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 Image Number D375-2 |
Left to right: Ohio State University extension horticulturist Randy Zondag, ARS agricultural engineer Heping Zhu, ARS plant pathologist Charles Krause (standing), and technician Adam Clark collect water samples from a pot-in-pot tree-production research site at Willoway Nurseries in Avon, Ohio, for analysis of nutrient and pesticide leaching.
Photo by Stephen Ausmus.
