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John Hartman



2011 Nursery and Landscape Research Report
8/30/2016 (new)

The UK Nursery and Landscape Program coordinates the efforts of faculty, staff, and students in several departments within the College of Agriculture tor the benefit of the Kentucky nursery and landscape industry. | PR-641
web only | 32 pages | 14,698 words | 29 downloads | PDF: 7,642 kb


Cherry Leaf Spot
3/1/2016 (new)

Cherry leaf spot occurs on both sweet and sour cherry; however, it is considerably more serious on sour cherries. Premature defoliation from cherry leaf spot reduces flower bud set for the next year, weakens trees, and increases sensitivity to winter injury. | PPFS-FR-T-6
web only | 1 pages | 311 words | 5 downloads | PDF: 500 kb


Black Spot of Rose
2/1/2016 (reviewed)

Black spot is the most common and serious disease of roses in Kentucky. It is a problem in greenhouse production and outdoor plantings. | PPFS-OR-W-10
web only | 1 pages | 344 words | 6 downloads | PDF: 350 kb


Gummosis and Perennial Canker of Stone Fruits
11/1/2015 (minor revision)

Gummosis is a general, nonspecific condition of stone fruits (peach, nectarine, plum and cherry) in which gum is exuded and deposited on the bark of trees. Gum is produced in response to any type of wound, regardless of whether it is due to insects, mechanical injury or disease. | PPFS-FR-T-8
web only | 2 pages | 559 words | 4 downloads | PDF: 207 kb


Twig Blights of Juniper
6/1/2014 (new)

Twig and branch dieback is a common sight in many juniper plantings in Kentucky. While other factors can cause these general symptoms, two fungal diseases are frequently responsible for the dieback. | PPFS-OR-W-11
web only | 2 pages | 720 words | 1 download | PDF: 600 kb


Strawberry Anthracnose
2/1/2012 (minor revision)

Anthracnose can be a serious problem in Southern and Midwestern strawberry plantings. The disease may appear as a fruit or crown rot, both of which severely reduce plant stands and yields. Fruit rot, the most common form of anthracnose, appears as fruit begins to ripen in late spring. Crown rots, on the other hand, can develop in young plants soon after planting or when weather warms in spring. | PPFS-FR-S-5
web only | 3 pages | 815 words | 1 download | PDF: 293 kb


2011 Fruit and Vegetable Research Report
12/20/2011 (new)

The 2011 Fruit and Vegetable crops research report includes results for more than 19 field research plots and several demonstration trials. Many of these reports include data on varietal performance as well as different production methods in an effort to provide growers with better tools, which they can use to improve fruit and vegetable production in Kentucky. | PR-626
web only | 53 pages | 26,604 words | 20 downloads | PDF: 1,391 kb


Diagnosing Plant Problems: Kentucky Master Gardener Manual Chapter 7
10/12/2011 (new)

To determine what factors have damaged a plant, you'll need to systematically and carefully observe the plant, its environment, and other plants in the area, then put all the pieces together to reconstruct the event(s) that produced the damage. You must make an accurate diagnosis before taking corrective action. Even if no corrective measures are available, it is good to know what the problem is and what its future development might be. | ID-194
web only | 32 pages | 14,578 words | 22 downloads | PDF: 1,200 kb


2010 Nursery and Landscape Research Report
1/28/2011 (new)

The UK Nursery and Landscape Program coordinates the efforts of faculty, staff, and students in several departments within the College of Agriculture tor the benefit of the Kentucky nursery and landscape industry. | PR-621
web only | 29 pages | 15,271 words | 18 downloads | PDF: 629 kb


2010 Fruit and Vegetable Research Report
12/20/2010 (new)

Fruit and vegetable production in Kentucky continues to grow. The 2010 Fruit and Vegetable crops research report includes results for more than 34 field research and demonstration trials that were conducted in 20 counties in Kentucky. | PR-608
1,000 printed copies | 70 pages | - | 30 downloads | PDF: 1,200 kb


Real-time PCR Detection of Xylella fastidiosa is Independent of Sample Storage Time and Temperature
11/1/2010 (new)

