PPFS-GEN-12: Foliar Fungicide Use in Corn and Soybeans

Don Hershman, Cheryl Kaiser, Paul Vincelli | Oct. 1, 2011 (New)

Interest in the use of foliar fungicides for corn and soybean has expanded dramatically in the U.S. over the past few years, resulting in a major change in how these crops are being produced on many farms. Until recently, foliar fungicides for soybeans and corn were reserved for seed production fields to protect seed quality in very specific circumstances or for specialty crops. Applications for the purpose of protecting crop yield were rarely economical. However, the current trend in Kentucky, as well as many other corn/soybean producing states, is towards an increased use of foliar fungicides on these crops as a means of maximizing yields.

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ID-191: Climate Change: A Brief Summary for Kentucky Extension Agents

Tom Barnes, Ric Bessin, Jeffrey Bewley, Roy Burris, Tim Coolong, Lee Meyer, Joe Taraba, Paul Vincelli, George Wagner | Sep. 20, 2011 (New)

Nearly all climate science experts agree that global warming is occurring and that it is caused primarily by human activity. Regardless of what you may read on blogs or in the media, there is no meaningful scientific controversy on these points. The future impacts of global warming are difficult to predict, but the changes caused by greenhouse gases are expected to increasingly affect Kentucky agriculture.

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PR-621: 2010 Nursery and Landscape Research Report

Bernadette Amsden, Paul Bachi, Julie Beale, Steve Berberich, Ed Dixon, Win Dunwell, Bill Fountain, Amy Fulcher, Carey Grable, John Hartman, Dewayne Ingram, June Johnston, Katie Kittrell, Janet Lensing, Sara Long, John Obrycki, Dan Potter, Rebecca Schnelle, Ginny Travis, Paul Vincelli, Dwight Wolfe | Jan. 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.

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PPFS-MISC-4: Real-time PCR Detection of Xylella fastidiosa is Independent of Sample Storage Time and Temperature

Bernadette Amsden, John Hartman, Paul Vincelli | Nov. 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.

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PPFS-OR-T-1: Weather Favorable for Cottony Blight in Turfgrasses

Paul Vincelli | Aug. 1, 2009 (Minor Revision)

Hot, humid weather with occasional showers is favorable for cottony blight, caused by various Pythium species. This disease, also known as Pythium blight, can be very destructive in swards of creeping bentgrass and perennial ryegrass in a high-maintenance setting, such as golf courses, croquet courts, etc. Cottony blight can occasionally be found on other cool-season turfgrasses, though very infrequently.

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PPFS-AG-F-5: Crown Rots of Alfalfa

Paul Vincelli | May. 1, 2009 (Minor Revision)

Crown rots are chronic disease problems of alfalfa throughout the world. Crown rots cause loss of stand and forage yield in several ways. If the crowns are rotted severely enough, infected plants will die simply by being choked off. Carbohydrates for winter survival are stored in the crown and upper taproot. By rotting this area, crown rots also make alfalfa plants more sensitive to winter kill. Some crown rot fungi produce toxins, thus weakening or even killing the plant.

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PPFS-AG-F-3: Common Alfalfa Seedling Diseases and Disorders

Ray Smith, Paul Vincelli | Mar. 1, 2009 (Minor Revision)

Alfalfa seedlings are subject to a number of biotic and abiotic problems which can affect establishment. Several of the more common seedling diseases and disorders are described below. This information is being provided as a diagnostic aid; publications which provide specific management and production information can be found in the resource list.

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PPFS-AG-F-4: "Emergency" Inoculation for Poorly Inoculated Legumes

Garry Lacefield, Ray Smith, Paul Vincelli | Feb. 1, 2009 (Minor Revision)

Frequently, stunted and yellowed legumes are thought by growers to be diseased. Close examination often reveals that such "diseased" plants are actually just poorly nodulated.

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PR-572: 2008 Fruit and Vegetable Research Report

Doug Archbold, Tim Coolong, Tom Cottrell, Rick Durham, Vaden Fenton, John Hartman, Nathan Howard, Nathan Howell, Wuyang Hu, Dewayne Ingram, Terry Jones, Kaan Kurtural, Joe Masabni, Kenny Seebold, Bonnie Sigmon, Chris Smigell, John Snyder, Dave Spalding, John Strang, Paul Vincelli, Richard Warner, John Wilhoit, Mark Williams, Tim Woods | Dec. 1, 2008 (New)

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PPFS-AG-F-2: Risk Factors for Sclerotinia Crown and Stem Rot in Fall-Seeded Alfalfa

Paul Vincelli | Dec. 1, 2008 (Minor Revision)

Alfalfa seeded during late summer or fall is susceptible to the destructive disease Sclerotinia crown and stem rot. Fall-seeded stands are particularly vulnerable to this disease because the young seedlings have not had sufficient time to develop adequate resistance before infectious spores of the pathogen are produced in late October. In contrast, spring-seeded stands are able to develop larger, more resistant crowns prior to this infectious period. Thus, spring plantings are better able to withstand an attack, should these air-borne spores be present in the field.