Numbered Publications: Plant Pathology
PPFS-VG-10: Foliar Diseases of Cucurbits
Kenny Seebold | Jul. 1, 2019 (Minor Revision)
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-FR-S-26: Commercial Strawberry Fungicide Spray Schedule Worksheet and Sample Spray Guide
Nicole Ward Gauthier | Jul. 1, 2019 (Minor Revision)
A fungicide spray guide and worksheet for commercial strawberry growers.
PPFS-AG-C-9: Curvularia Leaf Spot
Nolan Anderson, Carl Bradley, Kelsey Mehl, Kiersten Wise | Jul. 1, 2019 (New)
Curvularia leaf spot is a corn disease that was reported for the first time in the United States in Louisiana in 2017, and was confirmed in Kentucky in 2018. While the impact of Curvularia leaf spot in Kentucky is not yet known, this disease causes yield loss in tropical areas, and is considered to be one of the most important diseases of corn in China. This publication describes the symptoms and cause of disease, conditions that favor disease development, and foliar diseases that have similar symptoms.
PPFS-GEN-15: Considerations for Diagnosis of Ornamentals in the Landscape
Amy Aldenderfer, Adam Leonberger, Kimberly Leonberger, Nicole Ward Gauthier | Jul. 1, 2019 (Minor Revision)
Diagnosing plant problems can be challenging. A site visit can provide the information necessary for a complete and accurate diagnosis. However, once on-site, it is important to know how to proceed. The following guidelines are intended to assist in the process of gathering pertinent information and determining a possible cause. Often abiotic conditions such as environment, mechanical damage, or living organisms like insects or wildlife may be to blame. Should the field site diagnosis be inconclusive and samples need to be submitted to the UK Plant Diagnostic Laboratories, the information gathered here can provide valuable supplementary information.
PPFS-AG-T-5: Maintaining the Efficacy of Foliar Fungicides for Tobacco Disease Management
Bob Pearce, Emily Pfeufer | Jul. 1, 2019 (Minor Revision)
Management of resistance to fungicides is based on alternating the use of particular modes of action, or FRAC groups, which essentially presents multiple different challenges to the fungal population. Overall, fungi that are naturally resistant to a mode of action are very rare in the environment. Challenging a population with multiple different modes of action will reduce the chance of developing widespread resistance, which will prolong the efficacy of these chemicals.
PPFS-FR-T-18: Simplified Backyard Apple Spray Guides
Ric Bessin, John Strang, Nicole Ward Gauthier, Beth Wilson | Jul. 1, 2019 (Minor Revision)
Apple production requires pest and disease management programs for quality fruit. Home orchards are no different. Homeowners, however, are generally more tolerant of aesthetic maladies or minor crop losses than commercial orchardists. Thus, homeowners may choose to limit numbers of insecticide and fungicide sprays.
PPFS-FR-T-21: Backyard Apple and Pear Disease, Pest, and Cultural Practices Calendar
Ric Bessin, Kimberly Leonberger, John Strang, Nicole Ward Gauthier, Shawn Wright | Jul. 1, 2019 (Reviewed)
Backyard apple production requires a proactive approach to disease, insect, and weed management. Preventative practices are recommended to minimize inputs. While intensive culture may result in the highest quality fruit, reduced inputs can result in acceptable fruit with minor crop losses or aesthetic maladies. This guide focuses on preventative cultural practices with options of low-input pesticide applications. Refer to the homeowner fruit spray guide (ID-21) for a more complete pesticide spray schedule.
PPFS-FR-S-18: Effectiveness of Fungicides for Management of Grape Diseases
Nicole Ward Gauthier | Jul. 1, 2019 (Minor Revision)
This guide is a decision-making tool to help growers select fungicides from different chemical classes (FRAC). Additional information can be found in a number of UK Cooperative Extension Service publications, including ID-232, or by contacting county Extension agents.
PPFS-OR-T-2: Reducing the Risk of Resistance to Fungicides Used to Control Diseases of Turfgrasses
Paul Vincelli | Jul. 1, 2019 (Minor Revision)
Fungicides can be an important tactic in an overall integrated program for turf disease control. In order to insure that products available today remain available in the future, golf course superintendents should be aware of the need to use fungicides in ways that minimize the risk of fungicide resistance.
PPFS-VG-1: Black Rot of Crucifers
David Davis, Emily Pfeufer | Jul. 1, 2019 (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.
