No.54 (2003)

Contents

ISHII, H.: Recent Status of Fungicide Resistance and Control Strategies 1

HAYASAKA, T.: Characteristics of Rice Blast Disease Occurrence in Shonai, Yamagata Prefecture, from 1971 to 2001 7

ISHIKAWA, S., ASHIZAWA, T. and IWANO, M: Cytological Reaction of Epidermal Cells to Pyricularia grisea on Rice Cultivar 'Manamusume' 12

YAMADA, M. and NEMOTO, F.: Spread of Rice Blast Fungus from Seedling Mat Left in Paddy Field: Tracing with DNA Fingerprinting 15

MURAMATSU, K., FUJI, S., FURUYA, H. and NAITO, H: Population Structure of Rice Blast Fungus Prevalent in Akita Prefecture in 2000 and 2002 18

NUMATA, Y., TAKEDA, S. and TSUKIJI, K.: Regional Classification and Risks for Main Diseases and Insect Occurrence in Rice Crop in Iwate Prefecture 23

TSUDA, M., OHTA, H. and KATO, S.: Optimal Application Timing of Simeconazole for Rice False Smut Control 29

TSUDA, M. and KATO, S.: Effects of Soil Adsorption on Uptake of Simeconazole by Rice Plants and Sheath Blight Control Effect 32

SOUMA, J. and SUMINO, A.: Incidence of Fusarium Head Blight in Spring Wheat in Hokkaido from 2000 to 2002 35

SOUMA, J. and SUMINO, A.: Deoxynivalenol Production by Pathogens Associated with Fusarium Head Blight in Spring Wheat in Hokkaido from 2001 to 2002 38

OHTO, Y: Effects of Air Temperature Conditions on Symptom Development and Masking of Wheat Yellow Mosaic Disease (WYM) 41

MONMA, Y., SASAHARA, M., ISHII, H. and KOIZUMI, S.: Occurrence of Thiophanate-methyl Resistant Isolates of Soybean Purple Stain Fungus in Miyagi Prefecture 47

KANEMATSU, S., TOMABECHI, K., ISHIGURO, K. and SAKAKIBARA, M.: Distribution of Soybean dwarf virus Strains in Northern Tohoku Region in 2002 51

KANNO, H. and AOKI, T.: Purple Spot of Malabar Nightshade (Basella rubra L.) Caused by Fusarium proliferatum 54

SATOU, M., HORIUCHI, S. and YAMAUCHI, N.: Races of Spinach Downy Mildew Fungus Found in Japan in 2000-2002 58

SATO, T., YASHIRO M., MATSUO, K., MURAKAMI, H., TSUSHIMA, S., FURUYA, S. and SHISHIDO, Y.: Control of Clubroot of Cabbage by Topical Application of Flusulfamide 60

SEKINE, T., TUJI, H. and KOBAYASHI, M.: Effect of Seed Amount of Kozena Daikon for Control of Clubroot of Chinese Cabbage in Miyagi Prefecture 62

KOMATSU, T., YAGI, R. and HORITA, H.: Influence of Density of Fusarium oxysporum f. sp. melonis Race 1, 2 y in Soil on Disease Incidence of Melon Rootstock Cultivars 64

HORIKOSHI, N., FUJITA, Y. and TAIRAKO, K.: Occurrence of Root Rot in Grafted Cucumber Caused by Phomopsis sp. in Open-Field Cultivation 67

YAMAKAGE, H., SHIBATA, S. and SAYAMA, A.: Examination of the Rapid Increase Term Prediction Standard of the Welsh Onion Rust Disease using Seedlings Exposed to Natural Inoculum 70

SUGIYAMA, S and NOZAKI, Y.: Influence of Inoculum Concentration on Development of Verticillium Wilt in Chrysanthemum 72

YAMAMOTO, H.: A Potyvirus Detected in Lily Showing Mosaic Symptoms 74

KANNO, H.: Purple Blotch of Giant Onion (Allium giganteum Regel) Caused by Alternaria porri 76

HOSHI, N. and NAKATANI, F.: Evaluation of Resistance to Alternaria Blotch in Apple Cultivars by Spray Inoculation in Mature Leaves in Autumn 79

YUKITA, K.: Preventive Effects of Fluazinam on White and Violet Root Rots of Apple Trees by Dipping Method 81

SASAKI, M. and KANNO, E.: Symptoms on Blossom Cluster Leaves and Young Fruits of Cherry Caused by Infection of Monilinia fructicola (Winter) Honey 85

SATOH, K, GOTOH, S. and KATOH, T.: Effects of Strobilurins for Control of Pear Ring Rot Caused by Botoryosphaeria berengeriana 88

KIDOKORO, T. and OHBA, A.: Sucking Injury of Rice Seedlings by the Lygaeid Bug, Nysius plebeius 93

OOWASHI, T., KANAGAWA, M., HAYASHI, K., and HINATA, M.: Characteristics of Pecky Rice Damage of the Year When Many Pecky Rice in Miyagi Prefecture Are Generated 96

NIIYAMA, T. and IITOMI, A.: Optimal Control Timing of the Rice Leaf Bug, Trigonotylus caelestialium (Heteroptera : Miridae) 99

DOMON, K., WATANABE, K. and YOSHIMURA, T.: Forecast of Occurence Time of the Rice Leaf Bug, Trigonotylus caelestialium (Heteroptera : Miridae), in the Overwintering Generation 102

