PLSCS 3150 - Weed Biology and Management

(OPHLS-AG)

Fall. 4 credits. Letter grades only.

Prerequisite: introductory course in biology or botany.

K. Averill.

Examines principles of weed science. Emphasizes (1) weed biology and ecology, (2) weed-management strategies used in agricultural and natural ecosystems, and (3) chemistry of herbicides in relation to effects on plant growth and the environment. Hands-on laboratory sessions cover weed identification and ecology, crop-weed interactions, herbicide application, selectivity, and symptomology.

Outcome 1: Identify the different life stages of at least 90 weed species commonly found in the Northeastern United States and southern Canada.

Outcome 2: Identify and describe the major biological factors and ecological principles that influence weed growth, population dynamics, invasiveness, and survival.

Outcome 3: Be familiar with the various strategies currently being used to control and/or suppress weeds in different crop and non-crop systems.

Outcome 4: Be familiar with the classification, mode of action, selectivity, and symptomology of commonly used herbicides.

Outcome 5: Calculate and apply the appropriate amount of a given herbicide that is required to treat a specific area using a backpack sprayer.

Outcome 6: Appreciate the diversity and impact that weeds have in different ecosystems.