Agriculture Form Four Question Paper

Agriculture Form Four

Course:Agriculture

Exam Year:2007

FRIENDS SCHOOL KAMUSINGA
KIMILILI

PRINCIPLES AND PRACTICES OF AGRICULTURE
FORM 4 CAT3 TERM1 2007
DATE: 28/3/2007
PAPER 1
TIME: 2 HOURS

INSTRUCTIONS:

• This paper consists of three sections. A B and C.
• Answer ALL questions in section A and B and any TWO questions in section C.

SECTION A: (30 MARKS)

1. What is rouging as used in crop production? ( 1 mark)

2. State two functions of plastic materials when used as a mulch in crop production. (1 mark)

3. What is meant by the term Gross Margin? (1 mark)

4. Name four examples of working capital used in Tomato Production. (2 marks)

5. State four reasons that have enabled owner – operator Land Tenure to become more population. (2 marks)

6. Give six farming practices that could be used to improve soil structure. (3 marks)

7. Differentiate between Gross National product and Gross domestic product. (2 marks)

8. Explain how you can determine a point of profit maximization by analyzing marginal revenue (MR) and marginal cost (MC). (2 marks)

9. List four ways which a farmer can use to improve the production efficiency without increasing the cost of production. (2 marks)

10. Explain the use of the following financial documents. (4 marks)
i) Invoice

ii) Receipt.

iii) Delivery rate.

iv). Purchase order.

11. State four benefits of budgeting to a farm manager. (2 marks)

12. State four activities carried out by Young Farmers Clubs in Kenya. (2 marks)

13. State four advantages of organic farming to Environmental Conservation. (2 marks)

14. Give five effects of soil PH on the growth of plants. (5 marks)

SECTION B: (30 MARKS)

In an experiment 900 viable maize seeds were divided into groups of 100 seeds each. Each group of seeds was placed at different temperatures but same conditions of air and moisture. The percentage germination was determined after 10 days.

The table below shows percent germination at the various temperatures.

Temperature 0c 0 5 10 15 20 25 30 35 40
% Germination 0 0 2 5 16 50 80 30 2

a) Using a suitable scale, draw a graph of percent germination against Temperature. (5 marks)
b) Account for percent germination. (3 marks)

i) 50c

ii) 300

iii) 400

15. Explain the role played by each of the following factors in the germination of seeds. (2marks)
(i) Water

(ii) Air

16. A Diagrams A, B C and D below illustrate various stages of method used in vegetative propagation.

(i) Identify the method of vegetative propagation illustrated in the diagrams above.(1 mark)

(ii) Why is tying necessary as illustrated in C? (1 mark)

(iii) Name the part of D marked y. (1 mark)

(iv) Name a crop plant in which the method of propagation illustrated above is recommended. (1 mark)

(b) Give six factors that necessitate the use of vegetative parts to establish crops other than the use of seeds. (6 marks)

17. State law of diminishing returns in a production process. (1 mark)

18. Use the information on the Table below to answer questions that follow.
Fertilizer input (units) Maize yield (bags) Marginal product (Bags)
0 50 -
1 62 12
2 66 4
3 68 2
4 69 1
5 69 0

The cost of fertilizer is sh 1500 per unit and the priced of maize is sh 1200 per bag.

(i) At what unit of fertilizer input should the farmer be advised to stop applying any more fertilizer to the maize? (1 mark)

(ii) Give a reason for your answer in (i) above. (1 mark)

(iii) Calculate the marginal return at the point of optimum production. (1 mark)

19. (a) State two cultural methods of control pests on a field of crops. (1 mark)

(b) Give four factors affecting effectiveness of a pesticide. (2 marks)

20. (a) Name two structures of soil and water conservation. (1 mark)

(b) Give three ways in which a grass wall conserves soil. (3 marks)

SECTION C (40 MARKS)
Answer any two questions in this section.

21. Use the following information to prepare
a. (i) A profit and loss account for Mr Kariuki’s farm as at 30th June 2005

Vegetables 5000
Close valuation 10,000
Rent receivable 3,000
Veterinary costs 2,000
Sale of grains 2,000
Depreciation of machines 1,500
Opening valuation 5,000
Wages 4,000
Interest payable on borrowed loan 1,000
Purchase of fertilizer 3,000

(ii) Did the farm make a profit or loss? (1 mark)

(iii) Calculate the percentage profit or loss made. (1 mark)

b. (i) Outline the risks and uncertainties experienced by farmers. (5 marks)
(ii) Discuss ways that a farmer uses in adjusting to any five risks and uncertainities named in (bi) above. (5 marks)

22. (a) Discuss the production of Beans (Phaseolus vulgaris) under the following sub-headings. (10 marks)
(i) Land preparation
(ii) Planting
(iii) Weed control
(iv) Diseases and their control
(v) Harvesting

(b) Outline any five precautionary measures taken before storing cereal crops.(5 marks)

(c) Give any five physical methods of controlling storage pests. (5 marks)

23. (a) Outline any ten functions of statutory Boards and Anthorities. (10 marks)
(b) Explain five factor necessary for co-operation to succeed. (10 marks)

END
GOOD LUCK

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