The xylem-limited bacterium Xylella fastidiosa, first associated with Pierce's disease of grapevines and alfalfa dwarf disease in 1973 (4) continues to be an economically important pathogen of several commercial crops. It also causes bacterial leaf scorch in urban shade trees such as sycamore, oaks, maples, mulberry, and elm (5). The usual course of action, in an effort to control the spread of this pathogen by insect vectors (9), is to prune out infected branches and vines or to rogue infected plants. Therefore, timely testing of suspect hosts is important. | PPFS-MISC-4
web only | 7 pages | 3,014 words | 1 download | PDF: 236 kb


Poinsettia Diseases
5/1/2010 (minor revision)

Poinsettias grown through the fall months for Christmas sales are vulnerable to destructive diseases from the time the cuttings are stuck into the rooting media until they are mature and ready for sale. A number of poinsettia diseases are favored by the same environmental conditions that promote propagation, making plant material at this stage particularly vulnerable. Diseases occurring in the later stages of production can be related to management issues or cultural problems, as well as the cooler temperatures needed for finishing. Some other diseases can be problematic to poinsettias at any phase of production. And finally, a phytoplasma organism found associated with poinsettias provides evidence that some host/pathogen relationships can actually be economically beneficial. | PPFS-GH-6
web only | 6 pages | 1,122 words | - | PDF: 1,335 kb


Nut Tree Growing in Kentucky
4/22/2010 (major revision)

Kentucky is generally well suited for growing nut trees. Northern pecans, black walnuts, heartnuts, hickory nuts, hardy Persian walnuts (Carpathian strain), American hazelnuts, and Chinese chestnuts all grow well in the state. Although most nut trees are grown by hobbyists and backyard gardeners, several varieties appear to have potential for commercial production, particularly some of the USDA pecan selections and some Chinese chestnut varieties. | ID-77
web only | 24 pages | - | 52 downloads | PDF: 680 kb


2009 Nursery and Landscape Research Report
1/7/2010 (new)

The 2009 report has been organized according to our primary areas of emphasis: production and economics, pest management, and plant evaluation. These areas reflect stated industry needs, expertise available at UK, and the nature of research projects around the world that generate information applicable to Kentucky. | PR-602
1,000 printed copies | 24 pages | - | 8 downloads | PDF: 1,258 kb


2009 Fruit and Vegetable Research Report
12/11/2009 (new)

The 2009 Fruit and Vegetable Crops Research Report includes results for more than 45 field research and demonstration trials that were conducted in 19 counties in Kentucky. Many of these reports include data on varietal performance as well as different production methods in an effort to provide growers with better tools that they can use to improve fruit and vegetable production in Kentucky. | PR-603
1,000 printed copies | 56 pages | - | 15 downloads | PDF: 850 kb


2008 Fruit and Vegetable Research Report
12/1/2008 (new)

| PR-572
1,100 printed copies | 72 pages | - | 14 downloads | PDF: 800 kb


2008 Nursery and Landscape Research Report
12/1/2008 (new)

| PR-571
1,100 printed copies | 30 pages | - | 6 downloads | PDF: 1,476 kb


Fruit Rots of Grape
10/1/2008 (new)

Kentucky's typically wet springs and warm, humid summers favor the development of several fruit rots of grape. These include anthracnose, bitter rot, black rot, Botrytis bunch rot, ripe rot, and sour rot. | PPFS-FR-S-14
web only | 7 pages | 2,467 words | 1 download | PDF: 358 kb


Downy Mildew of Grape
9/1/2008 (new)

Downy mildew is an important disease of commercial and backyard grapes in Kentucky. This disease causes direct losses when flowers, clusters, and shoots decay and yields are reduced. Indirect losses result when premature defoliation predisposes grapevines to winter injury. It may take a vineyard several years to fully recover after severe winter injury. | PPFS-FR-S-13
web only | 3 pages | 987 words | 2 downloads | PDF: 282 kb


Poor Fruit Set in Brambles
9/1/2008 (new)

Poor fruit set and sterility commonly occur on bramble fruits (red raspberries, black raspberries, and blackberries) both in commercial and home plantings. Typically the fruit fails to develop or small misshapen berries form. When an insufficient number of drupelets fully develop, they tend to separate so that the fruit "crumbles" when picked. This symptom, referred to as "crumbly berry," is another common result of poor fruit set. | PPFS-FR-S-9
web only | 4 pages | 1,393 words | 1 download | PDF: 234 kb


