Kenya Certificate of Secondary Education
2019 Agriculture Paper 1
SECTION A (30 marks)
Answer all the questions in this section in the spaces provided.
I. Name four aspects of rain fall that affects agriculture. (2 marks)
2. State four factors that determine the depth of cultivation. (2 marks)
3. State four factors that influence the quality of farmyard manure.(2 marks)
4. State two factors that determine national income. (1 marks)
5. State four causes of land fragmentation. (2 marks)
6. Name two types of labour records.(2 marks)
7. State four ways in which crop pests are classified.(2 marks)
8. What is the minimum number of people required to form a co-operative society in Kenya? (½ marks)
9. Give two examples of fixed costs in maize production. (1 marks)
10. What is meant by the term production function? (1 marks)
11. State three characteristics of good trees for agroforestry.(1½ marks)
12. Name two varieties of sorghum grown in Kenya.(1 marks)
13. State four reasons why agriculture is important to Kenya’s economy.(2 marks)
14. Give two reasons why the use of fire is discouraged in land clearing.(1 marks)
15. State four ways in which mulching conserves water.(2 marks)
16. State four uses of fault records.(2 marks)
17. State four characteristics of shifting cultivation.(2 marks)
18. State the law of supply as used in agricultural marketing.(1 marks)
19. State four ways in which trees improve soil productivity.(2 marks)
20. What is meant by the term integrated pest management? (2 marks)
Section B (20 MARKS)
Answer all the questions in this section
21. The diagram below illustrate a tomato fruit infested by a field pest
(a) Identify the pest. (1 mark)
(b) State two ways in which the pest is economically important. (2 mark)
(c) State two cultural ways of controlling the pest. (2 mark)
22. The diagram below shows a weed
(a) Identify the weed. (1 mark)
(b) Using features on the diagram, give two reasons why it is difficult to eradicate the above weed. (2 marks)
(c) State two ways in which the weed is economically important. (2 marks)
23. The diagram below represent soil structures
(a) Identify the soil structure labelled M, N and P.
M…………………………………( 1 mark)
N…………………………………( 1 mark)
P…………………………………( 1 mark)
(b) Name the type of soil where each of the structures labelled N and Q is found.
N…………………………………..( 1 mark)
Q…………………………………..( 1 mark)
24, The diagram below shows an illustration of a crop field practice.
(a) Identify the field practice illustrated above.(I mark)
(b) Name two crops which require the practice illustrated.(2 mark)
(c) Give two reasons for carrying out the practice on one of the crops you have named in (b) above. (2 marks)
SECTION C (40 marks) Answer any two questions from this section
25. (a) Explain seven factors that should be considered when selecting seeds for planting. (7 marks)
(b) State four benefits of adequate and reliable rainfall in vegetable crop production. (4 marks)
(c) State four pieces of information contained in an invoice.(4 marks)
(d) State five roles of calcium in crop production.(5 marks)
26. (a) Describe how sugar cane is harvested.(5 marks)
(b) Explain four factors that determine the nutrient content of hay.(4 marks)
(c) State seven roles of a farm manager.(7 marks)
(d) Describe four methods used to reclaim a swampy land for agricultural production. (4 marks)
27. (a) Describe the production of carrots under the following subheadings:
(i) land preparation (3 marks)
(ii) planting (4 marks)
(b) Describe six ways in which grass cover helps in soil and water conservation. (6 marks)
(c) Explain seven nursery management practices. (7 marks)
