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Showing 1 to 11 of 11 for “"Nitrogen release"”.
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Controls on nitrogen fixation and nitrogen release in a diazotrophic endosymbiont of shipworms
Nitrogen fixation is an ecologically important microbial process that can contribute bioavailable combined N to habitats low in N. Shipworms, or wood-boring bivalves, host N2-fixing and cellulolytic symbiotic bacteria in gill bacteriocytes, which have been implicated as a necessary adaptation to an …
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The Nitrogen Release of Vegetable Crop Residues During Incubation as Related to Their Chemical Composition
Made available in DSpace on 2014-12-04T19:49:24Z (GMT). No. of bitstreams: 1 5900527.pdf: 2279423 bytes, checksum: 8db37295c6932d9e973a75284c9a610f (MD5) Previous issue date: 1958
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Nitrogen release, tree uptake, and ecosystem retention in a mid-rotation loblolly pine plantation following fertilization with 15N-enriched enhanced efficiency fertilizers
Nitrogen is the most frequently limiting nutrient in southern pine plantations. Previous studies found that only 10 to 25% of applied urea fertilizer N is taken up by trees. Enhanced efficiency fertilizers could increase tree uptake efficiency by controlling the release of N and/or stabilize N. …
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Decomposition and Nitrogen Release From Leucaena leucocephala,senna siamea, and Flemingia macrophylla Litter in managed alleys for maize in Zambia:Infuence of inorganic-N and litter Quality
The effects of litter quality and inorganic nitrogen (N) on rate of decomposition and N release pattern by three leguminous woody species were investigated under field conditions by the litterbag technique. The species studied in 1994/1995 were Leucaena leucocephala, Senna siamea and Flemingia …
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Decomposition and Nitrogen Release From Leucaena leucocephala,senna siamea, and Flemingia macrophylla Litter in managed alleys for maize in Zambia:Infuence of inorganic-N and litter Quality
The effects of litter quality and inorganic nitrogen (N) on rate of decomposition and N release pattern by three leguminous woody species were investigated under field conditions by the litterbag technique. The species studied in 1994/1995 were Leucaena leucocephala, Senna siamea and Flemingia …
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Volatile fatty acid production during thermophilic aerobic digestion pre-treatment
… this goal, volatile fatty acid production and nitrogen release were examined under two oxygenation states with detention times ranging from 6 to 24 hours at 55$\sp\circ$C. The semi-continuous laboratory scale reactors, with 3 L operating volumes, were fed primary solids obtained from the City …
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Observations and implications of sediment-water interactions in the Niagara impoundment of southwest Virginia
… to constitute a considerable reservoir of nitrogen and phosphorus, which, during the anoxic bottom conditions occurring during the summer months, caused an enhancement of concentrations in the water column. Conversely, during the winter months, the superficial sediments acted as a …
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Dispersal and remineralisation of biodeposits: Ecosystem impacts of mussel aquaculture
… period. Sediment oxygen consumption and ammonium release increased immediately after biodeposit addition and remained elevated compared to control cores without additions for the incubation period. A biodeposit decay rate (0.16 d-1) was calculated by fitting a first-order G model to the observed …
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A study of nitrogen isotopic systematics in lunar soils and breccias
… separates) and regolith breccias are studied for nitrogen abundance and isotopic composition. in order to investigate the isotopic variation in the lunar regolith and to constrain the origin of the nitrogen. The lunar soils and breccias are analysed using a high sensitivity static-vacuum mass …
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Impacts of hemiparasitic plants on the vegetation and biogeochemical cycling in two contrasting semi-natural grassland types
… hemiparasitic and non-parasitic litter on gross nitrogen (N) transformations in the soil; and forth, we traced N uptake from hemiparasitic litter by the vegetation. We compared nutrient returns from Rhinanthus and Pedicularis litter with nutrient stocks in the vegetation and in the soil and …