The Experts below are selected from a list of 37815 Experts worldwide ranked by ideXlab platform
Nils Hogberg - One of the best experts on this subject based on the ideXlab platform.
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different Crop Rotation systems as drivers of change in soil bacterial community structure and yield of rice oryza sativa
Biology and Fertility of Soils, 2012Co-Authors: Do Thi Xuan, Vo Thi Guong, Anna Rosling, Sadhna Alstrom, Benli Chai, Nils HogbergAbstract:Intensive Cropping, especially of rice, is considered to contribute to negative effects not only on soil chemical and biological properties but also on long-term grain yield. Appropriate Crop Rotation is often practiced as an alternative strategy to overcome the negative side effects of intensive Cropping. Although soil microbial diversity and community structure have been shown to respond differently to altered agricultural management practices, little is known about possible links between Crop Rotation and grain yield on bacterial communities in rice paddy soil. In this study, we investigated the impact of specific Rotational Crops and compared it with intensive rice cultivation. The main Crop rice (Oryza sativa) was rotated with maize (Zea mays) and mungbean (Phaseolus aureus) in different combinations in a system cultivating three Crops per year. Soil bacterial communities were studied in two different Cropping periods using pyrosequencing of the variable V4 region of the 16S rRNA. Our results showed that Rotation with alternative Crops increased rice yield by 24–46% depending on Rotation structure and that bacterial community structure was altered in the presence of mungbean and/or maize compared to that in rice monoculture. In the Crop Rotation systems, composition, abundance, and diversity of soil bacterial communities were significantly different and higher than those in rice monoculture. Our results show that effects of Crop Rotation relate to changes in soil bacterial community structure suggesting that appropriate Crop Rotations provide a feasible practice to maintain the equilibrium in soil microbial environment for sustainable rice cultivation.
Do Thi Xuan - One of the best experts on this subject based on the ideXlab platform.
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different Crop Rotation systems as drivers of change in soil bacterial community structure and yield of rice oryza sativa
Biology and Fertility of Soils, 2012Co-Authors: Do Thi Xuan, Vo Thi Guong, Anna Rosling, Sadhna Alstrom, Benli Chai, Nils HogbergAbstract:Intensive Cropping, especially of rice, is considered to contribute to negative effects not only on soil chemical and biological properties but also on long-term grain yield. Appropriate Crop Rotation is often practiced as an alternative strategy to overcome the negative side effects of intensive Cropping. Although soil microbial diversity and community structure have been shown to respond differently to altered agricultural management practices, little is known about possible links between Crop Rotation and grain yield on bacterial communities in rice paddy soil. In this study, we investigated the impact of specific Rotational Crops and compared it with intensive rice cultivation. The main Crop rice (Oryza sativa) was rotated with maize (Zea mays) and mungbean (Phaseolus aureus) in different combinations in a system cultivating three Crops per year. Soil bacterial communities were studied in two different Cropping periods using pyrosequencing of the variable V4 region of the 16S rRNA. Our results showed that Rotation with alternative Crops increased rice yield by 24–46% depending on Rotation structure and that bacterial community structure was altered in the presence of mungbean and/or maize compared to that in rice monoculture. In the Crop Rotation systems, composition, abundance, and diversity of soil bacterial communities were significantly different and higher than those in rice monoculture. Our results show that effects of Crop Rotation relate to changes in soil bacterial community structure suggesting that appropriate Crop Rotations provide a feasible practice to maintain the equilibrium in soil microbial environment for sustainable rice cultivation.
Chunjie Tian - One of the best experts on this subject based on the ideXlab platform.
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short term effect of tillage and Crop Rotation on microbial community structure and enzyme activities of a clay loam soil
Biology and Fertility of Soils, 2014Co-Authors: Bin Zhang, Yuanjing Li, Zhengchao Tian, Guiman Wang, Xingyuan He, Chunjie TianAbstract:A field study was carried out to analyze the short-term (2 years) effect of tillage and Crop Rotation on microbial community structure and enzyme activities of a clay loam soil. The experimental design was a split-plot arrangement of treatments, consisting of two tillage treatments—ridge tillage (RT) and no-tillage (NT)—in combination with two Crop Rotation treatments—corn (Zea mays L.) monoculture and a 2-year corn-soybean (Glycine max L.) Rotation. Phospholipid fatty acid (PLFA) profiles were used to assess soil microbial community structure. No-tillage resulted in significantly higher total PLFAs compared to the RT treatment, which was accompanied by higher activities of protease, β-glucosaminidase, and β-glucosidase. This suggests a close link between soil microbial communities and enzyme activities in response to tillage. The increase of total microbial lipid biomass in the NT soils was due to the increase in both fungal and bacterial PLFAs. Crop Rotation had little effect on soil bacterial communities and enzyme activities, but it significantly influenced soil fungal communities, particularly arbuscular mycorrhizal fungi. Soils under monoculture corn had higher fungal biomass than soils under corn-soybean Rotation regardless of tillage treatment.
Angela D Kent - One of the best experts on this subject based on the ideXlab platform.
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long term fertilizer and Crop Rotation treatments differentially affect soil bacterial community structure
Plant and Soil, 2017Co-Authors: Chinmay Soman, Dongfang Li, Michelle M Wander, Angela D KentAbstract:Background and aims Soil microbial communities influence nutrient cycling, chemistry and structure of soil, and plant productivity. In turn, agronomic practices such as fertilization and Crop Rotation alter soil physical and chemical properties and consequently soil microbiomes. Understanding the long-term effects of agronomic practices on soil microbiomes is essential for improving agronomic practices to optimize these microbial communities for agricultural sustainability. We examine the composition and substrate-utilization profiles of microbial communities at the Morrow Plots in Illinois.
Vo Thi Guong - One of the best experts on this subject based on the ideXlab platform.
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different Crop Rotation systems as drivers of change in soil bacterial community structure and yield of rice oryza sativa
Biology and Fertility of Soils, 2012Co-Authors: Do Thi Xuan, Vo Thi Guong, Anna Rosling, Sadhna Alstrom, Benli Chai, Nils HogbergAbstract:Intensive Cropping, especially of rice, is considered to contribute to negative effects not only on soil chemical and biological properties but also on long-term grain yield. Appropriate Crop Rotation is often practiced as an alternative strategy to overcome the negative side effects of intensive Cropping. Although soil microbial diversity and community structure have been shown to respond differently to altered agricultural management practices, little is known about possible links between Crop Rotation and grain yield on bacterial communities in rice paddy soil. In this study, we investigated the impact of specific Rotational Crops and compared it with intensive rice cultivation. The main Crop rice (Oryza sativa) was rotated with maize (Zea mays) and mungbean (Phaseolus aureus) in different combinations in a system cultivating three Crops per year. Soil bacterial communities were studied in two different Cropping periods using pyrosequencing of the variable V4 region of the 16S rRNA. Our results showed that Rotation with alternative Crops increased rice yield by 24–46% depending on Rotation structure and that bacterial community structure was altered in the presence of mungbean and/or maize compared to that in rice monoculture. In the Crop Rotation systems, composition, abundance, and diversity of soil bacterial communities were significantly different and higher than those in rice monoculture. Our results show that effects of Crop Rotation relate to changes in soil bacterial community structure suggesting that appropriate Crop Rotations provide a feasible practice to maintain the equilibrium in soil microbial environment for sustainable rice cultivation.