Terramaster, formerly knows as Terrazole, can cause injury if the chemical is introduced to the bed at one point in a concentrated form.  To avoid damage mix as a slurry in a five-gallon bucket or equivalent and distribute to the bed evenly.  A sump pump is ideal where water from the bed is taken up, mixed with the Terramaster and reintroduced to the bed in a diluted form.  High temperatures may result in damage even at labeled rates.  Plants may be delayed in growth, but tend to grow out of damage over time.  Ground sucker development, while present in some cases, is most likely associated with an unrelated cold injury event.