PPFS-FR-T-2: Apple Fruit Diseases Appearing at Harvest

Nicole Gauthier | August 1, 2019 (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-S-15: Effectiveness of Fungicides for Management of Strawberry Diseases

Nicole Gauthier | August 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-FR-T-24: Bitter Rot of Apple

Kimberly Leonberger, Madison McCulloch, Nicole Gauthier | August 1, 2019 (New)

Bitter rot is the most common fruit rot of apple in Kentucky. Trees in both commercial and residential plantings can suffer devastating losses. Growers consider bitter rot the most important fruit rot and the second most destructive disease in Kentucky apple orchards. Yield losses can range from 10% to 100%.

PPFS-FR-T-25: Cultural Calendar for Commercial Apple Production

Ric Bessin, Kimberly Leonberger, Matthew Springer, John Strang, Nicole Gauthier, Shawn Wright | August 1, 2019 (New)

egrated pest management (IPM) includes the combination of biological, cultural, physical, and chemical tools in efforts to manage diseases and pests while minimizing risks associated with pesticides. Cultural practices are an integral part of an IPM program and should be incorporated into all commercial systems whether large or small, conventional or organic. This publication provides recommended practices at approximate growth stages and/or production periods. However, these timelines are approximate and may require adjustment for particular conditions. Growers who encounter situations that may not align with suggestions here should contact their county Extension office for assistance. Extension offices can also provide updated pest management recommendations. This cultural guide serves as a supplement to published spray guides and scouting guides.

PPFS-FR-S-23: Simplified Backyard Grape Spray Guide

Ric Bessin, John Strang, Nicole Gauthier, Patsy Wilson | July 1, 2019 (Minor Revision)

A simplified backyard grape spray guide (table).

PPFS-FR-S-26: Commercial Strawberry Fungicide Spray Schedule Worksheet and Sample Spray Guide

Nicole Gauthier | July 1, 2019 (Minor Revision)

A fungicide spray guide and worksheet for commercial strawberry growers.

PPFS-VG-10: Foliar Diseases of Cucurbits

Kenny Seebold | July 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-AG-C-9: Curvularia Leaf Spot

Nolan Anderson, Carl Bradley, Kelsey Mehl, Kiersten Wise | July 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 Gauthier | July 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 | July 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.