Table 4 The pH, total and ammonium nitrogen, as well as the amounts of acids in fresh and ensiled hemp, maize and faba bean
Crop, year and treatment | Months | pH | NH3, g/kg | Percentage of dry matter | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Total N | Oxalic acid | Formic acid | Malic acid | Lactic acid | Acetic acid | VFA | ||||
Hemp 2008: | ||||||||||
Fresh | 0 | 8.0 | 0.6 | 1.2 | 0.6 | ND | 1.3 | ND | 0.3 | ND |
No additives | 4 | 5.5 | 0.6 | 1.2 | ND | ND | 1.8 | 7.8 | 1.7 | 0.6 |
8 | 6.4 | 1.8 | 1.3 | ND | ND | 2.5 | 7.3 | 2.2 | 0.6 | |
Formic acid | 4 | 4.2 | 0.6 | 1.3 | 1.2 | 4.3 | 2.1 | ND | 0.9 | 0.4 |
8 | 4.3 | 0.7 | 1.3 | 0.8 | 3.3 | 1.9 | 1.4 | 1.0 | 0.5 | |
Hemp 2009: | ||||||||||
Fresh | 0 | 7.0 | ND | 1.1 | 4.9 | ND | 0.7 | ND | 1.2 | ND |
No additives | 4 | 7.5 | 1.1 | 1.1 | 3.0 | ND | 2.7 | 2.2 | 1.0 | 0.4 |
8 | 8.1 | 0.9 | 1.0 | 2.7 | ND | 1.2 | 0.5 | 0.7 | 0.4 | |
Urea | 4 | 8.6 | 14.3 | 1.5 | 5.7 | ND | 0.8 | ND | 2.1 | 0.4 |
8 | 8.7 | 8.4 | 1.6 | 5.1 | ND | 0.9 | ND | 2.1 | 0.4 | |
Maize 2008: | ||||||||||
Fresh | 0 | 5.5 | 0.3 | 1.7 | 9.2 | ND | 2.0 | ND | ND | 1.0 |
No additives | 4 | 4.3 | 0.7 | 1.7 | 9.6 | 0.9 | 0.7 | 8.2 | 3.0 | 1.2 |
8 | 4.2 | 0.8 | 1.6 | 9.0 | 0.9 | 0.8 | 7.5 | 2.9 | 1.2 | |
Formic acid | 4 | 3.7 | 0.1 | 1.7 | 9.9 | 3.6 | 2.1 | ND | ND | 1.6 |
8 | 3.7 | ND | 1.7 | 6.8 | 2.4 | 1.4 | ND | ND | 0.4 | |
Faba bean 2008: | ||||||||||
Fresh | 0 | 5.6 | ND | 3.0 | 0.1 | ND | 2.3 | ND | 0.7 | 1.1 |
No additives | 4 | 4.6 | 0.8 | 3.0 | 0.1 | ND | 2.5 | 8.2 | 2.3 | 0.5 |
8 | 4.6 | 1.4 | 3.0 | 0.1 | ND | 2.7 | 8.8 | 2.3 | 0.5 | |
Formic acid | 4 | 4.2 | 0.5 | 3.1 | 0.2 | 3.7 | 3.2 | 2.1 | 0.9 | 0.7 |
8 | 4.1 | 1.4 | 3.1 | 0.4 | 4.0 | 3.6 | 2.7 | 1.0 | 0.6 | |