4.7 Article

Are root parasitic broomrapes still a good target for bioherbicide control?

Journal

PEST MANAGEMENT SCIENCE
Volume -, Issue -, Pages -

Publisher

JOHN WILEY & SONS LTD
DOI: 10.1002/ps.7360

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This article provides an overview of the limitations of traditional weed management methods and the failures of biological control in controlling parasitic weeds. However, due to scientific and technological advancements, the bioherbicide approach deserves renewed interest and may offer new chances of success.
Root parasitic weeds of the genera Orobanche and Phelipanche (commonly named broomrapes) are responsible for enormous yield losses of several crops all around the world. Traditional weed management methods, including among others the use of herbicides, soil fumigation and solarization, and mechanical, agronomic or physical methods, may have limits of use or can provide a modicum of control. Difficulties in controlling parasitic weeds are due to both the enormous number of seeds produced by each plant that can remain viable for many years, even in the absence of a host, and to the unique physiological and biological properties of the parasite. Although long considered a suitable and promising approach, biological control, in particular the use of microbial organisms or compounds stimulating or inhibiting seed germination, has had no commercial success and no products have reached the market. This article provides a quick overview of the bioherbicide approaches attempted until now, briefly discussing the causes of the failures and the possibility to improve biocontrol agents' effectiveness. Indeed, despite the failures, the 'bioherbicide' approach deserves renewed interest in light of the enormous scientific and technological progress made in past years, which offers new chances of success. (c) 2023 The Author. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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