Phytophthora Root Rot of Brambles
7/1/2008 (new)

Brambles that are subjected to wet soil conditions or periods of flooding are often predisposed to Phytophthora root rot. Excess water not only promotes susceptibility of roots to this disease, but also aids the fungus in moving to new infection sites. Phytophthora root rot is primarily a disease of raspberries; however, it can also occur on blackberries. | PPFS-FR-S-7
web only | 2 pages | 655 words | 1 download | PDF: 296 kb


Strawberry Fruit Rots
6/1/2008 (new)

Strawberry fruit rot diseases often make it difficult to obtain high yields of quality berries. Kentucky's typically moist springtime growing conditions favor these diseases, which often begin with infections of flowers at bloom. Diseases causing the decay of developing and ripe strawberries include gray mold, leather rot, and anthracnose. | PPFS-FR-S-8
web only | 5 pages | 2,025 words | 2 downloads | PDF: 274 kb


Blueberry Diseases
1/1/2008 (new)

Kentucky blueberry growers sometimes experience plant and crop losses due to diseases. While most losses are due to root rot, or to stem and twig canker diseases, fruit rots and nutritional problems can also reduce yields. With good crop management, most blueberry diseases can be avoided. | PPFS-FR-S-10
web only | 4 pages | 1,107 words | 2 downloads | PDF: 292 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


2007 Fruit and Vegetable Research Report
11/29/2007 (new)

| PR-555
1,000 printed copies | 92 pages | - | 10 downloads | PDF: 1,400 kb


2007 Nursery and Landscape Research Report
11/26/2007 (new)

| PR-554
1,100 printed copies | 48 pages | - | 4 downloads | PDF: 1,400 kb


Bacterial Leaf Scorch
7/1/2007 (new)

Bacterial leaf scorch has devastated many landscape and shade trees in Kentucky's urban forests in recent years. Especially hard hit have been the mature pin oaks lining many urban streets. First diagnosed in the U.S. in the early 1980s, this epidemic shows no signs of abating. | PPFS-OR-W-12
web only | 6 pages | 1,885 words | 1 download | PDF: 249 kb


Peach Fruit Diseases
6/1/2007 (new)

Peaches are grown in many Kentucky orchards for local fresh market sales. Fruit diseases, often resulting in decayed peaches, are a serious problem, especially during warm, humid, rainy weather conditions. | PPFS-FR-T-9
web only | 5 pages | 1,737 words | 2 downloads | PDF: 277 kb


Grape Crown Gall
5/1/2007 (new)

Crown gall is a common, devastating grape disease that has been known to result in losses of entire vineyards in Kentucky. Besides grapes, over 600 types of plants are known to be susceptible to crown gall, including apples, stone fruits and brambles. | PPFS-FR-S-11
web only | 3 pages | 871 words | 3 downloads | PDF: 168 kb


Growing Peaches in Kentucky
3/30/2007 (minor revision)

| HO-57
1,500 printed copies | 20 pages | - | 73 downloads | PDF: 978 kb


2006 Fruit and Vegetable Research Report
12/15/2006 (new)

| PR-538
1,100 printed copies | 82 pages | - | 5 downloads | PDF: 1,337 kb


2006 Nursery and Landscape Report
12/15/2006 (new)

| PR-537
1,200 printed copies | 46 pages | - | - | PDF: 2,115 kb


Orange Rust of Brambles
9/1/2006 (new)

Orange rust is a disease caused by one of two very similar fungi, Gymnoconia nitens in the Southeast, and Arthuriomyces peckianus in the Midwest. Both fungi, causing the same symptoms, may be active in Kentucky. In Kentucky, orange rust is severe on some wild and cultivated thorny blackberries. It infects black and purple raspberries and thornless blackberries somewhat, but is not known to infect red raspberries. | PPFS-FR-S-6
web only | 2 pages | 657 words | 2 downloads | PDF: 232 kb


Slime Mold, Lichens, and Sooty Mold Problems on Plants
8/1/2006 (minor revision)

