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Plant Disease

Please Note: The CTAHR publications database reflects over a century of study by researchers and extension agents in the College. Much of the information contained in earlier publications is still of practical and technical use, and the documents are an unparalleled resource for Hawai'i agricultural and horticultural history. However, some publications also make recommendations that are no longer in accordance with more recent advances in understanding. For instance, they may specify pesticides or methods of using them that are no longer allowable under current State or federal regulations. Before using any pesticide, always read its label for approved uses, and follow label directions for application. Other publications may advocate the use of particular plant species that are now considered invasive. The Invasive Species Council is continually making assessments on this matter; see their Web site at http://www.hawaiiinvasivespecies.org for the latest recommendations on identification and control of these species.

‘Awa dieback in Hawaii  [PD-18]  [2000]  PDF    
‘Awa root-knot disease  [PD-20]  [2001]  PDF    
A new aglaonema foliar blight and crown rot  [HB-106]  [1993]  PDF    
A new phytophthora fruit and heart rot of coconut    [1992]  PDF     For sale
A Simplified Method of Multiplying Bacterial Wilt-Free Edible Ginger (Zingiber officinale) in Pots  [PD-93]  [2013]  PDF    
Abutilon mosaic  [PD-39]  [2008]  PDF    
An ally in the war against nematode pests: using sunn hemp as a cover crop to suppress root-knot nematodes  [PD-32]  [2006]  PDF    
An ally in the war against nematode pests: using sunn hemp as a cover crop to suppress root-knot nematodes, translation in Cambodian  [PD-32-2]  [2006]  PDF    
An ally in the war against nematode pests: using sunn hemp as a cover crop to suppress root-knot nematodes, translation in Ilocanoa  [PD-32-1]  [2006]  PDF    
An ally in the war against nematode pests: Using sunn hemp as a cover crop to suppress root-knot nematodes, Translation in Lao  [PD-32-4]  [2006]  PDF    
An ally in the war against nematode pests: Using sunn hemp as a cover crop to suppress root-knot nematodes, Translation in Thai  [PD-32-3]  [2006]  PDF    
Anthracnose of avocado  [PD-58]  [2008]  PDF    
Anthracnose of Papaya in Hawaii  [PD-103]  [2014]  PDF    
Anthurium decline: options for controlling burrowing nematodes  [PD-26]  [2004]  PDF    
Bacterial blight of anthurium  [CFS-AN-4A]  [1985]  PDF    
Bacterial diseases of dendrobium  [RES-158]  [1995]  PDF    
Bacterial leaf blight of aglaonema  [PD-64]  [2009]  PDF    
Bacterial leaf blight of fishtail palm  [PD-65]  [2009]  PDF    
Bacterial leaf blight of panax (Polyscias guilfoylei)  [PD-75]  [2011]  PDF    
Bacterial leaf spot of hibiscus in Hawaii  [PD-72]  [2011]  PDF    
Bacterial Wilt of Edible Ginger in Hawaii  [PD-99]  [2013]  PDF    
Bamboo mosaic  [PD-76]  [2011]  PDF    
Banana bunchy top virus  [PD-12]  [1997]  PDF    
Black flag of noni (Morinda citrifolia) caused by a Phytophthora species  [PD-19]  [2001]  PDF    
Black leaf streak of banana  [PD-50]  [2008]  PDF    
Black Pod Rot of Cacao Caused by Phytophthora palmivora  [PD-108]  [2015]  PDF    
Black spot of rose in Hawaii  [PD-80]  [2012]  PDF    
Blossom-end rot of tomato in Hawaii  [PD-85]  [2012]  PDF    
Blueberry rust  [PD-51]  [2008]  PDF    
Boron deficiency of palms in Hawaii  [PD-83]  [2012]  PDF    
Boron Deficiency of Papaya  [PD-91]  [2012]  PDF    
Bunchy top disease of bananas  [CFS-BAN-4A]  [1989]  PDF    
Burrowing Nematode on anthurium: recognizing symptoms, understanding the pathogen,and preventing disease  [PD-24]  [2003]  PDF    
Burrowing nematode, a major pest in the tropics  [PD-21]  [2001]  PDF    
Calonectria leaf spot of Forster sentry palm  [HB-77]  [1989]  PDF    
