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Insect injury and mortality of seedlings of field penny-cress (Thlaspi arvense L.)

Author

Listed:
  • Jindra Štolcová

    (Department of Entomology, Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic)

Abstract

During 1997-1999 the injury caused by insect herbivors and mortality of plants of field penny-cress (Thlaspi arvense L.) was studied on an early fallow field at Prague-Ruzyně. The highest abundance of the weed (102 plants per m2) was recorded in 1999, the lowest (27 plants/m2) in 1998. Nearly all plants (100% in 1997 and 1998, 94% in 1999) were injured by flea beetles (Phyllotreta spp.). Injury was greatest (> 50%) in younger seedlings. Mortality was low in 1997 (17.1%) and 1999 (15.8%), but high in 1998 (94%) because of concurrent drought. Herbivory and drought may kill a large proportion of seedlings and thus change the composition of the weed community.

Suggested Citation

  • Jindra Štolcová, 2005. "Insect injury and mortality of seedlings of field penny-cress (Thlaspi arvense L.)," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 41(1), pages 21-26.
    • Handle: RePEc:caa:jnlpps:v:41:y:2005:i:1:id:2736-pps
    DOI: 10.17221/2736-PPS
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