Phytoparasitica (1995) 23, 147-155

Raisa Chyzik, Y. Ben-Dov, Y. Nakache and M. Klein (1995)
Association of the western Flower thrips (Frankliniella occidentalis) with cultivated sunflower (Helianthus annuus) in Israel
Phytoparasitica 23 (2), 147-155
Abstract: In 1992 and 1993, sunflower (Helianthus annuus L.) crops in Israel were heavily damaged by the western flower thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). Adult females appear in the heads of sunflower just as the latter begin to blossom; the population decreases towards completion of anthesis. The damage to kernels is greatest at the periphery of the heads, where flowers appear first, and lowest at the center. Fields sown early in the season (in March) are usually the ones infested most by WFT and suffering the greatest damage. Fields sown one month later are less infested, since predatory bugs of the genus Orius are very active at that time.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Yair Ben-Dov

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Frankliniella occidentalis	Sunflower (Helianthus annuus)	Israel