نتایج جستجو برای: soil microorganisms

تعداد نتایج: 215830  

2017
Małgorzata Hawrot-Paw Adam Koniuszy Małgorzata Mikiciuk Monika Izwikow Tomasz Stawicki Paweł Sędłak

The purpose of this research was evaluation of the effect of soil contamination with waste coming from biomass gasification on chosen indicators of its biological activity, growth and development of spring barley, and change of physiological parameters of the plant. Chromatographic content and basic rheological parameters of the substances under research were also analyzed. Liquid wastes, tar, ...

2013
Chao-Min Wang Tsai-Chi Li Yun-Lian Jhan Jen-Hsien Weng Chang-Hung Chou

Rhododendron formosanum is distributed widely in the central mountains in Taiwan and the major allelopathic compound in the leaves has been identified as (-)-catechin, which is also a major allelochemical of an invasive spotted knapweed in North America. Soil microorganisms play key roles in ecosystems and influence various important processes, including allelopathy. However, no microorganism h...

ژورنال: طلوع بهداشت یزد 2015
زارعی, مریم, طلایی, امیر رضا, گلی, امین,

Introduction: Contamination of soil by diesel fuel can pose serious problems to ecosystems. For this reason some ways to remove diesel fuel from soil were developed by a number of researchers. The aim of this research is to extract bio-surfactant for treating soil contaminated with diesel fuel. Methods: In this study, 4 soil samples were taken from fields that had been exposed to diesel fuel...

Journal: :Research in microbiology 2015
Alessandra Turrini Cristiana Sbrana Manuela Giovannetti

Experimental studies investigated the effects of transgenic crops on the structure, function and diversity of soil and rhizosphere microbial communities playing key roles in belowground environments. Here we review available data on direct, indirect and pleiotropic effects of engineered plants on soil microbiota, considering both the technology and the genetic construct utilized. Plants modifie...

Journal: :Applied and environmental microbiology 2002
Kristian K Brandt Anders Pedersen Jan Sørensen

Information about in situ toxicity of the bioavailable pools of adsorptive soil pollutants is a prerequisite for proper ecological risk assessment in contaminated soils. Such toxicity data may be obtained by assays allowing for direct exposure of introduced test microorganisms to the toxicants, as they appear in solid solution equilibria in the natural soil. We describe a novel sensitive solid-...

Journal: :journal of agricultural science and technology 2012
e. p. b. ferreira c. c. g. martin-didonet

agricultural sustainability is closely related with the efficient use of natural resources, which are primarily transformed by the action of microorganisms. soil microorganisms are usually used as early indicators of soil quality since they rapidly respond to changes in soil management. a field experiment was carried out aiming to evaluate the effect of siratro (macroptylium atropurpureum), bah...

Journal: :بوم شناسی کشاورزی 0
حمیرا سلیمی سعید سماوات پرویز شیمی

in order to study the effect of flaming on seed viability of sinapis arvensis l., changes in microorganisms population and physicochemical characteristics of soil after canola (brassica napus l.) harvesting, an experiment was carried out based on randomized complete block design with four replications and eight treatments at karaj research center, iran, during 2005- 2006. after harvesting canol...

Journal: :Research Journal of Microbiology 2012

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