Nursery Crops IPM Diagnostics Workshop - Trimble County - June 14th

Join us on June 14 at the Trimble County Extension Office for a workshop featuring topics on IPM Strategies, Nursery scale insects, recognizing diseases, and Boxwood Blight. After lunch (included) we will travel to Abrams Nursery for in-field training. See the attached registration form for more information. The cost is $20 per person if pre-registered, $25 for On-site registration.

If you have any questions, please contact:
Carey Grable, Extension Associate - Nursery Crops
(270) 365-7541 ext. 279

Certified Arborist 6.0 ISA CEU’s available

Pesticide CEUs 3 General & 2 Specific Hrs

Download file "IPM Workshop 2012.pdf"


Lean Makes Green - February 29 - Louisville

Join us on

February 29, 2012.

Lean is coming to Louisville.

Lyndon City Hall
515 Wood Road; Lyndon, KY

Ever tried mapping your business operations? Even the most efficient systems deserve continuous improvement. That’s a basic premise of Lean, a highly effective business operating system used to eliminate all forms of waste and maximize value to customers.

“Waste” exists in many forms but is basically described as any activity that costs time, space, or other resources but does not increase the value of the product. Put simply, waste adds costs that the customer does not pay.
Lean, however, offers tools that help businesses identify and eliminate waste in the forms of overproduction, transportation, processing, defects, inventory, waiting, and motion. Minimization of waste can create significant cost savings, greater productivity, reduced human effort, and fewer defects.
The tools offered through Lean apply to a broad range of fields such as administration, aerospace, construction, food processing, health care, journalism, and government. As Lean is introduced into the nursery industry, it applies not only to growers, but also to any business that uses multi-step processes to provide services or products.
On February 29, Elizabeth Peters, Oregon Association of Nurseries Lean Program Director and Editor of Digger Magazine, will conduct a one-day Lean workshop, titled LEAN makes Green, for business owners and managers of Kentucky’s nursery and landscape industries.


featuring Elizabeth Peters, Oregon Association of Nurseries Lean Program Director, and Jim Wallitsch, owner of Wallitsch Garden Center
8:00-8:30 Registration
8:30-9:30 An introduction to Lean and its impacts
9:30-10:30 Learning to see waste
10:30-10:45 Break
10:45-12:00 Tools for reducing waste
12:00-12:45 Lunch (provided)
12:45-1:15 Travel to Wallitsch Garden Center
1:15-2:00 Tour Wallitsch Garden Center
2:00-2:30 Discussion and Q & A
2:30-3:30 Where to go from here

Act quickly!

There is only a limited number of seats available for this workshop.
Feel free to call ahead to check availability.
Sarah Vanek, 859-257-1273
Registration forms postmarked after
February 17 might not be accepted.
$25 per person

Registration Form:
Download file "LeanRegistration 3p.pdf"


December 1st - IPM for Nurseries, Landscapes, and Garden Centers Program

On December 1st, the University of Kentucky Research and Education Center will be hosting a meeting for Nurseries, Landscapers, and Garden Centers focused on Integrated Pest Management. Topics for this meeting include: an Introduction to disease diagnosis, the Influence of Global Warming and Invasive Species on Plant Selection and Pest Management for Nurseries and Landscapes, The Role of Native Plants in the Battle between Good and Bad Bugs, A Beautiful Feast: Serving the Emerging Demand for Edibles in the Landscape, Protecting the Feast: Functional Design for Pest (and Client) Management in Edible Landscapes, and IPM Influence on Kentucky’s Water Quality. This meeting will offer Pesticide CEUs, 2 General & 1 Specific Hr. The cost of registration is $25.00 if postmarked, phone, or e-mail by Nov. 23, or $30.00 on the day of the program. The registration form can be found online here. For more information, contact: Christi Forsythe, 270.365.7541 x 221; e-mail, or Win Dunwell, 270.261.9467; e-mail,

UKREC Address:

1205 Hopkinsville St., Princeton, KY
December 1, 2011

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Lecanium Scale

NEARING TREATMENT for Lecanium scale crawlers if an infestation warrants. Lecanium scales have been found on Willow Oaks in the UKREC seed orchard. We have observed crawlers under the scales. So any warm day maybe this weekend they may start moving to the leaves. Dogwoods and oaks are the most frequently reported hosts. They excrete honeydew. Severe infestations may stunt plant development and cause premature leaf drop and small flowers. Sooty molds may also develop on the honeydew. CONTROL: Optimizing tree growing conditions is always best. Apply pesticide sprays only if necessary and only to the crawlers. The adult scales are less susceptible to pesticides. However, the crawlers found in June are unprotected. Crawlers observed on the leaves can be sprayed. Lee Townsend’s ENTFACT-430: the source for this text above and for a pesticide list.