Cassytha filiformis  [PD-42]  [2008]  PDF    
Cephaleuros species, the plant-parasitic green algae  [PD-43]  [2008]  PDF    
Cercospora leaf spot and berry blight of coffee  [PD-41]  [2008]  PDF    
Cercospora leaf spot of eggplant  [PD-82]  [2012]  PDF    
Checklist of plant diseases in Hawaii  [ITS-022]  [2009]  PDF    
Citrus melanose  [PD-59]  [2008]  PDF    
Citrus scab  [PD-60]  [2008]  PDF    
Citrus tristeza virus in Hawaii  [PD-77]  [2011]  PDF    
Coconut and Palm Pests Alert  [Coconut_and_Palm_Pests_brochure]  [2012]  PDF    
Coffee decline caused by the Kona coffee root-knot nematode  [PD-16]  [1999]  PDF    
Colletotrichum leaf spot of red sealing wax palm  [PD-10]  [1997]  PDF    
Common mistakes in anthurium blight control practices: an aid to anthurium blight management  [HB-091]  [1990]  PDF    
Corky Bark Disease of Rambutan  [PD-86]  [2012]  PDF    
Cucumber Mosaic Virus in Hawaii  [PD-101]  [2014]  PDF    
Cylindrocladium root rot of spathiphyllum  [HB-78]  [1989]  PDF    
Dasheen mosaic of edible and ornamental aroids  [PD-44]  [2008]  PDF    
Disease index of the rust Puccinia psidii on ohia in Hawaii  [PD-38]  [2008]  PDF    
Disease index of the rust Puccinia psidii on rose apple in Hawai‘i  [PD-37]  [2008]  PDF    
Diseases and pests of carnation  [RES-107]  [1989]  PDF    
Diseases of ginger (Zingiber officinale) in Hawaii  [C2-62]  [1964]  PDF    
Diseases of heliconia in Hawaii  [RES-159]  [1995]  PDF    
Diseases of leatherleaf fern caused by Calonectria and Cylindrocladium species  [PD-11]  [1997]  PDF    
Diseases of papaya (Carica papaya L.) in Hawaii  [B-136]  [1965]  PDF    
Diseases of taro in Hawaii and their control; with notes on field production  [C2-18]  [1941]  PDF    
Diseases of tuberose in Hawaii  [C1-427]  [1968]  PDF    
Dracaena decline and root rot  [HB-103]  [1992]  PDF    
Fairy rings: toadstools, stinkhorns, and puffballs  [PD-49]  [2008]  PDF    
Fig Rust in Hawaii  [PD-100]  [2014]  PDF    
Foliar blight of leea caused by a Phytophthora species  [HB-093]  [1990]  PDF    
Foliar blight of spathiphyllum caused by Phytophthora  [HB-84]  [1989]  PDF    
Foliar nematodes on orchids in Hawaii  [PD-13]  [1998]  PDF    
Fungal diseases of dendrobium flowers  [RES-133]  [1991]  PDF    
Gibberella and Fusarium Ear Rots of Maize in Hawaii  [PD-102]  [2014]  PDF    
Glyphosate injury to coffee plants  [PD-56]  [2008]  PDF    
Growing dendrobium orchids in Hawaii; production and pest management guide  [dendrobium_production]  [1999]  PDF    
Hawai‘i Landscape Plant Pest Guide: Parasitic Seed Plants and Fungi  [PD-110]  [2016]  PDF    
Hawai‘i Landscape Plant Pest Guide: Plant Diseases  [PD-105]  [2015]  PDF    
Hawaiian mistletoes (Korthalsella species)  [PD-62]  [2009]  PDF    
Heart and Root Rots of Pineapple  [PD-106]  [2015]  PDF    
Heliconia root rot and foliar blight caused by Cylindrocladium  [HB-085]  [1989]  PDF    
Hibiscus blight caused by Athelia  [CFS-HIB-4A]  [1989]  PDF    
Host list of plants susceptible to tomato spotted wilt virus (TSWV)  [RES-078]  [1987]  PDF    
Identification guide for diseases of tea (Camellia sinensis)  [PD-33]  [2006]  PDF    
Identifying anthurium flower injuries  [PD-25]  [2004]  PDF    
Improvements in taro culture and reduction in disease levels  [PD-22]  [2002]  PDF    
Integrated pest management for ‘awa (kava, Piper methysticum)  [PD-28]  [2005]  PDF    
Java black rot of Okinawan sweetpotato  [PD-55]  [2008]  PDF    
Kweilingia rust of bamboo in Hawaii  [PD-74]  [2011]  PDF    
Landscape disease problems in Hawaii  [PD-67]  [2009]  PDF    
Late blight of tomato (Phytophthora infestans)  [PD-45]  [2008]  PDF    
Leaf Spot of Beach Morning-Glory  [PD-95]  [2013]  PDF    
Lightning injury to plants  [PD-40]  [2008]  PDF    
Maize chlorotic mottle  [PD-79]  [2011]  PDF    
Major basil pests in Hawaii: Three economically important basil pests as of 2012  [PD-92]  [2012]  PDF    
