Open Access

Development of a decision support system for managing Heterodera schahtii in sugar beet production

Zahra S. Omer
Zahra S. Omer
, 
Jens Levenfors
Jens Levenfors
, 
Susanne Andersson
Susanne Andersson
 and 
Ann-Charlotte Wallenhammar
Ann-Charlotte Wallenhammar
   | Apr 15, 2019
Journal of Nematology's Cover Image
About this article
Previous Article
Next Article
Cite
Article Category: Arts & Humanities
Published Online: Apr 15, 2019
Page range: 1 - 11
Received: Oct 19, 2018
DOI: https://doi.org/10.21307/jofnem-2019-005
© 2019 Zahra S. Omer et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

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.
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.
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.
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.
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.
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.
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.
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).
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.
(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.

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

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

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
eISSN:
2640-396X
Language:
English
Publication timeframe:
Volume Open
Journal Subjects:
Life Sciences, other
Journal RSS Feed