Soil microbial communities under conventional-till and no-till continuous cotton systems

Feng, Yanfang; Motta, Antonio; Reeves, D. W.; Burmester, C. H.; Santen, E. van; Osborne, Jason A.

doi:10.1016/j.soilbio.2003.08.016

Cited by 248 publications

(124 citation statements)

References 28 publications

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“…The population and diversity of selective fungal communities are linked to soil sickness and are associated with continuous obstacles of cucumber cultivation [71]. Our results from this investigation were consistent with previous studies showing that the specific microbiota composition changed within different microenvironments in the soil matrix [72]. However, the degree of variation in the taxonomic community composition and fungal richness as influenced by different crop rotation systems in protected vegetable cultivation conditions are poorly understood.…”

Section: The Dynamics Of a Three-year Green Garlic/cucumber Crop Rotasupporting

confidence: 88%

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

2018

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Abstract:A decreased soil biological environment in terms of an unstable microbial population and diversity index is primarily caused by intensive continuous cropping systems. In this study, a crop rotation system was established to evaluate the soil fungal diversity using a pyrosequencing-based analysis during three successive growing seasons (2013, 2014, and 2015) under a field pot investigation. We found that overall green garlic/cucumber rotational effects increased cucumber productivity under these growing practices. Analysis of fungal communities in rhizosphere soils by high-throughput pyrosequencing showed that the estimated treatment effects were more obvious during the three-year trials, and OTU richness was much higher than the control in cucumber-planted soils. The relative frequencies of fungal diversity showed variable responses before and after rotation practices, and mainly α-diversity of fungi increased in garlic planted soil and again decreased after cucumber planted soil in each year. The phylogenetic classification illustrated that the fungal communities were dominated by the taxa Ascomycota, Basidiomycota, Chytridiomycota, Glomeromycota, and Zygomycota across all samples. Particularly, the relative abundance of the taxon Ascomycota was largely and predominantly enriched with the increasing number of garlic bulbs during the three years. Moreover, the majority of abundant taxa positively correlated with available P and K contents, while being highly negatively correlated with soil pH, EC, and SOC. These results indicate that garlic-cucumber-based crop rotations induce fungal richness and diversity and promote the sustainability of agricultural ecosystems, thus enhancing crop growth and production.

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Section: The Dynamics Of a Three-year Green Garlic/cucumber Crop Rotasupporting

confidence: 88%

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

2018

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“…Soil microbial community structure is affected by many agricultural practices (Olsson and Alström 2000, Feng et al 2003, Sun et al 2004, Dilly et al 2004). In our study, the microbial biomass of the 0-10 cm soil depth in the bare fallow treatment was significantly lower than that in the treatments of restoration and cropping; the Shannon's diversity index (H) and substrate richness (S) were similar, which suggests that the changes in population and catabolic diversity of microbial community were not correlated (Tables 2 and 3).…”

Section: Discussionmentioning

confidence: 99%

Biomass and catabolic diversity of microbial communities with long-term restoration, bare fallow and cropping history in Chinese Mollisols

Wang¹,

Jin²,

Chen³

et al. 2007

PLANT SOIL ENVIRON

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Microbial biomass and community catabolic diversities at three depths (0-10 cm, 20-30 cm, and 40-50 cm) in Chinese Mollisols as influenced by long-term managements of natural restoration, cropping and bare fallow were investigated. Microbial biomass was estimated from chloroform fumigation-extraction and substrate-induced respiration (SIR), and catabolic diversity was determined by using Biolog® EcoPlate. Experimental results showed that microbial biomass significantly declined with soil depth in the treatments of restoration and cropping, and not in the treatment of bare fallow, where the microbial biomass had a positive relationship with the total soil C content. The inspections into the catabolic capability of the microbial community at the same soil depth showed that the treatment of natural restoration had a relatively stronger metabolic ability than the cropping and bare fallow treatments. Shannon's diversity index, substrate richness and substrate evenness calculated from the Biolog data were higher in the treatments of natural restoration and cropping than the bare fallow treatment with the same soil depth, and with the highest values in the top soil. Principal component analysis indicated that the catabolic profiles not only varied with the soil depth in each treatment, but also differed in the three treatments within the same soil depth. The catabolic profiles of the three treatments were similar to each other in the soil depth of 0-10 cm and distinctly different in the soil depths of 20-30 cm and 40-50 cm. These results suggest that it was microbial biomass rather than community function that was influenced by the different soil management in the topsoil (0-10 cm); in the relative depths, the soil microbial community function was more easily influenced than microbial biomass.

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“…The development of soil microbial biodiversity and its activity are directly influenced by soil acidification (Ba˚a˚th et al 1995;Lynch 1995;Bruns et al 1999), crop (Alvey et al 2003), tillage (Feng et al 2003), intercropping (Li et al 2003;Song et al 2007) and fertilization management (Bolton et al 1985). The physico-chemical environment of soil particles and the surrounding organic fraction are complex, and make it difficult to determine the actual pH experienced by microbial cells.…”

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confidence: 99%

Impact of natural or industrial liming materials on soil properties and microbial activity

Lalande¹,

Gagnon²,

Royer³

2009

Can. J. Soil. Sci.

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Lalande, R., Gagnon, B. and Royer, I. 2009. Impact of natural or industrial liming materials on soil properties and microbial activity. Can. J. Soil Sci. 89: 209Á222. Soil acidity is a major problem in agriculture because it limits plant growth and reduces crop productivity. The neutralizing potential of industrial by-products and their impact on soil properties were evaluated in two acidic soils characterized by contrasting textures, and submitted to intensive agriculture practices. Soil pH, microbial (dehydrogenase and alkaline phosphatase) activity, and Mehlich-3 extractable P, K, Ca and Mg were monitored in the year of soil incorporation of eight liming products and in the following 2 yr. In the sandy loam, liming products did not result in significant increases in soil pH in the 0-to 7.5-cm soil layer. Lime mud (LM) significantly increased soil pH by 0.4 units in the 7.5-to 20-cm layer compared with cement kiln dust (CKD). In the silty clay, calciumÁ phosphateÁmagnesium (CalPoMag) significantly raised pH by 0.65 units over both natural calcitic lime (NCa) and the magnesium dissolution product (MgD) in the first soil layer, and by 0.5 units over carbide lime (CL) treatment in the second soil layer. Activities of dehydrogenase and alkaline phosphatase were increased to various degrees by all liming materials, especially on the silty clay; LM and CalPoMag were the most beneficial materials. The exception was MgD, which did not result in any impact on microbial activity relative to the control. Both enzymatic activities were related to the increase in soil pH, particularly the alkaline phosphatase. Ion leaching was more pronounced in the sandy loam than in the silty clay soil, where large differences in the Ca and Mg ion levels were still detected in the 20-to 40-cm layer of the sandy loam. In this study, LM and CalPoMag are interesting liming products, particularly in the silty clay soil.

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Soil microbial communities under conventional-till and no-till continuous cotton systems

Cited by 248 publications

References 28 publications

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

Dynamics of a Soil Fungal Community in a Three-Year Green Garlic/Cucumber Crop Rotation System in Northwest China

Biomass and catabolic diversity of microbial communities with long-term restoration, bare fallow and cropping history in Chinese Mollisols

Impact of natural or industrial liming materials on soil properties and microbial activity

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