Table 1 Reliability of mathematical model for accumulation of alpha-acids in hop cultivar Aurora in location of Gregurovec, Croatia during the six vegetation periods (2001-2006*)
Crop year | Sum of effective temperatures (°C) | Sum of total rainfalls (mm) | ET 0 in July | Calculated content of alpha-acids (%) in dry matter | Analysed content of alpha-acids (%) in dry matter (mean) | Difference (alpha calc. – alpha analysed) |
|---|---|---|---|---|---|---|
2001 | 1698.4 | 393.7 | 4.26 | 10.9 | 11.6 | 0.7 |
2002 | 1932.1 | 425.8 | 4.20 | 11.3 | 11.1 | 0.2 |
2003 | 1994,4 | 175.2 | 5.5 | 2.5 | 6.7 | - 4.2 (n/r) |
2004 | 1856.7 | 398.5 | 4.28 | 10.2 | 10.0 | 0.2 |
2005 | 1920.8 | 403.3 | 4.38 | 10.1 | 9.7 | 0.5 |
2006 | 1872.1 | 382.0 | 4.42 | 9.2 | 9.3 | 0.1 |