NAGAMINE, J.: Seasonal Occurrence of the Rice Leaf Bug, Trigonotylus caelestialium (Kirkaldy), in Grassland and Migration to Paddy Field 105

WATANABE, K., YAMAMURA, K., DOMON, K. and ABE, O.: Forecast of Picky Rice Damage Probability by Sweeping the Rice Leaf Bug, Trigonotylus caelestialium (Kirkaldy) (Heteroptera : Miridae) 110

KIKUCHI, A. and KOBAYASHI, T.: Preference to Spring Gramineous Weeds and Italian Rye Grass as Food of Trigonotylus caelestialium (Kirkaldy)(Heteroptera: Miridae) 113

ICHITA, T.: Change of Occurrence Pattern of Asiatic Rice Borer, Chilo suppressalis (Lepidoptera: Pyralidae) in Tsugaru District in Aomori Prefecture 115

TAKAHASHI, C., KIDOKORO, T. and HOSHI, N.: Damage Analysis in Directly Sown Rice Injured by Rice-Plant Skipper, Parnara guttata (Lepidoptera : Hesperiidae) 119

OYAMA, J. and KIDOKORO, T.: Effects of Insecticide Application in Rice Cultivation on Densities of Spiders, Larvae of Sympetrum and Chironomidae Species in Paddy Field 123

OYAMA, J. and KIDOKORO, T.: Effect of Predation by Spiders on Density of the Green Rice Leafhopper, Nephotettix cincticeps, in Cool Area of Japan 126

ONO, T., KIDOKORO, T., OYAMA, J. and OHBA, A.: Effect of Early Pesticide Application on Density of the Foxglobe Aphid in Mature Soybean Plants 130

UENO, K.: Bionomics and Control of the Foxglove Aphid, Aulacorthum solani (Kaltenbach), in Soybean ∨. Effects of Soil Application of Granular Insecticides on the Foxglove Aphid 133

IWASAKI, A.: Relationship Between Growth Stage of Adzuki Bean Pods and Type of Seed Injury Caused by the European Tarnished Plant Bug, Lygus ruglipennis (Heteroptera, Miridae) 137

Cheng Yi CAI, KONNO, Y. and MATSUDA, K.: Studies on Ovipositional Preferences of Helicoverpa assulta and Helicoverpa armigera 140

KAKIZAKI, M.: Attractions of Some Noctuids to the Sex Pheromone Components of the Cabbage Armyworm, Mamestra brassicae, (Lepidoptera : Noctuidae) 142

TORIKURA, H.: Biological Notes on Cheilosia spp. Injurious to Japanese Butterbur, Petasites japonicus 145

NAGAMINE, J., ISHIYAMA, K. and ABE, K.: Control of the Udo Longicorn Beetle, Acalolepta luxuriosa (Bates), in Japanese Angelica Trees with Entomogenous Fungus, Beauveria brongniartii 149

NAGAMINE, J., ISHIYAMA, K. and ABE, K.: Adult Emergence of the Udo Longicorn Beetle, Acalolepta luxuriosa (Bates), in Japanese Angelica Trees in Mogami, Yamagata 152

OHTOMO, R., KIKUCHI, M. and SATO, Y.: The Occurrence of Click Beetles, Melanotus fortnumi and M. senilis on Common Hop 154

SAKAKIBARA, M. and TAKASHINO, K.: Preliminary Study of Insects Associated with Kochia scoparia in Northern Japan 157

TAKAHASHI, I.: Effects of Several Insecticides on Some Scolytid Ambrosia Beetles Attacking Japanese Pear 160

MIZUKOSHI, T.: Species Caught by Synthetic Sex Pheromone Trap of the Oriental Fruit Moth, Graphorita molesta (Busck) (Lepidoptera ; Tortricidae), and Their Seasonal Attractant Prevalence in Hokkaido 165

ISHIGURI, Y: Control of European Red Mite, Panonychus ulmi, by Petroleum Oil Emulsifiable Concentrate Application 10 Days after the Green-Tip Stage in Apples 170

MOCHIZUKI, M, FUNAYAMA, K., HONGO, K. and MOCHIZUKI, A.: Indirect Effects of Exotic Predatory Mite, Typhlodromus occidentalis (Acari : Phytoseiidae), on Native Predatory Mites in Apple Orchards in Akita Prefecture 174

MURAI, T. and OGASAWARA, H.: Damage Caused by Fruit-Piercing Stink Bugs in European Pear in Aomori 177

SATO, T., GOTO, S. and KITAZAWA, Y.: Damage to Persimmons by Larvae of Stink Bugs, Lygocoris spp. 182

ARAKAWA, A. and OKAZAKI, K.: Occurrence of Damaged Fruits Caused by Cupreous Chafer, Anomala cuprea HOPE and Control Methods in Peach Orchards 185

GOTO, J. and FUJISAWA, T.: Damage of Gentian Seedling by Fungus Gnat Larvae (Sciaridae, Diptera) and Provision against Them 189

NARABU, T.: Effects of Planting of Trifolium spp. and Application of Dried Cattle Feces on Population Density of Soybean Cyst Nematode, Heterodera glycines 193

KUSHIDA, A., UEHARA, T. and MOMOTA, Y.: Effects of Transplanting Potato Seedlings Grown in Paper Pots to Fields Infested with Potato Cyst Nematode, Globodera rostochiensis, on Potato Yield 197