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Toshio KIJIMA
1992 Volume 1992 Issue 39 Pages
1-5
Published: November 01, 1992
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Hideyuki NOZAWA, Takasi FUKUBA
1992 Volume 1992 Issue 39 Pages
7-8
Published: November 01, 1992
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Yoshibumi OHNO, Seiichi OKUDA, Tomohide NATSUAKI, Michiaki TERANAKA
1992 Volume 1992 Issue 39 Pages
9-11
Published: November 01, 1992
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Four nonpathogenic strains of fluorescent pseudomonads (Bf-2, Bf-10, Bf-11 and Bf-15) isolated from field soil were revealed to be antagonistic to
Erwinia carotovora subsp.
carotovora on King B medium. These bacteria were applied to control of bacterial seedling blight of rice caused by
Pseudomonas plantarii. In pot experiment, the incidence of the disease was strongly reduced with immersion of infected seeds in suspension of fluorescent antagonistic bacteria (10
9cfu/m
l). Soil injection of the bacterial suspension was also effective to reduction of the disease. It was suggested that a part of the mechanism of this suppression was responsible for chemotaxis of fluorescent pseudomonads toward the exudates from rice seeds, though the competition between pathogenic bacteria and antagonistic one for iron in nutrient substratum was significantly relevant.
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Kiyoshi ISHIGURO, Nagao HAYASHI, Hideki NAITO
1992 Volume 1992 Issue 39 Pages
13-16
Published: November 01, 1992
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To assess the effects of fungicides on enlargement of lesion lesions of rice blast and spore formation on the lesions, several fungicides were sprayed to rice plants after the appearance of the lesions. The fungicides used were isoprothilane, EDDP, IBP, kasugamycin, blastcidin-S and ferimzone. All fungicides inhibited lesion enlargement and spore formation. A linear relation was found between days after application of each fungicide and an area of a lesion during a particular period. A linear, quadratice, or exponential equation was fitted to the relation between days after the application and spore formation on a lesion.
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Keizo IGUCHI
1992 Volume 1992 Issue 39 Pages
17-19
Published: November 01, 1992
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Takeyuki NAKAYAMA, Hidekatu TERASHIMA, Kazuo TAKEDA, Makoto MINAMISHIM ...
1992 Volume 1992 Issue 39 Pages
21-24
Published: November 01, 1992
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Kouki OHTA, Masanao SATOU, Hideki KURODA, Makoto KAWAI, Yoshifumi ITO, ...
1992 Volume 1992 Issue 39 Pages
25-28
Published: November 01, 1992
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Hiriyasu SHIOZAWA, Tsuneo TSUCHIZAKI
1992 Volume 1992 Issue 39 Pages
29-32
Published: November 01, 1992
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Ken NOMURA, Satoshi KASHIWAZAKI, Eiichiro NAKATA, Yoshihisa TSUZAKI, H ...
1992 Volume 1992 Issue 39 Pages
33-35
Published: November 01, 1992
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Kazufum NISHI, Takeshi SATO, Tokuji FUKUDA
1992 Volume 1992 Issue 39 Pages
37-38
Published: November 01, 1992
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Kazufumi NISHI, Takeshi SATO, Tokuji FUKUDA
1992 Volume 1992 Issue 39 Pages
39-42
Published: November 01, 1992
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Satoshi NODA, Yasuaki FUJITA
1992 Volume 1992 Issue 39 Pages
43-44
Published: November 01, 1992
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Ryuji OSUKA, Taturo IWASE, Hisatoshi KOBAYASHI, Yoshiyuki KAMIYA, Taka ...
1992 Volume 1992 Issue 39 Pages
45-48
Published: November 01, 1992
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Ryuji OSUKA, Taturo IWASE, Hisatoshi KOBAYASHI, Takahiro MAKINO
1992 Volume 1992 Issue 39 Pages
49-52
Published: November 01, 1992
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Ken WATANABE, Ikuko YAMAZAKI, Katsuyoshi NAKAZAKI, Singo YONEYAMA
1992 Volume 1992 Issue 39 Pages
53-55
Published: November 01, 1992
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Satoshi SHIBATA, Nobuo HAYASHI
1992 Volume 1992 Issue 39 Pages
57-59
Published: November 01, 1992
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Toshio KIJIMA, Masayuki AMAGAI, Hideo GOHMA
1992 Volume 1992 Issue 39 Pages
61-64
Published: November 01, 1992
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Jouji TSUNEMI, Kiichi NAKAYAMA, Seiju ISHIKAWA, Sinichi UENO
1992 Volume 1992 Issue 39 Pages
65-67
Published: November 01, 1992
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Tokiya SHIMIZU, Reiichi AKANUMA, Kaoru HANADA
1992 Volume 1992 Issue 39 Pages
69-71
Published: November 01, 1992
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Tosimasa SHIRAISHI, Nobuo HAYASHI, Kouiti TIGIRA
1992 Volume 1992 Issue 39 Pages
73-75
Published: November 01, 1992
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Mitsuaki ONO, Kazunori ICHIKAWA, Shigehumi TSUTIYA
1992 Volume 1992 Issue 39 Pages
77-79
Published: November 01, 1992
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Young-An SHIN, Nobuo TEZUKA
1992 Volume 1992 Issue 39 Pages
81-83
Published: November 01, 1992
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Effects of soil moisture and inoculum density on the incidence of Phytophthora blight of red pepper were investigated. The disease appeared in wet soil conditions (pF 1.8 and 2.3), whereas no disease in dry soil (pF 2.8).
