University of Kentucky
 

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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: Small Grains Disease: Plant Pathology Factsheet



PPFS-AG-SG-8
Wheat Streak Mosaic Virus (WSMV) in Kentucky
6/1/2012 (minor revision)

 UK Authors: Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

Wheat streak mosaic (WSM) is a potentially devastating virus disease of wheat. In the United States, WSM is most prevalent in hard red wheat grown in the central Great Plains region. Soft red winter wheat produced in the mid-south and Midwest is infrequently impacted by WSM. Epidemics are rare in Kentucky with the only recorded ones occurring in 1989 and 2000.

web only | 4 pages | 1,453 words | 1 download | PDF: 282 kb



PPFS-AG-SG-7
Black "Sooty" Head Mold of Wheat
9/1/2011 (minor revision)

 UK Authors: Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

Each year, just prior to and during wheat harvest, the Plant Disease Diagnostic Laboratories at Princeton and Lexington receive many samples with questions about severe head molding. This condition is known as black head mold or sooty head mold.

web only | 2 pages | 405 words | 1 download | PDF: 264 kb



PPFS-AG-SG-5
Fungicide Use in Wheat
9/1/2011 (minor revision)

 UK Authors: Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

Disease management is a key component of high-yielding wheat production. In most years, it simply is not possible to produce high wheat yields without paying attention to disease control. Most diseases are best managed through the use of multiple tactics, both proactive (e.g., crop rotation, delayed and/or staggered planting plates, use of resistant varieties of varying maturities, proper fertility, and application of seed treatment and/or foliar fungicides) and reactive (e.g., application of foliar fungicides and timely harvest). Fungicides are just one tool in the disease management arsenal; however, growers often place too much emphasis on this one tool.

web only | 8 pages | 3,557 words | 3 downloads | PDF: 459 kb



PPFS-AG-SG-12
The Importance of Scouting Wheat for Plant Diseases
4/1/2011 (new)

 UK Authors: Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

For a variety of reasons, few Kentucky wheat producers place much emphasis on scouting their wheat diseases. Time and labor constraints (for do-it-yourselfers), the cost of hiring a crop consultant, and indifference to the need for scouting rank among the top reasons why this is the case. However, scouting is essential for those interested in managing diseases using an integrated approach.

web only | 2 pages | 519 words | - | PDF: 195 kb



PPFS-AG-SG-6
Preplant Decisions Greatly Impact Disease Potential in Wheat
4/1/2011 (minor revision)

 UK Authors: Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

Kentucky wheat producers have a majority of their disease management program in place once the seed is in the ground. By that time, decisions have been made regarding the length of time since the last wheat crop, tillage method and seedbed preparation, variety selection, seed quality, seed treatment, planting date, seeding rate, seeding method, and fall fertility. Individually and collectively, these decisions play an important role in determining which diseases might develop, their severity, and their potential impact on crop yield, test weight, and grain quality. Because pre-plant and planting decisions are so important in the management of wheat diseases, you need to understand how they influence disease development.

web only | 4 pages | 1,569 words | 1 download | PDF: 413 kb



PPFS-AG-SG-4
Wheat Spindle Streak Mosaic Virus (WSSMV)
2/1/2011 (minor revision)

 UK Authors: Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

Wheat spindle streak mosaic (WSSM), also known as wheat yellow mosaic, is a common virus disease that affects only wheat. In most years, WSSM has little to no impact on crops grown in Kentucky. However, significant yield damage can occur in highly susceptible varieties when conditions favor infection and subsequent disease development.

web only | 3 pages | 765 words | 1 download | PDF: 308 kb



PPFS-AG-SG-3
Barley Yellow Dwarf
1/1/2011 (minor revision)

 UK Authors: Don Hershman, Doug Johnson
 Departments: Entomology, Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: plant diseases

Barley yellow dwarf (BYD) is a virus disease that can cause serious yield loss when stunted and discolored plants are widely distributed in a field. Severe losses due to BYD occur state-wide about every five years or so, but individual fields are impacted to varying degrees each year. There are many diseases that can reduce wheat yields, but in the case of BYD, most of the disease management decisions (such as field selection, tillage practices, variety, and planting date) are made by the time the seed is actually sown in the fall.

web only | 5 pages | 1,959 words | 1 download | PDF: 602 kb



PPFS-AG-SG-2
Wheat Bacterial Streak
5/1/2010 (new)

 UK Authors: Paul Bachi, Don Hershman
 Departments: Plant Pathology
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

Occasionally, wheat leaves and spikes are invaded by the bacterium, Xanthomonas campestris pv. translucens. When leaf tissue is affected, the resulting disease is known as bacterial streak. When the bacterium invades the head, the disease is called black chaff. While this disease has primarily been a problem in the lower mid-South, it is often found in Kentucky in fields that have been impacted by strong winds with blowing soil or following a damaging freeze.

web only | 3 pages | 789 words | 1 download | PDF: 247 kb



PPFS-AG-SG-1
Take-All of Wheat
5/1/2010 (minor revision)

 UK Authors: Paul Bachi, Don Hershman
 Departments:
 Series: Small Grains Disease: Plant Pathology Factsheet (PPFS-AG-SG series)
 Tags: farm crops, grain crops, plant diseases,

"Take-all" is the common name of a root, crown, and basal stem (foot) rot that primarily affects wheat, but can also affect barley, oats, rye, as well as other grass crops and weeds. The disease has been known to destroy entire stands of wheat, thus the name. Barley, oats, rye, and other grass crops, however, have not been seriously impacted in Kentucky. Take-all is most common where susceptible crops are grown continuously without adequate rotation, or in fields where weedy grass hosts were not controlled in non-host crops, and were subsequently sown to wheat. The disease is rarely a serious problem in Kentucky due to excellent weed control practices, as well as the widespread adoption of cropping systems where wheat is produced, at most, every other year.

web only | 2 pages | 749 words | 1 download | PDF: 248 kb