Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 580, Issue -, Pages 117-129Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.10.010
Keywords
STICS-MACRO model; Morris sensitivity analysis; Conservation agriculture; Sustainable cropping practices; Water percolation; Pesticide leaching
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Funding
- French Ecophyto plan - Ministry in charge of Agriculture (Perform project)
- French Ministries in charge of Ecology and Agriculture (Ecopest project)
- INRA
- Perform project
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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. (C) 2016 Elsevier B.V. All rights reserved.
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