Are you injuring your trees? What is phytotoxicity and how to avoid it

Many growers use chemicals to control disease or insect pests. Every chemical applied to trees has the potential to injure foliage and produce phytotoxicity symptoms. Dr. Gary Chastagner will review what phytotoxicity is, discuss phytotoxicity issues we are finding on spruce and fir and provide guidelines to help reduce damage.