Atlas of Weed Mapping

Hansjoerg Kraehmer, now retired, was President of the European Weed Research Society between 2010 and 2012. He was also Head of Herbicide Profiling and Support, at Bayer Crop Science in Frankfurt, Germany.

• Contributors, viiAcknowledgements, ixIntroduction 1Part I: Continental views of weed infestation mapsHansjörg Krähmer1 Europe 7Hansjörg Krähmer2 Asia 23Hansjörg Krähmer3 North America 47Hansjörg Krähmer4 South America 56Hansjörg Krähmer5 Africa 71Hansjörg Krähmer6 Australia 81Hansjörg KrähmerPart II: Special crop view and mapping of cotton weeds7 Cotton cultivation 87Garifalia Economou, Ahmet Uludag and Hansjörg Krähmer8 Global cotton weed distribution 90Garifalia Economou, Ahmet Uludag and Hansjörg Krähmer9 Farming practices and weed infestation 101Garifalia Economou, Ahmet Uludag and Hansjörg Krähmer10 Summary of global cotton weed distribution 102Garifalia Economou, Ahmet Uludag and Hansjörg KrähmerPart III: Invasive weed species11 Overview of selected problems 105Hansjörg KrähmerPart IV: Global zones with similar weed infestation12 Introduction to global zones with similar weed infestation 115Hansjörg Krähmer13 Cereal weed belts 117Hansjörg Krähmer14 Maize weed belts and areas of similar weed infestation 120Hansjörg Krähmer15 Soybean weed zones and areas 123Hansjörg Krähmer16 Rice weed belts 124Hansjörg KrähmerPart V: General observations on all infested sites17 Ranks and number of weed species in a defined crop 129Hansjörg Krähmer18 Specialization of weeds and biodiversity 130Hansjörg KrähmerPart VI: Answers to key questions: What makes which weed grow where and when?19 Weeds as crop companions 135Hansjörg Krähmer20 Can we associate weeds with specific environmental conditions? 139Hansjörg Krähmer21 What makes weeds grow in monocultures, what makes them compete with the crop and with other weeds? 161Hansjörg KrähmerPart VII: Aesthetics, rare weeds and production objectives in agriculture22 Rare weeds in arable crops and aesthetics: harmony or hunger? 169Hansjörg KrähmerPart VIII: Weeds in meadows, pastures and rangeland23 Overview of grassland 177Hansjörg KrähmerPart IX: Aquatic and wetland weeds24 Introduction 185Hansjörg Krähmer25 Morphological adaptation to water 192Hansjörg Krähmer26 Aerenchyma within the stem 194Hansjörg Krähmer27 Stem and vascular bundle modifications 215Hansjörg Krähmer28 The root 277Hansjörg Krähmer29 The leaf 311Hansjörg Krähmer30 Vegetative propagation 371Hansjörg Krähmer31 Aesthetics, species attractiveness and rare aquatic species 377Hansjörg Krähmer32 Growing conditions of aquatic plants 382Hansjörg Krähmer33 Dominance and noxious effects of selected aquatic and wetland species 384Hansjörg Krähmer34 Adaptation of terrestrial weeds to water stress: Waterlogging and temporary hypoxia 391Hansjörg Krähmer35 Weeds in rice 396Hansjörg KrähmerPart X: Which ecological rules described in textbooks will help us to understand the unevenness of weed species distribution? 36 Asymmetric competition within arable crops 401Hansjörg Krähmer37 Comparison of closely related species and their ability to grow as weeds in crops 404Hansjörg KrähmerPart XI: Factors contributing to the temporal and spatial distribution of weed resistance: a map-based analysis38 How has Alopecurus myosuroides resistance changed over the years? 409Martin Hess, Johannes Herrmann, Hansjörg Krähmer and Roland Beffa39 Weeds to watch 420Hansjörg KrähmerPart XII: Conflict between the dominance of some weeds and the intention to preserve rare species40 Can we shape nature into what we want it to be? 425Hansjörg KrähmerPart XIII: Weed data collection, analysis and presentation of results41 Introduction to weed mapping methodology 429Michaela Kolářová and Pavel Hamouz42 Data collection 430Michaela Kolářová and Pavel Hamouz43 Approaches to the analysis of weed distribution 440Michaela Kolářová and Pavel Hamouz44 Presentation of weed mapping results 456Michaela Kolářová and Pavel HamouzAppendix 462Index 467