نتایج جستجو برای: soil microflora

تعداد نتایج: 186314  

Journal: :E3S web of conferences 2021

One of the methods combating unwanted microflora is use antibiotics, however, along with positive properties, they have a number significant disadvantages, in particular, detrimental effect both pathogenic and beneficial intestinal microflora. In this regard, there an urgent need to replace antibiotics safer substances, which increasingly include probiotics. The mechanism action probiotics sele...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده جنگلداری و مهندسی چوب و کاغذ 1391

درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...

2014
Natalia Yu Taran Olena M Gonchar Kostyantyn G Lopatko Lyudmila M Batsmanova Mykola V Patyka Mykola V Volkogon

UNLABELLED The use of colloidal solutions of metals as micronutrients enhances plant resistance to unfavorable environmental conditions and ensures high yields of food crops due to the active penetration of nanoelements into the plant cells. Microbiological examination of rhizosphere soil have revealed that combined use of colloidal solution of nanoparticles of molybdenum (CSNM, 8 mg/l), and mi...

2011
Nirmal Kumar Anubhuti Bora Rita Kumar Manmeet Kaur Amb

Cyanobacteria are present abundantly in rice fields and are important in helping to maintain rice field fertility through nitrogen fixation. Application of agricultural pesticides for improving crop productivity has become necessary in the present day agricultural practices. This has resulted in either stimulatory or inhibitory effects on the soil microflora including nitrogen-fixing cyanobacte...

2004
Jan Frouz Jiří Kalčík Pavel Cudlín

Here we summarize recent data on the accumulation of phosphorus in nests of wood ants as compared with that in the surrounding forest soil, and discuss mechanisms that cause this phenomenon. Moreover, we also indicate questions for future research. Various species of red wood ants (Formica s. str.) in a wide geographic area show an apparent increase of phosphorus content in their nests. Remarka...

Journal: :Vestnik Nižnevartovskogo gosudarstvennogo universiteta 2021

The respiratory activity parameters of various types alluvial soils with different residual content oil products were studied. inhibitory effect on basal respiration in re-cultivated was not found. substrate-induced most remained at the control level or decreased slightly. Soils differed significantly degree resistance their microbial pool to products. microflora is able overcome negative effec...

Journal: :Applied and environmental microbiology 1976
P Van Dijck H van de Voorde

The sensitivity of different microorganisms, considered as typical representatives of the microflora of soil and water, was established to evaluate the influence of the nonmedical use of antimicrobial agents on bacterial ecology. Only seven strains, six chemoorganotrophs and one chemolithotroph, could be considered as relatively sensitive to the 21 antimicrobial compounds tested. The other 29 m...

Journal: :Indian journal of experimental biology 2000
A Gupta M Gopal K V Tilak

Plant growth results from interaction of roots and shoots with the environment. The environment for roots is the soil or planting medium which provide structural support as well as water and nutrients to the plant. Roots also support the growth and functions of a complex of microorganisms that can have a profound effect on the growth anti survival of plants. These microorganisms constitute rhiz...

Journal: :The Journal of antimicrobial chemotherapy 2000
C Edlund C E Nord

Oral administration of antibiotics for treatment of urinary tract infections (UTIs) can cause ecological disturbances in the normal intestinal microflora. Poorly absorbed drugs can reach the colon in active form, suppress susceptible microorganisms and disturb the ecological balance. Suppression of the normal microflora may lead to reduced colonization resistance with subsequent overgrowth of p...

2003
INGEGERD ADLERBERTH

Directly after birth, bacteria commence to colonise the skin and the mucous membranes of the respiratory, urogenital and intestinal tract. With time, more or less complex bacterial ecosystems are established at various body surfaces, of which the normal intestinal microflora is the largest and most diverse. Thus, an adult individual harbours more than 400 bacterial species at this site. Most of...

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