Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
IMPACT OF TILLAGE PRACTICES ON ORGANIC-CARBON AND NITROGEN STORAGE INCOOL, HUMID SOILS OF EASTERN CANADA
Autore:
ANGERS DA; BOLINDER MA; CARTER MR; GREGORICH EG; DRURY CF; LIANG BC; VORONEY RP; SIMARD RR; DONALD RG; BEYAERT RP; MARTEL J;
Indirizzi:
AGR & AGRI FOOD CANADA,RES CTR CHARLOTTETOWN PE C1A 7M8 CANADA AGR & AGRI FOOD CANADA,RES CTR OTTAWA ON K1A 0C6 CANADA AGR & AGRI FOOD CANADA,RES CTR HARROW ON N0R 1G0 CANADA UNIV GUELPH,AGR & AGRI FOOD CANADA,RES CTR GUELPH ON N1G 2W1 CANADA JACQUES WHITFORD ENVIRONM LTD DARTMOUTH NS B3B 1W8 CANADA AGR & AGRI FOOD CANADA,RES CTR DELHI ON N4B 2W9 CANADA
Titolo Testata:
Soil & tillage research
fascicolo: 3-4, volume: 41, anno: 1997,
pagine: 191 - 201
SICI:
0167-1987(1997)41:3-4<191:IOTPOO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
PARTICLE-SIZE FRACTIONS; LONG-TERM TILLAGE; MATTER; DECOMPOSITION; CULTIVATION; PLACEMENT; DYNAMICS; CORN; OHIO;
Keywords:
TILLAGE; ORGANIC MATTER; CARBON; NITROGEN; SOIL PROFILE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
D.A. Angers et al., "IMPACT OF TILLAGE PRACTICES ON ORGANIC-CARBON AND NITROGEN STORAGE INCOOL, HUMID SOILS OF EASTERN CANADA", Soil & tillage research, 41(3-4), 1997, pp. 191-201

Abstract

Soil organic matter storage capacity in agroecosystems varies with soil type, climate and agricultural management practices. The effects ofdifferent tillage systems on organic C and N storage were determined for a range of soils of eastern Canada mainly under continuous corn and small grain cereal production. Soil profiles from eight sites on which comparative tillage experiments had been performed for up to 11 years were sampled to a 60 cm depth in four increments (0-10, 10-20, 20-40 and 40-60 cm). Organic C and N contents and dry bulk density were determined for each sampling depth. Bulk density measurements showed that the total soil mass in the soil profiles was not influenced by the tillage systems. No significant differences were found between tillage treatments in the total organic C and N storage down to 60 cm depth; the soil profiles under no-till (NT) and chisel plowing (CP) generally did not contain more C and N than those under conventional moldboard plowing (MP). However, the depth distribution of soil C and N varied with tillage. In the surface 0-10 cm, C and N contents were higher underNT than under MP, whereas at deeper levels (20-40 cm) the reverse trend was observed. It is concluded that under eastern Canadian conditions, where crop production and residue inputs are not affected by tillage, reduced tillage systems would not, result in the storage of more soil organic matter in the entire soil profile at least in a 5-10 year period. Placement of the residues would be a major factor influencing the C and N distribution at specific depths.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 10:59:49