2011 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 programming of the WWW-based mathematical model to predict nut set in almond orchards is complete and the software can be found at: http://gears.tucson.ars.ag.gov/almopol/. On-line tutorials are being constructed for first time users. Nut set predictions from the model are being compared with actual field data. The software will supply information on yields that are site specific, and aid in decisions for new orchard plantings and hive per acre requirements based on the effects on pollination. Monitoring of progress on this project is accomplished by conference calls, laboratory meetings, annual reports and presentations to the Almond Board of California.