Association of the western flower thrips (Frankliniella occidentalis) with cultivated sunflower (Helianthus annuus) in Israel

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Association of the western flower thrips (Frankliniella occidentalis) with cultivated sunflower (Helianthus annuus) in Israel

Year: 

1995

Source of publication :

Phytoparasitica

Authors :

בן-דב, יאיר

;

צ'יזיק, ראיסה

.

Volume :

Co-Authors: 

Chyzik, R., Dept. of Entomology, ARO, Volcani Center, Bet Dagan, 50250, Israel
Ben-Dov, Y., Dept. of Entomology, ARO, Volcani Center, Bet Dagan, 50250, Israel
Nakache, Y., Eden Regional Experiment Station, M.P. Bet She’an Valley, Bet She’an, 10900, Israel
Klein, M., Dept. of Entomology, ARO, Volcani Center, Bet Dagan, 50250, Israel

From page: 

147

To page: 

155

(

Total pages: 

9

)

Link :

Association of the western flower thrips (Frankliniella occidentalis) with cultivated sunflower (Helianthus annuus) in Israel

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. © 1995, Springer Science + Business Media B.V.. All rights reserved.