Modeling inter-species competition is a natural application for dynamic simulation models of agricultural systems. We extended a dynamic simulation model of the soil-plant-atmosphere system, GAPS, to include the case where multiple plant species are growing in competition. The competition model was implemented as an object hierarchy which exchanges information with a crop model hierarchy by mea...

Information on the outlook of yield and production of crops over large regions is essential for government services dealing with import and export of food crops, for agencies playing a role in food relief, for international organisations with a mandate in monitoring the world food production and trade, as well as for commodity traders. In Europe, such information is provided by the MARS (Monito...

conclusions using the simulation as a decision making tool helps us to decide how we can reduce outpatient's waiting time. comparison of outputs of this scenario and the based- case scenario in simulation model shows that combining physician's work time changing with patient's admission time changing (scenario 9) would reduce patient waiting time about 73.09%. due to dynamic and complex nature ...

Field crop yield prediction is crucial to grain storage, agricultural field management, and national agricultural decision-making. Currently, crop models are widely used for crop yield prediction. However, they are hampered by the uncertainty or similarity of input parameters when extrapolated to field scale. Data assimilation methods that combine crop models and remote sensing are the most eff...

J. KO 1*, G. PICCINNI 2, W. GUO 3 AND E. STEGLICH 4 1United States Department of Agriculture–Agricultural Research Service, Agricultural Systems Research Unit, 2150 Centre Avenue, Building D, Suite 200, Fort Collins, CO 80526, USA 2Monsanto Company, 700 Chesterfield Parkway West, Chesterfield, MO 63017, USA 3South Plains Precision Ag, 2810 N. Quincy, Plainview, TX 79072, USA Blackland Research ...

Predicting impacts of climate change or alternative management on both food production and environment safety in agroecosystems is drawing great attention in the scientific community. Most of the existing agroecosystem models emphasize either crop growth or soil processes. This paper reports the latest development of an agroecosystem model (Crop-DNDC) by integrating detailed crop growth algorit...