Obiettivo To elucidate the role of natural organic colloidal matter on the transport of pesticides through soil.The project consists of laboratory and field lysimeter studies.1. In the laboratory the colloid facilitated leaching of four pesticides will be investigated in soil columns. Likewise the dissolved organic carbon in soil solution will be analysed in relation to macrochemical soil properties. Conditional association constants for pesticide binding to the bulk soil will be measured, in comparison to the adsorption of pesticides to selected dispersible colloidal fractions. This work will be supplemented by spectroscopic analyses in order to detect specific binding interactions between pesticides and dispersed colloidal fractions.2. On two field lysimeter sites, pesticide movement will be measured as affected by manuring treatments. Water movement and soil solution composition will be monitored. In selected samples, the dissolved organic carbon will be further characterized by advanced spectroscopic (infrared, electronic spin resonance, and fluorescence) and physical-chemical techniques e.g. differential thermogravimetric analysis.3. Parameters obtained in the laboratory study will be used in solute transport models, together with the macrochemistry and flow data from the lysimeter studies, to model the colloid content in the soil solution and the pesticide movement, both in solution and adsorbed on organic colloids. Campo scientifico natural sciencesphysical sciencescondensed matter physicssoft matter physics Programma(i) FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994 Argomento(i) 040201 - Risks from agricultural technologies and land use practices to soil, surface and groundwater quality Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Dienst Landbouwkundig Onderzoek Contributo UE Nessun dato Indirizzo 92,Oosterweg 9750 RA Haren Paesi Bassi Mostra sulla mappa Costo totale Nessun dato Partecipanti (3) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto ROTHAMSTED RESEARCH LIMITED Regno Unito Contributo UE Nessun dato Indirizzo West Common AL5 2JQ Harpenden, Herts Mostra sulla mappa Costo totale Nessun dato UNIVERSIDADE NOVA DE LISBOA Portogallo Contributo UE Nessun dato Indirizzo Quinta da Torre 2825 MONTE DA CAPARICA Mostra sulla mappa Costo totale Nessun dato Università degli Studi di Bari Italia Contributo UE Nessun dato Indirizzo Via Amendola 165/A 70126 Bari Mostra sulla mappa Costo totale Nessun dato