A few of the most common cucumber diseases include powdery mildew, bacterial wilt, cucumber beetles, cucumber mosaic, and downy mildew. Feeding by adult cucumber beetles can spread bacterial wilt disease among cucurbit plants, even when population density is low. Dealing with powdery mildew, fusarium wilt, aphids and other threats to your crop. One method of physically controlling pests is to remove and destroy the insects, the infested leaves or the part of the plant that is severely affected.
Cucumber beetles are spotted yellow beetles that cause stunted seedlings and damaged leaves, as well as plants exhibiting signs of bacterial wilt and will scar the okra. 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. Download pdf pests beneficials diseases and disorders in. Honeydew is a source of food for a black fungus known as sooty mold and for ants. Cucumber, cucumis sativus, is a warm season, vining, annual plant in the family cucurbitaceae grown for its edible cucumber fruit. How to spot cucumber beetles and bacterial wilt garden pests and diseases. A manual on the most important pests and diseases of the major food crops grown by smallholder farmers in africa. Insect scouting is needed to monitor insect populations and damage. It does not affect the pests or diseases of the cucumber.
Management strategies may include cultural practices as well as the use of insecticides. Pdf important insect pests of cucurbits and their management. The plant may have 4 or 5 main stems from which the tendrils branch. For the identification of insects and mites, contact a local virginia cooperative extension office, or find information about offices in your state. Please consider donating link and helping us, help smallholder farmers.
Cucumber diseases and pests, description, uses, propagation. Gummy stem blight is a stem and leaf disease of cucumber, cantaloupe, pumpkin and watermelon caused by the fungus didymella bryoniae. Please help improve this article by adding citations to reliable sources. The pepper is original from america, mexico, guatemala. Use mosaic disease resistance variety seed for sowing. Plantvillage is an open access public resource at penn state that aims to help smallholder farmers grow more food. Cucumber treatments, most common diseases and pests. Angular leaf spot is one of the most widespread diseases of cucumber. Time of occurrence, severity, and the yield losses resulting from these diseases vary with geographic region.
Disease management in the home vegetable garden diseases occur when environmental conditions are suitable for pathogens to develop on susceptible plants. Jan 27, 2020 gummy stem blight is a stem and leaf disease of cucumber, cantaloupe, pumpkin and watermelon caused by the fungus didymella bryoniae. How to spot cucumber beetles and bacterial wilt garden. Pests commonly found on cucumber department of entomology.
An ipm scouting guide for common problems of cucurbit crops in kentucky this manual is the result of efforts of the university of kentucky vegetable ipm team. Pests can wreak havoc on cucumber plants, reducing overall yield and possibly killing the plant itself. University of californias official guidelines for pest monitoring techniques, pesticides, and nonpesticide alternatives for managing pests in agriculture, floriculture. Some insect pests are specific to cucurbits, but most are pests of other crops as well. Signature symptoms 2000 also see the news article managing bacterial wilt affecting cucurbit crops june, 2001. Unfortunately, we cannot provide individual solutions to specific pest problems. Your gift will go 100% to plantvillage and is tax free in the usa. This article needs additional citations for verification. To prevent them, use floating row covers, apply kaolin common pests and diseases. If a stroll through your cuke patch reveals suddenly wilting branches with discolored leaves, some form of blight could well be the culprit. Yearround ipm program for cucurbits 911 seedlings cotyledons to 4 leaves vegetative growth. The cucumber plant is a sprawling vine with large leaves and curling tendrils.
Squash plants are are herbaceous annual plants which are either trailing vines or bushlike in morphology. This article will discuss the most common cucumber diseases, what causes them, and how to treat and prevent them. This disease often occurs in hot areas with frequent rainfall. Cucumbers cucumber seeds available at apply kaolin clay and if necessary, use an insecticide. The disease is caused by a bacterium, and the initial. Management strategies may include cultural practices as well as. Dec 16, 2016 a list of cucurbit pests and diseases. Squash is the collective name given to several species of plant in the genus cucurbita, including c. Your cucumber plant may be infected by bacterial, viral, andor fungal pathogens. Aug 16, 2019 bifenthrin, cyhalothrin, or cyfluthrin will control cucumber beetles, squash bugs, squash vine borers and pickleworms, but wait 3, 3, or 7 days, respectively, after spraying before harvest. Diseases of cucurbit vegetables department of primary. You can avoid these problems by choosing diseases resistant cucumber varieties. Cucumber treatments, most common diseases and pests of.
Click here to download a pdf version of this spotlight angular leaf spot, bacterial wilt, phytophthora crown and root rot, and powdery mildew are important diseases on cucumber. Insect management for cucurbits cucumber, squash, cantaloupe, and watermelon 2 mouthparts into the plants vascular system and sucking out the plant sap. For all other uses or more information, read legal notices. Diseases and insects in michigan cucurbits and their. An ipm scouting guide for common problems of cucurbit. A list of cucurbit pests and diseases farmers weekly. This mixture doesnt actually kill any pests, but it does encourage them to move elsewhere. How to identify and treat common cucumber diseases dengarden. Alternaria leaf blight creates yellowbrown spots with a halo which appears on older leaves first. Diseases that can affect cucumbers include alternaria leaf blight, anthracnose, belly rot, cucumber wilt and cucumber mosaic. These crops, are attacked by a variety of insects and related pests, including aphids, cucumber beetles, seedcorn maggot, squash bug, squash vine borer, and twospotted spider mite.