Slime molds are amoeba-like organisms which feed on bacteria and yeasts in the soil. During cloudy, humid weather these molds grow out of the soil and creep onto whatever is available. Turfgrass, weeds, strawberries, bedded flowers, and ground covers, as well as mulches, sidewalks and driveways may become covered with masses of gray, yellowish or black dusty spores. | PPFS-GEN-6
web only | 2 pages | 583 words | 1 download | PDF: 208 kb


2006 New Crop Opportunities Research Report
7/15/2006 (new)

| PR-533
web only | 72 pages | - | - | PDF: 1,359 kb


2005 Fruit and Vegetable Research Report
12/30/2005 (new)

| PR-521
1,100 printed copies | 98 pages | - | 4 downloads | PDF: 1,555 kb


2005 Nursery and Landscape Report
12/30/2005 (new)

| PR-520
1,200 printed copies | 46 pages | - | - | PDF: 5,168 kb


Phomopsis Cane and Leaf Spot and Eutypa Dieback Diseases of Grape
11/1/2005 (minor revision)

"Cane and leaf spot" and "Eutypa dieback" were once thought to be the same disease. However, it is now known that each is a distinct disease caused by a different fungus. Grapes grown in areas where a moist environment persists are especially vulnerable to these fungal diseases. | PPFS-FR-S-1
web only | 2 pages | 631 words | 1 download | PDF: 183 kb


Shoestring Root Rot: A Cause of Tree and Shrub Decline
5/1/2005 (minor revision)

Most woody landscape plants are susceptible to shoestring root rot, cause of dieback and decline in the landscape. Diagnosis of this problem requires close examination of the base of the trunk which often reveals loose or decayed bark and dead cambium. By peeling back the bark one can often observe dark brown rhizomorphs (thick strands of hyphae), resembling narrow "shoestrings." | PPFS-OR-W-5
web only | 2 pages | 415 words | 1 download | PDF: 337 kb


2004 Nursery and Landscape Report
12/20/2004 (new)

| PR-502
1,200 printed copies | 46 pages | - | - | PDF: 2,376 kb


2004 Fruit and Vegetable Report
12/15/2004 (new)

| PR-504
1,100 printed copies | 74 pages | - | 11 downloads | PDF: 1,899 kb


Apple Fruit Diseases Appearing at Harvest
8/1/2004 (minor revision)

Diseases of apple fruits appearing at harvest can cause significant losses in yield and quality. To know what control measures to take next year to prevent similar losses, it is important to recognize what is being observed. In some cases, growers will need to cut the fruit open to identify the problem. | PPFS-FR-T-2
web only | 2 pages | 613 words | 1 download | PDF: 306 kb


Powdery Mildew
8/1/2004 (minor revision)

Powdery mildew may affect numerous ornamentals, fruits, vegetables, and agronomic crops. In Kentucky, mildew diseases are most commonly observed on apple, begonia, crabapple, cherry, dogwood, lilac, phlox, pin oak, rose, sycamore, tuliptree, turfgrass, zinnia, squash, pumpkin, cantaloupe, wheat and barley. | PPFS-GEN-2
web only | 2 pages | 472 words | 2 downloads | PDF: 240 kb


Crown Gall
8/1/2004 (minor revision)

Crown gall can affect a wide range of crops, including woody ornamentals, tree fruits and small fruits. Some vegetable and herbaceous ornamentals are also susceptible but these crops are less commonly affected. | PPFS-GEN-1
web only | 2 pages | 593 words | 2 downloads | PDF: 210 kb


Oedema
8/1/2004 (minor revision)

Odema is a non-parasitic disorder which, under the right environmental conditions, can affect a wide variety of herbaceous plants. We most frequently observe this problem on indoor plants, such as dracaena, geranium and schefflera. Oedema tends to be more of a problem in greenhouses, but it may also occur on plants grown in homes and offices. Field and garden grown crops, such as cabbage, may also be affected. | PPFS-OR-H-5
web only | 1 pages | 318 words | - | PDF: 150 kb


Raspberry Fruit Rots
7/1/2004 (minor revision)

Rainy summer and fall weather in Kentucky can provide ideal conditions for fruit decay diseases of raspberries. The most damaging are the fungal diseases gray mold (Botrytis cinerea) and soft rot, or leak (Rhizopus and Mucor spp.). Both diseases are favored by long periods of wet fruit and foliage, and by high humidity levels. During some parts of the season, fruit rots account for up to 50% loss of potential harvest, and additional losses after harvest. | PPFS-FR-S-4
web only | 2 pages | 446 words | 2 downloads | PDF: 181 kb


