Table 1.
Crop rotations planned by SBN-Watch.
| Rotation | Cro | > p sequence | ||||
|---|---|---|---|---|---|---|
| 1 | Mixer1 | Cereals | Cereals | Mixer | ||
| 2 | Mixer | Cereals | WOSR | Cereals | Mixer | |
| 3 | Mixer | Cereals | WOSR | Cereals | Oil radish | Mixer |
| 4 | Julietta2 | Cereals | cereals | Julietta | ||
| 5 | Julietta | Cereals | WOSR | Cereals | Julietta | |
| 6 | Julietta | Cereals | WOSR | Cereals | Oil radish | Julietta |
Table 2
Chemical properties of field soil collected from Hagestad.
| pH | P–AL1 | K–AL2 | Clay | OM3 | Sand |
|---|---|---|---|---|---|
| mg 100 g jord−1 | % | ||||
| 7,1 | 12 | 6,4 | 1 | 8 | 73 |
Table 3
Sugar beets varieties tested at different Pi (eggs g−1 soil) levels in microplot experiments
| Varietal category | Pi (eggs g−1 soil) | |||||
|---|---|---|---|---|---|---|
| Year | Standard | Semi-tolerant | Tolerant | |||
| 2013 | Mixer1 | Rosalinda2 | Alexina3 | 7 | 13 | 17 |
| 2014 | Mixer | Rosalinda | Elora | 2 | 4 | 9 |
Figure 1:
A screenshot of the user interface showing a selected crop rotation and the estimated final SBN population (Pf) values, sugar yield (tonnes/ha), income (SEK/ha) and the reproduction factor (Rf) values.
Figure 2:
Crop sequence in rotation 1: standard sugar beets variety “Mixer”; Cereals; Cereals; “Mixer.” The SBN initial population (Pi eggs g−1 soil) = 2.
Figure 3:
Crop sequence in rotation 2: standard sugar beets variety “Mixer”; Cereals; WOSR; Cereals; “Mixer.” The SBN initial population (Pi eggs g−1 soil) = 2.
Figure 4:
Crop sequence in rotation 3: standard sugar beets variety “Mixer”; Cereals; WOSRWWOSR; Cereals; Oil radish; “Mixer.” The SBN initial population (Pi eggs g−1 soil)) = 2.
Figure 5:
Crop sequence in rotation 4: tolerant sugar beets variety “Julietta”; Cereals; Cereals; “Julietta.” The SBN initial population (Pi eggs g−1 soil) = 2.
Figure 6:
Crop sequence in rotation 5: tolerant sugar beets variety “Julietta”; Cereals; WOSR; Cereals; “Julietta.” The SBN initial population (Pi eggs g−1 soil) = 2.
Figure 7:
Crop sequence in rotation 6: tolerant sugar beets variety “Julietta”; Cereals; WOSR; Cereals; Oil radish; “Julietta.” The SBN initial population (Pi eggs g−1 soil) = 2.
Figure 8:
SBN population dynamic under the semi-tolerant variety “Rosalinda” followed by non-host crops at The SBN initial population Pi (eggs g−1 soil) = 4, Tolerance (T) = 0.273, proportion of the population survived (s) = 0.35 and reproduction factor (Rf) = 3.8. The suggested number of waiting years by SBN-Watch to the next “Rosalinda” crop is four years (Pf < T).
Figure 9:
(A) relationship between initial SBN population (Pi eggs g−1 soil) and reproduction factors (Rf) of three sugar beets varieties estimated by SBN-Watch; (B) relationship between initial SBN population Pi (eggs g−1 soil) and reproduction factors (Rf) of four sugar beets varieties sown in microplots in 2013–2014 (n = 4). The bars represent means of Rf ± Sd.