The normalizing the use of slurry on farms as fertilizer and amendment Cantabria organic farms of dairy cattle and prevent them from becoming toxic wa

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The normalizing the use of slurry on farms as fertilizer and amendment Cantabria organic farms of dairy cattle and prevent them from becoming toxic waste for physical-chemical or biological have been the basis of the project, from the Centre Agrarian Research and Training (CIFA), has been developed in the region. Save much of the costs with farmers in the management and use of this material, is another advantage is achieved with the implementation of this study.
Under the name "Identification and minimization of health risks associated with the agricultural use of effluent from dairy cattle farms," coordinated by Patricia Santorum and developed from the Area of Animal Production Systems of CIFA, is part of a research paper recently presented , thanks to which we have obtained the necessary knowledge to determine appropriate management of effluent organic pastoral areas, relying on their status as non-organic substances and hazardous waste.
The original idea of the study was to convey that the application of manure and slurry on forage crops is widely accepted as the method of valuation less harmful to the environment and, on the other hand, this management system should be completed with hygienic standards medical devices to comply with new European regulations on animal feed.
The slurry sampling and types of treatment, which were conducted from May 2004 until November 2007, occurred in farms of small and medium size of the region, ie those whose annual milk quota was less than 500 000 kg.
"This project aimed to define the storage systems, wastewater treatment and application being made in Cantabria. In this way, we have determined the levels of fertilizers (nitrogen, phosphorus and potassium) and micro-organisms in different types of dung, to analyze the health risk present in livestock effluents depending on the type of operation and the treatment they receive, validate the effectiveness of the storage of slurry and assess the health risk involved in irrigation of fodder crops with effluent from dung, "says Santorum, principal investigator of the project.
Following this approach, we have managed to write a series of recommendations for farmers to facilitate reducing the risks associated with handling of effluents.
Each of the farmers have been collaborators reported the composition of the slurry, and the amount recommended to be paid on crops.
These calculations were done in accordance with Community legislation and autonomous on the protection of waters against pollution caused by nitrates from agricultural sources. They were also informed the composition of their lands and the needs of phosphorus, potassium and lime.
Agricultural policy
According to direct aid created under the Agricultural Policy of the European Union relating to good agricultural and environmental conditions, in northern Spain have been established as enforceable conditions, including limiting the stocking or the submission of a alternative plan or withdraw their waste management.
In this context, it has become necessary to undertake the study of farming and design a proper waste management.
In this regard, the application of manure and slurry on forage crops is recognized as the method of recovery, provided that the distribution of the residue does not exceed the nitrogen levels recommended by the European regulations.
"In the dairy cattle farms, slurry is usually stored in the muck until the weather conditions and use of the fields are suitable for irrigation on agricultural land. However, this management system should be supplemented by medical and hygienic criteria appropriate to the new rules on animal feed and fertilizer products, "says the coordinator Patricia Santorum. "The recent regulation is to ensure the hygiene of foodstuffs for animal production and, in this way, protecting human and animal health."