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Density and DM% of silage and hay
| Silage types |
DM% |
Wet weight silage kg/m3 in stack or hay in bale |
DM silage kg/m3 in stack/bale |
Density in wagon kg/m3 in stack |
| Direct cut grass |
13-18 |
700-900 | 120-160 | - |
| Wilted grass |
20-30 |
600-800 | 160-180 | - |
| Baleage |
35-40 | 500 | 130-180 | - |
| Hay - small bales |
85 | 18-25 | 15-20 | - |
| Hay - round bales |
85 | 180-300 | 150-20 | - |
| Maize stack |
33-38 | 500-760 | 170-250 (average 200) | 80-120 |
| Maize bunker |
33-38 |
600-820 | 200-270 (average 220) | 80-120 |
|
Maize deep bunker (not common 5% of bunkers) |
33-38 | 760-900 | 250-300 |
80-120 |
Storage space required for grass and maize silage
| Silage storage |
Tonnes DM multiplied by: |
Example |
| Maize stack |
5.0 |
e.g. 50 t DM x 5.0 = 250m3 |
| Maize bunker |
4.4 |
e.g. 50 t DM x 4.4 = 222m3 |
| Grass silage |
5.7 |
e.g. 50 t DM x 5.7 = 285m3 |
Density and storage of other feeds
| Density (kg/m3) |
Storage (m3/tonne) | |
| Grains - barley |
630 |
1.6 |
| Grains - wheat |
760 | 1.3 |
| PKE |
630-750 | 1.35-1.6 |
| Carrots |
630 | 1.6 |
| Onions (dry) |
630-725 | 1.4-1.6 |
| Potatoes |
660 | 1.5 |
