Comparison of Chemical Methods of Assessing Potentially Available Organic Nitrogen from Organic Residues Applied to a Sandy Soil

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Comparison of Chemical Methods of Assessing Potentially Available Organic Nitrogen from Organic Residues Applied to a Sandy Soil

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dc.contributor.author Cordovil, C.M.D.S.
dc.contributor.author Coutinho, J.
dc.contributor.author Goss, M.J.
dc.contributor.author Cabral, F.
dc.date.accessioned 2011-04-29T19:09:37Z
dc.date.available 2011-04-29T19:09:37Z
dc.date.issued 2007
dc.identifier.citation Cordovil, C. M. D. S. , Coutinho, J. , Goss, M. J. and Cabral, F. "Comparison of Chemical Methods of Assessing Potentially Available Organic Nitrogen from Organic Residues Applied to a Sandy Soil', Communications in Soil Science and Plant Analysis." 38.7 (2007): 89 — 1006
dc.identifier.uri http://hdl.handle.net/10214/2665
dc.description.abstract More than 90% of the nitrogen (N) in soils is bond as organic N compounds. The available N can be estimated on the mineral N released during time-consuming incubations of soil. Several chemical methods have been developed as substitutes for incubations. On the other hand, there has been an increase in waste production. Residues could potentially offset the need for mineral fertilizers, being both an economic and environmental benefit. Thus, the development of a routine method for prediction of N supply both from soil organic matter (SOM) and the application of organic residues is of great interest. An incubation experiment was performed in a Cambic Arenosol to evaluate different chemical methods. Air-dried soil was mixed with increasing amounts of composted solid municipal waste, secondary pulp-mill sludge, hornmeal, poultry manure, the solid phase from pig slurry, and composted pig manure. Samples were incubated for 244 days under a controlled environment. Among the chemical extractants studied, hot 2 M potassium chloride (KCl) and hot 0.01 M calcium chloride (CaCl2) showed promise in indicating values of N0(potentially available nitrogen), and these simple methods are suitable for use in routine laboratory conditions.
dc.language.iso en en_US
dc.publisher Communications in Soil Science and Plant Analysis en_US
dc.subject Aerobic incubation en_US
dc.subject chemical methods en_US
dc.subject nitrogen mineralization en_US
dc.subject organic residues en_US
dc.subject sandy soil en_US
dc.title Comparison of Chemical Methods of Assessing Potentially Available Organic Nitrogen from Organic Residues Applied to a Sandy Soil en_US
dc.type Article en_US


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