Effect of crop management and sample year on abundance of soil bacterial communities in organic and conventional cropping systems

2015 ◽  
Vol 119 (1) ◽  
pp. 208-214 ◽  
Author(s):  
C.H. Orr ◽  
C.J. Stewart ◽  
C. Leifert ◽  
J.M. Cooper ◽  
S.P. Cummings
Keyword(s):  
Bacterial Communities ◽  
Cropping Systems ◽  
Crop Management ◽  
Soil Bacterial Communities ◽  
Soil Bacterial

scholarly journals Soil bacterial communities in three rice-based cropping systems differing in productivity

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Min Huang ◽  
Alin Tian ◽  
Jiana Chen ◽  
Fangbo Cao ◽  
Yumei Chen ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Cropping Systems ◽  
Soil Bacterial Communities ◽  
Soil Bacterial

scholarly journals Effect of Long-Term Cropping Systems on the Diversity of the Soil Bacterial Communities

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 878 ◽  
Author(s):  
Zoltán Mayer ◽  
Zita Sasvári ◽  
Viktor Szentpéteri ◽  
Beatrix Pethőné Rétháti ◽  
Balázs Vajna ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Cropping Systems ◽  
Sustainable Use ◽  
Soil Microbial Communities ◽  
Principal Component ◽  
Crop Rotations ◽  
Soil Bacterial Diversity ◽  
Soil Biodiversity ◽  
Soil Bacterial Communities ◽  
Soil Bacterial

Soil microbial communities are involved in the maintenance of productivity and health of agricultural systems; therefore an adequate understanding of soil biodiversity plays a key role in ensuring sustainable use of soil. In the present study, we evaluated the influence of different cropping systems on the biodiversity of the soil bacterial communities, based on a 54-year field experiment established in Martonvásár, Hungary. Terminal restriction fragment length polymorphism (T-RFLP) fingerprinting technique was used to assess soil bacterial diversity and community structure in maize monoculture and three different crop rotations (maize–alfalfa, maize–wheat and the maize–barley–peas–wheat Norfolk type). No differences in richness and diversity were detected between maize monoculture and crop rotations except for the most intense rotation system (Norfolk-type). Although the principal component analysis did not reveal a clear separation between maize monoculture and the other rotation systems, the pairwise tests of analysis of similarity (ANOSIM) revealed that there are significant differences in the composition of bacterial communities between the maize monoculture and maize–alfalfa rotation as well as between wheat–maize and Norfolk-type rotation.

scholarly journals Dryland cropping system, weed communities, and disease status modulate the effect of climate conditions on wheat soil bacterial communities.

2020 ◽  
Author(s):  
Suzanne Lynn Ishaq ◽  
Tim Seipel ◽  
Carl Yeoman ◽  
Fabian D Menalled
Keyword(s):  
Soil Temperature ◽  
Bacterial Communities ◽  
Cropping Systems ◽  
Cropping System ◽  
Disease Status ◽  
Climate Conditions ◽  
Soil Bacterial Communities ◽  
Bacterial Richness ◽  
Soil Bacterial ◽  
The Impact

Little knowledge exists on whether soil bacteria are impacted by cropping systems and disease status in current and predicted climate scenarios. We assessed the impact of soil moisture and temperature, weed communities, and disease status on soil bacterial communities across three cropping systems: conventional no-till (CNT) utilizing synthetic pesticides and herbicides, 2) USDA-certified tilled organic (OT), and 3) USDA-certified organic with sheep grazing (OG). Sampling date within the growing season, and associated soil temperature and moisture, exerted the greatest effect on bacterial communities, followed by cropping system, Wheat streak mosaic virus (WSMV) infection status, and weed community. Soil temperature was negatively associated with bacterial richness and evenness, while soil moisture was positively associated with bacterial richness and evenness. Both soil temperature and moisture altered soil bacterial community similarity. Inoculation with WSMV altered community similarity, and there was a date x virus interaction on bacterial richness in CNT and OT systems, as well as an interaction between WSMV x climate. In May and July, cropping system altered the effect of climate change on the bacterial community composition in hotter, and hotter and drier conditions not treated with WSMV, as compared to ambient conditions. In areas treated with WSMV, there were interactions between cropping system, sampling date, and climate conditions, indicating the effect of multiple stressors on bacterial communities in soil. Overall, this study indicates that predicted climate modifications as well as biological stressors play a fundamental role in the impact of cropping systems on soil bacterial communities.

scholarly journals Dryland Cropping Systems, Weed Communities, and Disease Status Modulate the Effect of Climate Conditions on Wheat Soil Bacterial Communities

mSphere ◽  
2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Suzanne L. Ishaq ◽  
Tim Seipel ◽  
Carl Yeoman ◽  
Fabian D. Menalled
Keyword(s):  
Climate Change ◽  
Soil Moisture ◽  
Soil Temperature ◽  
Bacterial Communities ◽  
Cropping Systems ◽  
Cropping System ◽  
Disease Status ◽  
Soil Bacterial Communities ◽  
Weed Communities ◽  
Soil Bacterial

ABSTRACT Little knowledge exists on how soil bacteria in agricultural settings are impacted by management practices and environmental conditions in current and predicted climate scenarios. We assessed the impact of soil moisture, soil temperature, weed communities, and disease status on soil bacterial communities in three cropping systems: (i) conventional no-till (CNT) systems utilizing synthetic pesticides and herbicides, (ii) USDA-certified tilled organic (OT) systems, and (iii) USDA-certified organic systems with sheep grazing (OG). Sampling date within the growing season and associated soil temperature and moisture exerted the greatest effect on bacterial communities, followed by cropping system, Wheat streak mosaic virus (WSMV) infection status, and weed community. Soil temperature was negatively correlated with bacterial richness and evenness, while soil moisture was positively correlated with bacterial richness and evenness. Soil temperature and soil moisture independently altered soil bacterial community similarity between treatments. Inoculation of wheat with WSMV altered the associated soil bacteria, and there were interactions between disease status and cropping system, sampling date, and climate conditions, indicating the effect of multiple stressors on bacterial communities in soil. In May and July, cropping system altered the effect of climate change on the bacterial community composition in hotter conditions and in hotter and drier conditions compared to ambient conditions, in samples not treated with WSMV. Overall, this study indicates that predicted climate modifications as well as biological stressors play a fundamental role in the impact of cropping systems on soil bacterial communities. IMPORTANCE Climate change is affecting global moisture and temperature patterns, and its impacts are predicted to worsen over time, posing progressively larger threats to food production. In the Northern Great Plains of the United States, climate change is forecast to increase temperature and decrease precipitation during the summer, and it is expected to negatively affect cereal crop production and pest management. In this study, temperature, soil moisture, weed communities, and disease status had interactive effects with cropping system on bacterial communities. As local climates continue to shift, the dynamics of above- and belowground associated biodiversity will also shift, which will impact food production and increase the need for more sustainable practices.

scholarly journals Structure and Diversity of Soil Bacterial Communities in Offshore Islands

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yu-Te Lin ◽  
Yu-Fei Lin ◽  
Isheng J. Tsai ◽  
Ed-Haun Chang ◽  
Shih-Hao Jien ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Soil Bacterial Communities ◽  
Soil Bacterial

Effects of long-term biochar and biochar-based fertilizer application on brown earth soil bacterial communities

2021 ◽  
Vol 309 ◽  
pp. 107285
Author(s):  
Mengyu Gao ◽  
Jinfeng Yang ◽  
Chunmei Liu ◽  
Bowen Gu ◽  
Meng Han ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Fertilizer Application ◽  
Soil Bacterial Communities ◽  
Soil Bacterial
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