kϊ{aQ€ο --- The Society of Plant Protection of North Japan
kϊ{aQ€ορ
Ϊ
Annual Report of the Society of Plant Protection of North Japan:
Contents
KATO, H. : Recent oversea trend in epidemics and studied of rice blast disease 1 TSUKIJI, K., KAWAMURA, R. and ONODERA, I : Some characteristic occurrence of rice blast disease on the paddy field reduced pesticide in 1993 3
OSADA, S., SASAHARA, M. and INO, M. : The outbreak of rice blast disease and its related factors in Miyagi prefecture, 1993 1. Seasonal occurrence and its related environmental factors 6
OSADA, S ., INO, M. and SASAHARA, M. : The outbreak of rice blast disease and its related factors in Miyagi prefecture, 1993 2. Disease control and the influence of cold summer on its efficiency 10
OHTA; K. and SAITO, H. : A computer simulation model for rice sheath blight disease 7. Effect of fungicide application timing on control of sheath blight and grain yield of rice plant 14
TAKEUCHI, T. : Influence of cultural conditions in nursery bed on occurrence of bacterial seedling blight of rice 17
TAKEUCHI, T. : A method for testing the effect of seed disinfection for bacterial seedling blight of rice 21
KIKUTA, A. and OIKAWA, T. : Influences of seed disinfectant on the growth of seedling originated from hull-cracked rice 27
CHIBA, K. and NAKATANI, F. : Characters of rice seed samples produced on 1993 and methods of seed disinfection for seedling culture 29
SIMIZU, M. : A simple method for monitoring the sensitivity of Erysiphe graminis f. sp. tritici to triadimefon 32
YASUOKA, S. : Outbreak of wheat scab caused by Fusarium nivale and yield loss of winter wheat in Tokachi, Hokkaido 35
NAITO, S. and SUGIMOTO, T. : Some properties of disease suppressiveness induced by root-rotten sugarbeet 38
OZAWA, S., OBATA, H., YASUOKA, S. and TANAKA, F. : Occurrence of root rot of Chinese yam, caused by Rhizoctonia solani Kuhn, in Hokkaido 43
SAYAMA, A., KOBAYASHI, K. and OGOSHI, A. : Some cultural characteristics and pathogenicity to alfalfa of some Helicobasidium mompa isolates 45
KANEMATU, S., HONDA, K., MIKOSHIBA, Y., MIYAI, S., OHTO, Y. and NAITO, S. : A disorder resembling dwarf disease of soybean that is induced by low temperatures 49
OKUBO, T. : A relationship between time of aphid-control and incidence of soybean dwarf disease 53
OKUBO, T . : Control of soybean dwarf disease by spraying of carbonate 56
ANDO, Y., AKASAKA, Y. and NAKATANI, F. : Searching for Phytophthora blight-resistant sweet pepper stock 58
KIKUCHI, S. and YUUKI, S. : Decreased sensitivity of powdery mildew of cucumber by Sphaerotheca fuliginea to fungicides 60
IWATA, Y ., TAMURACO. and SUMINO, A. : Occurrence of Fusarium wilt of melon caused by Fusarium oxysporum f. sp. melonis which shows different symptoms and parasitism in Hokkaido 62
HAGITA, T. and SASAKI, J. : Occurrence of necrosis of edible lily (Lilium leichtlinii var. maximowiczii Baker) caused by mixed infection of tulip breaking virus (TBV) and unidentified filamentous virus in Hokkaido 67
KATSUBE, K., AKASAKA, Y. and NAKATANI, F. : Biocontrol of Fusarium wilt of spinach by using nonpathogenic Fusarium oxysporum 2. Investigation of inoculation methods 72
MORIYA, S., WATANABE, K. and NISHI, K. : Effects of soil sterilization with hot water injection on clabroot of Chinese cabbage caused by Plasmodiophora brassicae 76
OSADA, S. : Bacterial rot of parsley (Petroselinum crispum Nym.) , caused by Pseudomonas marginalis pv. marginalis (Brown 1918) Stevens 1925 80
SUZUKI, K., SAITO, A., CHAUMPLUK, P., SASAKI, Y. and HIKICHI, Y. : Infection route of cucumber mosaic virus in gentian 1) Detection of CMV from aphids 84
CHAUMPLUK, P., SASAKI, Y. SAITO, A., KOIWA, H., HIKICHI, Y. and SUZUKI, K. : Comparison of two isolates of cucumber mosaic virus (CMV) from gentian plant in Iwate prefecture 88
AKASAKA, Y., ANDO, Y. and NAKATANI, H. : Symptom of leaf spot on gentian (Gentiana spp.) caused by Alternaria sp. 93
KAJI, K., TAIRAKO, K. and SONODA, T. : Effective control of flower rot of gentian caused by Ciborinia sp. using iminoctadine triacetate (BEFRAN LF25) 96
HIROTA, H. : Occurrence of bacterial soft rot of calls incited by Erwinia carotovora subsp. carotovora in Hokkaido prefecture 100
HIROTA, H. : Bacterial stem rot of chrysanthemum caused by Erwinia chrysanthemi in Hokkaido prefecture 104
SUTO, M. and TAKAHASHI, C. : Seasonal prevalence of chrysanthemum white rust in Miyagi prefecture 108
NAKAZAWA, N., FUJITA, K. and FUKUSHI, Y. : Causal agents of pear fruit rot and its control 110
OGATA, T., ITO, K. and OCHIAI, M. : Analysis of a regional characteristic for Japanese pear scab development by utilization of the weather date obtained from AMEDAS (Automated Meteorological Date Acquisition System) 114
