Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
EFFECTS OF TILLAGE, LIME, AND PHOSPHORUS ON SOIL-PH AND MEHLICH-3 EXTRACTABLE NUTRIENTS
Autore:
SIMARD RR; LAPIERRE C; SENTRAN T;
Indirizzi:
AGR CANADA,RES STN,2560 HOCHELAGA BLVD ST FOY G1V 2J3 PQ CANADA MINIST AGR PECHERIES & ALIMENTAT QUEBEC,SERV SOLS ST FOY G1P 3W8 PQ CANADA
Titolo Testata:
Communications in soil science and plant analysis
fascicolo: 9-10, volume: 25, anno: 1994,
pagine: 1801 - 1815
SICI:
0010-3624(1994)25:9-10<1801:EOTLAP>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
NO-TILLAGE; FERTILITY STATUS; ACID SOIL; FERTILIZATION; FRACTIONS; PHOSPHATE; NITROGEN; SYSTEMS; WHEAT; CORN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
R.R. Simard et al., "EFFECTS OF TILLAGE, LIME, AND PHOSPHORUS ON SOIL-PH AND MEHLICH-3 EXTRACTABLE NUTRIENTS", Communications in soil science and plant analysis, 25(9-10), 1994, pp. 1801-1815

Abstract

In Eastern Canada, barley yields are often restricted by soil acidityand low fertility as well as by structural degradation. The addition of lime and fertilizers and reduced tillage are proposed practices which may have a large impact on soil reaction and nutrient extractability. The objective of this work was to assess the impact of three years of differential tillage intensity (minimum, MT; chisel plow, CP; and moldboard plow, MP) and of lime and P additions on pH and Mehlich-3 extractable nutrients in the 0-7.5, 7.5-15, 15-30, and 30-45 cm soil layers of a Courval clay loam (fine, mixed, frigid, Aeric Humaquept). Thisstudy has shown that lime reaction was limited to the depth of incorporation in this clay soil. Lime, when added at moderate amounts, resulted in significant increases in soil phosphorus (P) extractability under all tillage intensities and reductions in extractabile zinc (Zn) and manganese (Mn), whereas potassium (K) and magnesium (Mg) were not significantly affected. Subsoil-extractable Mg was brought closer to thesurface in the plow treatments. The use of the chisel plow as primarytillage has resulted in increased soil P, K, and Mn extractabilities. Extractable Zn was larger under moldboard plowing. It is possible that, because of a better distribution of plant residues, larger microbial biomass activity under CP is responsible for these observations. Chisel plow is a good alternative to moldboard plowing in this soil as itincorporated lime and plant residues more evenly while reducing fixation of added fertilizers.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:46:05