13Jun07 - University of Maryland Extension

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chew their way out to freedom. This chewing results in a circular hole. So when you are monitoring your plants and find scales, be sure to look at the scale covers for circular holes which indicate parasitoids are active in your scale population. If you see natural enemy activity, which we commonly find, take this into account when you are selecting which pesticides to apply for scale suppression. Select products that have less detrimental impact on scales like oils or insect growth regulators. Note the discrete circular hole in the Japanese maple scale covers. These holes indicate parasitic wasps have attacked and killed the scale. Photo: P. Shrewsbury, UMD Note the discrete circular hole in the Obscure scale covers. These holes indicate parasitic wasps have attacked and killed the scale. Photo: J. Davidson, UMD Degree Days (As of June 6) Baltimore, MD (BWI) 773 College Park 974 Dulles Airport 814 Frostburg, MD 455 Martinsburg, WV 735 National Arboretum 974 Reagan National 974 Salisbury 931 To check degree day (DD) accumulations in your local area go to: http://www.weather.com/outdoors/agriculture/growing-degree-days/USMD0100 Note: degree days reported in this newsletter for various pests use the Weather.com web site, a base temperature of 50 °F, a start date of January 1st, and the date of monitoring as the end date. Plant Phenology: What is in bloom PLANT PLANT STAGE (Bud with color, LOCATION First bloom, Full bloom, First leaf) Asclepias tuberosa Bud Ellicott City (June 7) Coreopsis verticillata ‘Moonbeam’ First bloom Ellicott City (June 7) Penstemon ‘Husker Red’ Full bloom Ellicott City (June 3) Salvia officinialis ‘Berggarten’ First bloom Ellicott City (June 3) MDA Pesticide Container Recycling Program MDA is once again conducting a pesticide recycling program. For a list of dates and locations of collection sites, go to http://mda.maryland.gov/plants-pests/Documents/recycle.pdf 8
Upcoming Programs Eastern Shore Pest Management Conference Friday, June 14, 2013 Location: Wye Research and Education Center, Queenstown, MD For more information: Ginny Rosenkranz, 410-749-6141, ext 106 MNLA Nursery Field Day June 20, 2013 Location: Waverly Farm, Adamstown, MD Contact: MNLA, 410-823-8684 Nutrient Management Plan Writing – Nursery and Greenhouse Production July 10, 2013, 9 a.m. to 3:30 p.m. Location: CMREC, 11975 Homewood Road, Ellicott City, MD 21042 Contact: Andrew Ristvey, aristvey@umd.edu, 410-827-8056 x113 The Maryland Christmas Tree Association (MCTA) Summer Christmas Tree Meeting June 22, 2013 Location: Jarrettsville Nurseries, 1121 Holy Cross Road, Street, Md 21154. Topics include: irrigation practices, field preparation, field tours, advanced shearing, fertilizer programs, pesticide and IPM. Agenda and registration: gavertreefarm@aol.com. CONTRIBUTORS: Stanton Gill Extension Specialist sgill@umd.edu Paula Shrewsbury Extension Specialist pshrewsb@umd.edu Karen Rane Plant Pathologist rane@umd.edu Chuck Schuster Extension Educator cfs@umd.edu Ginny Rosenkranz Extension Educator rosnkrnz@umd.edu David Clement Plant Pathologist hgic.umd.edu Andrew Ristvey Extension Specialist aristvey@umd.edu Brian Clark Extension Educator bpclark@umd.edu Thank you to the Maryland Arborist Association, the Landscape Contractors Association of MD, D.C. and VA, the Maryland Nursery and Landscape Association, Professional Grounds Management Society, and FALCAN for your financial support in making these weekly reports possible. Photos are by Suzanne Klick or Stanton Gill unless stated otherwise. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by University of Maryland Extension is implied. University of Maryland Extension programs are open to all citizens without regard to race, color, gender, disability, religion, age, sexual orientation, marital or parental status, or national origin.
Page 1 and 2: TPM/IPM Weekly Report for Arborists
Page 3 and 4: Scale Updates Oak lecanium scale (s
Page 5 and 6: Privet Rust Mite You have to have g
Page 7: Ambrosia Beetles We had the second

13Jun07 - University of Maryland Extension

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