2012 Annual Report 1a.Objectives (from AD-416): Construct a WWW-based program to predict cross-pollination and nut set in almond orchards based on weather conditions, orchard design, and bee foraging population size. 1b.Approach (from AD-416): A WWW-based model will be constructed that predicts cross-pollination and nut set in almond orchards. The model will be designed as a 3-tier architecture which will include a web presentation layer, a model logic layer, and a data access layer. The web presentation layer will be based on the ASP.NET technology to allow for a rich internet user experience. The data access layer will interface with the MySQL Server database engine, the standard at the Carl Hayden Bee Research Center. The model logic layer will be written in the C++ language. Once completed, the model will be able to be run from anyone with an internet connection using standard web browsers. 3.Progress Report: The project relates to the objectives of the parent project by demonstrating the effects of colony availability and population size on almond nut set. The WWW-based program was constructed and can be accessed on the Carl Hayden Bee Research Center Web site. Validation of bloom progression and nut set predictions are being made by comparing them with actual data collected over the past 4 years from the various growing regions in California.