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Titolo:
Characterization and potential nutrient value of on-farm and industrial composts
Autore:
Simard, RR; Gagnon, B;
Indirizzi:
Agr & Agri Food Canada, St Foy, PQ G1V 2J3, Canada Agr & Agri Food CanadaSt Foy PQ Canada G1V 2J3 t Foy, PQ G1V 2J3, Canada
Titolo Testata:
PROCEEDINGS OF THE INTERNATIONAL COMPOSTING SYMPOSIUM (ICS'99), VOLS 1 AND2
, , anno: 2000,
pagine: 409 - 420
Fonte:
ISI
Lingua:
ENG
Keywords:
manure; mineralization; nitrogen; phosphorus;
Tipo documento:
Article
Natura:
Monografia
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Simard, RR Agr & Agri Food Canada, 2560 Hochelaga Blvd, St Foy, PQ G1V 2J3, Canada Agr & Agri Food Canada 2560 Hochelaga Blvd St Foy PQ Canada G1V 2J3
Citazione:
R.R. Simard e B. Gagnon, "Characterization and potential nutrient value of on-farm and industrial composts", PROCEEDINGS OF THE INTERNATIONAL COMPOSTING SYMPOSIUM (ICS'99), VOLS 1 AND2, 2000, pp. 409-420

Abstract

An understanding of the chemical factors that affect compost nutrient release is essential to adequately predict their contribution to plant nutrition. A laboratory experiment was conducted to characterize 23 on-farm and 6 industrial composts from Quebec (Canada) and to determine their N and P release pattern to an Arago sandy loam (Humo-Ferric Podzol), incubated in glassjars at 35 degreesC for 13 weeks. Regression analysis with all materials revealed that the compost organic N mineralized after 13 wk was best predicted by the percentage of compost N as humic substances, and NO3- and NH4+ contents, whereas the P released was related to the soil-compost Mehlich-3 P content at the beginning of the incubation and compost total P content. Regression analysis with the dairy manure group (n=15) yielded better prediction of the amounts of N and P released. The same parameters as for the wholegroup were retained in that restricted analysis. This study indicates thatthe short-term N and P potential nutrient value of composts are dependent upon compost source materials and manure management. The prediction of their nutrient release, especially N, would be improved if provided according to material source.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 07:28:43