نتایج جستجو برای: microbial indices
تعداد نتایج: 194448 فیلتر نتایج به سال:
In the present study, water samples from 8 sites known as: Taploca, Nagy-borvíz, Piricske (located in Romania) and Szent Jakab, Kiskút, Kossuth Lajos, Polányi kút Berzsenyi Balaton highland Hungary) characterized with low nutrient content, were studied using cultivation independent methods. Diversity indices cell counts determined to assess species richness relation within samples. Next generat...
Different land uses have various effects on the changes of soil properties. The purpose of this study was to evaluate the effects of natural forest, needle-leaved plantation and rangelands of central Alborz on new indices of soil quality (i.e. organic matter stratification, carbon management index and soil biological activities). For this purpose, eight samples from organic layer (litter) and m...
The impacts of two organic soil amendments on nematode abundance, community structure and soil characteristics were studied in field grown tomatoes. We hypothesized that as the raw (labile form) and composted (non-labile form) manures differ in their chemical composition and effect on microbial activity. Also they will have different effects on soil properties and directly and indirectly affect...
In order to investigate P acquisition efficiency (PACE) and P utilization efficiency (PUTE) of the corn in the presence of phosphate-solubilizing microorganisms (PSMs), a factorial experiment was carried out in a completely randomized design in the greenhouse. The factors were including P sources (tricalcium phosphate (TCP) and rock phosphate (RP)) and microbial inoculation (control, soluble P ...
The total microbial diversity and community in submerged sediments near mining sites, transition intact sites at Cikidang River, Banten were assessed using 16S rDNA sequence data biodiversity indices. Assessed water quality parameters the river current, dissolved oxygen (DO), pH, redox potential, salinity, temperature turbidity. Microbial alpha used Shannon index, ChaoI index Operational Taxono...
Title of Document: THE MICROBIAL ECOLOGY AND HORTICULTURAL SUSTAINABILITY OF ORGANICALLY AND CONVENTIONALLY MANAGED APPLES. Andrea R. Ottesen, PhD, 2008 Directed By: Professor, Dr. Christopher S. Walsh, Plant Sciences and Landscape Architecture Objectives Organically and conventionally managed apple trees (Malus domestica Borkh) were evaluated for three growing seasons (2005-2007) to examine th...
Danovaro and colleagues (3) recently compared microbial community diversity and richness estimates obtained using automated ribosomal intergenic spacer analysis (ARISA) with those obtained using analysis of terminal restriction fragment length polymorphisms (T-RFLP) of 16S rRNA genes. While community fingerprinting methods such as ARISA and T-RFLP are useful for comparative analyses, they are n...
Most calcareous soils have relatively low levels of organic matter. To evaluate the effect pruning waste biochar (PWB) and compost (PWC) combined with arbuscular mycorrhizal fungi (AMF) on biological indices, a rhizobox study wheat using completely randomized design was conducted under greenhouse conditions. The studied factors included source material (PWB, PWC, control), microbial inoculation...
Soil enzyme activities have been suggested as suitable indicators for the evaluation of metal contamination because they are susceptible to microbial changes caused by heavy stress and strictly related soil nutrient cycles. However, there is a growing lack recognition summary historic advancements that use enzymology proposal methods. Here, we review most common methods pollution based on activ...
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