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Simulating Nitrogen Dynamics in Agricultural Soils Fertilized with Pig Slurry and Urea

Rosa Marchettia,*, Gilda Ponzonib and Pasquale Spallaccia

a Istituto Sperimentale Agronomico (ISA), Sezione di Modena, Ricerche agronomiche applicate all'ambiente settentrionale, Viale Caduti in Guerra 134, I-41100 Modena, Italy
b Regione Emilia Romagna, Soil Bureau, Viale Silvani 4/3, 40122, Bologna, Italy



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  		Fig. 1. Location of the study area in the Emilia Romagna region, Italy.

 


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  		Fig. 2. Measured and simulated nitrate content throughout the experimental period in the top-1.2-m soil profile, under corn and wheat fertilized with pig slurry and/or urea, at the Piacenza sites. Triangles are measured values and continuous lines are simulated values. Bars are the standard deviation of the mean measured values. The thin lines are the standard deviation of the simulated values.

 


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  		Fig. 3. Measured and simulated nitrate content in the top-0.6-m soil profile under corn fertilized with pig slurry and/or urea at San Prospero. Triangles are measured values and continuous lines are simulated values.

 




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