YUUKI. S., KIKUCHI, S and DOMON, K. : Susceptibility to gum-soaked canker in sweet cherry varieties 117
YUKITA, K. : Difference of apple cultivers in infection with Valsa canker thruogh fruit pediceles left behind on bourse following after hand-thinnig 122
IWAYA, H. : Effects of organic fertilizers on the occurrence of apple canker with a special reference to the time of application 126
OSANAI, M. and OYAMA, N. : An improvement of a mud treatment by adding bentonite to control apple canker 129
IIMURA, S. : Attack timing and control threshold of the sorghum plant bug, Stenotus rubrovittatus Matsumura (Hemiptera : Miridae) 132
MIYATA, M. : Relation between the stage of rice plant and the occurrence of pecky rice caused by sorghum plant bug, Stenotus rubrovittatus (Matsumura) (Hemiptera : Miridae) 137
SUZUKI, S., IIMURA, S., ITOU, M., TUKIZI, K. and KAWAMURA, R. : Efficient control of rice water weevil, Lissorhoptrus oryzophilus (Coleoptera : Curculionidae) and rice leaf beetle, Oulema oryzae (Coleoptera : Chrysomelidae) based on the control threshold 139
KIDOKORO, T. : On the method for testing insecticidal susceptibility of rice leaf beetle, Oulema oryzae (Coleoptera : Chrysomelidae) by topical application 142
SHIBUYA, S. : Susceptibility of the rice leaf beetle, Oulema oryzae (Kuwayama) (Coleoptera : Chrysomelidae) to the insecticides in Miyagi prefecture 1. Appearance of low susceptible population to the propoxur 145
SAITO, O. : Difference of seasonal prevalence of the seedcorn fly, Delia platura (Diptera : Anthomyiidae) between surveyed by the kairomone trap and the fish meal trap in Sapporo, Hokkaido 147
TORIKURA, H. : New record of the black bean aphid, Aphis fabae Scopoli (Homoptera : Aphididae) from Hokkaido 150
TORIKURA, H. : Yield loss of potato by the infestation of melon aphid, Aphis gossypii (Homoptera : Aphididae) 153
NAKATA, T. : Seasonal prevalence of greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Homoptera : Aleyrodidae) in the potato field in Hokkaido 156
SAITO, O. : Tolerance of the diamondback moth, Plutella xylostella (L.) (Lepidoptera : Yponomeutidae), to low constant temperature 158
SAITO, O. : Hibernation of the diamondback moth, Plutella xylostella (L.) (Lepidoptera : Yponomeutidae), in the field or in the greenhouse at Sapporo, Hokkaido, 1984-1986 160
MIZUKOSHI, T. : Low susceptibility of the diamondback Plutella xylostlla (Lepidoptera : Yponomeutidae), to chitin synthesis inhibitor in the Oshima district of Hokkaido in 1993 163
SATO, K., MOCHIDA, O. and KIKUCHI, A. : Control of the diamond back moth (Plutella xylostella) (Lepidoptera :Yponomeutidae) by egg-parasitoids (Trichogramma) 1
0. Relationships among density of Trichogramma chilonis (Hymenoptera : Trichogrammatidae)released, percentage of parasitism, and mortality due to host feeding 168
IWASAKI, A. : Management of cabbage caterpillars in Hokkaido by using visual damage thresholds 171
MIZUKOSHI, T. : Damage of carabid beetles on spring seeding radish in the central region of the Oshima district of Hokkaido III. Influence of temperature on consumption of radish roots 175
WATANABE, K. and YUUKI, S. : Seasonal occurrence of Rhopalosiphum insertum (Walker) (Homoptera : Aphididae) on apple and control 177
MIYATA, M. : Damage to chrysanthemum by sucking of a plant bug, Lygocoris lucorum (Meyer-Dur) (Hemiptera : Miridae) 181
KIKUCHI, O. : Parasitism of thrips on Chrysanthemum in Miyagi prefecture 184
HAYAKAWA, H. and YAMASHITA, N. : Studies on mass rearing methods of the dung beetle, Onthophagus gazella 11. Relationship between the solidity of medium and the number of emerged adults 186
HAYAKAWA, H. and YAMASHITA, N. : Studies on mass rearing methods of the dung beetle, Onthophagus gazella 12. Relationship between the amount of water poured on medium and the number of emerged adults 188
AMANO, K. : Laboratory tests to determine lethal effects of three kinds of insecticides on Musca hervei (Diptera : Muscidae) adults 190
MURAI, T. and SATO, N. : Survey of dry bulb mite, Aceria tulipae (Keifer) (Acarina : Eriophyidae), on garlic in Aomori prefecture 192
KIMURA, Y. and KUSHITA, T. : Susceptibility of Panonychus ulmi (Koch) and Tetranychus urticae Koch (Acari : Tetranychidae) to three acaricides in Aomori prefecture 195
SASAKI, M., SATO, R. and ABE, N. : Susceptibility of the two-spotted spidermite, Tetranychus urticae Koch (Acarina : Tetranychidae) to acaricides in Fukushima prefecture 1. Changes of susceptibility to some acaricides 198
SASAKI, M. and SATO, R. : Susceptibility of the two-spotted spidermite, Tetranychus urticae Koch (Acarina : Tetranychidae) to acaricides in Fukushima prefecture 2. Susceptibility of the local population to some acaricides 202