Major basil pests in Hawaii: Three economically important basil pests as of 2012 (Chinese translation)  [PD-92-1-Chinese]  [2013]  PDF    
Major Papaya Diseases in Hawaii (poster)  [papaya_disease_poster]  [2013]  PDF    
Management practices to prevent and control plant diseases  [PD-14]  [1998]  PDF    
Managing coffee nematode decline  [PD-23]  [2002]  PDF    
Mango anthracnose (Colletotrichum gloeosporiodes)  [PD-48]  [2008]  PDF    
Mango powdery mildew  [PD-46]  [2008]  PDF    
Na hoao no ke pale ana i ka pala o ke kalo  [PB-004]  [1903]  PDF    
Noni root knot, a destructive disease of Morinda citrifolia in Hawaii  [PD-27]  [2005]  PDF    
Papaya ringspot virus (PRV): a serious disease of papaya  [CFS-PA-4A]  [1989]  PDF    
Phytophthora blight of papaya  [PD-53]  [2008]  PDF    
Phytophthora diseases of orchids in Hawaii  [RES-129]  [1991]  PDF    
Plant-parasitic nematodes and their management  [PD-15]  [1998]  PDF    
Plumeria rust  [PD-61]  [2009]  PDF    
Postharvest rots of banana  [PD-54]  [2008]  PDF    
Potassium Deficiency of Palms in Hawaii  [PD-89]  [2012]  PDF    
Potato Virus Y: A Pathogen Associated with an Emerging Disease of Poha in Hawaii  [PD-109]  [2015]  PDF    
Powdery Mildew of Garden Vegetables in Hawaii  [PD-98]  [2013]  PDF    
Powdery Mildew of Papaya in Hawaii  [PD-90]  [2012]  PDF    
Powdery mildew of poinsettia  [PD-87]  [2012]  PDF    
Protecting crops from nematode pests: using marigold as an alternative to chemical nematicides  [PD-35]  [2007]  PDF    
Pseudocercospora leaf spot of raphis palm  [HB-76]  [1989]  PDF    
Pythium root rot of spathiphyllum  [HB-090]  [1990]  PDF    
Rapid ‘Ohi‘a Death (Ceratocystis Wilt of ‘Ohi‘a)  [PD-107]  [2015]  PDF    
Raspberry late leaf rust in Hawaii caused by Pucciniastrum americanum  [PD-73]  [2011]  PDF    
Rhizopus rot of jackfruit  [PD-29]  [2005]  PDF    
Rhizopus soft rot of sweetpotato  [PD-68]  [2009]  PDF    
Root-knot nematodes on cucurbits in Hawaii  [PD-84]  [2012]  PDF    
Rust of Canna Lily  [PD-96]  [2013]  PDF    
Rust of ko‘oloa‘ula (Abutilon menziesii)  [PD-31]  [2005]  PDF    
Rust of lemongrass  [PD-57]  [2008]  PDF    
Rust of Tree Heliotrope  [PD-88]  [2012]  PDF    
Rusts of Acacia koa: Atelocauda digitata (gall rust)  [PD-63]  [2009]  PDF    
Rusts of Ilima (Sida fallax)  [PD-97]  [2013]  PDF    
Serious economic pests of coffee that may accidentally be introduced to Hawaii  [RES-156]  [1995]  PDF    
Shot hole of 'awa  [PD-66]  [2009]  PDF    
Solarization and cover cropping as alternatives to soil fumigants for nematode management in Hawaii’s pineapple fields  [SCM-29]  [2010]  PDF    
Sooty mold  [PD-52]  [2008]  PDF    
Stem bleeding of coconut palm  [PD-30]  [2005]  PDF    
Survey of nematodes on banana in Hawaii, and methods used for their control  [PD-69]  [2009]  PDF    
Taro leaf blight in Hawaii  [PD-71]  [2011]  PDF    
Taro Vein Chlorosis  [PD-111]  [2016]  PDF    
The root rot of taro  [B-2]  [1902]  PDF    
Tomato spotted wilt  [PD-81]  [2012]  PDF    
Tomato spotted wilt virus on anthurium  [PD-17]  [1999]  PDF    
Tomato yellow leaf curl  [PD-70]  [2010]  PDF    
Tomato yellow leaf curl virus-resistant varieties for commercial production  [PD-78]  [2011]  PDF    
Use of living and dying mulches as barriers to protect zucchini from insect-caused viruses and phytotoxemias  [PD-36]  [2008]  PDF    
Using protector plants to guard crops from aphid-borne non-persistent viruses  [SCM-18]  [2007]  PDF    
Volcanic emissions injury to plant foliage  [PD-47]  [2008]  PDF    
Watermelon trials in Hawaii  [C2-68]  [1968]  PDF    
White Rust of Cruciferous Vegetables  [PD-94]  [2013]  PDF    
Winter diseases of lettuce  [CFS-LE-4(A)]  [1986]  PDF    
Zinc deficiency in tea (Camellia sinensis)  [PD-34]  [2006]  PDF    
Zucchini Yellow Mosaic  [PD-104]  [2014]  PDF