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Titolo:
Nitrogen and phosphorus release from on-farm and industrial composts
Autore:
Gagnon, B; Simard, RR;
Indirizzi:
Agr & Agroalimentaire Canada, Ctr Rech & Dev Sols & Grandes Cultures, St Foy, PQ G1V 2J3, Canada Agr & Agroalimentaire Canada St Foy PQ Canada G1V 2J3 PQ G1V 2J3, Canada
Titolo Testata:
CANADIAN JOURNAL OF SOIL SCIENCE
fascicolo: 3, volume: 79, anno: 1999,
pagine: 481 - 489
SICI:
0008-4271(199908)79:3<481:NAPRFO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
MINERALIZATION; MANURE; AVAILABILITY; INDEXES; SOIL;
Keywords:
composting; farm manure management; N and P mineralization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Simard, RR Agr & Agroalimentaire Canada, Ctr Rech & Dev Sols & Grandes Cultures, 2560Blvd Hochelaga, St Foy, PQ G1V 2J3, Canada Agr & AgroalimentaireCanada 2560 Blvd Hochelaga St Foy PQ Canada G1V 2J3
Citazione:
B. Gagnon e R.R. Simard, "Nitrogen and phosphorus release from on-farm and industrial composts", CAN J SOIL, 79(3), 1999, pp. 481-489

Abstract

Source materials and manure management may affect compost nutrient availability to plants. A laboratory experiment was conducted to determine the impact of these factors on the N and P release from 23 on-farm and 6 industrial composts. Composts were mixed with the Ap horizon of an Arago sandy loam (Humo-Ferric Podzol), at 200 mg N kg(-1), and incubated for 13 wk in glass jars at 35 degrees C. The soil mineral N content at the end of incubation was the highest from poultry litter, sheep manure, horse manure and vegetable residue sources whereas the fresh solid, beef and young dairy manure composts resulted in high N immobilization. The release of N from the compost organic N fraction was in most cases negative. The soil Mehlich-3 P content at the end of the incubation period was higher from the poultry litter thanfrom any other sources, whereas P was strongly immobilized from week 1 to week 13 in the fresh solid, beef and young dairy manure compost amended soils. Septic rank sludge compost was the least efficient N and P source amongindustrial products whereas the others showed N and/or P release comparable to most on-farm composts. In dairy manure compost, use of wood in bedding, turning compost windrow, Increasing composting duration and sheltering material against precipitation all reduced P immobilization during incubation. Organic N mineralization in soil was only significantly increased by composting duration. This study indicated that the short-term N and P potentialnutrient value of composts are dependent upon compost source materials andmanure management, and should be based on their inorganic N and P content.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 10:08:20