Download or read book The Influence of Soil Factors on the Microbial Cellulolytic Activity in Some Minnesota Soils written by Orlando R. Ruschmeyer and published by . This book was released on 1956 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Factors Influencing Microbial Activity and Subsequent Nutrient Release from Organic Soils written by Jeanette Helen Stiegler and published by . This book was released on 1978 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cellulolytic Activity of Some Soil Fungi and Bacteria written by Roshan Lal and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commencement written by University of Minnesota and published by . This book was released on 1956 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Enzymology written by Girish Shukla and published by Springer Science & Business Media. This book was released on 2010-10-17 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil enzymes are one of the vital key mediators involved in nutrient recycling and the decomposition of organic matter and thereby in maintaining soil quality and fertility. This Soil Biology volume covers the various facets of soil enzymes, such as their functions, biochemical and microbiological properties and the factors affecting their activities. Enzymes in the rhizosphere, in forest soils, and in volcanic ash-derived soils are described. Soil enzymes covered include phosphohydrolases, lignocellulose-degrading enzymes, phenol oxidases, fungal oxidoreductases, keratinases, pectinases, xylanases, lipases and pectinases. Several chapters treat the soil enzymatic activities in the bioremediation of soils contaminated with pesticides and pollutants such as oil, chlorinated compounds, synthetic dyes and aromatic hydrocarbons. The role of soil enzymes as bioindicators is a further important topic addressed.
Download or read book Effect of Abiotic Factors on Enzyme Activity in Brownfield Soils written by Diane Hagmann and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Several factors can influence soil function, including biotic and abiotic. Biotic factors are those that are living, like microorganisms. Abiotic factors are those that are non-living, and include heavy metals, organic contaminants, pH, and nutrients. Liberty State Park in Jersey City (N.J., U.S.A), is a 100-ha brownfield was once a major rail yard that was restricted public access in 1969. The site without any intervention of humans grew a forest. The primary objective of this dissertation is to understand the impacts of both inorganic and organic contaminants on soil function in addition to provide strategies that can override the negative impacts of these abiotic factors. Several studies were completed in order to attain the primary objective, which included 1) characterizing both organic and inorganic compounds present in Liberty State Park and understand relationship with soil function, 2) further characterize coal particles that abundant in the soil, 3) provide a potential strategy of improving soil function despite the presence of organic and inorganic contaminants by adding different combinations of artificial root exudates on soil enzymatic activities, 4) understand the influence of a gradient of abiotic factors on both soil function and microbial communities. A variety of elevated heavy metals and organic contaminants derived from fossil fuels, like polycyclic aromatic compounds were present in all studied soils. Within Liberty State Park, soils from several vegetated sites within Liberty State Park (43, 146 and 25F) had higher enzyme activities compared to the barren site 25R, which is below detection limit. Optical microscopy analyses revealed bituminous and anthracite coal, coke, tar/pitch, and ash particles were present in all soil samples. Upon further investigation using density separation, pyrolysis gas chromatography confirmed the majority of coal present are anthracite and higher rank (medium volatile) bituminous. An inoculation with 25F soil into an experimentally created gradient of 25F and 25R soils provided insights into the barren nature of 25R. Some fungal classes decreased while others increased with increasing amounts of 25R soils. One possible strategy of improving soil function is with the addition of artificial exudates, which included sugars, organic acids, and amino acids. The combination of sugars, organic acids, and amino acids, greatly increased phosphatase, cellobiohydrolase, and L-leucine aminopeptidase activity over time in poorly-functioning, barren soil 25R. Phosphatase fold change was the highest compared to the cellobiohydrolase and L-leucine aminopeptidase when artificial exudates were added. The site provides a unique opportunity to understand the impact of abiotic factors, such as inorganic and organic contaminants in the presence or absence of vegetation on soil health. These data can provide a deeper understanding of the chemistry and biochemistry, which can help to inform future remediation efforts in the public interest. These data can also provide a possible strategy to improve soil function within contaminated brownfield soils.