Nitrogen mineral

TPN is used to prevent nitrogen and weight loss or to treat negative nitrogen (mineral component in protein and amino acids) balance (a situation in which more nitrogen is used by the body than is taken in) in the following situations ... [Pg.645]

Davidson, E., Hart, S.C., Shanks, C.A. and Firestone, M.K. 1991 Measuring gross nitrogen mineralization, immobilization, and nitrification by isotopic pool dilution in intact soil cores. Journal of Soil Science 42 335—349. [Pg.59]

L. Landi, L. Badalucco, F. Pomare, and P. Nannipieri, Effectiveness of antibiotics to distinguish the contributions of fungi and bacteria to net nitrogen mineralization, nitrification and re.spiration. Soil Biol. Biocheiii. 25 1771 (1993). [Pg.81]

B. S. Griffiths, Microbial-feeding nematodes and protozoa in soil their effects on microbial activity and nitrogen mineralization in decomposition hotspots and the rhizosphere. Plant Soil 164 25 (1994). [Pg.188]

Dar G.H., Mishra M.M. Influence of cadmium on carbon and nitrogen mineralization in sewage sludge amended soils. Environ Pollut 1994 84 285-290. [Pg.334]

Boone RD (1994) Light-fraction soil organic matter origin and contribution to net nitrogen mineralization. Soil Biol Biochem 26 1459-1468... [Pg.224]

Soil microbes. Effects include reduced microbial biomass and/or species diversity, thus affecting microbial processes such as enzyme synthesis and activity, litter decomposition, associated with carbon and nitrogen mineralization, and soil respiration ... [Pg.59]

Juma et al. [49] give details of studies to determine the most suitable equation, and the most appropriate method for calculating the values of the equation parameters, for estimating net nitrogen mineralization in the soil. Data obtained for several different types of soil are examined. Both the hyperbolic equation and a first-order equation gave accurate predictions of the amount of nitrogen mineralized over an incubation period of 14 weeks, but the estimates of potentially mineralizable nitrogen and its half-life depended on the model used. [Pg.330]

Dar, G.H. Impact of lead and sewage sludge on soil microbial biomass and carbon and nitrogen mineralization. B. Environ. Contam. Tox. 1997, 58, 234-240. [Pg.54]

Analyses will be those in common use for soils from fields for both grass and arable crops. MAFF/ADAS (now DEFRA) methods and Index Tables are reproduced by permission of the Controller of Her Majesty s Stationery Office (Ref. 20001327). Analyses for nitrogen mineralization are included. Special consideration will be given to composts and recycled urban waste. [Pg.280]

From the vertical distributions of various components, the mineralized carbon (Miner. C) and nitrogen (Miner. N) at various depths were calculated according to the following equations ... [Pg.56]

From the vertical distributions of various components, the mineralized carbon (Miner. C) and nitrogen (Miner. N) at various depths were calculated. On the basis of the calculated values, the ratio of Miner. C/Miner. N in a vertical water column of Lake Kizaki-ko was estimated to be 2.83, which is considerably smaller than that of plankton. [Pg.62]

Flavel,T. C., and Daniel, V. (2006). Carbon and nitrogen mineralization rates after application of organic amendments to soil. J. Environ. Qual. 35,183-193. [Pg.175]

Nadelhoffer, K. J. (1990). Microlysimeter for measuring nitrogen mineralization and microbial respiration in aerobic soil incubations. Soil Sci. Soc. Am. J. 54(2), 411 415. [Pg.267]

Verhoef, H. A., and Brussaard, L. (1990). Decomposition and nitrogen mineralization in natural and agroecosystems The contribution of soil animals. Biodegradation 11(3), 175-211. [Pg.271]

Whalen, J. K., Bottomley, P. I, and Myrold, D. D. (2000). Carbon and nitrogen mineralization from light-and heavy-fraction additions to soil. Soil Biol. Biochem. 32(10), 1345-1352. [Pg.272]

Gardner, W.S., Nalepa, T.F., and Malczyk, J.M. (1987) Nitrogen mineralization and denitrification in lake Michigan sediments. Limnol. Oceanogr. 32, 1226-1238. [Pg.584]

Haugen, J.E., and Lichtentaler, R. (1991) Amino acid diagenesis, organic carbon and nitrogen mineralization in surface sediments from the inner Oslofjord, Norway. Geochim. Cosmochim. Acta 55, 1649-1661. [Pg.594]

Table 7.1 presents the most important biochemical features obtained for the infants included in the study. All water samples collected from the areas known for an intense use of nitrogen mineral fertilizers exceeded the maximum contaminant level for nitrates of 50 mg Lthereby indicating that the acute nitrate/nitrite intoxication caused the clinically evaluated methemoglobinemia. [Pg.155]

Schimel, J. Bennett, J. (2004). Nitrogen mineralization challenges of a changing paradigm. [Pg.127]

Medina and Cuevas (1994) analyzed available data for potential mineralizaton of nitrogen and nitrification rates from tropical forests. Nitrogen mineralization rates in... [Pg.63]

Gardner, W. S., Corner, J. B., andHerche, L. R. (1993). Chromatographic measurement of nitrogen mineralization rates in marine coastal waters with N. Mar. Ecol. Prog. Ser. 93, 65—73. [Pg.368]

Wilson, D. J., and Jefferies, R. L. (1996). Nitrogen mineralization, plant growth and goose herbivory in an arctic coastal ecosystem. /. Ecol. 85, 841—851. [Pg.1036]

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