after planting (WAP). DNA was extracted from all roots and analyzed by real-time qPCR for F. virguliforme quantification. Trials were rotated between corn and soybean, containing a two x two factorial of tillage (no-tilled or tilled) and corn residue (with or without) in several experimental designs. In 2016, low (ca. 100 fg/10 mg root tissue) F. virguliforme was detected in the inoculated IA, IN and MI locations, and non-inoculated WI corn fields. However, in 2017 greater levels of F. virguliforme DNA were detected in IA, IN and MI across sampling time points. Tillage practices showed inconsistent effects on F. virguliforme root colonization and SDS foliar symptoms among trials and locations. Yet, residue management did not alter root colonization of corn or soybean by F. virguliforme. Plots with corn residue had greater SDS foliar disease index in Iowa in 2016. However, this trend was not observed across the site-years, indicating corn residue may occasionally increase SDS foliar symptoms depending on the disease level, soil and weather factors.

Impact of tillage practices on soil bacterial diversity and composition under the tobacco-rice rotation in China

2017 ◽  
Vol 55 (5) ◽  
pp. 349-356 ◽  
Author(s):  
Yanping Lei ◽  
Yongliang Xiao ◽  
Lifeng Li ◽  
Chaoqiang Jiang ◽  
Chaolong Zu ◽  
...  
Keyword(s):  
Bacterial Diversity ◽  
Soil Bacterial Diversity ◽  
Tillage Practices ◽  
Soil Bacterial

Biosolids and Tillage Practices Influence Soil Bacterial Communities in Dryland Wheat

2019 ◽  
Vol 78 (3) ◽  
pp. 737-752 ◽  
Author(s):  
Daniel C. Schlatter ◽  
Narayan C. Paul ◽  
Devendra H. Shah ◽  
William F. Schillinger ◽  
Andy I. Bary ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Tillage Practices ◽  
Soil Bacterial Communities ◽  
Soil Bacterial

Legume and gramineous crop residues stimulate distinct soil bacterial populations during early decomposition stages

2010 ◽  
Vol 90 (2) ◽  
pp. 289-293 ◽  
Author(s):  
M. Diouf ◽  
E. Baudoin ◽  
L. Dieng ◽  
K. Assigbetsé ◽  
A. Brauman
Keyword(s):  
Bacterial Community ◽  
Crop Residue ◽  
Crop Residues ◽  
Residue Management ◽  
Bacterial Populations ◽  
Soil C ◽  
C Cycle ◽  
Total Bacterial Community ◽  
Soil Bacterial ◽  
Selection Of

This study characterized the genetic structure of the active soil bacterial populations involved in the decomposition of maize and soybean residues over 3 d. Significant compositional differences between the total bacterial community and its active component were observed that were residue specific, suggesting that residue management should be further evaluated as a driver of soil C cycle through selection of bacterial populations.Key words: 16S rRNA DGGE, active bacterial community, organic matter, crop residue

scholarly journals Conservation tillage regulates soil bacterial community assemblies, network structures and ecological functions in black soils

2021 ◽  
Author(s):  
Zhuxiu Liu ◽  
Haidong Gu ◽  
Aizhen Liang ◽  
Lujun Li ◽  
Qin Yao ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Soil Carbon ◽  
High Throughput Sequencing ◽  
Conservation Tillage ◽  
Conventional Tillage ◽  
Soil Bacterial Community ◽  
Community Structures ◽  
Tillage Practices ◽  
Degrading Bacteria ◽  
Soil Bacterial

Abstract Aims Conventional tillage is a serious threat to the stability of soil ecosystems. Understanding the response mechanisms of soil microbial community assemblies to anthropogenic activities is a major topic of ecological research. Methods Here, we investigated the bacterial community structures and assemblies in bulk and rhizosphere soils of soybeans grown with conventional tillage (moldboard plow, MP) and with conservation tillage that involved no-tillage (NT) or ridge tillage (RT) using high-throughput sequencing methods. Results We found that soil bacterial community compositions, structures and assembly processes were primarily altered by tillage practices. Briefly, in comparison to MP, NT and RT increased the relative abundances of the nitrogen-fixing bacteria Mesorhizobium sp., Bradyrhizobium sp. and Burkholderia sp., but decreased the abundance of soil carbon-degrading bacteria, especially Blastococcus sp., Streptomyces sp. and Sphingomonas sp. In addition, in comparison to MP, NT and RT resulted in more stable bacterial networks and more lower the relative contribution of homogenizing dispersal. Soil pH was the primary soil factor regulating both the bacterial community structures and assembly processes under the three tillage practices. Conclusions The altered functional bacteria under conservation tillage was mostly affiliated with biomarkers and keystone taxa, inferring that conservation tillage might contribute to biological nitrogen fixation and soil carbon sequestration.

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