title: Sensitivity analysis of the STICS-MACRO model to identify cropping practices reducing pesticides losses.
abstract: STICS-MACRO is a process-based model simulating the fate of pesticides in the soil-plant system as a function of agricultural practices and pedoclimatic conditions. The objective of this work was to evaluate the influence of crop management practices on water and pesticide flows in contrasted environmental conditions. We used the Morris screening sensitivity analysis method to identify the most influential cropping practices. Crop residues management and tillage practices were shown to have strong effects on water percolation and pesticide leaching. In particular, the amount of organic residues added to soil was found to be the most influential input. The presence of a mulch could increase soil water content so water percolation and pesticide leaching. Conventional tillage was also found to decrease pesticide leaching, compared to no-till, which is consistent with many field observations. The effects of the soil, crop and climate conditions tested in this work were less important than those of cropping practices. STICS-MACRO allows an ex ante evaluation of cropping systems and agricultural practices, and of the related pesticides environmental impacts.
authors.affiliation: UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France.
authors.forename: Sabine-Karen
authors.initials: SK
authors.lastname: Lammoglia
authors.affiliation: UMR Agronomie, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France.
authors.forename: David
authors.initials: D
authors.lastname: Makowski
authors.affiliation: Department of Soil and Environment, Swedish University of Agricultural Sciences, Box 7014, 750 07 Uppsala, Sweden.
authors.forename: Julien
authors.initials: J
authors.lastname: Moeys
authors.affiliation: UMR AGIR, INRA, Auzeville, 31326 Castanet-Tolosan, France.
authors.forename: Eric
authors.initials: E
authors.lastname: Justes
authors.affiliation: UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France.
authors.forename: Enrique
authors.initials: E
authors.lastname: Barriuso
authors.affiliation: UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France. Electronic address: laure.mamy@inra.fr.
authors.forename: Laure
authors.initials: L
authors.lastname: Mamy
mesh_terms: D000383:Agriculture / Q000379:methods*; D004777:Environment; D008956:Models, Chemical; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants
chemical_list: D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants
keywords: Conservation agriculture; Morris sensitivity analysis; Pesticide leaching; STICS-MACRO model; Sustainable cropping practices; Water percolation