title: Herbicides as weed control agents: state of the art: II. Recent achievements.
abstract: In response to changing market dynamics, the discovery of new herbicides has declined significantly over the past few decades and has only seen a modest upsurge in recent years. Nevertheless, the few introductions have proven to be interesting and have brought useful innovation to the market. In addition, herbicide-tolerant or herbicide-resistant crop technologies have allowed the use of existing nonselective herbicides to be extended into crops. An increasing and now major challenge is being posed by the inexorable increase in biotypes of weeds that are resistant to herbicides. This problem is now at a level that threatens future agricultural productivity and needs to be better understood. If herbicides are to remain sustainable, then it is a must that we adopt diversity in crop rotation and herbicide use as well as increase the use of nonchemical measures to control weeds. Nevertheless, despite the difficulties posed by resistant weeds and increased regulatory hurdles, new screening tools promise to provide an upsurge of potential herbicide leads. Our industry urgently needs to supply agriculture with new, effective resistance-breaking herbicides along with strategies to sustain their utility.
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany kraehmer-hofheim@t-online.de.
authors.forename: Hansjoerg
authors.initials: H
authors.lastname: Kraehmer
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: van Almsick
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Roland
authors.initials: R
authors.lastname: Beffa
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Hansjoerg
authors.initials: H
authors.lastname: Dietrich
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Eckes
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Erwin
authors.initials: E
authors.lastname: Hacker
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Ruediger
authors.initials: R
authors.lastname: Hain
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Harry John
authors.initials: HJ
authors.lastname: Strek
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Hermann
authors.initials: H
authors.lastname: Stuebler
authors.affiliation: Bayer CropScience AG, D-65926 Frankfurt am Main, Germany.
authors.forename: Lothar
authors.initials: L
authors.lastname: Willms
mesh_terms: D000124:Achievement; D000383:Agriculture; D005075:Biological Evolution; D020650:Combinatorial Chemistry Techniques; D018556:Crops, Agricultural; D053209:Herbicide Resistance / Q000235:genetics*; D006540:Herbicides / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D009154:Mutation; D057685:Plant Weeds / Q000187:drug effects / Q000235:genetics*; D058728:Weed Control
chemical_list: D006540:Herbicides
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