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Simulating crop rotation strategies with a spatiotemporal lattice model to improve legislation for the management of the maize pest Diabrotica virgifera virgifera

Author

Listed:
  • Szalai, Márk
  • Kiss, József
  • Kövér, Szilvia
  • Toepfer, Stefan

Abstract

Crop rotation is an effective control method against the root-feeding larvae of the maize pest Diabrotica virgifera virgifera (western corn rootworm; Coleoptera: Chrysomelidae). However, adults are mobile and can re-colonise previously rotated maize fields. A discrete, spatiotemporal, lattice-based and cellular automaton-like, interacting particles system model was developed to allow complex analyses for improving integrated pest management recommendations and legislations; and this through considering at one time legislation for pest control strategies such as crop rotation, characteristics of an agricultural region and the population dynamics of the pest. Sensitivity analyses identified only two of 20 varying input factors with high importance at influencing the model output, i.e. the percentage of maize fields reaching pest populations above an economic threshold. These were: the percentage of rotated maize among all maize fields and the generational growth rate of the pest in low populated fields. Increases in the percentage of rotated maize led to a decreasing logistic curve for the percentage of fields reaching pest populations above threshold. Only a small percentage of maize fields was above threshold when percentage of rotated maize exceeded 70% holding all other input factors at their most likely values. Legislation of mandatory rotation after 3 consecutive years of maize growing reduced the need for rotation of maize for D. v. virgifera management below 60%. In contrast, nearly all maize fields reached thresholds when less than 40% of maize fields were rotated. An increased growth rate resulted in more maize fields reaching populations above threshold. Astonishingly, the maize growing in an agricultural region had, in a range from 20% to 60%, little to no influence. In conclusion, legislations requiring 100% rotation for the control of this maize pest seem too strict. Metamodels are provided to easily estimate percentages of maize fields reaching pest populations above threshold, which can be used by regional or country-wide decision makers in agri-policy as well as for integrated pest management guidelines.

Suggested Citation

  • Szalai, Márk & Kiss, József & Kövér, Szilvia & Toepfer, Stefan, 2014. "Simulating crop rotation strategies with a spatiotemporal lattice model to improve legislation for the management of the maize pest Diabrotica virgifera virgifera," Agricultural Systems, Elsevier, vol. 124(C), pages 39-50.
  • Handle: RePEc:eee:agisys:v:124:y:2014:i:c:p:39-50 DOI: 10.1016/j.agsy.2013.10.009
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    References listed on IDEAS

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    1. Wesseler, Justus & Fall, El Hadji, 2010. "Potential damage costs of Diabrotica virgifera virgifera infestation in Europe – the “no control” Scenario," MPRA Paper 33231, University Library of Munich, Germany.
    2. Carrasco, L.R. & Mumford, J.D. & MacLeod, A. & Knight, J.D. & Baker, R.H.A., 2010. "Comprehensive bioeconomic modelling of multiple harmful non-indigenous species," Ecological Economics, Elsevier, vol. 69(6), pages 1303-1312, April.
    3. repec:eee:ecomod:v:221:y:2010:i:17:p:2068-2075 is not listed on IDEAS
    4. Carrasco, L. Roman & Cook, David & Baker, Richard & MacLeod, Alan & Knight, Jon D. & Mumford, John D., 2012. "Towards the integration of spread and economic impacts of biological invasions in a landscape of learning and imitating agents," Ecological Economics, Elsevier, vol. 76(C), pages 95-103.
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    Cited by:

    1. Feusthuber, E. & Schönhart, M. & Schmid, E., 2015. "Spatial analysis of maize cropping systems to relieve crop pest pressure in Austria," 150th Seminar, October 22-23, 2015, Edinburgh, Scotland 212661, European Association of Agricultural Economists.
    2. repec:eee:agisys:v:157:y:2017:i:c:p:93-106 is not listed on IDEAS

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