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1987-10 with total page 1238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticides Documentation Bulletin written by and published by . This book was released on 1966 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Microbial Regulation of Global Biogeochemical Cycles written by Johannes Rousk and published by Frontiers E-books. This book was released on 2014-10-17 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global biogeochemical cycles of carbon and nutrients are increasingly affected by human activities. So far, modeling has been central for our understanding of how this will affect ecosystem functioning and the biogeochemical cycling of carbon and nutrients. These models have been forced to adopt a reductive approach built on the flow of carbon and nutrients between pools that are difficult or even impossible to verify with empirical evidence. Furthermore, while some of these models include the response in physiology, ecology and biogeography of primary producers to environmental change, the microbial part of the ecosystem is generally poorly represented or lacking altogether. The principal pool of carbon and nutrients in soil is the organic matter. The turnover of this reservoir is governed by microorganisms that act as catalytic converters of environmental conditions into biogeochemical cycling of carbon and nutrients. The dependency of this conversion activity on individual environmental conditions such as pH, moisture and temperature has been frequently studied. On the contrary, only rarely have the microorganisms involved in carrying out the processes been identified, and one of the biggest challenges for advancing our understanding of biogeochemical processes is to identify the microorganisms carrying out a specific set of metabolic processes and how they partition their carbon and nutrient use. We also need to identify the factors governing these activities and if they result in feedback mechanisms that alter the growth, activity and interaction between primary producers and microorganisms. By determining how different groups of microorganisms respond to individual environmental conditions by allocating carbon and nutrients to production of biomass, CO2 and other products, a mechanistic as well as quantitative understanding of formation and decomposition of organic matter, and the production and consumption of greenhouse gases, can be achieved. In this Research Topic, supported by the Swedish research councils' programme "Biodiversity and Ecosystem Services in a Changing Landscape" (BECC), we intend to promote this alternative framework to address how cycling of carbon and nutrients will be altered in a changing environment from the first-principle mechanisms that drive them – namely the ecology, physiology and biogeography of microorganisms – and on up to emerging global biogeochemical patterns. This novel and unconventional approach has the potential to generate fresh insights that can open up new horizons and stimulate rapid conceptual development in our basic understanding of the regulating factors for global biogeochemical cycles. The vision for the research topic is to facilitate such progress by bringing together leading scientists as proponents of several disciplines. By bridging Microbial Ecology and Biogeochemistry, connecting microbial activities at the micro-scale to carbon fluxes at the ecosystem-scale, and linking above- and belowground ecosystem functioning, we can leap forward from the current understanding of the global biogeochemical cycles.
Download or read book Acta forestalia fennica written by and published by . This book was released on 1969 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organic Amendments and Soil Suppressiveness in Plant Disease Management written by Mukesh K. Meghvansi and published by Springer. This book was released on 2015-11-05 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a timely review of concepts in plant disease management involving microbial soil suppressiveness and organic amendments. Topics discussed include the impact of suppressive soils on plant pathogens and agricultural productivity, the enhancement of soil suppressiveness through the application of compost and the development of disease suppressive soils through agronomic management. Further chapters describe diseases caused by phytopathogens, such as Pythium, Fusarium and Rhizoctonia, interaction of rhizobia with soil suppressiveness factors, biocontrol of plant parasitic nematodes by fungi and soil suppressive microorganisms.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1985 with total page 1344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Bioprocessing of Agri food Wastes written by Gustavo Molina and published by CRC Press. This book was released on 2023-04-28 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbes are widely used in large-scale industrial processes due to their versatility, easy growing cultivation, kinetic potential, and the ability to generate metabolites with a wide range of potential applications to various commercial sectors, such as the food, pharmaceutical and cosmetic industries, in addition to the potential for agriculture, biomedical, and several others. Among the metabolites of greatest commercial interest, and many obtained on an industrial scale, the wide range of enzymes, biofuels, organic acids, amino acids, vitamins, biopolymers, and many other classes of metabolites. This book is intended for Bioengineers, Biologist, Biochemist, Biotechnologists, microbiologist, food technologist, enzymologist, and related Professionals/ researchers. Explores recent advances in the valorization of agri-food waste Provides technical concepts on the production of various bio-products of commercial interest Discusses the main process conditions to overcome the difficulties of using waste as alternative raw materials Introduces technical-economic details on the advantages and disadvantages of exploring the waste recovery chain Explores the main technological advances in the recovery of residues in functional products
Download or read book Soils and Fertilizers written by and published by . This book was released on 1984 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
