Now showing items 31-40 of 58
Co-composting of spent pig litter and sludge with forced-aeration
(Elsevier, 2000-01-01)
Co-composting spent pig (Sus scrofa L.) litter (a mixture of partially decomposed pig manure and sawdust) with pig sludge (the sludge that settled at the bottom of the primary sedimentation tank in treating slurries) was ...
Effects of mulching and fertilization on soil nutrients, microbial activity and rhizosphere bacterial community structure determined by analysis of TRFLPs of PCR-amplified 16S rRNA genes
(Elsevier, 2002-07-30)
Organic mulches such as recycled, ground wood pallets and composted yard waste are widely used in landscapes to suppress weeds, and improve plant health. However, little is known about how mulches affect soil or rhizosphere ...
Molecular diversity of denitrifying genes in continental margin sediments within the oxygen-deficient zone off the Pacific coast of Mexico
(American Society for Microbiology, 2003-06-01)
To understand the composition and structure of denitrifying communities in the oxygen-deficient zone off the Pacific coast of Mexico, the molecular diversity of nir genes from sediments obtained at four stations was examined ...
Microbial community dynamics in manure composts based on 16S and 18S rDNA T-RFLP profiles
(Taylor & Francis, 2005-01-01)
Compost processing is assumed to be related to the microbial communities present. However, methods that will evaluate these relationships are not well understood. In this study, terminal restriction fragment length ...
Vertical distribution of nitrite reductase genes (nir S) in continental margin sediments of the Gulf of Mexico
(Oxford University Press (OUP), 2006-12-01)
Marine sediments account for up to 66% of the loss of nitrogen load to coastal areas. Sedimentary denitrification is the main sink for fixed nitrogen in the global nitrogen budget, and thus it is important to understand ...
Characterization and composting of poultry litter in forced-aeration piles
(Elsevier, 2002-03-07)
The environmental problems associated with raw poultry manure application could be mitigated by stabilizing its nutrient and organic matter (OM) contents by composting before application to agricultural soils. In the present ...
Microbial population dynamics and enzyme activities during composting
(Taylor & Francis, 2002-01-01)
The changes in population size of different microbial groups (total aerobic heterotrophs, actinomycetes, fungi, fecal coliforms, ammonium- and nitrite-oxidizing bacteria, and denitrifying bacteria) and the activities of ...
Evaluation of organic matter and nutrient composition of partially decomposed and composted spent pig litter
(Taylor & Francis, 2003-01-01)
Characterization of soil‐applied organic material is necessary in order to clarify the nature of the organic matter and nutrients in it In this study, the organic matter and nutrient contents of the spent pig litter (a ...
Carbon, nutrient, and mass loss during composting
(Springer Nature, 2002-05-15)
Hoop manure (a mixture of partially decomposed pig manure and cornstalks from swine fed in hoop structures) was the subject of a nitrogen mass balance during the feeding period. The manure was then composted in windrows ...
Evolution of extracellular enzyme activities during manure composting
(Oxford University Press (OUP), 2002-01-01)
Aims: The objectives of this work were to determine the extracellular enzyme profiles during composting, relate the activities of these enzymes to the changes in microbial population and compare the enzyme profiles between ...