Compendium of cucurbit diseases and pests, second edition by. Other cucurbit diseases angular leaf spot on cucumber powdery mildew on acorn squash. This article is a list of diseases of cucurbits citrullus spp. The key component of the project vg07015 pests, beneficials, disorders and diseases in cucurbits. The cucumber plant is a sprawling vine with large leaves and curling tendrils. Integrated pest management in cucurbit crops in southcentral. Epidemics of cmv and other cucurbit viruses, which are spread by aphids in a nonpersistent manner, depend on the abundance of virusreservoir weed, wild, and crop host plants, the abundance of insect vectors, and the closene ss of virusinfected source plants to cucurbit plants in fields and g ardens. M download it once and read it on your kindle device, pc, phones or tablets.
This is a fungus that attacks the leaves leaving a white dusty powder on the leaf surface. Cucurbit vegetables list and care backyard garden lover. Vegetables in the cucurbit family include cucumber, gourds, muskmelon cantaloupe, summer squash, winter squash, and pumpkin. Although descriptions of the more common diseases have been given to assist with identification, it can be difficult to diagnose some diseases with similar symptoms. Use of antibio ticproducing soil fungi and bacter ia, that is, gliocla dium sp p. At least three common cucurbit leaf beetles attack pumpkins in south africa. Cucurbit crops types of cucurbits and growing information. The pest complex for the cucurbit crops could be divided into four major categories. The major pests of cucurbit crops in south central usa were identified by researchers and extension specialists in the planning grant proposal by category in table 1. The wilting symptoms spread up and down the runner sometimes as a recurring wilt on hot, dry days.
Managing multiple diseases affecting cucurbit crops. Cucurbit downy mildew nc state extension publications. This article originally appeared in the 82004 issue. Sustainable disease control in cucurbits by rosemary gordon april 29, 2015 for growers of cucurbit crops, keeping diseases such as downy mildew and phytophthora out of your fields can be particularly challenging, whether you are an organic or conventional producer. Proper watering and feeding programs help to keep plants healthy and diseases at bay. Cucumber and cantaloupe are most susceptible, followed by squash, pumpkin and gourd. Morrison iii2, benjamin werling3, nicole quinn 2, zsofia szendrei and amanda buchanan2 extension bulletin e3276 diseases cucurbit crops are an important component of the pro. Fact sheets and information bulletins cucurbits cucumber, melon, pumpkin, squash, watermelon. Isolates belonging to clade 1 tend to more frequently infect watermelon, pumpkin, and squash while. Cucurbit powdery mildew causes white, powdery fungal growth on leaves figure 1, figure 2, stems, and petioles. High level resistance to all the four diseases was not recorded in any of the collections tested.
All fungicides labeled for the control of cucurbit diseases are listed in table 1, and are arranged by the fungicide group numbers assigned by the fungicide resistance action committee frac. International in scope and practical in emphasis, the compendium of cucurbit diseases is designed to assist in the diagnosis of cucurbit diseases, whether in the field, the greenhouse, the laboratory, or the diagnostic clinic. Details on carrying out each practice, example monitoring forms, and information on additional pests can be found in the cucurbit pest management guidelines pmg. Cucumber, cucumis sativus, is a warm season, vining, annual plant in the family cucurbitaceae grown for its edible cucumber fruit. Paul, mn june 2017in the 20 years since aps press published the first edition of compendium of cucurbit diseases, worldwide production of watermelon, cucumber, melon, and squash has roughly doubled. The keys for the successful control of cucurbit diseases are. International projects on cucurbit diseases cucurbits are important economic crops in many parts of the world. Fungicides that are protectant in nature page 1 have been assigned to group m for multisite activity or have other means of activity. Wherever your cucurbits are grown, the new compendium of cucurbit diseases and pests, second edition provides the latest pest. Erwinia tracheiphila symptoms symptoms of the disease first appear on a single leaf which suddenly wilts and becomes dull green.
