No.59 (2008)

Contents

Honda, K.: Recent Problems on Bemisia tabaci Biotypes and their Transmission of Plant Viruses 1

Fujii, N., Sato, G., Kato, M. and Fukaya, T.: Reduction in Fungicide Use for Rice Blast Control by Eliminating Infection Sources over a Wide Area 9

Sasahara, M., Monma, Y. and Kondo, M.: Case-Control Study about Infection Sources of False Smut Disease in Miyagi Prefecture 14

Sasahara, M., Mikami, A. and Hataya, M.: Analysis of Factors Affecting Out break of False Smut Disease in Miyagi Prefecture 18

Mizuno, H., Souma, J. and Kondo, N.: Trichothecene Chemotype and Species Composition of Fusarium graminearum Species Complex Isolated from Rice Plant Residue in Hokkaido 22

Kozawa, T., Yasuoka, S. and Shimizu M.: Evaluation of Foliar Application of Several Fungicides for Control of Wheat Scab Caused by Microdochium nivale 26

Iimura, S. and Iwadate Y.: Occurrence of Soybean Purple Stain Disease, Caused by Thiophanate-methyl Resistant Isolates, Cercospora kikuchii, in Iwate Prefecture 30

Komatsu, T.: Extending Application Time for Soil Reduction Disinfestation in Hokkaido. 33

Shimizu, M., Nakayama, T., Maoka, T., Tsuda, S., Fuwa, H., Hataya, T. and Mori, M.: Control Effect of Soil Application of Fungicide on Spraing Caused by Potato mop-top virus 38

Horita, H., Sasaki, J. and Takeuchi, T.: Occurrence of Mosaic in Sweet Pepper Caused by Potato Virus Y in Hokkaido 42

Misawa, T.: Optimum Conditions of Lesion Formation of Brown Oval Symptom and Yellow Mottle Symptom of Leaf Blight of Welsh Onion Caused by Stemphylium vesicarium 46

Misawa, T.: Seasonal Occurrence of Leaf Blight of Welsh Onionin Hokkaido 50

Misawa, T.: Field Survey of Leaf Blight of Welsh Onionin Hokkaido 56

Nishiwaki, Y. and Horita, H.: Occurrence of Powdery Mildew on Sweet Pepper and Its Yield Losses in Hokkaido 60

Nakayama, H.: Control Effect of Gray Mold and Leaf Mold Fungus of Tomato by Local Ventilation 63

Iwaya, K., Yamashita, K. and Iwama, T.: Occurrence of Fusarium Wilt of Tomato Caused by Fusarium oxysporum f. sp. lycopersici Race 3 in Aomori Prefecture 68

Saito, K., Domon, K., Honma, T., Kawasaki, T., Ogata, M. and Hori, Y.: Soil Reduction Disinfestation of Stock Wilt Caused by Fusarium oxysporum f. sp. conglutinans race3 71

Chiba, K., Onoda, K., Abe, J., Iwadate, Y. and Takesawa, T.: Graft Transmission of Gentian Tumorous Symptoms‘Kobu-sho’ 74

Nakatani, F. and Harada, Y.: Occurrence of Gentian and Moor Grass Rust Caused by Puccinia moliniae, with Emphasis on Characteristic Outbreaks of the Rust in the Moor Where Gentian is not Growing 77

Sugawara, K., Matsudate, A. andIto, Y.: Occurrences of Gray Mold on Melampodium and Smoke Tree Caused by Botrytis cinerea 82

Sugiyama, S., Sato, T., Moriwaki J., Kageyama, K. and Chu, E.: First Report on Anthracnose of Sanguisorba officinalis Caused by Colletotrichum acutatum 86

Sato, T., Sugawara, K. and Kudo, N.: Occurrence of Fusarium Wilt of Safflower (Carthamustinctorius) Caused by Fusarium oxysporum 90

Yukita, K., Akahira, T., Yamamoto, S. and Fukushi, Y.: Survey of Apple Scabin Aomori Prefecture in 2007 and Efficacy of DMIs under Severe Infection Condition 94

Asari, M.: ASimple Model for Forecasting the Primary Discharge of Ascospores and Symptom Development of Apple Scab, Venturia inaequalis 99

Nekoduka, S. and Iwadate, Y.: Screening of Fungicide for Reducing Infection Density ofSooty Blotch (Gloeodes pomigena) on Apple Fruits and its Effective Application Period 103

Ogasawara, H.: Reddish-Brown Spot Symptom on Leaves and Fruits of Apricot and Japanese Apricot Caused by Monilinia fructicola 109

Yoshimura, T., Ochi, A. and Sato, T.: Effects of the Number of Split-Hull Paddies and Ripening Stage of the Rice Plant on Nymphal Survival and Growth of the Rice Leaf Bug, Trigonotylus caelestialium (Heteroptera: Miridae) 113

Yokota, H. and Suzuki, T.: Most Effective Timing of Mowing on the Population Density of the Nymphs of the Overwintering Generation of Stenotus rubrovittatus in the Footpath between Paddy Fields 116

