Isa Arborist Certification Study Guide Chapter 1 With Complete Solutions

Use of an _____ has proven effective for soil aeration and radial trenching causing much less root injury than mechanical excavation equipment. {Ans: air excavation device}Without a stated ______, the rating for likelihood of failure is meaningless {Ans: time frame}true/false- safety is the responsibility of all employees from the owner to the ground worker {Ans: true}between the nodes of a stem {Ans: internode}the ____ listed on the container, gives the relative percentage of nitrogen, phosphorus, and potassium {Ans: fertilizer analysis}true/false- if a single rod is being used to support a branch union that is not split, it should be installed just below the branch union {Ans: false}the swollen area at the base of a branch where it arises from the trunk is called the {Ans: branch collar}___ are organisms that are frequently encountered in landscapes, predictably cause injury to landcape plants, and may include particularly noxious pests in the area {Ans: key pests}True/False - A simple degree-day model uses an established threshold temperature and the daily average temperatures to predict pest development stages. {Ans: true}field capacity {Ans: soil after gravitational water has drained}the first steps of the emergency response process