Journal of Plant Diseases and Protection

, Volume 121, Issue 3, pp 117–124 | Cite as

The efficacy of intercropping with birdsfoot trefoil and summer savoury in reducing damage inflicted by onion thrips (Thrips tabaci, Thysanoptera, Thripidae) on four leek cultivars

  • Petra Gombač
  • Stanislav Trdan


Onion thrips, Thrips tabaci (Thysanoptera, Thripidae), are an important pest of leek (Allium porrum) in Slovenia, and their control is becoming increasingly difficult for several reasons (e.g., increased resistance, specific life cycle). Therefore, intercropping, whereby the seeds of a different plant species are sown amidst the primary crop, represents a promising method to prevent pest damage. Our field experiments were conducted in 2009 and 2011, during which we studied the suitability of two different intercrops for reducing the extent of the damage inflicted by onion thrips on the leaves of four different leek cultivars. For the first time, birdsfoot trefoil (Lotus corniculatus, Fabaceae) and summer savoury (Satureja hortensis, Lamiaceae) were chosen as intercrops. Both intercrops significantly reduced the extent of damage in both years when compared to the control plots, in which an intercrop was not sown. We found no noteworthy differences among the cultivars regarding the extent of damage. We also studied the effect of these intercrops on the leek yield. Consistent with previous studies, when grown with these intercrops, the leek yield was lower than that of the control plots; however, we conclude that this reduction is acceptable in light of the advantages of intercropping, especially when utilizing birdsfoot trefoil.

Key words

Allium porrum damage Lotus corniculatus Satureja hortensis crop yield 


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  1. Baumann DT, Kropff MJ & Bastiaans L, 2000. Intercropping leeks to suppress weeds. Weed Res 40, 359–374.CrossRefGoogle Scholar
  2. Baumann DT, Bastiaans L & Kropff MJ, 2001. Competition and crop performance in a leek-celery intercropping system. Crop Sci, 41, 764–774.CrossRefGoogle Scholar
  3. Baumann DT, Bastiaans L, Goudriaan J, van Laar HH & Kropf MJ, 2002. Analysing crop yield and plant quality in an intercropping system using an eco-physiological model for interplant competition. Agric Syst 73, 173–203.CrossRefGoogle Scholar
  4. Bath B, 2001. Nitrogen mineralization and uptake in leek after incorporation of red clover strips at different times during the growing period. Biol Agric Hort 18, 243–258.CrossRefGoogle Scholar
  5. Bergant K, Trdan S, Žnidarčič D, Črepinšek Z & Kajfež-Bogataj L, 2005. Impact of climate change on developmental dynamics of Thrips tabaci (Thysanoptera: Thripidae): Can it be quantified? Environ Entomol 34, 755–766.CrossRefGoogle Scholar
  6. Bergant K, Kajfež-Bogataj L & Trdan S, 2006. Uncertainties in modelling of climate change impact in future: An example of onion thrips (Thrips tabaci Lindeman) in Slovenia. Ecol Model 194, 244–255.CrossRefGoogle Scholar
  7. Bosco L & Tavella L, 2010. Population dynamics and integrated pest management of Thrips tabaci on leek under field conditions in northwest Italy. Entomol Exp Appl 135, 276–287.CrossRefGoogle Scholar
  8. Den Belder E, Elderson J & Vereijken PFG, 2000. Effects of undersown clover on host-plant selection by Thrips tabaci adults in leek. Entomol Exp Appl 94, 173–182.CrossRefGoogle Scholar
  9. Diaz-Montano J, Fuchs M, Nault AB, Fail J & Shelton MA, 2011. Onion thrips (Thysanoptera: Thripidae): a global pest of increasing concern in onion. J Econ Entomol 104, 1–13.CrossRefPubMedGoogle Scholar
  10. FITO-INFO., 5.4.2013.
  11. Foster SP, Gorman K & Denholm I, 2010. English field samples of Thrips tabaci show strong and ubiquitous resistance to deltamethrin. Pest Manag Sci 66, 861–864.PubMedGoogle Scholar
  12. Koschier EH & Sedy KA, 2003. Labiate essential oils affecting host selection and acceptance of Thrips tabaci lindeman. Crop Prot 22, 929–934.CrossRefGoogle Scholar
  13. Martin NA, Workman PJ & Butler RC, 2003. Insecticide resistance in onion thrips (Thrips tabaci) (Thysanoptera: Thripidae). NZ J Crop Hortic Sci 31, 99–106.CrossRefGoogle Scholar
  14. Müller-Schärer H, 1996. Interplanting ryegrass in winter leek: Effect on weed control, crop yield and allocation of N-fertiliser. Crop Prot 15, 641–648.CrossRefGoogle Scholar
  15. Richter E, Hommes M & Krauthausen J-H, 1999. Investigations on the supervised control of Thrips tabaci in leek and onion crops. IOBC/WPRS Bull. 22, 61–72.Google Scholar
  16. Schade M & Sengonca C, 1998. On the development, feeding activity and prey preference of Hippodamia convergens Guer.-Men. (Col., Coccinellidae) preying on Thrips tabaci Lind. (Thys., Thripidae) and two species of Aphidae. Anz Schadlingskd Pfl 71, 77–80.Google Scholar
  17. Seguin P, Russelle M, Scheaffer C, Ehlke N & Graham P, 2000. Dinitrogen fixation in Kura clover and birdsfoot trefoil. Agron J 92, 1216–1220.CrossRefGoogle Scholar
  18. Theunissen J, 1997. Application of intercropping in organic agriculture. Biol Agric Hortic 15, 251–259.CrossRefGoogle Scholar
  19. Theunissen J & Legutovska H, 1991. Thrips tabaci Lindeman (Thysanoptera, Thripidae) in leek — symptoms, distribution and population estimates. J Appl Entomol 112, 163–170.CrossRefGoogle Scholar
  20. Theunissen J & Schelling G, 1996. Pest and disease management by intercropping: Suppression of thrips and rust in leek. Int J Pest Manag 42, 227–234.CrossRefGoogle Scholar
  21. Theunissen J & Schelling G, 1997. Damage threshold for Thrips tabaci (Thysanoptera: Thripidae) in monocropped and intercropped leek. Eur J Entomol 94, 253–261.Google Scholar
  22. Theunissen J & Schelling G, 1998. Infestation of leek by Thrips tabaci as related to spatial and temporal patterns of undersowing. Biocontrol 43, 107–119.CrossRefGoogle Scholar
  23. Trdan S, Žnidarčič D, Valič N, Rozman L & Vidrih M, 2006. Intercropping against onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae) in onion production: on the suitability of orchard grass, lacy phacelia, and buckwheat as alternatives for white clover. J Plant Dis Protect 113, 24–30.Google Scholar
  24. Zagrobelny M, Bak S, Rasmussen AV, Jørgensen B, Naumann MC & Lindberg Møller B, 2004. Cyanogenic glucosides and plant-insect interactions. Phytochem 65, 293–306.CrossRefGoogle Scholar

Copyright information

© Deutsche Phythomedizinische Gesellschaft 2014

Authors and Affiliations

  1. 1.Mladinska ulica 8LjubljanaSlovenia
  2. 2.Department of Agronomy, Chair of Phytomedicine, Agricultural Engineering, Arable Production, Grassland and Pasture Management, Jamnikarjeva 101University of Ljubljana, Biotechnical FacultyLjubljanaSlovenia

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