Skip to main content
SLU publication database (SLUpub)

Research article2007Peer reviewed

Test of semiochemicals and a resistant wheat variety for Russian wheat aphid management in South Africa

Prinsloo G, Ninkovic V, van der Linde TC, van der Westhuizen AJ, Pettersson J, Glinwood R

Abstract

Aphid behaviour-modifying semiochemicals were tested against Russian wheat aphid Diuraphis noxia in South African wheat. Volatile substances from plant essential oils, methyl salicylate, 1,8-cineole and menthol were tested in the laboratory and field in combination with the D. noxia-susceptible wheat variety Betta and the resistant variety Elands. All three substances were repellent to D. noxia in olfactometric tests. Diuraphis noxia settled less on Elands plants that had been exposed to the volatiles, whereas the effect of the volatiles on D. noxia settling on Betta was less obvious. A slow-release pellet formulation was used to apply semiochemicals in wheat in replicated plot field trials in 2004 and 2005. In 2004, semiochemicals reduced aphid populations in Elands, but led to increased aphid populations in Betta. Further, the impact of the chemicals on aphid numbers and grain quality (thousand grain weight) varied according to plant variety, indicating an interaction between semiochemicals and plant resistance/variety

Published in

Journal of Applied Entomology
2007, Volume: 131, number: 9-10, pages: 637-644
Publisher: BLACKWELL PUBLISHING

      SLU Authors

    • Ninkovic, Velemir

      • Department of Entomology, Swedish University of Agricultural Sciences

      • Glinwood, Robert

        • Department of Entomology, Swedish University of Agricultural Sciences

      UKÄ Subject classification

      Agricultural Science

      Publication identifier

      DOI: https://doi.org/10.1111/j.1439-0418.2007.01213.x

      Permanent link to this page (URI)

      https://res.slu.se/id/publ/15553