Advanced Training – PDM Domain – Abiotic Problems

Course Description

The Abiotic Problems module will provide an in-depth study of common abiotic stresses on trees and woody plants. We will discuss specific abiotic disorders associated with environmental conditions, nutrient deficiencies, chemical injury, animal and mechanical damage along with various other stresses people inflict on plants. We will also cover diagnostic skills needed to recognize these stresses and suggest remedies to correct, minimize or prevent these problems. We will discuss the importance of laboratory analysis of soil, water and tissue samples in properly diagnosing plant problems.

Weather permitting, outdoor sessions will be conducted, and case studies will provide hands on practice at diagnosing abiotic tree problems. During the outdoor sessions, we will also evaluate various signs and symptoms, site conditions and plant history, so that we can accurately identify the cause of the problem. Focus will be on the types of stresses that predispose trees to decline. Materials will be covered through power point slides and field case studies. A 50-point multiple choice test will be given at the end of class.

Recommended Reading

1. Abiotic Disorders of Landscape Plants, A Diagnostic Guide, Lawrence R. Costello. Edward J. Perry, Nelda P. Matheny, J. Michael Henry, Pamela M. Geisel, 2003.
2. Diseases of Trees in the Great Plains and is available online and can be downloaded for free at: https://www.fs.fed.us/rm/pubs/rmrs_gtr335.pdf

Outcomes

Upon completion of the Abiotic Problems module each participant will gain knowledge of the following:

• A better understanding of common abiotic stresses on woody plants.
• The ability to differentiate between abiotic, biotic and look-a-like disorders.
• Skills essential to the diagnostic and decision-making process.
• A better understanding of tools to aid the arborist while diagnosing plant problems.