PPFS-GH-1: Managing Greenhouse and High Tunnel Environments to Reduce Plant Diseases

Philip Konopka, Emily Pfeufer, Nicole Ward Gauthier | Mar. 1, 2016 (New)

Greenhouse and high tunnel environments, which tend to be warm and humid, often create ideal situations for disease development. Environments favoring infection and spread of many disease pathogens include one or more of the following: high relative humidity (90% or above), free moisture (e.g., leaf wetness, wet soil), and/or warm temperature. Because diseases can cause extensive damage, their management is essential to production of high quality, marketable products. While challenging, these environments can be managed to simultaneously encourage plant growth and discourage pathogen spread.

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PPFS-FR-T-3: Frogeye Leaf Spot, Black Rot, and Canker of Apple

Paul Andrew Rideout, Nicole Ward Gauthier | Feb. 1, 2016 (New)

Black rot and frogeye are common names of an apple disease that occurs in three phases: (1) leaf infections result in frogeye leaf spot, while (2) fruit rot and (3) branch infections are referred to as black rot. All three phases can cause significant damage in Kentucky home and commercial orchards.

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PPFS-OR-W-23: Shade Tree Anthracnose

Sharon Flynt, Nicole Ward Gauthier | Feb. 1, 2016 (New)

Anthracnose is the common name given to several fungal shade tree diseases with similar dark, irregularly-shaped leaf lesions. While they are primarily foliar diseases, damage on some hosts may extend to twigs, branches, and buds. In established trees, anthracnose usually does not cause permanent damage. However, resulting defoliation and dieback, especially if it occurs year after year, can weaken trees and make them more susceptible to environmental stresses and secondary pathogens.

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PPFS-FR-T-1: Peach Leaf Curl and Plum Pockets

Dennis Morgeson, Nicole Ward Gauthier | Dec. 1, 2015 (New)

Peach leaf curl occurs annually in commercial and residential orchards throughout Kentucky. The disease causes severe defoliation, weakens trees, and reduces fruit quality, fruit set, and yield. Peaches, apricots, and nectarines are susceptible to peach leaf curl. Plum pockets is a similar, but less common, disease that occurs on wild and cultivated plums.

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PPFS-FR-T-4: Black Knot

Dennis Morgeson, Nicole Ward Gauthier | Dec. 1, 2015 (New)

Black knot is a common, often serious, disease of plums and cherries in Kentucky. Ornamental Prunus species, as well as wild plums and cherries, may also be affected. Trees in both commercial and residential plantings are susceptible.

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PPFS-OR-W-4: "Wet Feet" of Ornamentals

Brad Lee, Tracey Parriman, Nicole Ward Gauthier | Nov. 1, 2015 (New)

"Wet feet" is the common term for a condition that affects plant species intolerant of wet growing conditions. This problem occurs when soils become saturated with water, which, in turn, displaces available oxygen. Roots require oxygen to function; when oxygen is deficient, roots suffocate. Once root damage occurs, plants decline and may eventually die. While "wet feet" is an abiotic disorder and is not caused by infectious organisms, declining root health and wet soil conditions can inhibit the ability of some plants to thrive. This also provides ideal conditions for many root and collar rot water mold pathogens, such as Phytophthora and Pythium.

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PR-691: 2015 Kentucky Silage Hybrid Performance Test

David Appelman, Rickey Arnett, Dan Grigson, Chad Lee, Jerry Little, Nick Roy | Oct. 29, 2015 (New)

Hybrids were evaluated for silage performance on cooperating farms. Representatives from seed companies submitted hybrids of their choosing. University of Kentucky personnel or third-party contractors planted the hybrid seeds. Farmers applied the soil fertility and pest management. University of Kentucky personnel harvested, weighed, chopped, and packaged corn for quality analysis. University personnel conducted the statistical analyses and final reporting of hybrid performance.

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PPFS-OR-W-1: Tree Wounds: Invitations to Wood Decay Fungi

Bill Fountain, Traci Missun, Nicole Ward Gauthier | Sep. 1, 2015 (New)

Wood decay leads to loss of tree vigor and vitality, resulting in decline, dieback, and structural failure. Wounds play an important part in this process since they are the primary point of entry for wood decay pathogens. While other factors may also result in decline and dieback, the presence of wounds and/or outward signs of pathogens provides confirmation that wood decay is an underlying problem. Wounds and wood decay reduce the ability of trees to support themselves.

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PPFS-FR-T-5: Apple Rust Diseases

Annette Meyer Heisdorffer, Nicole Ward Gauthier | Aug. 1, 2015 (New)

Cedar-apple rust is the most common and economically important rust disease occurring on apple in Kentucky. Two other rusts, cedar-hawthorn rust and cedar-quince rust, are of lesser importance on apple, but can significantly impact ornamental plants. All three diseases occur on crabapple, hawthorn, mountain ash, pear, and serviceberry.

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CLD3-4: Why Form a Coalition?

Kenna Knight | Jul. 28, 2015 (New)

A coalition is two or more organizations that work together to reach a common goal. Usually the goals of a coalition include one of the following: changing or creating public policy, changing or influencing individual behavior or building a healthier community.