Diseases of cucurbits types of cucurbits those grown in il production facts etc. The already extensive list of more than 200 cucurbit diseases has expanded recently to include cucurbit yellow vine disease, acremonium collapse, rhizopycnis root rot, bacterial blight, cucumber root mat, cucurbit yellow stunting disorder virus, cucurbit. In the last 25 years, there have been changes in cultural methods which include introduction of hybrid cultivars, transplanting, plastic mulch, drip irrigation, and. In the 20 years since aps press published the first edition of compendium of cucurbit diseases, worldwide production of watermelon, cucumber, melon, and squash has roughly doubled. The department of plant pathology the ohio state universityoardc 1680 madison ave. Foliar diseases of cucurbits plant pathology university of kentucky. This guide provides descriptions and pictures of the more commonly found diseases and disorders of cucurbits worldwide. Diseases and insects in michigan cucurbits and their. Statewide surveys and laboratory and greenhouse tests conducted during 20042006 showed that watermelon mosaic virus wmv was the most prevalent virus in commercial gourd, pumpkin, and squash fields in illinois. The following diseases primarily affect the foliage of these crops and can result in losses in commercial fields and home gardens. Multiple disease resistance in cucurbits pdf melon germplasm was screened for cucumber green mottle mosaic virus cgmmv, powdery mildew. Diagnose and treat cucurbit diseases, pest damage, and disorders.
Alternaria leaf blight alternaria leaf blight is found primarily. The plant may have 4 or 5 main stems from which the tendrils branch. This disease is caused by the funguslike pathogen pseudoperonospora cubensis. In the last 25 years, there have been changes in cultural methods which include introduction of hybrid cultivars, transplanting, plastic mulch, drip irrigation, and increased plant density without adequate rotation. There are other less common diseases affecting cucurbits which are not covered here. Symptoms of the disease on young plants can include wilting of the entire plant and rapid death photo 2. Anthracnose of cucurbits horticulture and home pest news. The compendium of cucurbit diseases and pests, second edition remains international in scope and practical in its emphasis. As the pathogen continues to colonize the plant, the leaves senesce early and fruit yield and quality can be affected.
Angular leaf spot is a bacterial disease caused by pseudomonas syringae pv. More information on cucurbit diseases can be found in pm 1049, curcurbit diseases an aid to identification and control pdf. Pdf important diseases of cucurbitaceous crops and their. Product detail compendium of cucurbit diseases and pests. Affected leaves display a range of unusual symptoms including mosaic patterns in different shades of green and fingerlike distortion of leaf shape.
It will be valuable tool for a wide range of readers in both the cucurbit industry. Zitter provide the latest diagnostic and management information. They are all black and orange and damage flowers and leaves. Fungus and bacteria can cause wilts, rots and blights. Sustainable disease management of cucurbit crops in the. In particular, phytophthora capsici has increased dramatically in the past five years and is causing severe crop losses and infecting more and more. Other cucurbit crops affected by downy mildew and old infected. Diseases of cucurbit vegetables nsw department of primary. Compendium of cucurbit diseases and pests, second edition. A list of cucurbit pests and diseases farmers weekly. Although descriptions of the more common diseases have been given to.
Use features like bookmarks, note taking and highlighting while reading compendium of cucurbit diseases and pests. Infection usually begins on older or shaded leaves of cucurbits. Phytophthora blight affects all com mercially available cucurbit cultivars. Pests, beneficials, disorders and diseases in cucurbits. While cucurbits are relatively trouble free, powdery mildew seems to be quite common.
Information on cucurbit varieties and susceptibility to wilt and other diseases can be found on the cornell vegetable md online website mcgrath 2001. Leaf and fruit diseases of cucurbits ii ct integrated pest. Cucurbit beetles must be controlled when they are first noticed in the spring. The bacterial wilt pathogen is transmitted by the striped and spotted cucumber beetles. Managing diseases is a very important component of production for melons, cucumbers, squashes, pumpkins, and other cucurbit crops. Page 1 diseases and insects in michigan cucurbits and their management by charles krasnow 1,mary hausbeck, alexandria bryant2, william r. Cucurbit downy mildew is caused by the funguslike oomycete pathogen pseudoperonospora cubensis p.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. This yearround ipm program covers the major pests of cucurbits in the sacramento, san joaquin, coachella, palos verde and imperial valleys, as well as riverside county. Cucurbit diseases and their management cornell university. Cucurbit diseases fact sheet list cornell university. If the disease is severe enough to warrant the use of fungicides, several are available for home garden use table 2. While in the same fungicide chemical group, there is. Cucurbit insect management and aphid outbreaks rick weinzierl university of illinois illiana vegetable growers, january, 2016. Wherever your cucurbits are grown, the compendium of cucurbit diseases and pests, second edition provides the latest pest management and diagnostic information to suppress diseases of all cultivated cucurbits plus. During wet summers, downy mildew and fungal leaf spot diseases tend to occur, while in drier summers, powdery mildew is the most common disease. Increasing the amount of chlorothalonil applied is prudent for these diseases. Yearround ipm program for cucurbits 911 seedlings cotyledons to 4 leaves vegetative growth.
