Mont Alto Forest Technology students assess and improve arboretum tree health using a Resistograph and an air-spade from Bartlett Tree Experts, Chambersburg Office (October 30).

Shane Wagoner, Bartlett Tree Experts, uses the

 Resistograph to measure tree decay.

Student, Richie Scott, air-spades soil to loosen it and then Bio-Char is added and incorporated to improve soil conditions for a campus arboretum pin oak (below).

Brad Evans, Bartlett Tree Experts (far right), added Bio-Char and 'Boost," a fertilizer to this white oak while Tyler Hoffman finishes up by raking the loose soil back over the fine roots.