Sarah Vanek, Extension Associate for Nursery Crops has done research on this pest and a call to her might be beneficial


Anthracnose Spotted

The conditions have been right and the disease has been spotted. UKREC Plant Pathology Diagnostician Paul Bachi has diagnosed Anthracnose on Dogwood, Sycamore, and Ash. Anthracnose is a fungal disease that overwinters in cankers on the tree as well as twigs and branches on the ground. Symptoms can vary between species, but control remains the same. Infected twigs and branches should be pruned out. In autumn, gather and destroy fallen leaves and twigs. Fungicides are not typically recommended but may be used on valuable specimen. These treatments are preventative sprays and must be applied at bud break, when leaves are half-expanded, and when leaves are fully expanded to prevent infection. For more information, see John Hartman's publication on Anthracnose Diseases of Shade Trees.


Periodical Cicada Emergence Has Begun!

Extension Entomologist Doug Johnson made this announcement on May 12th, 2011:

"Brood XIX, a thirteen year brood of the Periodical Cicada, has begun to emerge. During the morning of May 12, 2011 adult cicadas were reported from Caldwell and Muhlenberg Counties. This emergence will be largely a western Kentucky phenomena. Counties in the Pennyrile and Green River areas will have a high potential of seeing these incredible insects. They will also be seen in some counties of the Purchase Area. Other areas of Kentucky are unlikely to see any emergence."

The affected counties can be followed at Extension Entomologie's Cicada Watch 2011 page:

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Apple Fire Blight Alert!

Dr. John Hartman, University of Kentucky Plant Pathology Department, sent out this warning on 4/11:

"This morning, all Kentucky counties with apples in bloom are listed as having either a high or an extreme risk of Fire Blight infection. With rain predicted over most of the state today, infections will occur when rain water washes high populations of fire blight bacteria into the nectaries at the base of the open flowers. Growers with apples still in bloom will want to be sure to apply streptomycin well before it rains today.

Many Kentucky locations had rain on Saturday. Weather records from the Kentucky mesonet stations, indicated that all of those locations were at high or extreme risk of fire blight infections on Saturday as well. Hopefully, growers were able to maintain a good coverage of streptomycin on their trees leading up to Saturday as well."


Pear Fire Blight Alert

Dr. John Hartman has sent out this alert for pear growers about the current risk of Fire Blight:

Pears have been in bloom for more than a week in many parts of Kentucky. Fire blight primary infections occur through the open flowers. A Fire Blight prediction model called Cougarblight, developed at Washington State University, can be used to determine if weather conditions have been favorable for fire blight infection.

There was a potential fire blight infection event this past weekend in some regions of the state. Mesonet weather stations located in counties west of a line between Logan and Ohio Counties reported fire blightfavorable weather on the days leading up to April 4, when infection risks were high (but not severe). Infection risks were also high in a few eastern Kentucky counties (Lawrence, Johnson, and Breathitt). Fire blight risks during this same time period were marginal for the rest of the state.

Where pears are still in bloom, growers will want to continue with streptomycin sprays. If observed early enough, infected flower/fruit spurs can be broken out to reduce threats of secondary infections and spread to nearby apples which are in bloom or soon will be, depending on location.


Airblast Sprayer Workshop

The University of Tennessee Nursery Crops Program and Pro-Gro Nursery are hosting a Airblast Sprayer Workshop on Wednesday, May 4th in McMinnville, TN. The workshop will feature airblast sprayer experts Dr. Heping Zhu, USDA-ARS and Randy Zondag, OSU-Lake County Extension. Topics will include: airblast sprayer calibration, nozzle disc and whirl selections and positioning, canopy penetration and coverage, and how to achieve optimum spray droplet size and distribution specific to insect and disease control. Two pesticide points are offered in each of the following categories: C1, C2, C3, C10, and C12. Registration is required. $15 per person if received on or before April 30, lunch included. $25 if received May 1 or later, lunch not guaranteed. If you have any questions, contact: Mark Halcomb, Warren County Extension Office, 931-473-8484. Make out check
to: Warren County Extension. Mail checks and registration to: Warren Co. Extension, Attn: Nursery Workshop, 201 Locust St., Suite #10, McMinnville, TN 37110. Do not fax registration forms.


Small Fruit Pruning Demo

For those who have or are considering delving into small fruits and veggies for diversification, Extension Associate Vaden Fenton is hosting a Small Fruit Pruning Demonstration here at the UKREC in Princeton on Friday, March 4th.


Container Comparison Showing Results

Here at the Princeton UKREC Farm, we are currently conducting a product trial of the RootTrapper-in-pot Inserts made by the RootMaker company. These inserts are much like the standard RootTrapper bags and are designed to replace the liner pot in pot-in-pot production. Along with promoting root branching, these inserts are also designed to help control root escape and root circling.

