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Kst 110: Introduction To Crop Protection Question Paper

Kst 110: Introduction To Crop Protection

Course:Bachelor Of Science

Institution: Kenyatta University question papers

Exam Year:2011

DATE: Friday 1st April, 2011

TIME: 8.00 a.m. – 10 .00 a.m.

INSTRUCTIONS

Answer ALL Questions in Section A and any Two Questions in Section B

Section A: Answer all questions.

1.
Differentiate between quantitative and qualitative losses caused by crop pests. (5 marks)

2.
Define plant diseases and explain the difference between symptoms and signs.(5 marks)

3.
Discuss the factors that make pests more serious constraints in developing countries,
compared to developed countries.

(5 marks)

4.
Briefly explain how plant pests affect trade in Kenyan agricultural products. (5 marks)

5.
Write brief notes on Koch’s postulates.

(5 marks)

6.
Explain the functions of the following organizations in crop protection in Kenya.

Page 1 of 2

(a)
Kenya Plant Health Inspectorate Services (KEPHIS)
(b)
Pest Control Products Board (PCPB)
(c)
Kenya Agricultural Research Institute (KARI)
(d)
Kenyatta University
(e)
Ministry of Agriculture

7.
Explain the dangers of using pesticides in the context of biomagnifications. (5 marks)

8.
A group of farmers would like to know why weeds and volunteer plants should be
removed promptly. Write brief notes to explain why this is necessary.
(5 marks)

SECTION B: Answer any TWO Questions

9.
Describe the methods applied in forecasting diseases and pest outbreaks and explain the
importance of forecasting.

(15 marks)

10.
A wise farmer relies on integrated pest management methods. Discuss this statement.

(15 marks)

11.
Write an essay on abiotic cause of plant diseases.

(15 marks)

12.
Appropriate and adequate plant nutrition is a prerequisite for a healthy crop. Discuss this
statement.

(15 marks)

Kst 110: Introduction To Crop Protection Question Paper

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