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Use this study manual to prepare for the Washington State Department of Agriculture Wood Treatment category exam.
Learn the essentials of protecting wood from insects, fungi, and environmental damage with science-based guidance tailored for professional applicators. This publication offers practical training to meet state and federal regulations while keeping people and the environment safe.
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Weed control on turf and in ornamental plantings. Covers weed science and herbicide basics, precautions for spray use, and fine points of application equipment. THIS IS THE OLD VERSION: If you are taking your pesticide…
Have you ever wondered what causes your rhododendron's leaves to turn yellow or why your apple tree has fruit with brown spots? This book will help you identify all kinds of plant problems.
This manual is intended to help beginning pest control operators prepare for Washington State pesticide licensing exams.
A guide to weed management principles for applicators. This is a new manual: If you are taking your pesticide licensing exams on or after January 1, 2026, purchase and use this revised study manual to…
