Weed Science, PLS 4601c Section 7644
and Grad. – Prin. Of Weed Science AGR 6932 Section 9212
University of Florida - Davie
Philip Busey, email@example.com
May 18, 2009
Material from May 14 for Quiz #2 on May 21
Below are the main things discussed on weeds, chemistry, and biology in the form of
questions, some with answers.
sections 1, 2, 3, 9, 14, and 15
in “Weed Science – Learning Concepts”.
there is anything you don’t understand, call, write, or look it up.
Please review “Quiz 1
– Physical and Natural Sciences and Mathematics (Review)”
questions 1 through 14
. The answers are: 1 (a), 2 (c), 3 (d), 4 (162), 5 (a), 6 (a),
7 (b), 8 (b), 9 (a), 10 (b), 11 (c), 12 (d), 13 (b), 14 (e – really all of the above), 15 (b), 16 (b), 17
(d), 18 (a), 19 (a) 20 (b).
What are two different definitions of a weed?
The definition in many textbooks is that weeds are unwanted plants.
that Phil Busey prefers is that weeds are plants that are adapted to disturbed
habitats. Using the second definition, what biological characteristics are often
present in weeds?
What disturbances occur naturally?
How can weeds be both beneficial and detrimental?
How do weeds often grow in patches?
We looked at patches of weeds growing in front of the main building including green
shrimp plant and matchweed. How might a site have different kinds of weeds
dominating in different areas? (Remember where dollarweed grows.)