Lecture 12 diseases of cucurbits 2 lectures cucumber and squash vascular wilt. A wide range of cucurbit diseases can affect these plants at different growth stages. Sustainable disease control in cucurbits growing produce. The already extensive list of more than 200 cucurbit diseases has expanded recently to include cucurbit yellow vine disease, acremonium collapse, rhizopycnis root rot, bacterial blight, cucumber root mat, cucurbit yellow stunting disorder virus. Field identification guide is the publication of a practical field guide which will assist cucurbit growers with the identification of insects, diseases and disorders in their cucurbit crop. Plant pathology fact sheet ppfsvg10 foliar diseases of. Cucurbit crops comprise almost 30% of all vegetable crop acreage in new england, and are grown on over 4,000 acres in massachusetts. The fruit rot phase of this disease can be especially challenging to manage due to direct. Signature symptoms 2000 also see the news article managing bacterial wilt affecting cucurbit crops june, 2001. This primefact covers common cucurbit diseases caused by fungi, bacteria and viruses. Virus diseases of cucurbits several viruses can infect cucurbit crops.
Rotate away from cucurbits melons, squash and cucumber for 2 3 years, if possible. Dec 16, 2011 diseases of cucurbits types of cucurbits those grown in il production facts etc. We gratefully acknowledge the cooperation of allen stevens, elizabeth bernhardt, jeff dodson, and jon watterson, seminis vegetable seeds, inc. Disease control in cucurbits vegetable diseases cornell. Gavel 2ee approval means new york growers have another fungicide for managing phytophthora blight in most cucurbit crops june 2004 also see. Cucurbits are warm weather crops which are sown, grown and harvested over spring, summer and autumn. This disease is caused by the fungus, fusarium oxysporum forma specialis melonis.
There has been a longstanding need for a comprehensive, authoritative, and uptodate account of cucurbit diseases. In the new second edition of compendium of cucurbit diseases and pests, editors t. Wherever cucurbits are grown diseases can cause damage. Cucumber diseases and pests, description, uses, propagation. The number, severity and complexity of diseases attacking these vital crops have increased in the past decade. Cucurbit vining crops include cucumbers, watermelons, cantaloupe, pumpkins, zucchini, and summer and winter squashes, and can be highly productive plants in small gardens.
The wilting symptoms spread up and down the runner sometimes as. University of californias official guidelines for pest monitoring techniques, pesticides, and nonpesticide alternatives for managing pests in agriculture, floriculture. Daily scouting is essential during the emergence and early life of the crop while the plants are. Photographs and details of the cause, symptoms, source of infection, favourable conditions and control of the disease are outlined in the primefact. This disease was first reported in italy in 1893 and has been reported in the u. Compendium of cucurbit diseases disease compendium series. This is the approved common names for diseases of cucurbits which is published by the american phytopathologcal society.
The most critical infection period is from seedling emergence to the time when canopies start to close. Alternaria leaf spot is caused by the fungus alternaria cucumerina. Can be confused with the bacterial disease angular leaf spot. Cucurbit powdery mildew nc state extension publications. Diseases of cucurbits and their management springerlink. This disease occurs on all continents on cucumber, gherkin, muskmelon, pumpkin, squash, vegetable marrow, and watermelon. Diseases of cucurbit vegetables department of primary. Cucurbit downy mildew spreads rapidly and can cause extensive yield loss. Affected leaves display a range of unusual symptoms including mosaic patterns in different shades. Leaf and fruit diseases of cucurbits i ct integrated pest. Cucurbit downy mildew is an important foliar disease that affects all types of cucurbits. Airborne and rainsplashed conidia serve as secondary inoculum, spreading disease within a field. Its important to first diagnose the disease before attempting treatment.
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