A risk-based decision tool for the management of organic waste in agriculture and farming activities (FARMERS).

Currently, specific management guidelines must be implemented for guaranteeing the safe reuse of organic waste in agriculture. With that aim, this work was focused on the development of a decision support tool for a safe and sustainable management of cattle manure as fertiliser in pastureland, to control and limit metal accumulation in soil and to reduce metal biotransfer from soil to other compartments. The system was developed on the basis of an environmental risk assessment multi-compartmental model. In contrast to other management tools, a long-term dynamic modelling approach was selected considering the persistence of metals in the environment. A detailed description of the underlying flow equations which accounts for distribution, human exposure and risk characterisation of metals in the assessed scenario was presented, as well as model parameterization. The tool was implemented in Visual C++ and is structured on a data base, where all required data is stored, the risk assessment model and a GIS module for the visualization of the scenario characteristics and the results obtained (risk indexes). The decision support system allows choosing among three estimation options, depending on the needs of the user, which provide information to both farmers and policy makers. The first option is useful for evaluating the adequacy of the current management practices of the different farms, and the remaining ones provides information on the measures that can be taken to carry out a fertilising plan without exceeding risk to human health. Among other results, maximum values of application rates of manure, maximum permissible metal content of manure and maximum application times in a particular scenario can be estimated by this system. To illustrate tool application, a real case study with data corresponding to different farms of a milk production cooperative was presented.

[1]  Claude Laguë,et al.  Development of expert system modeling based decision support system for swine manure management , 2010 .

[2]  P. Stålnacke,et al.  Integrated tool for risk assessment in agricultural management of soil erosion and losses of phosphorus and nitrogen. , 2009, The Science of the total environment.

[3]  P. Römkens,et al.  Spatially Explicit Integrated Risk Assessment of Present Soil Concentrations of Cadmium, Lead, Copper and Zinc in The Netherlands , 2008 .

[4]  J. Schoenau,et al.  Copper, zinc, and cadmium accumulation in two prairie soils and crops as influenced by repeated applications of manure , 2007 .

[5]  M R Teira-Esmatges,et al.  A method for livestock waste management planning in NE Spain. , 2003, Waste management.

[6]  B. J. Chambers,et al.  Heavy metal contents of livestock feeds and animal manures in England and Wales , 1999 .

[7]  B L Finley,et al.  Development of a standard soil-to-skin adherence probability density function for use in Monte Carlo analyses of dermal exposure. , 1994, Risk analysis : an official publication of the Society for Risk Analysis.

[8]  M. Tuller,et al.  Economical and environmental implications of solid waste compost applications to agricultural fields in Punjab, Pakistan. , 2009, Waste management.

[9]  J. J. Schröder,et al.  Permissible manure and fertilizer use in dairy farming systems on sandy soils in The Netherlands to comply with the Nitrates Directive target , 2007 .

[10]  M. Schuhmacher,et al.  Application of cattle manure as fertilizer in pastureland: estimating the incremental risk due to metal accumulation employing a multicompartment model. , 2006, Environment international.

[11]  C. Campbell,et al.  Risk of water contamination by nitrogen in Canada as estimated by the IROWC-N model. , 2009, Journal of environmental management.

[12]  M Schuhmacher,et al.  The use of Monte-Carlo simulation techniques for risk assessment: study of a municipal waste incinerator. , 2001, Chemosphere.

[13]  M. D. Pérez-Murcia,et al.  Use of composted sewage sludge in growth media for broccoli. , 2006, Bioresource technology.

[14]  Maximilian Posch,et al.  Dynamic modelling of metals - Time scales and target loads , 2009, Environ. Model. Softw..

[15]  S. Zee,et al.  Long-term effects of soil heterogeneity on cadmium behaviour in soil , 1991 .

[16]  Reimund P. Rötter,et al.  The integrated modeling system STONE for calculating nutrient emissions from agriculture in the Netherlands , 2003, Environ. Model. Softw..

[17]  Enrique Roca,et al.  Source identification of heavy metals in pastureland by multivariate analysis in NW Spain. , 2009, Journal of hazardous materials.

[18]  P. Römkens,et al.  Mapping the probability of exceeding critical thresholds for cadmium concentrations in soils in The Netherlands. , 2002, Journal of environmental quality.

[19]  C. de Meeûs,et al.  Assessment and management of risks arising from exposure to cadmium in fertilisers. I. , 2002, The Science of the total environment.

[20]  M. D. Pérez-Murcia,et al.  Salinity, organic content, micronutrients and heavy metals in pig slurries from South-eastern Spain. , 2008, Waste management.

[21]  S. Lofts,et al.  Deriving soil critical limits for Cu, Zn, Cd, and Pb: a method based on free ion concentrations. , 2004, Environmental science & technology.

[22]  M. Miranda,et al.  Contribution of cattle products to dietary intake of trace and toxic elements in Galicia, Spain , 2002, Food additives and contaminants.

[23]  T. Lexmond,et al.  Indicators of the sustainability of heavy-metal management in agro-ecosystems. , 1997, The Science of the total environment.

[24]  P K LaGoy,et al.  Estimated soil ingestion rates for use in risk assessment. , 1987, Risk analysis : an official publication of the Society for Risk Analysis.

[25]  K. Jones,et al.  Persistence and fate of polychlorinated biphenyls (PCBs) in sewage sludge-amended agricultural soils. , 1996, Environmental pollution.

[26]  N. Bolan,et al.  Distribution and Bioavailability of Trace Elements in Livestock and Poultry Manure By-Products , 2004 .

[27]  J. K. Hawley,et al.  Assessment of health risk from exposure to contaminated soil. , 1985, Risk analysis : an official publication of the Society for Risk Analysis.

[28]  V. Ranade,et al.  Risk Assessment of Chemicals-An Introduction, 2nd ed , 2009 .

[29]  G. Suter,et al.  Uptake of inorganic chemicals from soil by plant leaves: Regressions of field data , 2001, Environmental toxicology and chemistry.

[30]  K. Chan,et al.  A comparison of surface applied granulated biosolids and poultry litter in terms of risk to runoff water quality on turf farms in Western Sydney, Australia , 2009 .

[31]  Herbert E. Allen,et al.  Solid-Solution Partitioning of Metals in Contaminated Soils: Dependence on pH, Total Metal Burden, and Organic Matter , 2000 .

[32]  Natalie W. Harrington,et al.  Recommended distributions for exposure factors frequently used in health risk assessment. , 1994, Risk analysis : an official publication of the Society for Risk Analysis.

[33]  F. Cabrera,et al.  Metal accumulation in soil after application of municipal solid waste compost under intensive farming conditions , 2007 .

[34]  R. D. Sharp,et al.  Review and analysis of parameters for assessing transport of environmentally released radionuclides through agriculture , 1984 .

[35]  P. R. Warman,et al.  A review of the use of composted municipal solid waste in agriculture , 2008 .

[36]  D. C. Martens,et al.  Effect on soil and plant mineral levels following application of manures of different copper contents , 1976, Plant and Soil.

[37]  Theo Vermeire,et al.  Risk assessment of chemicals : an introduction , 2007 .

[38]  J. Azeez,et al.  Effect of nine years of animal waste deposition on profile distribution of heavy metals in Abeokuta, south-western Nigeria and its implication for environmental quality. , 2009, Waste management.

[39]  V. Cala,et al.  Heavy metal speciation and phytotoxic effects of three representative sewage sludges for agricultural uses. , 2006, Environmental pollution.

[40]  Claus G. Sørensen,et al.  An Assessment Tool applied to Manure Management Systems using Innovative Technologies , 2003 .