Hashimoto, Y. and Saito, M.: Residual Effects of Granular Insecticides on the Control of the Rice Leaf Bug, Trigonotylus caelestialium (Heteroptera: Miridae) in Release Experiments 120

Hashimoto, Y. and Saito, M.: Effects of Granular Insecticides on the Control of the Rice Leaf Bug, Trigonotylus caelestialium (Heteroptera: Miridae) in Paddy Field 123

Sakurai, T. and Sakakibara, M.: Effect of Exposure of Eggs Deposited on Wheat Seedlings to Low Temperature on Hatching in Stenotus rubrovittatus 126

Nakamura, T., Katou, M., Niiyama, T. and Takahashi, Y.: Occurrence of the Bean Webworm, Pleuroptya ruralis, in Soybean Fields of Akita Prefecture 129

Mitamura, T. and Matsuki, N.: The Overwintering Habit of the Bean Webworm, Pleuroptya ruralis (Lepidoptera,: Crambidae) in Fukushima Pref. Japan 133

Onodera, K. and Yamazaki, H.: Control of Soybean Dwarf Disease, Soybean Dwarf Virus (SbDV), by Resistant Line Treated with Insecticides 137

Miyake, N., Tanaka, Y., Hori, K., Takezawa, Y. and Iwasaki, A.: Growth Obstructive Effect of Common Cutworm-Resistant Soybean Against Cabbage Armyworm, Mamestra brassicae 142

Takashino, K., Sakakibara, M., Honda, K., Noda, T. and Okada, M.: Pheromone Trap Catch Date of the Diamondback Moth in Spring becomes earlier in Morioka City, North Japan 145

Misawa, T., Sato, K., Maisawa, S. and Niiyama, T.: Examination of application program to Diamondback Moth (Plutella xylostella (L.)) of Cabbage by Flubendiamide 149

Masuda, T. and Miyata, M.: Effects of Cover Cropping on Occurrence of Insect Pests in Cabbage Fields 153

Miyata, M. and Yamanaka, S.: Dispersion of the Predacious Mite Amblyseius swirskii on Eggplant 158

Miyata, M., Masuda, T., Yamanaka, S. and Momoshita, M.: Control of Thrips and Aphids by Combining and Using Physical Materials 161

Hashimoto, N.: Control of Flower Thrips, Frankliniella intonsa, on Sweet Pepper Grown in a Greenhouse using Orius strigicollis with Ultraviolet Absorbing Film 165

Suzuki, T., Hori, M., Matsuda, K. and Masuda, T.: Feeding and Oviposition Behaviors of the Pea Leafminer Liriomyza huidobrensis (Diptera: Agromyzidae) to Various Crops 170

Shindo, J., Ishitani, M. and Kitano, N.: Effect of Insecticides against the Garden Pea Leafminer Chromatomyia horticola (Goureau) (Diptera: Agromyzidae) 174

Aoki, M.: Control Effect of Chemical Application on Larvae of Fourteen Spotted Asparagus Beetle, Crioceris quatuordecimpunctata (Coleoptera: Chrysomelidae) after Harvest Time of Asparagus Grown Outdoors in Hokkaido 179

Aoki, M.: Control Effect of Insecticides on Larvae of Fourteen Spotted Asparagus Beetle, Crioceris quatuordecimpunctata (Coleoptera: Chrysomelidae) 182

Itoyama, K., Miyayama, S., Kikuchi, H. and Niiyama, T.: Search for Effective Pesticides against Tyrophagus similis Volgin 185

Mizutani, K. and Nakashima, Y.: Development and Morphological Characteristics of Immatures of Two Aphid Hyperparasitoids: Dendrocerus carpenteri (Curtis) (Hymenoptera: Megaspilidae) and Asaphes suspensus (Nees) (Hymenoptera: Pteromalidae) 189

Kimura, Y.: Causes for Increase in the Incidence of San Jose Scale, Diaspidiotus perniciosus in Apple Orchards in Aomori Prefecture 195

Arai, T., Narita, O., Ihara, F., Takanashi, M. and Toyoshima, S.: Occurrence of San Jose Scale Crawler, Diaspidiotus perniciosus, in Apple Trees in Iwate Prefecture 3, Prediction of Crawler Occurrence from Accumulated Temperatures and Comparison of the Predicted Period to the Crawler Occurrence 199

Kushita, T. and Ishiguri, Y.: An Investigation in to the Risk of Oviposition on the Thinned Apple Fruits on the Ground by the Peach Fruit Moth, Carposina sasakii 207

Ono, H., Tamura, H., Suzuki, T. and Nekoduka, S.: Chemical Spray Application for Drift-Reducing Nozzle in Dwarf Apple Orchards and Efficacy of Pesticides for Pest Control 210

Sugahara, S., Takabe, M. and Itou, S.: Pear Damage by Oriental Fruit Moth Grapholita molesta and Peach Fruit Moth Carposina sasakii in Yamagata Prefecture in 2007 217