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Bioherbicides: dead in the water? A review of the existing products for integrated weed management

Abstract : The intensive use of synthetic herbicides is questioned for many reasons. Bioherbicides, as integrated weed management tools, however, have the potential to offer a number of benefits such as increased target specificity and rapid degradation. Despite the efforts to identify effective bioherbicide agents in laboratory and field, only thirteen bioherbicides are currently available on the market. Since 1980, the number of biopesticides has increased around the world, while the market share of bioherbicides represents less than 10% of all biopesticides. Nevertheless, weed management implemented at the cropping systems scale needs bioherbicides because of legislation to drive weed management away from heavy reliance on chemicals, the global increase in organic agriculture, the need of both organic and conventional agriculture to increase weed control efficiency, concerns about herbicide resistance, and concern from the public about environmental safety of herbicides. Consequently, we review here the existing products on the market and describe their history, mode of action, efficacy and target weeds. This review is unique because we also discuss the role of bioherbicides in integrated weed management: to manage soil weed seedbanks with seed-targeted agents in addition to primary tillage, to increase the efficacy of mechanical weeding because bioherbicides are more effective on seedlings, to increase the suppression effect of crop cultivars by first slowing weed growth, to terminate cover crops particularly in conservation agriculture, and finally to manage herbicide resistant populations. (C) 2016 Elsevier Ltd. All rights reserved.
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Submitted on : Wednesday, May 27, 2020 - 8:08:20 AM
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Stéphane Cordeau, Marion Triolet, Sandra Wayman, Christian Steinberg, Jean-Philippe Guillemin. Bioherbicides: dead in the water? A review of the existing products for integrated weed management. Crop Protection, Elsevier, 2016, 87, pp.44-49. ⟨10.1016/j.cropro.2016.04.016⟩. ⟨hal-02631431⟩



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