Wednesday, 9 November 2005 - 2:00 PM
212-5

Constructing Time-Lapse Videos of Plant Growth and Development: Trials, Tribulations, and End Uses.

Charles Kennedy, Dept. of Agronomy and Environmental Management, LSU Ag Center, Department of Agronomy , 104 Sturgis Hall, Louisiana State University, Baton Rouge, LA 70803

Describing how crop plants grow and develop over the course of a growing season within the confines of a lecture-only crop production course needs as much visual aid support as possible. After searching unsuccessfully for specific time-lapse video sequences of crop growth I attempted to develop them on my own. Several crop species were grown under artificial, high intensity lighting and time-lapse photographed at various stages of growth and development. Different still cameras (35mm film and digital) and subsequent video producing techniques were used over several years to construct time-lapse sequences. Most early video transfer methods did not work very well but the availability of digital slide scanners and digital cameras coupled with animation software has enabled me to incorporate these sequences into class presentations. These time-lapse videos (avi and mpeg files in Power Point presentations) are used primarily as descriptive aids, but are also used for class inquiry sessions. An example of the latter would be comparing time-lapse sequences as a platform for discussing the effect of temperature on growth in relation to time.

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