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Tsuneo CHIBA, Yasunori TOMITA
1992 Volume 1992 Issue 39 Pages
85-86
Published: November 01, 1992
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Mihoko KUROSAWA, Yasuhiko NAKAZAWA, Masakazu YAMADA, Norio OHTSUKA
1992 Volume 1992 Issue 39 Pages
87-89
Published: November 01, 1992
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Taeko TAKEUCHI
1992 Volume 1992 Issue 39 Pages
91-93
Published: November 01, 1992
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Toshihiko SHOJI, Rokuo ZENBAYASHI
1992 Volume 1992 Issue 39 Pages
95-96
Published: November 01, 1992
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Takashi OHSAWA
1992 Volume 1992 Issue 39 Pages
97-98
Published: November 01, 1992
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Kiichi NAKAYAMA, Mitsuro KAMEYA-IWAKI, Seiji ISHIKAWA, Joji TSUNEMI
1992 Volume 1992 Issue 39 Pages
99-102
Published: November 01, 1992
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Attenuated strains of Watermelon mosaic virus-2 (WMV-2) (WI-9 and WII-5) showed strong crossprotection to the infection of severe strain of WMV-2, and did scarcely show the reduction of growth in bottle gourd.
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Kei OGAWA, Yoichi TRIGOE, Tetsuro AMANO
1992 Volume 1992 Issue 39 Pages
103-106
Published: November 01, 1992
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Maya ISHIZUKA, Toshiichi HIRANO
1992 Volume 1992 Issue 39 Pages
107-109
Published: November 01, 1992
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Hideo KISHIRA, Mutso SUGA, Shigetou NAMBA, Shuichi YAMASHITA, Kenichir ...
1992 Volume 1992 Issue 39 Pages
111-112
Published: November 01, 1992
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A new elongated virus was isolated from symtomless wasabi (
Eutrema wasabi M.) plants. The virus has a peak in length distribution at 750-780nm and was transmitted by sap but not by aphids (
Myzus persicae and
Lipaphis erysimi). The host range was restricted to wasabi. No inclusion body characteristic of potyvirus was observed in infected tissues of wasabi. The virus did not serologically related to turnip mosaic virus. The name of wasabi latent virus is proposed.
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Kouki OHTA, Takayuki NAKANO
1992 Volume 1992 Issue 39 Pages
113-115
Published: November 01, 1992
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Yutaka SHIMAZAKI, Atsushi NOGUCHI
1992 Volume 1992 Issue 39 Pages
117-119
Published: November 01, 1992
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Difference in rate of pathogenic to total Fusarium oxysporum population between heat-treated and non-treated soil
Katsuto KUNIYASU, Toshiaki TAKEHARA
1992 Volume 1992 Issue 39 Pages
121-123
Published: November 01, 1992
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Seiji ISHIKAWA, Kiyoshi HAYAMA, Kiichi NAKAYAMA, Nobuhiro TEZUKA
1992 Volume 1992 Issue 39 Pages
125-127
Published: November 01, 1992
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A new disease of strawberry was found in Tochigi Prefecture in 1988 and 1991. The base of petioles near the soil surface which changed initially into water-soaked appearance was covered with white and silky mycelia with sclerotia similar to mustard seeds in size. Fungul isolates obtained from the diseased strawberry were pathogenic to 7 species of plants including strawberry, tomato and chinese chive. Colonies of the isolates on PDA medium were white, rich in aerial mycelial strands. Clamp connections were observed on hyphae of the isolates. Sclerotia were nearly spherical and 0.9-2.1mm in diameter. The pathogenic fungus was identified as
Sclerotium rolfsii Sacc. on the basis of these morphological and pathological characteristics.
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Seiji ISHIKAWA, Kiichi NAKAYAMA, Jouji THUNEMI, Yasuhiko NAKAZAWA
1992 Volume 1992 Issue 39 Pages
129-133
Published: November 01, 1992
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A new causal fungus of strawberry anthracnose was found in Tochigi Prefecture in 1991. The symptoms of the disease appeared on leaves, petioles and runners in nurseries. The lesions are dark brown to nearly black and occur on the margins and tips of leaflets. Mycelia of the fungus are white, becoming pinkish grey, and conidial masses are salmon pink on PDA medium. Sclerotia and setae are absent. Conidia are hyaline, single-celled and fusiform with the dimensions of 8.9-16.2×3.2-4.9 (15.5×4.4)μm. Appressoria are dark brown, clavate and 5.9-8.9×4.1-8.1 (7.8×5.7)μm in dimensions. The fungus is pathogenic to tomato, sweet pepper and rocket larkspur. Optimum temperature for mycelial growth on PDA medium was about 25°C. Based on these morphological and pathological characteristics, the causal fungus was identified as
Colletotrichum acutatum Simmonds.
