University of Kentucky College of Agriculture

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College publications are given 2-part "pub numbers" that are used to identify them. The first part (the prefix) is a set of letters that indicates which series the document belongs to. A series is a grouping of documents that share similar content.

The second part of the pub number is just a sequential number.

Series: Vegetable Disease: Plant Pathology Factsheet

Sustainable Disease Management of Cole Crops in the Home Garden
1/1/2016 (new)

Cabbage, broccoli, cauliflower, kohlrabi, and brussel sprouts, all cole crops, are excellent plants to integrate into gardens. During wet seasons, bacterial diseases, fungal leaf spots, and downy mildew are common problems, while powdery mildew is more common during dry seasons. Bacterial diseases are also benefited by hot weather with occasional strong storms, which injure plants and spread pathogens in the garden. | PPFS-VG-23
web only | 2 pages | 822 words | 9 downloads | PDF: 788 kb

Sustainable Disease Management of Legume Vegetable Crops in the Home Garden
1/1/2016 (new)

Beans and peas, both legume crops, are excellent plants to integrate into gardens for multiple reasons. These plants are affected by few of the diseases that affect other popular garden plants. Beans and peas increase nitrogen fertility where they are planted, enriching the soil for the plants that are to follow them in a rotation. These plants can be extremely productive, and are a great source of dietary fiber and, in some cases, vegetable protein. | PPFS-VG-22
web only | 2 pages | 841 words | 8 downloads | PDF: 460 kb

Sustainable Disease Management of Solanaceous Crops in the Home Garden
1/1/2016 (new)

Solanaceous crops, including tomatoes, peppers, eggplants, and potatoes, may be the most popular garden plants, but many diseases commonly affect them. Early blight and Septoria leaf spot occur each year under even the best disease management, and bacterial spot may be spread easily under rainy conditions. A combination of approaches, such as using resistant varieties, record-keeping, cultural, and chemical management, is the best practice for minimizing vegetable garden diseases. | PPFS-VG-21
web only | 2 pages | 981 words | 7 downloads | PDF: 874 kb

Sustainable Disease Management of Leafy Green Crops in the Home Garden
12/1/2015 (new)

Leafy greens are great garden plants as a result of their short seasons, ease of growing, and ability to be succession planted. In wet summers, bacterial diseases, fungal leaf spots, and downy mildew are common problems, while powdery mildew is more common during dry summers. Bacterial diseases are also benefited by hot weather with occasional strong storms, which injure plants and spread pathogens in the garden. Lettuce drop, caused by the Sclerotinia fungus, can become a multi-year problem and may spread to different families of plants. | PPFS-VG-20
web only | 2 pages | 781 words | 3 downloads | PDF: 896 kb

Sustainable Disease Management of Cucurbit Crops in the Home Garden
12/1/2015 (new)

Cucurbit vining crops include cucumbers, watermelons, cantaloupe, pumpkins, zucchini, and summer and winter squashes, and can be highly productive plants in small gardens. During wet summers, downy mildew and fungal leaf spot diseases tend to occur, while in drier summers, powdery mildew is the most common disease. Gardens with cucumber beetle pressure are much more likely to have plants affected by bacterial wilt, since striped and spotted cucumber beetles can carry the bacterial wilt pathogen. | PPFS-VG-19
web only | 2 pages | 854 words | 5 downloads | PDF: 995 kb

Blackleg and Bacterial Soft Rot of Potato
10/1/2014 (new)

Blackleg and soft rot are bacterial diseases that cause heavy losses in Kentucky potato patches in some years. These diseases may result in missing hills when seed pieces are destroyed or the sprouts decay before they emerge from the ground. Serious rotting of tubers in potato hills and in storage can also occur. | PPFS-VG-18
web only | 2 pages | 754 words | 3 downloads | PDF: 707 kb

Bacterial Spot of Pepper and Tomato
9/1/2014 (new)