Often, the cucumber beetles alone will not kill the plants or cause major damage, but the spread of disease will. Gnld super gro is a fertiliser that can be used for cucumber crops. Knowing something about common cucumber pests can help you prevent those pests and deal with. None of the following pests need routine control measures, but they do need to be regularly monitored and treated when the pest becomes a problem. Adults are about 14 inch long with black heads, yellow thorax and yellow wing covers. Cucurbit pest management cucurbits watermelon, summer and winter squash, cucumber, pumpkin, cantaloupe, etc. Western spotted cucumber beetle and western striped cucumber beetle are the two most common to attack vine crops in the west. May be caused by cucumber mosaic virus cmv, squash mosaic virus sqmv, watermelon mosaic virus. Take a peek at the article below to learn how to keep your cucumbers happy, healthy and tasty. Sudden cold snaps can kill the plants as well, so protecting cucumber plants is. While the eastern shore is best known for watermelon and pickle production all cucurbits are grown throughout the state with.
Here is a brief overview of the main diseases and pests that can threaten pumpkins, squash, calabash, marrow, watermelons and cucumbers and other cucurbits. Bacterial wilt is a fatal disease spread by cucumber beetles and other beetles. Diseased plants may not produce as much fruit if any, and any fruit that is produced may not be palatable or edible. Angular leaf spot see cucurbits, angular leaf spot, 9.
Cultural control mosaic diseases are managed by using good quality seed and by controlling aphids and cucumber beetles throughout the season. If you treat the crop against a certain pest or disease, you can use the fertiliser as it will help the plant to recover, but it will not do anything against phytosanitary problems. In doing so, they excrete large amounts of sugary, sticky honeydew. Pests such as caterpillars, beetles, slugs and other large pests can be easily removed by hand when infestations are low. Insect pests can do damage wherever cucurbits are grown. Bifenthrin, cyhalothrin, or cyfluthrin will control cucumber beetles, squash bugs, squash vine borers and pickleworms, but wait 3, 3, or 7 days, respectively, after spraying before harvest. Angular leaf spot, bacterial wilt, phytophthora crown and root rot, and powdery mildew are important diseases on cucumber.
Field identification guide the field identification guide is designed to assist producers, workers, students and consultants to correctly identify pests, diseases, disorders and beneficials of greenhouse vegetable crops in australia. Potato diseases are caused by fungi, bacteria, viruses, mycoplasmas, a viroid, nematode m festations, and by abiotic, or noninfectious, entities. To keep ahead of cucumber problems, pests and diseases, here is a troubleshooting list of possible cucumber problems with brief control suggestions. Pepper treatments, most common diseases and pests of. If youhave to buy plants,insist that theybe free from these pests. Jun 29, 2012 how to spot cucumber beetles and bacterial wilt garden pests and diseases. Pepper treatments, most common diseases and pests of this vegetable the pepper capsicum annuum is a plant that occupies an important place amongthe worldwide vegetable crops.
Refreshingly crisp and juicy when the weather is hot and steamy, they are a light, replenishing snack right off the vine. Cucumber beetle damage can occur on the watermelon fruit. Depending on the cucumber variety you plant, you may rarely have problems with other cucumber diseases. Squash bug adults and nymphs feed on leaves and fruit by sucking on plant juices. Sudden cold snaps can kill the plants as well, so protecting cucumber plants is of paramount importance. Symptoms include leaves with brown or tan spots of various sizes that may eventually cover the entire leaf. Adult cucumber beetles overwinter in weeds, garden debris, and woody areas. Fortunately, lots of these diseases can be treated. Funding for this publication is from the university of kentucky pest management program. Diseasesandinsectsareoften introduced into gardens and fields on transplants. You can remove any weeds from near your garden that might harbor the.
Insects such as leafhopper and psyllids cause injuries to the potato that are often confused with diseases caused by infectious organisms. Aphids, cucumber beetles, whiteflies, and thrips are some of the important insect pests of cucumber. Major insect pests include cucumber beetles, red pumpki n beetles, fruit ies, hadda beetles, squash bugs, aphids, white ies. Also, some pathogens can attack all plant parts, while other attack only selected plant parts.
Alternaria leaf blight creates yellowbrown spots with a halo which appears. Squash diseases and pests, description, uses, propagation. The viruses are transported mainly by infected seed or insects such as aphids or cucumber beetles. Unfortunately, there are plenty of insect pests that might get to the cucumbers before you do or transmit diseases, rendering plants unable to produce. Some pathogens attack a wide variety of plants and others attack only specific plants. For noncommercial purposes only, any web site may link directly to this page. This primefact covers common cucurbit diseases caused by fungi, bacteria and viruses. Cucumber beetles, squash bugs, squash vine borers and other pests can attack cucumbers. Do not plant cucurbits near woods, brushy areas, or other areas that are weedy.
Muskmelons, watermelons, cucumber, squash, gourds, and pumpkins are cucurbits commonly grown in indiana. Dwarfing and narrowing of leaves in the pepper bush produced by the pathogen called cucumber mosaic virus in pepper. Fact sheets and information bulletins cucurbits cucumber, melon, pumpkin, squash, watermelon. It is very important to know the diseases and pests that attack this plant, and to apply the necessary plant protection products correctly and efficiently. Insect management for cucurbits cucumber, squash, cantaloupe. Tomato disease and insect control manual with variety selection anthony carver extension agent grainger county 3 disease identification pictures taken from cornell university, rutgers university, a. This fungus also causes a fruit rot called black rot. There are other less common diseases affecting cucurbits which are not covered here. Pests, diseases, disorders and beneficials in greenhouse vegetables. Uk vegetable ipm team kenny seebold, extension plant pathologist. Squash is the collective name given to several species of plant in the genus cucurbita.