The decision to chop corn for silage should be made when there is no further potential to increase grain dry matter and whole plant moisture is in the proper range for the storage structure. The proper harvest moisture content is the same for drought stressed and normal corn. Recommended whole plant moisture contents are 65-70% in horizontal silos (trenches and bunkers), 60-70% for bags, 60-65% for upright stave silos, and 50-60% for upright oxygen limiting silos.
Iowa State University
Lang, Brian J., "Silage Harvest of Drought-Stressed and Severely Lodged Corn" (2020). Integrated Crop Management News. 2648.
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