Application of Environmental Potential Risk Indicator for Pesticides (EPRIP) to evaluate the environmental risks of Alternate Wetting and Drying irrigation for rice in northern Italy
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Data di Pubblicazione:
2022
Citazione:
Application of Environmental Potential Risk Indicator for Pesticides (EPRIP) to evaluate the environmental risks of Alternate Wetting and Drying irrigation for rice in northern Italy / D. Voccia, G. Fragkoulis, A. Facchi, O. Gharsallah, F. Ferrari, A. Tediosi, L. Botteri, M. Romani, E. Cadei, L. Lamastra, M. Trevisan. ((Intervento presentato al convegno Interregional Conference Sustainable Production in Agroecosystems with Water Scarcity tenutosi a Albacete : 5-7 September nel 2022.
Abstract:
Environmental Potential Risk Indicator for Pesticides (EPRIP) (Reus et al., 2002) was used to estimate
the environmental impact of pesticides used in rice production with traditional and water-saving
irrigation methods in the main Italian rice district (Lomellina, PV). EPRIP is based upon the Exposure
Toxicity Ration (ETR) of the Predicted Environmental Concentration (PEC) (Padovani et al., 2004). A
modified version of MED-Rice tool was used in order to evaluate PECs of seven pesticides into
groundwater, surface water and paddy sediment. ETR and PEC were estimated at a local scale (field
and surroundings), with short-term toxicological parameters (NOEC) and, therefore, reflecting a
worst-case scenario, assuming that organisms are subjected to maximum exposure. ETR were then
converted into risk points (RPs) accordingly to the following table (Trevisan et al., 2009):
Range of ETR RISK POINT
<0.01 1
0.01-0.1 2
0.1-1.0 3
1.0-10.0 4
>10.0 5
An experimental platform was set up in the main Italian rice district (Lomellina, PV), during the
agricultural seasons 2019 and 2020, to compare different irrigation management options: in
particular, wet seeding and traditional flooding (WFL) and wet seeding and alternated wetting and
drying (AWD) for the agricultural season 2019 were considered in this paper. Two widely used
pesticides (Clomazone, MCPA) were measured in irrigation water (inflow and outflow) and
groundwater. Estimated RPs following Trevisan et al. (2009) were compared to measured RPs, based
on the analysed Clomazone and MCPA concentrations in water samples collected from the
experimental fields. Finally, the overall EPRIP indicator was based on RPs to evaluate the probability
of the predicted concentration of contaminants in the environment to overcome a supposed
threshold. The results are calculated considering the probability of not exceeding the Risk Point 3
(RP3) by assuming a Poisson cumulative function.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Keywords:
Pesticide, EPRIP, Agro-ecological indicator, Water use
Elenco autori:
D. Voccia, G. Fragkoulis, A. Facchi, O. Gharsallah, F. Ferrari, A. Tediosi, L. Botteri, M. Romani, E. Cadei, L. Lamastra, M. Trevisan
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