HITAHR Brief

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Now showing 1 - 10 of 10
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    Pseudocercospora Leaf Spot of Raphis Palm
    (University of Hawaii, 1989-06) Uchida, J.Y. ; Nagata, N.M.
    The cause of leaf spots with characteristic chlorosis and mosaic patterns on Raphis species was determined. The disease is illustrated and strict sanitation is recommended.
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    Cylindrocladium Rot of Spathiphyllum
    (University of Hawaii, 1989-08) Uchida, J.Y.
    A pathogen named Cylindrocladium spathiphylli was identified. Strict sanitation in the nursery, selection of varieties, and use of fungicide were recommended.
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    Calonectria Leaf Spot of Forster Sentry Palm
    (University of Hawaii, 1989-06) Uchida, J.Y. ; Aragaki, M. ; Iwata, R.Y.
    An outbreak of leaf spots occurred on Forster sentry palm in nursery production. The causal organism was determined and its etiology described. Reducing free moisture in the growing environment and use of fungicide were suggested as means to control the disease.
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    Foliar Blight of Spathyphyllum Caused by Phytophthora
    (University of Hawaii, 1989-12) Uchida, J.Y.
    This is the first report of severe foliage damage to spathiphyllum in Hawaii caused by Phytophthora nicotianae, although the disease has been observed in Florida. The disease symptoms are illustrated, and suggestions for cultural practices to avoid its incidence are listed.
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    Heliconia Root Rot and Foliar Blight Caused by Cylindrocladium
    (University of Hawaii, 1989-12) Uchida, J.Y. ; Aragaki, M. ; Yahata, P.S.
    Leaf loss and plant decline in some heliconia fields were investigated. A Cylindrocladium species was isolated and determined to be pathogenic. Experience in controlling C. spathiphylli on spathyphyllum suggested some control approaches, although fungicides had not been found effective. Further studies on the heliconia pathogen were indicated.
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    Foliar Blight of Leea Caused by a Phytophthora Species
    (University of Hawaii, 1990-07) Aragaki, M. ; Uchida, J.Y. ; Yahata, P.S. ; Kadooka, C.Y.
    A leaf spot and blight of red and green leea (Leea coccinea, West Indian holly) observed at commercial nurseries was investigated. A persistent Phytophthora species new to Hawaii was isolated. Fungicides tested provided only limited control, so treatments need to be accompanied by cultural control options
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    A New Aglaonema Foliar Blight and Crown Rot
    (University of Hawaii, 1993-02) Uchida, J.Y. ; Yahata, P.S.
    The cause of leaf, petiole, collar, and cane rots of aglaonema in Hawaii was determined to be Fusarium subglutinans. A bacterial leaf rot was also investigated. Disease management advice is given.
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    Dracaena Decline and Root Rot
    (University of Hawaii, 1992-05) Uchida, J.Y. ; Kadooka, C.Y. ; Aragaki, M.
    Isolation and inoculation studies attempted to identify the cause of dracaena decline. Suspicion was cast on Pythium graminicola, but further studies were indicated as needed to resolve the decline problem.
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    Pythium Root Rot of Spathiphyllum
    (University of Hawaii, 1990-01) Uchida, Janice Y.
    Both Pythium splendens and Cylindrocladium spathiphylli were found on roots of spathyphyllum. Strict sanitation and other cultural control practices, in addition to fungicide applications, were recommended.
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    Common Mistakes in Anthurium Blight Control Pracitices: An Aid to Anthurium Blight Management
    (University of Hawaii, 1990-06) Sewake, Kelvin T. ; Kawabata, Andrew F. ; Nishijima, Wayne T. ; Higaki, Tadashi
    Recommendations for practices to control anthurium blight included propagation with tissue culture, daily renewal of disinfestation solution, caution in applying fertilizer, nematode control, midday irrigation, drainage improvement, frequent roguing, and keeping medium pH between 5.5 and 7.
University of Hawaii