Nathan Slaton
Associate Vice President for Agriculture
Professor & Director of Soil Testing
University of Arkansas
Fayetteville, AR 72704
Phone: 479-575-3910
nslaton@uark.edu
Dawn Pettinelli
Associate Extension Educator
Director of Home & Garden Education Center
Director of Soil & Nutrient Analysis Lab
University of Connecticut
Phone: 806-486-4274
dawn.pettinelli@uconn.edu
Robert O. Miller
ALP Technical Director
Agricultural Laboratory Proficiency Program
Fort Collins, CO 80523
Phone: 970-686-5702
rmiller@soiltesting.us
Karen L. Gartley
Dept. of Plant and Soil Sciences
University of Delaware
Newark, DE 19716-2170
Phone: 302-831-1385
Fax: 302-831-0605
kgartley@udel.edu
Amy Shober
Extension Specialist
Nutrient Management and Environmental Quality
University of Deleware
Phone: 302-831-2146
ashober@udel.edu
Jarrod Miller
Extension Specialist - Agronomy
University of Deleware
Carvel Research and Education Center
Phone: 302-856-7303
jarrod@udel.edu
Gordan Johnson
Extension Specialist - Fruits and Vegetables
University of Deleware
Carvel Research and Education Center
Phone: 302-856-7303
gcjohn@udel.edu
Jay Lessl
Agricultural & Environmental Services Laboratories
University of Georgia
2400 College Station Rd
Athens, GA 30602
Phone: 706-542-5350
jlessl@uga.edu
Lynn Stanley
Land O Lakes (Sure-Tech Labs)
2435 Kentucky Ave
Indianapolis, IN 46221
Phone: 317-243-1502
Jodi Gessner
Land O Lakes (Sure-Tech Labs)
2435 Kentucky Ave
Indianapolis, IN 46221
Phone: 317-243-1502
Ed Hopkins
LandOLakes (Sure-Tech Labs)
