The development of models simulating nitrogen transport in soil and manure

Authors: S. Hengnirum, S. Barrington, S.D. Prasher and D. Lyew
Description: Three submodels were developed for simulating the transport of nitrogen in a manureamended soil. RUNOFFand LEACH are the submodels for simulating nitrogen losses by runoff after a rainfall and for leaching into the subsoil. The effects of soil adsorption and the presence of both microand macropores were considered in the development of LEACH. The simulation of adsorption was accomplished by a third model called ADSORP which was coupled with LEACH. The consideration of macropores in addition to micropores contributed towards a more realistic simulation of leaching and adsorption in the soil. The three submodels were integrated into a model called MANIMEA (Manurial Nitrogen Management: Environmental Aspects). The MANIMEA model simulated the transformation and transport processes affecting nitrogen in a manure-soil system for a specified soil and meteorological conditions so as to predict the fate and distribution of nitrogen in this system. Such a model is a useful tool in the management of manure application so as to lessen the environmental impact of this manure. The integration of RUNOFF, LEACH, and ADSORP into MANIMEA was successfully realized. The simulation results indicated that the submodels were able to generate results that fell within reasonable limits.
Citation: S. Hengnirum, S. Barrington, S.D. Prasher and D. Lyew 1999. THE DEVELOPMENT OF MODELS SIMULATING NITROGEN TRANSPORT
IN SOIL AND MANURE. Canadian Agricultural Engineering 41(1):35-45.
Volume: 41
Issue: 1
Publisher: Canadian Society for Bioengineering
Date: 1999
Type: Text.Article
Format: PDF
Coverage: Canada
Language 1: en
Rights: Canadian Society for Bioengineering
Located in: Volume 41 (1999)