Authors: D.E. Darby and J.C. Jofriet
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Published in: CBE Journal » CBE Journal Volume 35 (1993)

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Description: Rational determination of pres sureof silage in horizontal silos requires knowledge of the density of the silage. Silage density was measured in 21 silos on farms in Alberta in the winter of 1989-90. Depth of silage ranged from 3.0 to 6.5 m. The sampling technique and results are presented. Average dry-matter density was found to be 232 kg/m for barley silage with a coefficient of variation of 10.5%, for grass silage the dry-matter density was 260 kg/m with a coefficient of variation of 13.1%. There was no significant variation in silage density with depth. These values are slightly higher than those published in the trade literature such as the Canadian Farm Buildings Handbook, but somewhat lower than that found for com silage in a 6.0 m deep silo in Ontario. The results of this project and extensive work by Messer and Hawkins in the United Kingdom and by Zhao and Jofriet in Ontario have been used to provide recommendations for estimating silage density. It is suggested that the Zhao and Jofriet recommendation for silage density be adopted for silo content estimates, while for struc tural design a 10% higher value should be chosen.

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Citation: D.E. Darby and J.C. Jofriet 1993. DENSITY OF SILAGE IN HORIZONTAL SILOS. Canadian Agricultural Engineering 35(4):275-280.
Volume: 35
Issue: 4
Pages -
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Date: 1993
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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