A new video, "From Harvest to Feed: Understanding Silage Fermentation," is available from Penn State University. It explains the principles and practices involved in making high-quality silage, and the steps that take place during the process. It also includes recommended silage dry matter content and particle sizes for different storage structures. Cost is $35.

To order, send a check, to Penn State University, to Jud Heinrichs, Department of Dairy and Animal Science, 324 Henning Building, University Park, Pa. 16802. Or, order online at: www.das.psu.edu/dcn/videos