Master Course Outline
AGPR-105
Weed Biology and Identification
Credits: 5
Clock Hours per Quarter: 50
Lecture Hours: 50


Description
Introduction in weed science to provide an understanding of the principles and methods of controlling weeds, use and development of herbicides, methods of application and rate calculation, sprayer components and calibration, and practical knowledge of plant and seed samples of weeds common to the Pacific Northwest.

Intended Learning Outcomes
  • Identify when a plant is a weed or not a weed depending on where it is growing.
  • Identify the costs of controlling weeds, when given a crop and the problem weeds, to a dollar per acre basis.
  • Describe the competition factors of weeds to crops in a classroom situation when given the type and size of weed, to include nutrients, water, and available space requirements on a yield reduction per acre basis.
  • Recognize the type of leaf arrangement, veination pattern, margin pattern and type of leaf attachment, when given a plant sample.
  • Place plants into their proper taxonomic family based on external morphology.
  • Identify crop plants and weeds which are members of the same taxonomic family.
  • Classify weeds by life cycle into, the categories of winter annual, summer annual, biennial and perennial when provided with an identification list.
  • Define the means of spread or dispersal of that weed when given a plant sample.
  • Classify means by which weeds spread into sexual or asexual when given an example structure in class.
  • Trace the life cycle from plant to seed and back to plant within acceptable criteria as outlined in class if given a particular weed.
  • Classify the practice to control weeds into: chemical, biological, or physical.
  • Identify the proper control method to use depending upon the stage of development when given a weed sample.
  • Develop an integrated weed control program that will adequately control the weed population when given a certain crop and the weeds that are considered problems.
  • Classify herbicide application methods into pre-plant, pre-emergence, or post-emergence.
  • Select the proper time of application for a herbicide when given the weeds to be controlled and the crop in which they are located.
  • Classify its mode of action into one of four broad categories as discussed in class when given a sample peaticide.
  • Identify the proper application method to use for effective control of a given weed problem.
  • Identify the type of formulation for a herbicide when given a sample of the product and the label.
  • Describe the mode of action for surfactants and the reasons for using them in herbicide formulations.
  • Identify all of the component parts of a sprayer to include tank, agitator, pump, boom, nozzles, and bypass line.
  • Perform calculations to determine the amount of herbicide to add to the spray tank and the amount of chemical applied to the target area with 1% tolerance limits when given a sample problem.
  • Prepare a herbicide mixture in a spray tank and apply it to the target area at the proper rate of application when in an actual situation.
  • Demonstrate an appreciation for safe handling and use of herbicides in a field situation by identifying unsafe acts as they occur.
  • Develop an understanding of herbicide resistance in plants and be able to identify the factors which regulate development of resistance in a plant population.
  • Recognize the methods which a grower can use to delay and/or avoid development of herbicide resistance in their weed control program.

Course Topics
  • Introduction to Weed Science
  • Plant Morphology/Taxonomy
  • Classification, Identification and Spread of Weeds
  • Methods of Weed Control
  • Principles of Herbicide Usage and Selectivity
  • Herbicide Application
  • Herbicide Resistance


Syllabi Listing
Course
Year Quarter
Item
Instructor Files
AGPR 105
B344
0076
Matthew Williams
AGPR 105
B344
0052
Matthew Williams
AGPR 105
B343
0052
Matthew Williams
AGPR 105
B014
5033
Jerry Kjack
AGPR 105
B014
0042
Jerry Kjack


Two Year Projected Schedule

2014 - 20152015 - 2016
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
X
X
X
X
X
X
X
X