Affiner votre recherche
Résultats 1-10 de 29
Corn response to six annual Cu-enriched pig manure applications to three soils.
1988
Gettier S.W. | Martens D.C. | Kornegay E.T.
Does a decade of soil organic fertilization promote copper and zinc bioavailability to an epi-endogeic earthworm?
2023
Laurent, Céline | Bravin, Matthieu | Blanchart, Eric | Crouzet, Olivier | Pelosi, Céline | Lamy, Isabelle
While long-term organic fertilizer (OF) applications tend to decrease copper (Cu) and zinc (Zn) availability in agricultural soils, earthworm bioturbation has been reported to have the opposite effect. Thus, the consequences of OF amendments in earthworm-inhabited soils on Cu and Zn bioavailability to earthworms are still under debate. Here, we assessed the effect of a decade of agronomically realistic OF applications on Cu and Zn availability in earthworm-inhabited soils and the consequences on Cu and Zn bioavailability to earthworms. An epi-endogeic species (Dichogaster saliens) was exposed in microcosms to three field-collected soils that had received either no, mineral, or organic fertilization for a decade. Dissolved organic matter (DOM) properties (i.e., concentration, aromaticity, and binding properties toward Cu), pH, and Cu and Zn availability (i.e., total concentration and free ionic activity) were determined in the solution of the soil containing earthworms. Cu and Zn bioavailability was assessed by measuring the net accumulation (ng) and concentration of Cu and Zn in earthworms (mg kg−1). Despite soil Cu and Zn contamination induced by a decade of OF applications, organic fertilization induced an increase in soil pH and DOM properties that drove the reduction of Cu and Zn availability in earthworm-inhabited soils, while bioturbation had little effect on soil pH, DOM properties, and Cu and Zn availability. Consistently, Cu and Zn bioavailability to earthworms did not increase with OF applications. From an ecotoxicological perspective, our results suggest that agronomically realistic applications of OF for a decade should not pose a risk to earthworms in terms of Cu and Zn net accumulation, but further studies have to be undertaken to understand consequent long-term toxicity after exposure.
Afficher plus [+] Moins [-]Copper and zinc solution and interaction on a schistic soil and two sewage sludges
1993
Eulalia de Mesquita, M. | Vieira e Silva, J.M. | Sequeira, E.M. | Domingues, H. (Department of Pedology, National Agronomical Station, Oeiras (Portugal))
An explanation for the apparent losses of metals in a long-term field experiment with sewage sludge
1989
McGrath, S.P. | Lane, P.W. (AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ (UK))
Consequences of new scientific findings for future abatement of ammonia emissions
1998
Erisman, J.W. | Monteny, G.J. (ECN, P.O. Box 1, 1755 ZG Petten (Netherlands))
Making the link between science and policy: controlling N losses from agriculture in Canada
1998
Kimpe, C.R. de | MacDonald, K.B. (Agriculture and Agri-Food Canada, Sir John Carling Building, Ottawa, Ontario, K1A 0C5 (Canada))
Analysis of environmental policy measures aimed at reducing nitrogen leaching at the farm level
1998
Hasler, B. (National Environmental Research Institute, Department for Policy Analysis, P.O. Box 358, 4000 Roskilde (Denmark))
Environmental performance indicators for nitrogen
1998
Hanegraaf, M.C. (Centre for Agriculture and Environment, P.O. Box 10015, 3505 AA Utrecht (Netherlands))
Recovery of valuable nitrogen compounds from agricultural liquid wastes: potential possibilities, bottlenecks and future technological challenges
1998
Rulkens, W.H. | Klapwijk, A. | Willers, H.C. (Wageningen Agricultural University (WAU), Wageningen (Netherlands))
Mineral accounting: the way to combat eutrophication and to achieve the drinking water objective
1998
Brandt, H.M.P. van den | Smit, H.P. (Ministry of Agriculture, Nature Management and Fisheries, Den Haag (Netherlands))
