Abstract
In Denmark the Danish Agricultural Advisory Centre has for some years used the soil content of mineral nitrogen in spring in fertilizer recommendations. Since 1986 these recommendations have been based on soil samples carried out at all intersections of a nationwide 7 km square grid in Denmark. It was hoped that it may be possible to replace soil measurements with values of soil mineral-N calculated with a model. The Danish simulation model DAISY, which among other things simulates changes in the inorganic N content of the soil, was evaluated with respect to the Nmin content in the early spring under bare soil and under winter cereal. For both situations the precrop was cereals. The performance of the model was evaluated in farming systems receiving mineral fertilizer and in some instances organic manures. The results were analysed according to type of subsoil: sandy or loamy. Predictions were 11 kg N ha−1 less than the measured values as a mean and the differences between simulated and measured values were high for fields receiving organic manures. Predictions were less than ± 10 kg N ha−1 of measured values in 25–58% of cases for the different types of crop cover at the time of soil sampling, type of subsoils and fertilizer strategies, respectively. Predictions were less than ± 20 kg N ha−1 of measured values in 48–89% of cases for the different situations. The best predictions were obtained for sandy subsoils covered by winter cereal and supplied with mineral fertilizer only. It is concluded that the quality of the data used as input in the model has to be increased and that further developments of parts of the DAISY model are needed before modelling can be a useful tool in N fertilizer recommendations.
Similar content being viewed by others
References
Allerup P & Madsen H (1980) Accuracy of point precipitation measurements. Nord. Hydrol. 11: 57–70
Blicher-Mathiesen G, Grant R, Jensen C & Nielsen H (1990) Landovervågningsoplande. Vandmiljøplanens overvågnings-program 1989. Hovedrapport. Faglig rapport 6, Miljøministeriet, Danmarks Miljøundersøgelser
Butland J (1980) A review of methods for curve and function drawings (KW Brodlie). Mathematical methods in computer graphics and design. Academic Press, London, UK
Hansen J F, Sibbesen E, Kjellerup V, Christensen B T, Sommer S, Larsen K E & Thomsen I (1989) Husdyrgødning og dens anvendelse. Tidsskr. Planteavl. S. 1809
Hansen J F, Olesen J E, Munk I, Henius U M, Høy J J, Rude S, Steffensen M, Huld T, Guul-Simonsen F, Danfaer A & Mikkelsen S (1990a) Kvælstof i husdyrgødning. Statusredegørelse og systemanalyse vedrørende kvælstofudnyttelsen. Tidsskr. Planteavl. S. 2100
Hansen S, Jensen H E, Nielsen N E & Svendsen H (1990b) DAISY. A Soil Plant Atmosphere System Model. NPO-Research report A10. The National Agency for Environmental Protection, Copenhagen, Denmark
Hansen S, Jensen H E, Nielsen N E & Svendsen H (1991) Simulation of nitrogen dynamics and biomass production in winter wheat using the Danish simulation model DAISY. Fert. Res. 27: 245–259
Hvelplund E & Østergaard H S (1980) Efterafgrøders kvælstofudnyttelse i relation til gødskningsøkonomi og miljø. Danish Agricultural Advisory Centre, Århus, Denmark
Jacobsen O H (1989) Unsaturated hydraulic conductivity for some Danish soils. Methods and characterization of soils. Tidsskr. Planteavl. S. 2030
Jensen C, Stougaard B S & Olsen P (1994a) Simulation of water and nitrogen dynamics at three Danish locations by use of the DAISY model. Acta Agric. Scand. 44: 75–83
Jensen C, Stougaard B & Østergaard H S (1994b) Simulation of the nitrogen dynamics in Denmark (1989–1993). Soil Use Manage. 10: 111–118
Kunze R J, Uehara G & Graham K (1968) Factors important in the calculation of hydraulic conductivity. Soil Sci. Soc. Am. Proc. 32: 760–765
Madsen H B (1985) Distribution of spring barley roots in Danish soils of different texture and under different climatic conditions. Plant Soil 88: 31–43
Madsen H B (1991) Soil mapping in Denmark - The Danish Soil Database System.In: Hodgson J M (ed.) Soil Survey - A Basis for European Soil Protection. Silsoe, UK. Dec. 11–13 1989: 173-180
Makkink G F (1957) Ekzameno de la formula de Penman. Neth. J. Agric. Sci. 5: 509–514
Mikkelsen H (1991) Klimadata til kvadratnettet. Vand Miljø4: 158–160
Nielsen K A, Pedersen C Å, Pedersen H E & Pedersen J B (1992) Håndbog for plantedyrkning. Landbrugets informationskontor, Århus, Denmark
Otter-Nacke S & Kuhlmann H (1991) A comparison of the performance of N simulation models in the prediction of Nmin on farmers' fields in the spring. Fert. Res. 27: 341–349
Pedersen C Å(1992) Mængde og indhold i næringsstoffer i husdyrgødning. Planteavlsorientering 249. Danish Agricultural Advisory Centre, Århus, Denmark
Powlson D S, Poulton P R, Addiscott T M & McCann D S (1989) Leaching of nitrate from soils receiving organic or inorganic fertilizers continuously for 135 years.In: Hansen J A & Henriksen K (eds.) Nitrogen in Organic Wastes Applied to Soils. Academic Press, London, UK
Smith K A & Chambers B J (1993) Utilizing the nitrogen content of organic manures on farms - problems and practical solutions. Soil Use Manage. 9: 105–112
Stougaard B, Jensen C & Østergaard H S (1992) An approach to use modelling of N-balances for improving fertilizer recommendations.In: Francois E, Pithan K & Bartiaux-Thill N (eds.) Nitrogen Cycling and Leaching in Cool and Wet Regions of Europe: 68-69. Commission of European Communities, Gembloux
Østergaard H S & Mamsen P (1990) Kvadratnet for nitratundersøgelser i Danmark. Oversigt 1986–89. Danish Agricultural Advisory Centre, Århus, Denmark
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jensen, C., Stougaard, B. & Østergaard, H.S. The performance of the Danish simulation model DAISY in prediction of Nmin at spring. Fertilizer Research 44, 79–85 (1995). https://doi.org/10.1007/BF00750796
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00750796