2435 Kentucky Ave
Indianapolis, IN 46221
Phone: 317-243-1502
Fax: 317-243-1584
elhopk@landolakes.com
Frank J. Sikora
University of Kentucky
Soil Testing Lab
Regulatory Service Bldg
Lexington, KY
Phone: 859-257-7355
fsikora@uky.edu
Edwin Ritchey
Extension Specialist
Soil and Nutrient Management
University of Kentucky
Princeton, KY 42445
Phone: 859-562-1331
elritc2@uky.edu
John Grove
Director of UK Research & Education Center at Princeton
University of Kentucky
Princeton, KY 42445
Phone: 859-562-1301
jgrove@uky.edu
Gurpal Toor
Extension Specialist - Environmental Science
University of Maryland
0214 HJ Patterson Hall
College Park, MD 20742
Phone: 301-405-1215
gstoor@umd.edu
Nicole Fiorellino
Extension Specialist - Agronomy
University of Maryland
2124 Plant Sciences Building
College Park, MD 20742
Phone: 301-405-6241
nfiorell@umd.edu
Andrew Ristvey
Extension Specialist - Commercial Horticulture
University of Maryland
124 Wye Narrows Drive
Queenstown, MD 21658
Phone: 410-827-8056 x113
aristvey@umd.edu
Melissa Wilson
Associate Professor
Manure Management and Water Quality
University of Minnesota
Phone: 612-625-4276
mlw@umn.edu
Joseph Heckman
Extension Specialist - Soil Fertility
Rutgers University
59 Dudley Road, Foran Hall
New Brunswick, NJ 08901
Phone: 848-932-6333
jheckman@njaes.rutgers.edu
Stephanie Murphy
Director - Soil Testing Lab
Rutgers University
57 US Highway 1, ASB=II
New Brunswick, NJ 08901
Phone: 848-932-9295
smurphy@njaes.rutgers.edu
Alon Rabinovich
Soil Fertility, Small Farm Technologies
Rutgers University
Newark, NJ 07102
Phone: 973-353-2758
ar1152@newark.rutgers.edu
Quirine Ketterings
Professor, Animal Science
Cornell University
Ithaca, NY 14853
Phone: 607-255-3061
qmk2@cornell.edu
David Hardy
Agronomic Division
North Carolina Dept. of Agriculture
4300 Reedy Creek Road
Raleigh, NC 27607-6465
Phone: 919-733-2656
Fax: 919-733-2837
david.hardy@ncagr.gov
Kristin Hicks
Plant Tissue, Waste & Compost, Solutions and Soilless media
Agronomic Division, NCDA&CS
4300 Reedy Creek Rd.
Raleigh, NC 27607
Phone: 919-733-6465
Kristin.Hicks@ncagr.gov
Stephanie Kulesza
Nutrient Management & Animal Waste
Crop & Soil Sciences
North Carolina State University
Campus Box 7619
Raleigh, NC 27695
Phone: 919-515-5290
sbkulesz@ncsu.edu
Luke Gatiboni
Soil Fertility Specialist
Crop & Soil Sciences
North Carolina State University
Campus Box 7619
Raleigh, NC 27695
Phone: 919-649-7619
luke_gatiboni@ncsu.edu
John Hoben
Research Assistant Professor
Water Resources Center
East Carolina University
Greenville, NC 27858
hobenj19@ecu.edu
Deanna Osmond
Professor - Soil Fertility & Watershed Management
North Carolina State University
Raleigh, NC 27695
Phone: 919-515-7303
dosmond@ncsu.edu
Scott Anderson
Spectrum Analytic, Inc.
P O Box 639
Washington Courthouse, OH 43160
Phone: 800-321-1562
Phone: 740-335-1562
Fax: 740-335-1104
Luke Baker
Brookside Lab Inc.
CEO, President
New Bremen, OH 45869
Phone: 419-977-2766
Fax: 419-977-2767
ceo@blinc.com
Mark Flock
Brookside Lab Inc.
Phone: 419-753-2448
Fax: 419-753-2949
mflock@blinc.com
Vernon Pabst
Spectrum Analytic, Inc.
P O Box 639
Washington Courthouse, OH 45160
Phone: 800-321-1562
Phone: 740-33501562
Fax: 740-335-1104
vernon@spectrumanalytic.com
Charlie White
Extension Specialist - Soil Fertility
410 Ag. Sciences and Industries Bldg.
Penn State University
University Park, PA 16802
Phone: 814-863-1016
cmw29@psu.edu
John Spargo
Agricultural Analytical Services lab
Penn State University
University Park, PA 16802
Phone: 814-863-0841
jts29@psu.edu
Tim Hoerner
Precision Testing & Analysis, LLC
Bird in Hand, PA 17505
Phone: 717-917-9192
timhoerner@comcast.net
Shannon Alford
Director
Agricultural Service Laboratory
Clemson University
171 Old Cherry Rd.
Clemson, SC 29634
Phone: 864-656-2300
sralfor@clemson.edu
Bhupinder S. Farmaha
Assistant Professor, Nutrient Management
Plant & Environmental Sciences
Clemson University
64 Research Road
Blackville, SC 29817
Phone: 803-284-3343 Ext. 244
bfarmah@clemson.edu
Oscar F. Ruiz Jr.
Memphis A&L Laboratories Inc.
Laboratorios A-L México S.A. de C.V
Heartland A&L Laboratories Inc.
2790 Whitten Road
Memphis, TN 38133
Phone: 901-213-2400
Fax: 901-213-2440
oruiz@allabs.com
Robert Florence
University of Tennessee
Soil, Plant and Pest Center
Nashville, TN 37211
Phone: 615-832-5850
rfloren2@utk.edu
Huijie Gan
Soil Health Specialist
Virginia Tech University
Blacksburg, VA 24061
huijie.gan@uconn.edu
Steve Heckendorn
Virginia Tech Soil Testing Lab
145 Smyth Hall (0465)
Blacksburg, VA 24061
Phone: 540-231-9807
Fax: 540-231-9262
shckndrn@vt.edu
Rory Maguire
Virginia Tech
Crop & Soil Environmental Sciences
424 Smyth Hall (0428)
Blacksburg, VA 24061
Phone: 540-231-0472
rmaguire@vt.edu
Mark Reiter
Professor of Soils & Nutrient Management
Virginia Tech
Eastern Shore AREC
Painter, VA 23420
Phone: 757-807-6576
mreiter@vt.edu
Bryan Hopkins
North American Proficiency Testing Program
Coordinator
Soil Science Society of America
Phone: 801-602-6618
naptcoordinator@soils.org
Tom Basden
Extension Specialist - Nutrient Management
West Virginia University
Morgantown, VA 26506
Tom.Basden@mail.wvu.edu