Our Staff

Picture of Brian Barber and Link to full profileBrian Barber

Director of Soil Testing/Research Analytical Lab

bbarber@umn.edu  |  +1 612-625-3101

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Picture of Keith Piotrowski and Link to full profile

Keith Piotrowski

Manager of the Soil Testing and Research Analytical Laboratory

kpiotr@umn.edu  |  +1 612-625-3101




Picture of Angela Gunlogson and Link to full profileAngela Gunlogson

Soil Lab Scientist

gunl0001@umn.edu  |  +1 612-625-6704




Picture of Tom Graff and Link to full profileTom Graff

Soil Scientist - Part-time

tgraff@umn.edu  |  +1 612-625-9713




Picture of Victoria Meltzer and Link to full profileVictoria Meltzer

Researcher 2





Picture of RiAnna ButlerRiAnna Butler

Researcher 2 - Plant Lab 

butl0130@umn.edu  |  +1 612 625-5778




Picture of Heather DonohoHeather Donoho

Researcher 1





Picture of Stephanie Gawtry and Link to full profileStephanie Gawtry

Principal Office and Administrative Specialist 

schum416@umn.edu  |  +1 612-625-3101