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Broomrape (Orobanche cumana) Control in Sunflower (Helianthus annuus) with Imazapic

Published online by Cambridge University Press:  20 January 2017

Radi Aly ,
Yaakov Goldwasser ,
Hanan Eizenberg ,
Joseph Hershenhorn ,
Shmuel Golan  and
Yeshaiahu Kleifeld
Radi Aly*
Affiliation:
Department of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Yaakov Goldwasser
Affiliation:
Department of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Hanan Eizenberg
Affiliation:
Department of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Joseph Hershenhorn
Affiliation:
Department of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Shmuel Golan
Affiliation:
Department of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Yeshaiahu Kleifeld
Affiliation:
Department of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
*
Corresponding author's E-mail: radiali@netvision.net.il.
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Abstract

Field trials were conducted in 1997 and 1998 at two locations in Israel to evaluate the efficacy of imazapic applied postemergence (POST) to sunflower for broomrape control under irrigated and nonirrigated conditions. Two sequential treatments of imazapic at 1.5 followed by (FB) 3.0, 3.0 FB 4.5, or 4.5 FB 6.0 g ai/ha on sunflower plants 12 ± 3 and 55 ± 5 cm tall, respectively, reduced sunflower broomrape throughout the growing season under irrigated and nonirrigated conditions. Sunflower growth was not affected by imazapic treatments. It was confirmed, in accordance with an earlier report, that when sequential treatments of imazapic included an application at the sunflower inflorescence developmental stage, the herbicide decreased seed yield in proportion to the applied rate.

Keywords

Imazapicbroomrape, Orobanche cumana Wallersunflower, Helianthus annuus L.Parasitic weed, herbicidefb, followed byPOST, postemergencePRE, preemergence
Type
Research
Information
Weed Technology , Volume 15 , Issue 2 , June 2001 , pp. 306 - 309
Copyright
Copyright © Weed Science Society of America 

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