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Titolo:
Soil enzyme activities following paper sludge addition in a winter cabbage-sweet corn rotation
Autore:
Gagnon, B; Lalande, R; Simard, RR; Roy, M;
Indirizzi:
Agr & Agroalimentaire Canada, Ctr Rech Sols & Grandes Culture, St Foy, PQ G1V 2J3, Canada Agr & Agroalimentaire Canada St Foy PQ Canada G1V 2J3 PQ G1V 2J3, Canada Univ Laval, Ctr Rech Hort, St Foy, PQ G1K 7P4, Canada Univ Laval St Foy PQ Canada G1K 7P4 Rech Hort, St Foy, PQ G1K 7P4, Canada
Titolo Testata:
CANADIAN JOURNAL OF SOIL SCIENCE
fascicolo: 1, volume: 80, anno: 2000,
pagine: 91 - 97
SICI:
0008-4271(200002)80:1<91:SEAFPS>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERSISTENCE;
Keywords:
papermill sludge; soil enzyme; cabbage; corn;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Lalande, R Agr & Agroalimentaire Canada, Ctr Rech Sols & Grandes Culture, 2560 Blvd Hochelaga, St Foy, PQ G1V 2J3, Canada Agr & Agroalimentaire Canada 2560 Blvd Hochelaga St Foy PQ Canada G1V 2J3
Citazione:
B. Gagnon et al., "Soil enzyme activities following paper sludge addition in a winter cabbage-sweet corn rotation", CAN J SOIL, 80(1), 2000, pp. 91-97

Abstract

Combined primary and secondary papermill sludge (PS) is a good source of Cand other nutrients for soils devoted to intensive horticultural production. A field study was conducted to evaluate the effect of PS, spring-appliedalone or in combination with ammonium nitrate (AN), on the enzymatic activity of a Bedford clay (Humic Gleysol) in the province of Quebec, Canada. The experiment was started in 1996 with winter cabbage (Brassica oleracea var. capitata L.) and continued in 1997 and 1998 on the same plots with sweet corn (Zea mays L.). The PS was applied at 0 (control), 8, 16, 32 and 65 Mg ha(-1) in 1996 and at 44% of these rates in 1997. No sludge was applied in 1998. Additional treatments consisted of AN applied yearly at 100% of the plant N requirements and a PS and AN combination. Soil arylsulfatase and acid and alkaline phosphatase activities were measured at three different times in each growing season. The PS rate linearly increased the soil acid phosphatase activity in all 3 yr. In contrast, the alkaline phosphatase and arylsulfatase activities were enhanced in 1997 by the 8-16 Mg PS ha(-1) treatments, whereas larger amounts of PS showed activity comparable to the control. The second PS application promoted phosphatase activities mostly in fall, but did not sustain arylsulfatase activity. The AN gave lower phosphataseactivities than PS, and depressed arylsulfatase. Addition of AN to PS increased only acid phosphatase activity as compared with PS alone or the control. This study indicated that addition of PS improved enzyme activity of this horticultural soil but rates in excess to 32 Mg ha(-1) may be detrimental.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 09:43:54