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Permanent Link: http://ufdc.ufl.edu/IR00002994/00001
 Material Information
Title: Disease Control in Passion Fruit (Passiflora edulis)
Physical Description: Fact Sheet
Creator: Simone, Gary W.
Publisher: University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
Place of Publication: Gainesville, Fla.
Publication Date: 1999
 Notes
Acquisition: Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Melanie Mercer.
Publication Status: Published
General Note: "Date reviewed: June 1999."
General Note: "PDMG-V3-25"
 Record Information
Source Institution: University of Florida Institutional Repository
Holding Location: University of Florida
Rights Management: All rights reserved by the submitter.
System ID: IR00002994:00001


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PDMGV325 Disease Control in Passion Fruit (Passiflora edulis) 1 Gary W. Simone, Ph.D.2 1. This document is PDMG-V3-25, part of the 2000 Plant Disease Management Guide Volume 3, one of a series of the Department of Plant Pathology, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Date reviewed: June 1999. Please visit the EDIS Web site at http://edis.ifas.ufl.edu. 2. Gary W. Simone, Ph.D., Extension Plant Pathologist, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, 32611. The Institute of Food and Agricultural Sciences is an equal opportunity/affirmative action employer authorized to provide research, educational information and other services only to individuals and institutions that function without regard to race, color, sex, age, handicap, or national origin. For information on obtaining other extension publications, contact your county Cooperative Extension Service office. Florida Cooperative Extension Service/Institute of Food and Agricultural Sciences/University of Florida/Christine Taylor Waddill, Dean. See Table 1 for a list of common passion fruit diseases. ALTERNARIA LEAF SPOT (Alternaria passiflorae) Symptoms : Brown spot disease can develop on both leaves and fruit. Leaf infection initiates as small reddishspots from 1/16-7/8 inch in diameter. Spots enlarge developing a zonate appearance and may be water soaked during highly moist periods. Leaf drop is common. Fruit infection can be recognized as sunken necrotic areas, reddishin color and from 0.5-2 cm in diameter. The fungus is windborne and rainand is favored by wet weather. Chemical Controls : See Table 2 ANTHRACNOSE (Glomerella cingulata/Colletotrichum gloeosporiodes) Symptoms : Leaf infection produces brown lesions with dark brown borders. The fungus can also invade branches, twigs and tendrils causing brown cankers that kill distal plant parts. Cultural Controls : See Table 2. FUSARIUM STEM CANKER (Fusarium solani ) Symptoms : Sunken, discolored stem lesions develop at soil line and extend several centimeters up the vine. Affected plants exhibit increasing periods of wilt until plant death occurs. During moist weather, the stem cankers may exhibit a white to pink fungal growth. Root knot nematodes may accelerate disease. Cultural Controls : Cultivar exhibit more vigor if grafted onto yellow passion vine root stock. Dead plants should not be immediately replaced without a 6 month 1 year follow-up period. Chemical Controls : No EPA-registered products exist. PHYTOPHTHORA ROOT ROT (Phytophthora spp.) Symptoms : Affected plants wilt and develop vine chlorosis and dieback as the root system is destroyed by the pathogen. Root disease can be expected to be more severe with root knot nematode parasitism on the same root system.

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Disease Control in Passion Fruit (Passiflora edulis) 2 Cultural Controls : Cultivar exhibit more vigor if grafted onto yellow passion vine root stock. Dead plants should not be immediately replaced without a 6 month 1 year follow-up period. Chemical Controls : No EPA-registered products exist.

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Disease Control in Passion Fruit (Passiflora edulis) 3 Table 1. Common Passion Fruit Diseases. Roots/Stems Leaves/Fruits Fusarium stem canker Anthracnose Phytophthora root rot Alternaria leaf spot Table 2. Chemical Controls for Anthracnose Fungicide and Percent Active Common Name Trade Name cupric hydroxide 23 cupric hydroxide 37.5 Kocide LF Kocide 4.5 LF, Champ Formula II Rate: 12 pts/A Rate: 4 pts/A cupric hydroxide 37.5 cupric hydroxide 53.8 Nu-Cop 3L Kocide 2000 Rate: 1 gal/A Rate: 4.5 lbs/A cupric hydroxide 61.4 Kocide DF Rate: 6 lbs/A cupric hydroxide 77 Kocide 101, Nu-Cop 50 DF Rate: 6 lbs/A Interval: Pre-flowering, continue weekly as needed.