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Sigeru Akita
1992 Volume 1992 Issue 39 Pages
135-136
Published: November 01, 1992
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Seisaku UMEMOTO
1992 Volume 1992 Issue 39 Pages
137-140
Published: November 01, 1992
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Conidia of scab fungus (
Venturia nashicola), produced on the Japanese pear leaves, were usually dispersed by rainfall. The number of conidia dispersed was greatest just after the start of rainfall and gradually decreased. The rate of dispersal of the conidia re-produced on the leaf lesions was similar to the rate observed during the first experiment. The number of conidia re-produced and dispersed in the second experiment was approximately 20% of the number existing at the start of rainfall in the first experiment.
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Hidekazu YAMAGUCHI, Yasuhiko IWANAMI, Katumi HIROMA
1992 Volume 1992 Issue 39 Pages
141-142
Published: November 01, 1992
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Yasumitsu KAWAI, Yosinari SAITO, Akihiko IIJIMA
1992 Volume 1992 Issue 39 Pages
143-144
Published: November 01, 1992
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Akihiko IIJIMA, Satoshi TOKUNAGA
1992 Volume 1992 Issue 39 Pages
145-148
Published: November 01, 1992
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Akihiko IIJIMA, Hidekazu OGAWA, Jun YUMOTO, Masahide OKAZAWA
1992 Volume 1992 Issue 39 Pages
149-151
Published: November 01, 1992
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Akihiko IIJIMA, Hidekazu OGAWA, Jun YUMOTO, Masahide OKAZAWA
1992 Volume 1992 Issue 39 Pages
153-154
Published: November 01, 1992
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Akihiko IIJIMA
1992 Volume 1992 Issue 39 Pages
155-156
Published: November 01, 1992
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Kiichiro SEKIYAMA, Seiji UEMATSU
1992 Volume 1992 Issue 39 Pages
157-160
Published: November 01, 1992
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A
Phytophthora species isolated from crown rot of baby's breath,
Gypsophila paniculata L., were identified as
P. nicotianae var.
payasitica. An inoculation test showed that pathogenicity of the 8 isolates to baby's breath was severe. Soil fumigation with chloropicrin, chloropicrin methyl bromide or methyl isothiocyanate D-D, soil application with metalaxyl or fungicidal soil drench with fosetyl were recommendable effective for control of the disease, and hymexazol metalaxyl, oxadixyl mancozeb, propamocarb hydrochloride or echlomezol reduced the damage of the disease.
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Keiko T. NATSUAKI, Daisuke MATSUMOTO, Keiichi TOMARU
1992 Volume 1992 Issue 39 Pages
161-162
Published: November 01, 1992
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An isolate of tobacco mosaic virus (TMV) was isolated from
Physalis alkekengi L. var.
franchetii (Japanese lantern plants, Houzuki) which is commercially sold as ornamental plants. The plants showed mosaic and distortion of fruits. The isolate was identified as TMV (tomato strain) by morphology, host range and serology.
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Seiji UEMATSU, Tooru TAKAHASHI, Kiichiro SEKIYAMA
1992 Volume 1992 Issue 39 Pages
163-165
Published: November 01, 1992
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Sclerotium crown rots of
Delphinium elatum, ×
Solidaster luteus and
Chlorophytum comosum occurred in Chiba Prefecture in 1991, 1987 and 1991, respectively. A
Sclerotium species isolated from diseased plants was identified as
S. rolfsii. Inoculation experiments showed that the fungus was the causal agent of the diseases.
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Seiji UEMATSU, Tooru TAKAHASHI, Mikio MATSUMOTO, Kouji ISHIKAWA, Kiich ...
1992 Volume 1992 Issue 39 Pages
167-169
Published: November 01, 1992
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A
Rhizoctonia species isolated from crown rot of Delphinium spp. was identified as
R. solani AG 2-1. An inoculation experiment showed that the fungus was the causal agents of the disease. Fungicidal soil drenches with pencycuron or tolclofos-methyl, and soil fumigation with chloropicrin, chloropicrin·methyl bromide, methyl isothiocyanate · D-D or dazomet were reduced the damage.
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Jun TAKEUCHI, Toshiichi HIRANO
1992 Volume 1992 Issue 39 Pages
171-172
Published: November 01, 1992
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Atsushi NOGUCHI, Yutaka SHIMAZAKI
1992 Volume 1992 Issue 39 Pages
173-175
Published: November 01, 1992
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