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final_with_answers - Student Name Weed Science PLS 4601c...

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Student Name _____________________________________________ Weed Science, PLS 4601c Section 7644 and Grad. – Prin. Of Weed Science AGR 6932 Section 9212 University of Florida - Davie http://grove.ufl.edu/~turf/weedscience/ Philip Busey, [email protected] 954-579-3932 (cell) August 6, 2009 Final Exam Multiple choice - circle the right answers, 3 pts. X 50 1. What is the scientific name of tropical soda apple? a) Dioscorea bulbifera b) Imperata cylindrica c) Lygodium microphyllum d) Neyraudia reynaudiana e) Solanum viarum <<<<<<<< 2. Which is a contact herbicide? 3. To which concept does the following statement apply: “Averaged over 3 yr, the daily, conditional weekly, and severely wilted irrigation treatments resulted in 30, 6, and 2% dollarweed cover, respectively.” a) a weed as a plant out of place b) cultural management of weeds <<<<<<<< c) invasive properties of weeds d) negative aspects of weeds e) selective herbicidal control of weeds
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Weed Science – Final Exam - Univ. Florida - Davie Page 2 4. What do the expressions DF, EC, G, L, WDG, WP, WS, and WSP pertain to? 5. The most permanent of environmental degradations: 6. What can you say about the weed to the right: a) interpetiolar stipules b) long petioles <<<<<<<< c) opposite leaves d) parallel venation e) vine 7. Who wrote Silent Spring? 8. The family of the plant on the right is:
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Weed Science – Final Exam - Univ. Florida - Davie Page 3 9. Which herbicide is translocated towards the apex: 10. The weed to the right is in which family: a) coffee b) grasses <<<<<<<< c) pea d) sedges e) sunflower 11. Which herbicide is most toxic (acute oral to adult rats):
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