IOBC/wprs Bulletin Vol. 28(2) 2005

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The IOBC/WPRS Bulletin is published by the International Organization for Biological and Integrated Control of Noxious Animals and Plants, West Palearctic Regional Section (IOBC/WPRS) Le Bulletin OILB/SROP est publié par l‘Organisation Internationale de Lutte Biologique et Intégrée contre les Animaux et les Plantes Nuisibles, section Regionale Ouest Paléarctique (OILB/SROP) Copyright: IOBC/WPRS 2005 The Publication Commission of the IOBC/WPRS: Horst Bathon Federal Biological Research Center for Agriculture and Forestry (BBA) Institute for Biological Control Heinrichstr. 243 D-64287 Darmstadt (Germany) Tel +49 6151 407-225, Fax +49 6151 407-290 e-mail: h.bathon@bba.de ISBN 92-9067-174-0 Luc Tirry University of Gent Laboratory of Agrozoology Department of Crop Protection Coupure Links 653 B-9000 Gent (Belgium) Tel +32-9-2646152, Fax +32-9-2646239 e-mail: luc.tirry@ugent.be
Preface The Working Group “Integrated Control of Soil Pests“ subgroup “Melolontha“ held its fourth meeting within the frame of IOBC. The topics were opened to include other soil dwelling pests like wireworms and Diabrotica which resulted in a very attractive programme. 53 participants from 12 countries met from 11-13 October 2004 in Innsbruck, Austria. The local arrangements and a half-day excursion to Melolontha sites in the Oetztal were perfectly organised by Barbara Pernfuss and Hermann Strasser and their team which is greatly acknowledged. The meeting was opened with review presentations on Diabrotica, the scarab situation in Europe and non-target effects of entomopathogenic fungi. 22 oral and 17 poster contributions were presented dealing with the following topics: Melolontha spp. – actual situation, control strategies and risk assessment; “new scarabs” – control strategies and ecology; wireworms – control, ecology, sampling and monitoring. The dissemination of Diabrotica in Europe is of great concern. Control concentrates on curative and preventive insecticide applications and on crop rotation, while no biological control method is available. The increasing problems with wireworms attracted many scientists and were vivaciously discussed. The problems with Melolontha spp. are increasing in central and east Europe with some local exceptions. They are mainly due to M. melolontha L. and concern grassland, orchards and reforestation areas, occasionally vineyards and other crops. Successful control strategies are the use of the entomopathogenic fungus Beauveria brongniartii and the placements of nets to protect expensive crops. From the other scarab species Amphimallon spp. and Phylloperta horticola show increasing populations. Metarhizium anisopliae and nematodes are considered good candidates for their control. A highlight of the meeting was the excursion to the Oetztal. This valley suffered from heavy white grub damages which eventually got under control with the application of the fungus Beauveria brongniartii. In presence of involved farmers the representatives of the local extension service explained the situation before and after the treatment and how the treatment was organised. The scientific part was followed by a visit of the Oetzi-village and a delicious dinner in alpine heights accompanied with local music and dance. Future work of the group will concentrate on improving the existing non-chemical control measures and exploring new ones especially with regard to wireworms and Diabrotica. At the administrative meeting Jürg Enkerli, Agroscope FAL Reckenholz, Zürich, was elected as new convenor of the subgroup. Further, it was decided that the name of the subgroup should be changed to “Soil insect pests” and that future meetings are held every two years alternating with the IOBC/wprs Working Group “Insect pathogens and insect parasitic nematodes”. Therefore, the next meeting will be in autumn 2006 at the Research Centre Laimburg, South Tyrolia, Italy. A press conference concluded the meeting. Many sponsors supported the working group meeting and contributed substantially to its success. They are greatly acknowledged. Siegfried Keller Convenor of the subgroup
Page 1: IOBC / WPRS Working group „Insect
Page 6 and 7: iv ERICSSON Jerry University of Bri
Page 8 and 9: vi PÁZMÁNDI Christian Centre for
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Page 12 and 13: x Metarhizium anisopliae for white
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Page 16 and 17: Insect Pathogens and Insect Parasit
Page 18 and 19: stands (Levine et al. 2002) to feed
Page 20 and 21: In conclusion, the chemical control
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Page 27 and 28: 12 The control strategies used agai
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Page 31 and 32: 16 2) Case study: Genetic diversity
Page 33 and 34: 18 Bidochka, M.J., Menzies, F.V. &
Page 36 and 37: Insect Pathogens and Insect Parasit
Page 38 and 39: Results and discussion The first co
Page 40 and 41: Isolation of Beauveria brongniartii
Page 42 and 43: grown in the dark for 3 weeks at 22
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Insect Pathogens and Insect Parasit
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Numbers of captured beetles were an
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Mean captues +/- SE per trap & day
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dilution for plating (see above). F
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45 “New” white grubs
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48 The goal of this study was to de
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50 In spring 2003 the density of M.
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52 (Germany). The first treatment w
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54 Application timing of H. bacteri
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Results and discussion Collection o
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Discussion During this study the en
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64 Materials and methods Source of
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66 100 80 60 40 20 0 100 80 60 40 2
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68 During this study, selectivity a
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71 Wireworms
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74 Solanum tuberosum L. (Solanaceae
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76 % CATEGORIZATION OF MORBIDITY FI
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78 of adults caught can reliably pr
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Results and discussion Before spray
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References Parker, W.E. & Howard, J
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88 insecticide residues. Nonetheles
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90 References Cockbill, G.F., Hende
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92 Results and discussion a. Taxono
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94 published; some information has
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96 C2a: no sensitive crops in the s
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98 Furlan, L., Tóth, M., Ujvary, I
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100 Roberts, A.W.R. 1928: On the li
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102 Results and discussion Crop rot
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104 % damage by wireworms 100 80 60
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106 noticed that grass-clover in cr
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108 % damage by wireworms 60 50 40
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110 Materials and methods Soil Soil
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112 Emigration - deterrence of wire
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114 Table 1. The effect of broadcas
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116
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118 presence and abundance of wirew
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120 Furthermore, A. obscurus larvae
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122 Horton, D.R. & Landolt, P.J. 20
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124 Bait trapping 48 bait traps wer
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126 Acknowledgements We thank Anton
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128 history can be obtained (Scheu
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130 lower left hand corner of fig.
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132 Eggers, T. & Jones, T.H. 2000:
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134 pheromone combinations for each
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136 Fig. 2. Click beetle spp. captu
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138 Fig 4. Click beetle spp. captur
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140 Fig 6. Click beetle spp. captur
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142 Siirde, K., Lääts, K., Erm, A
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Fig. 2. Comparison of several trap
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Fig. 5. Catches of WCR in VARs+ tra
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Table 1. Performance characteristic
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Miscellaneous
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158 Material and methods Field tria
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160 Figure 2: Abundances of Collemb
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162
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164 but also when used against the
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166 based EPN product in this exper
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168
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170 branches. Beetles can walk up t
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172 1999/ 2000, I 1999/ 2000, C 200
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174
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176 Experimental design During the
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178 Acknowledgements We thank Stefa
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180 Spore suspension Conidia of M.
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182 Data about the stability of spo
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184 dence of host presence and appl
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186 Material and methods All habita
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188 Hajek, A.E. & Leger, R. J. St.
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190 Risk Assessment of Fungal Biolo
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192 It is scheduled that our future
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IOBC/wprs Bulletin Vol. 28(2) 2005

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