Winter offers Emerald Ash Borer updates and new research information

Winter is the time for seminars and updates in the horticultural industry.  Updates on Emerald Ash Borers have revealed few changes. 

Treeage insecticide is providing a solid two years of efficacy in studies but begins to decline in the third year.  This may be sufficient in low insect pressure areas but is insufficient in areas with higher insect pressure.  Most of the Cincinnati metro area ranges from increasing to high/peak pressure right now with eastern areas more advanced and western areas less infested but with increasing activity.  Experience would tell us that western areas will be highly infested soon or may be already.  Northern Kentucky is also showing high insect pressure. 

Arbor Doctor offers a complete range of Emerald Ash Borer options.

Calendar for Common Kentucky Shade Tree and Woody Ornamental Pests

by Lee Townsend, Extension Entomologist
University of Kentucky College of Agriculture 

This calendar shows many of the common insects and mites that feed on shade trees and woody ornamentals in Kentucky. It should be helpful in anticipating pest activity or in identifying potential pests when trying to diagnose problems during the season.

Read more:

http://www.ca.uky.edu/entomology/entfacts/ef447.asp

USDA Continues Efforts to Eradicate Asian Longhorned Beetle in Ohio with Removal of Infested Trees

WASHINGTON, Jan. 6, 2012–The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) announced today it is resuming efforts to remove Asian longhorned beetle (ALB) infested trees in Bethel, Ohio. 

Infested tree removals stopped on Dec. 21, 2011 for the Christmas and New Year’s holidays, and resumed on Jan. 4, 2012. Within the phase one area, the Ohio ALB Cooperative Eradication Program is continuing to remove infested trees from landscaped areas and has begun removing infested trees from woodlots. As of Dec. 21, 2011, 1,146 infested trees have been removed. 

All impacted landowners will receive a legal notice letter from the Ohio Department of Agriculture (ODA) prior to the initiation of removal operations on their properties. Program officials will be on location daily with each contractor removal crew. The program will continue to work with landowners prior to removal operations taking place. Property owners are asked to communicate any concerns with Young’s General Contracting by calling (573) 785-1501 and/or APHIS by calling (513) 381-7180 in advance of tree removal work being conducted on their property. 

Removed trees are chipped to less than an inch in two dimensions, which allow them to become a deregulated article. ALB life stages are either eliminated or no longer supported through the chipping process. Chips are available for residents of Tate Township for their personal use. Residents can go to the marshalling yard, located at 2896 State Route 232 in Bethel, to pick up chips. The vehicle for transporting chips should be no larger than a light duty (GVWR) Class 3 truck or equivalent. Residents will need to provide proof of residency for Tate Township in order to receive the chips, such as a driver’s license, state identification card, voter registration card or utility bill. Residents must check-in at the tower with program officials and the removal contractor upon arrival. The hours of operation for the marshalling yard are 9:00 a.m. until 4:00 p.m. Monday through Friday, and it will be closed on holidays. 

Surveys by ground and aerial survey staff continue in and around the regulated areas within Clermont County to identify infested trees. Surveys are currently being conducted north of State Route 232 and east of Sugartree Road and Crane Schoolhouse Road in Bethel.

Surveying trees for signs of ALB is a continual process and takes place year round. Surveys are also being conducted on properties where infested trees are being removed while the ALB program staff is marking infested trees in advance of removal operations. 

As initial assessment surveys ended in July and delimiting surveys began, the number of known infested trees detected has increased. APHIS will issue a second Environmental Assessment (EA) to look at the possible positive or negative impacts that a proposed course of action may have on the environment. APHIS is examining the specific Ohio ALB infestation and impact of the various options; therefore the second EA is not expected to be available for public comment until the spring of 2012. Residents can learn more about the EA process by referencing a guide issued by The Council on Environmental Quality of the Executive Office of the President, entitled “A Citizen’s Guide to the National Environmental Policy Act: Having Your Voice Heard.” The guide can be found online at http://ceq.hss.doe.gov/nepa/Citizens_Guide_Dec07.pdf  

As of Dec. 28, 5,081 infested trees have been identified within Tate Township, and 27 infested trees in Monroe Township. An area-wide map reflecting current program information, including the initial removal area and infested trees identified, can be found online at http://www.aphis.usda.gov/plant_health/plant_pest_info/asian_lhb/alb_maps.shtml.

The Ohio ALB Cooperative Eradication Program is comprised of APHIS, Ohio Department of Agriculture, the Ohio Department of Natural Resources, The Ohio State University Extension, USDA’s Agricultural Research Service and Forest Service.

December and 2011 Weather Notes

December was exceedingly warm, wet, and snow less in Cincinnati this year.  Temperatures averaged nearly 7 degrees above normal.  No measurable snow fell all month with a trace recorded on only 3 days.   Temperatures did not even fall to freezing on 14 days during the month.  The rainfall of 6.38 inches was nearly twice normal.    December rainfall also pushed my annual total at Cheviot 0.9 SSE to 70.02.  This is by far and away a record for my location, but it pales in comparison with the 73.28 inches recorded at the CVG NWS office and the unofficial 76.24 inches recorded at a co-op station in Cheviot, OH.  The Cheviot co-op station is interesting for a couple of reasons.  This total is 6.22 inches greater than my total even though it is only a mile or so from me.      Also, if verified, it exceeds the old annual record for the entire state of Ohio (Little Mountain, Lake/Geauga County, 70.82 inches, 1870) by 5.40 inches. Even if this does not verify, the official NWS CVG total also exceeds the old annual state record.  It also obliterates the old official local record of 57.58 inches set in 1990.   The rainfall story in Cincinnati is nothing short of historic.  There is nothing to compare to this, historically, in the state of Ohio. Truly one for the record books!

More infomation can be found on this historic year here>>>

Pruning Landscape Trees and Shrubs

Edward F. Gilman and Robert J. Black

Pruning is the removal of plant parts, typically shoots, branches, fronds and flowers to improve health, control growth or influence fruiting, flowering or appearance. Roots can also be pruned and removed if they circle close to or are resting against the trunk. Pruning should be a routine part of home-ground maintenance and not delayed until the landscape is overgrown. Overgrown plants can be tall and leggy with little foliage close to the ground, and cannot be pruned to desired size in a single pruning without severely damaging the plants. These plants should be pruned back gradually over a period of several years.  Read more here>>>

Pruning mature shade trees fact sheet

Developing a Preventive Pruning Program: Young Trees

Photo examples of pruning

Click on any of the topics for many photo examples of pruning shade trees.  Click here to begin>>>

Practice pruning

Click through the photos to learn why trees were pruned in certain ways. See if you can determine what the tree needs before reading the paragraph at the bottom of each photograph.  Click here>>>

Writing Good Pruning Specifications

by Edward F. Gilman
Professor, Environmental Horticulture Department
University of Florida, Gainesville

If you are asked to bid on a pruning job and there are no pruning specifications other than vague inferences, how can you possibly know what the client wants done to the trees?  The answer is, you can not know.  The client probably does not know what they want either.

This is why specifications are so vital to the future of our industry, for without them, we can not move our profession ahead.  Read more here>>>