Bacterial spot can result in severe damage to tomato, sweet pepper, and pimento crops. The bacterium attacks leaves, fruits, and stems causing blemishes on these plant parts. Outbreaks of leaf spotting have resulted in leaf drop and poor fruit set in the field. Defoliation due to leaf spotting can increase the incidence of sun scald on fruit. Fruit infections result in badly spotted fruit, which are of little market value. In addition, fruit injury from this disease allows entry of secondary fruit rotting organisms, causing further damage. | PPFS-VG-17
web only | 3 pages | 786 words | 2 downloads | PDF: 636 kb

Bean Diseases
8/1/2014 (new)

Anthracnose can reduce bean quality, as well as yield. Losses can be severe during cool, rainy weather. It is caused by the fungus Colletotrichum lindemuthianum, which appears on all aboveground parts of the plant but rarely on roots. Lesions generally are dark brown and may contain pink spore masses during moist weather. Elongate, angular spots appear on lower leaf veins. As the fungus spreads into surrounding tissue, lesions eventually appear on the upper side of veins. Affected seeds become discolored. Plants grown from infected seed may develop lesions on the cotyledons. | PPFS-VG-16
web only | 6 pages | 2,129 words | 2 downloads | PDF: 1,154 kb

Tomato Wilt Problems
5/1/2014 (new)

Fusarium and Verticillium wilts are two fungal diseases that cause similar wilts in tomato. Fusarium wilt tends to be more common during warm weather, while Verticillium wilt is found more often when temperatures are cool. Both diseases share similar symptoms and can be hard to tell apart visually; laboratory tests are often needed for an accurate diagnosis. | PPFS-VG-15
web only | 4 pages | 1,510 words | 4 downloads | PDF: 2,070 kb

Bacterial Wilt of Cucurbits
4/1/2014 (new)

Bacterial wilt is a common, often destructive, disease of cucurbits. This disease can cause nearly complete losses of a planting before the first harvest. Bacterial wilt primarily affects cucumber and muskmelon (cantaloupe). While squash and pumpkin are also susceptible, the damage to these hosts is usually less severe. | PPFS-VG-11
web only | 3 pages | 1,044 words | 2 downloads | PDF: 575 kb

Bacterial Wilt of Cucurbits Quick Facts
4/1/2014 (new)

Highlights from the publication Bacterial Wilt of Cucurbits, PPFS-VG-11. | PPFS-VG-11-QF
web only | 2 pages | 300 words | 2 downloads | PDF: 786 kb

Yellow Vine Decline of Cucurbits
8/1/2011 (new)

Symptoms of yellow vine decline begin to appear approximately 2 weeks before fruit maturity. The disease may appear initially as stunting of plants and/or intense yellowing of foliage, followed by a slow decline in plant health. In some cases, a sudden collapse of vines may occur with no other symptoms. Vascular tissue (phloem) from crowns of affected plants is often discolored, appearing light brown rather than a healthy translucent green. | PPFS-VG-12
web only | 3 pages | 824 words | 1 download | PDF: 454 kb

Recognizing Late Blight on Tomato Seedlings
4/1/2011 (new)

Tomato seedlings that have late blight when transplanted can serve as sources of inoculum (spores) that can spread to nearby gardens and commercial plantings, so every measure should be taken to prevent these plants from making it to the field. The added threat is that sources of disease are introduced early in the tomato production season, magnifying the potential for heavy losses in seasons that favor late blight. | PPFS-VG-14
web only | 4 pages | 1,334 words | 1 download | PDF: 436 kb

Late Blight of Tomato
4/1/2011 (new)

Late blight is an extremely important and damaging disease of tomatoes and potatoes, and can be found nearly anywhere these crops are produced. Total crop failures are common with this disease. In the United States, significant losses occur each year--mainly in northeastern and north-central states. However, serious outbreaks have been reported in the southeastern U.S. as well. | PPFS-VG-13
web only | 4 pages | 1,416 words | 1 download | PDF: 565 kb

Gummy Stem Blight and Black Rot of Cucurbits
4/1/2011 (new)

