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Isolation and Characterization of Two Novel (Per)Chlorate-Reducing Bacteria from Swine Waste Lagoons
Microbial chlorate (ClO3 −) and perchlorate (ClO4 −) reduction has recently been recognized as an important form of...
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Sustaining productivity of lowland rice soils: issues and options related to N availability
The subsistence rice farming of the prechemical era efficiently sustained the N status of soils by maintaining a balance between N loss and N gain...
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The Cycling of Elements in Relation to Environmental Biotechnology
The remarkable ability of microorganisms to exhibit diverse metabolic activities makes them ideal organisms for use in environmental biotechnology...
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Bacterial Biomass
Among soil microorganisms, bacteria are particularly suitable for quantification by counting. It should be considered, however, that bacteria are...
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The Soil as a Porous Medium
The soil is the upper layer of the unsaturated zone of the earth. Soils are very diverse in composition and behavior. The solid phase consists of...
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Deposition of anthropogenic compounds on monuments and their effect on airborne microorganisms
Monuments and buildings act as repositories of airborne organic and inorganic pollutants, which accumulate at the surfaces in zones protected from...
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Biological N2 fixation by heterotrophic and phototrophic bacteria in association with straw
Much of the crop residues, including cereal straw, that are produced worldwide are lost by burning. Plant residues, and in particular straw, contain...
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Biological nitrogen fixation: An efficient source of nitrogen for sustainable agricultural production?
A fundamental shift has taken place in agricultural research and world food production. In the past, the principal driving force was to increase the...
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Biological N2 Fixation in wetland rice fields: Estimation and contribution to nitrogen balance
This paper 1) reviews improvements and new approaches in methodologies for estimating biological N2 fixation (BNF) in wetland soils, 2) summarizes...
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Trends in biological nitrogen fixation research and application
In the world each year 17.2 × 107 tons of N are biologically fixed. Biological nitrogen fixation (BNF) contributes to plant production in arable...
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Technologies for utilizing biological nitrogen fixation in wetland rice: potentialities, current usage, and limiting factors
Almost all types of N2 -fixing microorganisms are found in lowland rice fields. The resulting N fertility has permitted moderate but constant...
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Heterotrophic N2 fixation in paddy soils
The yield of rice crops in many South Asian countries affects the food supply of almost half the world’s population. Nitrogen is the element that...
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The significance of the biological sulfur cycle in rice production
Rice is one of the world’s most important food crops, forming nearly 20 percent of the world’s food grain production [226]. It is grown on 137 × 106...
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Free — living blue — green algae in tropical soils
One result of the fertilizer price increase during the last decade is a renewed interest in biological N2 fixation as a means of reducing the use of...