نتایج جستجو برای: soil acidity
تعداد نتایج: 189593 فیلتر نتایج به سال:
In a previous publication ^ the writers reported comparative studies of the effect of calcium hydrate (Ca(0H)2), calcium carbonate (CaCOa), and certain other compounds, when applied to infested soil, upon infection of cabbage by the clubroot organism {Plasmodiophora brassicae Wor.). It was shown that, in well-watered soil in the greenhouse, infection was reduced perceptibly when the reaction of...
Electrical conductivity and acidity of soil are the most important chemical factors of soil for agriculture. The nature of soil is in such a way that its change has a continuous form. The method that can take into account this continuity will be able to show a better picture of change in soil characteristics. Objectives of this research are to investigate the relations between measured electric...
Excessive soil acidity is known to have potential negative impacts on crop production. The chemical and physical characteristics of a liming material determine its capacity to neutralize soil acidity. The material CaCO3 equivalent (CCE) and fineness effectiveness estimates are included in effective CCE (ECCE) assessments of a material’s liming value and to decide application rates. The objectiv...
in order to study of ecological and phenological traits of ferulago angulata asan important medicinal plant, this research was conducted in hezar mountains andbondareh henza in kerman province, iran. random samples of this plant were taken andtheir vegetation habitat conditions and their growth characteristics including height ofcollar leaves, height of flower stem, flower stem number and forag...
In soils of tropical climate regions the high acidity and the presence of exchangeable aluminum (Al), associated to low fertility, are the main restrainting factors for agricultural production. A laboratory experiment was conducted using 26 soils of different Brazilian regions, to investigate soil acidity components, giving emphasis to Al and their relations with chemical properties. The pH cor...
Understanding distribution of soil properties at the field scale is important for improving agricultural management practices and for assessing the effects of agriculture on environmental quality. Spatial variability within soil occurs naturally due to pedogenic factors as well as land use and management strategies. The variability of soil properties within fields is often described by classica...
*Galina N. Koptsik and Svetlana Yu. Livantsova, Soil Science Faculty, Moscow State University, Moscow 119899, Russia; Serguei V. Koptsik, Faculty of Physics, Moscow State University, Moscow 119899, Russia. *Corresponding author: [email protected] ABSTRACT Soil conservation has fundamental significance for biodiversity conservation and sustainable land use. Variations in soil types within the ...
Introduction: Considering the extensive degradation of Iranian rangelands and forests due to livestock grazing and the land use change in recent decades, rangeland management requires a comprehensive knowledge concerning the ecological characteristics of native plant species and how they respond to environmental factors. Developed from the Fabaceae legume family, Taverniera spartea is an impo...
Members of the phylum Acidobacteria are among the most abundant soil bacteria on Earth, but little is known about their response to environmental changes. We asked how the relative abundance and biogeographic patterning of this phylum and its subgroups responded to forest-to-pasture conversion in soils of the western Brazilian Amazon. Pyrosequencing of 16S rRNA genes was employed to assess the ...
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