Kst 309: Pesticide Pharmacology. Question Paper

Kst 309: Pesticide Pharmacology.

Course:Bachelor Of Science

Institution: Kenyatta University question papers

Exam Year:2013

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2012/2013
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN AGRICULTURE.
KST 309: PESTICIDE PHARMACOLOGY.
DATE: Friday, 5th APRIL, 2013
TIME: 2.00 P.M-4.00 P.M
INSTRUCTIONS:
Answer all questions in this section A. Each question is 5 marks.
1. Define the following terms:
a) Pesticide residue.
b) Bio-magnifications
c) Action level of a pesticide
d) Maximum residual limits (MRL)
e) Acute toxicity.

2. Citing relevant examples differentiate a pesticide trade name from a chemical name.

3. Briefly classify pesticides on basis of the active ingredient.

4. Briefly explain the properties of organochlorides.

5. Define a bio-pesticide. List a number of bio-pesticide that are now readily available in the Kenyan Market.

6. Outline the ecological effects of herbicides.

7. Briefly describe the three factors promoting insecticides resistance in insects.

8. Outline the properties of an ideal pesticide from a user point of view.
SECTION B
ANSWER ANY TWO QUESTIONS (30 MARKS)
9. Discuss the classification of herbicides by mode of action (MOA)

10. Discuss the factors to consider when choosing a pesticide formulation.

11. Discuss fungicides resistance with special emphasis on the mechanisms involved and cite examples where necessary.

12. Discuss in detail the procedure involved in evaluation of a bio-pesticide.
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