Compete is a dynamic simulation model developed to simulate the competition for soil nitrogen (N), soil moisture, and solar radiation between the main crop (e.g., maize (Zea mays L.)) and one or more ‘weed’ species. The Competemodel was developed by Dr. Andres Gustavo Berger Ricca as part of his dissertation work with Professor Susan Riha. It is a compilation of three well-developed models: model processes from two plant/crop growth models, and processes from a soil process model. These processes have been modified and new components added in Compete by Dr. Berger for more robust simulations of plant growth and competition. The Compete model has been made available by Jeff Melkonian through GitHub.
For more information: 
Cornell College of Agriculture and Life Sciences
www.cornell.edu