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Titolo:
Field evaluation of the equilibrium concentration technique (JTI method) for measuring ammonia emission from land spread manure or fertiliser
Autore:
Misselbrook, TH; Hansen, MN;
Indirizzi:
Inst Grassland & Environm Res, Okehampton EX20 2SB, Devon, England Inst Grassland & Environm Res Okehampton Devon England EX20 2SB , England Danish Inst Agr Sci, Res Ctr Bygholm, DK-8700 Horsens, Denmark Danish InstAgr Sci Horsens Denmark DK-8700 lm, DK-8700 Horsens, Denmark
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 22, volume: 35, anno: 2001,
pagine: 3761 - 3768
SICI:
1352-2310(200108)35:22<3761:FEOTEC>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
NITROGEN; VOLATILIZATION; SAMPLER; REPRODUCIBILITY; COEFFICIENT; AGRICULTURE; SLURRY; PIG;
Keywords:
ammonia emission; measurement techniques; manure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Misselbrook, TH Inst Grassland & Environm Res, Okehampton EX20 2SB, Devon,England Inst Grassland & Environm Res Okehampton Devon England EX20 2SB
Citazione:
T.H. Misselbrook e M.N. Hansen, "Field evaluation of the equilibrium concentration technique (JTI method) for measuring ammonia emission from land spread manure or fertiliser", ATMOS ENVIR, 35(22), 2001, pp. 3761-3768

Abstract

Three experiments were conducted in which intercomparisons were made between the equilibrium concentration technique, developed at JTI, Sweden, and the integrated horizontal flux technique for measuring ammonia emissions following applications of urea fertiliser, cattle slurry and solid pig manure to land. Mean square prediction error analysis was used to compare the emission rates measured by the two techniques. There were no significant differences between the measurement techniques, although there was some evidence that emission rates were overestimated by the equilibrium concentration method relative to the integrated horizontal flux technique at higher emissionrates (> 400 g N ha(-1) h(-1)). The equilibrium concentration method provides a practical and relatively inexpensive technique for measuring emissions under ambient conditions from small plots but good sampler preparation, adequate replication of emission measurements and appropriate choice of duration of sampling periods are necessities for obtaining reliable results. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/06/20 alle ore 01:39:46