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

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

Journal of Nematology
Volume 51 (2019): Issue 1 (January 2019)
By: Zahra S. Omer,  Jens Levenfors,  Susanne Andersson and  Ann-Charlotte Wallenhammar  
Open Access
|Apr 2019

Figures & Tables

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_

pHP–AL1 K–AL2 ClayOM3 Sand
mg 100 g jord−1 %
7,1126,41873

Sugar beets varieties tested at different Pi (eggs g−1 soil) levels in microplot experiments

Varietal categoryPi (eggs g−1 soil)
YearStandardSemi-tolerantTolerant
2013Mixer1 Rosalinda2 Alexina3 71317
2014MixerRosalindaElora249

Crop rotations planned by SBN-Watch_

RotationCro> p sequence
1Mixer1 CerealsCerealsMixer
2MixerCerealsWOSRCerealsMixer
3MixerCerealsWOSRCerealsOil radishMixer
4Julietta2 CerealscerealsJulietta
5JuliettaCerealsWOSRCerealsJulietta
6JuliettaCerealsWOSRCerealsOil radishJulietta
DOI: https://doi.org/10.21307/jofnem-2019-005 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Page range: 1 - 11
Submitted on: Oct 19, 2018
|
Published on: Apr 15, 2019
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Decision support system,
Management
Related subjects:
Life sciences,
Life sciences, other

© 2019 Zahra S. Omer, Jens Levenfors, Susanne Andersson, Ann-Charlotte Wallenhammar, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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