TruGreen Pesticide Certification 6,3a,3b questions with correct answers

questions with correct answers Abiotic disorder Correct Answer-A non-pest plant stress such as improper nutrition, too much or too little water, winter or frost injury Action threshold Correct Answer-The pest density at which action (such as pesticide application) is justified to prevent further damage. Adelgid Correct Answer-An insect closely related to aphids that feed on conifers. Their feeding often causes galls to form. Aesthetic injury level Correct Answer-The point at which damage from a pest becomes noticeable enough to negatively affect the visible quality of the plant. This may vary, based in part on the distance the plant is located from walkways. (and therefore, on the likelihood of the damage being observed. Airblast sprayer Correct Answer-Pesticide application equipment that uses a stream of air from a fan to break up and distribute the pesicide onto the plant that is being treated. Allelopathy/allelopathic Correct Answer-When one plant species suppresses the growth of another. For example, walnut trees produce chemicals that will not allow plants to grow under their canopies. Annual Correct Answer-A plant that completes its life cycle and dies in a single year or growing season. Bacteria Correct Answer-A group of single-celled