Blackberry Rosette (Double Blossom)
7/1/2004 (minor revision)

Rosette disease, caused by the fungus Cercosporella rubi, is a serious and destructive disease of blackberries in most parts of Kentucky. In some locations, growers have been forced out of growing blackberries because of rosette disease. | PPFS-FR-S-3
web only | 2 pages | 516 words | 2 downloads | PDF: 208 kb


2003 Fruit and Vegetable Report
12/15/2003 (new)

| PR-488
1,100 printed copies | - | - | 1 download | HTML: 1 kb


2003 Nursery and Landscape Report
12/5/2003 (new)

| PR-486
1,200 printed copies | 42 pages | - | - | PDF: 474 kb


2002 Fruit and Vegetable Report
1/3/2003 (new)

| PR-470
1,000 printed copies | 65 pages | - | - | PDF: 2,400 kb


2002 Nursery and Landscape Report
1/3/2003 (new)

| PR-468
1,200 printed copies | 42 pages | - | - | PDF: 1,900 kb


2001 Fruit and Vegetable Report
1/4/2002 (new)

| PR-452
1,100 printed copies | 60 pages | - | - | PDF: 437 kb


2001 UK Nursery and Landscape Program
12/1/2001 (new)

| PR-450
web only | 40 pages | - | - | PDF: 369 kb


Total Quality Assurance Apple Production: Best Management Practices
5/1/2001 (new)

| ID-137
500 printed copies | 4 pages | - | 32 downloads | PDF: 271 kb


Principles of Home Landscape Fertilizing
3/1/2001 (minor revision)

| ID-72
4,000 printed copies | 6 pages | - | 53 downloads | PDF: 183 kb


2000 UK Nursery and Landscape Program
1/1/2001 (new)

| PR-437
1,800 printed copies | 38 pages | - | - | PDF: 574 kb


Fruit and Vegetable Crops Research Report 2000
12/3/2000 (new)

| PR-436
1,100 printed copies | 57 pages | - | - | PDF: 768 kb


Growing Grapes in Kentucky
4/30/2000 (reprinted)

Kentucky has a long record of good grape production. As a home fruit crop or commercial crop, grapes have many benefits. Grapevines are relatively inexpensive and easy to propagate. They reach full bearing potential in four years and bear annually. The many varieties of grapes can be consumed fresh or used to make grape juice, jams, jellies, and wine. Grapes are also easy to manage. Vines are trained on trellises or arbors and easily can be sprayed using small equipment for control of insects and diseases. | ID-126
3,000 printed copies | 24 pages | - | 70 downloads | PDF: 238 kb


Fruit and Vegetable Crop Research Report 1999
12/31/1999 (new)

| PR-423
750 printed copies | 43 pages | - | - | PDF: 712 kb


Nursery and Landscape Program: 1999 Research Report
12/31/1999 (new)

| PR-422
web only | 33 pages | - | - | PDF: 689 kb


The Flowering Crabapple
10/1/1999 (minor revision)

| ID-68
5,000 printed copies | 6 pages | - | 28 downloads | PDF: 331 kb


Fruit and Vegetable Program: 1998 Research Report
12/1/1998 (new)

The emphases in our research program reflect industry-defined needs, expertise available at UK, and the nature of research projects around the world generating information applicable to Kentucky. Although the purpose of this publication is to report research results, the report also highlights our Extension program and Undergraduate and Graduate degree programs that address the needs of the horticultural industries. | PR-410
web only | 46 pages | - | 2 downloads | PDF: 335 kb


Nursery and Landscape Program: 1998 Research Report
12/1/1998 (new)

| PR-409
web only | 44 pages | - | - | PDF: 318 kb


Topping Is Hazardous to Your Tree's Health
1/1/1996 (reprinted)

| ID-55
2,000 printed copies | 3 pages | - | 29 downloads | PDF: 200 kb


Transplanting Trees and Shrubs
11/1/1990 (reprinted)

| ID-80
10,000 printed copies | 8 pages | - | 47 downloads | PDF: 1,000 kb