On our farm, we have a 77 socket pot-in-pot setup, which is currently filled with Shumard Oak ( Quercus shumardii) planted in the RootTrapper-in-pot inserts and standard trade #15 plastic containers. These trees were potted in March of 2010 and are being grown to an approximate caliper of 2". The containers will then be compared for the amount of root escape and root circling.

Currently, these oaks are at an approximate average caliper of 1.4" and already we are seeing a comparison. As shown in the photo below root escape has already begun in the standard plastic containers. Roots approximately 6-8" long have begun to leave the liner container and grow into the socket pot. As many growers know, this can be a very costly problem
due to the amount of time and resources needed to repair the socket container. At this stage, these containers show promise for the control of root escape. The difference in the size and number of roots escaping can easily be compared as shown below. These containers will continue to be compared and evaluated for their ability to control root escape and circling as the trees approach a 2" caliper.

If anyone has any questions regarding our experiences with this product, please feel free to leave a comment here or contact us by phone: (270)-365-7541 ext. 279.


Dr. Win Dunwell Wins Porter Henegar Award

Dr. Win Dunwell has been presented with the Porter Henegar Memorial Award at the SNA Research Conference in Mobile. This award is presented to those who have made a significant contribution to ornamental horticulture research and to the Southern Nursery Association.

Left, Dr. Win Dunwell. Right, Dr. Gary Knox

Below are a few excerpts from the introduction given by Dr. Gary Knox.

"Dr. Win Dunwell, this year's winner, has a remarkable record of educational programming, for providing research and extension accomplishments that have always been closely tied to industry needs. This close empathy to nursery needs may have originated from working at nurseries part-time or full-time throughout high school, college and military years. In later years as a faculty member, Win's position responsibilities include developing educational programs related to sustainable ornamental plant introduction, propagation, production, and utilization. More to the point - - and something many of us can relate to - - Win is passionate about plants, especially new plants, to the extreme of being a self-proclaimed "plant geek". Accordingly, Win's longtime emphases in professional programming have been new crops development and marketing, including the use of award programs to promote plants and development of a small botanic garden and formal facilities for evaluating nursery crops.”

“One additional characteristic makes Win unique among his peers. While most of his colleagues shied away from learning new technology tools, Win bravely jumped in to learn and master emerging new information technologies - - - 15 years ago! As a result, Win now uses the Web as a primary means of Extension outreach, including the use of social media (Skype, Facebook, Twitter, Linked-in, etc.) as a means of disseminating information to his nursery clientele.”

“More important than the long list of accomplishments is the person and personality behind the position, for this year's winner, Dr. Dunwell, is widely known and loved for being friendly, helpful, dependable and unselfish with time for colleagues and industry contacts.”


Pesticide Training December 10th

Annette Heisdorffer, Ph.D., Davies County Extension Agent for Horticulture, is offering a commercial pesticide training workshop on December 10th. The meeting will take place at the Davies County Extension Office in Owensboro, Ky and will run from 8 am to 1 pm. Three general and one specific pesticide CEUs are expected. The Davies County Extension Office is located at:

Daviess County Office
4800A New Hartford Road
Owensboro, KY 42303
Phone: (270) 685-8480
Fax: (270) 685-3276


The Cicadas are Coming

Nursery growers in western Kentucky beware! The 13-year cicada is due to make its reappearance in 2011. As sap-feeders, nursery growers should keep an eye out for these pests in late April or early May. Cicadas have the potential the create weak points in stems, which can later break. This may not be threatening to a larger tree, but cicadas have the potential to deform smaller developing trees. If at all possible, growers should hold off on planting liners until after the cicadas begin to disappear in mid-June.
For a map of counties affected by these cicadas in 1998 and additional information on protecting your trees, visit the UK Department of Entomology's page on the 13-year Periodical Cicada Brood XIX - 2011.


Following the Rules

One of the most important rules in Integrated Pest Management is to destroy infected plant materials. Diseased plants serve as a source of inoculum for other plants to become infected. At the UKREC, we currently have a crop of Shummard Oak in our pot-in-pot as a part of a trial. Over the last month or so, we have noticed several diseases in this plot, including bacterial leaf scorch, leaf skeletizers, and leaf spot.

Upon inspecting the grounds here at the UKREC, we found that a row of thirty year old Red Oak several hundred feet away was the source of our disease problems. In this row, we found all of the same problems that are beginning to pop up in the pot-in-pot. The moral of this story is how important it is for Nursery growers to be vigilant in the destruction of infected plants. Even infected trees in surrounding woodlands can be problematic for a grower. This removal of infected plants can help save a grower a lot of time and money further down the road.


Nursery IPM Workshop Great

Amy Fulcher and Carey Grable hosted a IPM Workshop at the Trimble County Extension Office and Abrams Nursery. Topics covered diagnosis of pest problems and a discussion on weed control and herbicide damage in nursery production. If you missed it you can see the program at

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