Gummy stem blight is an important disease of cucurbits in many parts of Kentucky. Under conditions favorable to disease development, commercial growers and home gardeners may experience heavy losses. This disease can occur at any point in plant growth, from seedling stage to fruit in storage. Gummy stem blight is the name given to the disease when leaves and stems are infected. Muskmelon (cantaloupe), cucumber, and watermelon are most commonly affected by this phase of the disease. Black rot refers to the same disease on fruit; it is seen less often than the foliar phase. | PPFS-VG-8
web only | 3 pages | 820 words | 1 download | PDF: 584 kb

Phytophthora Blight of Cucurbits and Peppers
3/1/2011 (new)

Under ideal conditions, Phytophthora blight is an aggressive, fast moving disease that can cause extensive losses. This disease has become increasingly problematic on cucurbits and solanaceous crops in the United States. During the past decade, Phytophthora blight has been causing significant losses in several major vegetable production areas of the U.S. In Kentucky, serious outbreaks have been reported on summer squash, winter squash, cucumbers, watermelons, and peppers. | PPFS-VG-4
web only | 5 pages | 1,271 words | 2 downloads | PDF: 544 kb

Foliar Diseases of Cucurbits
11/1/2010 (new)

Vegetables in the cucurbit family include cucumber, gourds, muskmelon (cantaloupe), summer squash, winter squash, and pumpkin. The following diseases primarily affect the foliage of these crops and can result in losses in commercial fields and home gardens. | PPFS-VG-10
web only | 4 pages | 1,383 words | 2 downloads | PDF: 327 kb

Fruit Rots of Cucurbits
11/1/2010 (new)

Vegetables in the cucurbit family include cucumber, muskmelon (cantaloupe), summer squash, winter squash, and pumpkin. The following diseases primarily affect the fruit of these crops and can result in losses in commercial fields and home gardens. | PPFS-VG-7
web only | 5 pages | 1,411 words | 2 downloads | PDF: 315 kb

Bacterial Canker of Tomato
7/1/2008 (new)

Bacterial canker is a potentially serious disease of tomato that can occur in commercial plantings and home gardens. This infectious disease is capable of spreading rapidly, resulting in devastating losses. It is a particularly difficult disease to manage because not only is there no cure, but the pathogen can be hard to eradicate once it has been introduced into a greenhouse, garden, or field. | PPFS-VG-6
web only | 3 pages | 840 words | 1 download | PDF: 392 kb

Black Rot of Crucifers
2/1/2008 (minor revision)

Black rot, caused by the bacterial pathogen Xanthomonas campestris pv. campestris (Xcc), can be a very destructive disease of cabbage, cauliflower, and broccoli. Other susceptible crucifers include: collards, kale, Brussels sprouts, Chinese cabbage, kohlrabi, turnip, mustard, radish, and rutabaga. | PPFS-VG-1
web only | 3 pages | 792 words | 2 downloads | PDF: 227 kb

Southern Blight
1/1/2008 (minor revision)

Southern blight affects a wide variety of crops, but the disease most commonly occurs in Kentucky on ajuga, beans, cabbage, cucumbers, pepper, soybeans, and tomato. Other susceptible plants include apple, carrot, columbine, coreopsis, eggplant, lupine, muskmelon, peanut, pumpkin, peony, phlox, potato, radish, rhubarb, sweet woodruf, tarragon, tobacco, turnip, watermelon, and vinca. | PPFS-VG-3
web only | 2 pages | 591 words | 1 download | PDF: 242 kb

Blossom End Rot
1/1/2008 (minor revision)

Blossom end rot is a physiological disorder (non-parasitic disease) caused by a lack of calcium (Ca) in the distal ends of developing fruit. Calcium is an essential part of the chemical "glue" that binds cells together within the fruit. When fruits are enlarging rapidly, sufficient amounts of Ca fail to reach the end of the fruit and cells then come apart. This is because Ca is not a very mobile element, so any disruption in uptake of Ca can result in a deficiency of Ca in developing fruit. | PPFS-VG-2
web only | 2 pages | 518 words | 1 download | PDF: 165 kb