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Form 3 Agriculture Paper 1 End of Term 3 Examination 2022

Class: Form 3

Subject: Agriculture

Level: High School

Exam Category: Form 3 End Term 3 Exams

Document Type: Pdf

Views: 714 Downloads: 3

Exam Summary

Term 3 - 2022
AGRICULTURE (443/1)
FORM THREE (3)
Time: 2½ Hours
Name: …………………………………………………………. AdmNo: ……………….
School: ……………………………………………………….. Class: …………………..
Signature: …………………………………………………….. Date: …………………...
INSTRUCTIONS TO CANDIDATES
❖ THIS PAPER CONSISTS OF THREE SSECTIONS A,B AND C
❖ ANSWER ALL QUESTIONS IN SECTION A AND B
❖ ANSWER ONLY TWO QUESTIONS IN SECTION C IN THE ATTACHED FOOLSCAPS

SECTION A (30MKS)
Answer all questions in the spaces provided.
1. State four factors influencing the choice of the farming methods a farmer may use. (2mks)
a) …………………………………………………………………………………………………………………..
b) …………………………………………………………………………………………………………………..
c) …………………………………………………………………………………………………………………..
d) …………………………………………………………………………………………………………………..
2. State four advantages of drip irrigation. (2mks)
a) ……………………………………………………………………………………………………………………….
b) ………………………………………………………………………………………………………………………
c) ………………………………………………………………………………………………………………………
d) ………………………………………………………………………………………………………………………
3. Outline four farming practices that destroy soil structure. (2mks)
a) …………………………………………………………………………………………………………………………
b) …………………………………………………………………………………………………………………………
c) …………………………………………………………………………………………………………………………..
d) ………………………………………………………………………………………………………………………….
4. State four reasons why a farmer may fail to get profit from a farming enterprise. (2mks)
a) ……………………………………………………………………………………………………………………………
b) ……………………………………………………………………………………………………………………………
c) ……………………………………………………………………………………………………………………………
d) ……………………………………………………………………………………………………………………………
5. Give four advantages of preparing land early for planting sorghum. (2mks)
a) ………………………………………………………………………………………………………………………………
b) ……………………………………………………………………………………………………………………………….
c) ………………………………………………………………………………………………………………………………...
d) …………………………………………………………………………………………………………………………………..
6. Differentiate between hybrid and composite as used in crop production. (2mks)
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
7. What is meant by term domestication as used in Agricultural production? (1mk)
……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
8. Highlight two ways of hardening off tomato seedlings before transplanting. (1mk)
a) ………………………………………………………………………………………………………………………………
b) ………………………………………………………………………………………………………………………………...
9. Give a reason as to why a farmer is supposed to observe the following precautions in the farm. (2mks)
a) Always store farm yard manure under a shade.
…………………………………………………………………………………………………………………………………..
b) Wear gloves while applying nitrogenous fertilizers.
…………………………………………………………………………………………………………………………………..
10. Give two reasons for conserving forage. (1mk)
a) ………………………………………………………………………………………………………………………………
b) ………………………………………………………………………………………………………………………………
11. Outline four ways in which grass help to conserve soil. (2mks)
a) …………………………………………………………………………………………………………………………………..
b) …………………………………………………………………………………………………………………………………..
c) …………………………………………………………………………………………………………………………………
d) …………………………………………………………………………………………………………………………………
12. Give two signs of blight in a field of tomatoes. (1mk)
a) ………………………………………………………………………………………………………………………………..
b) ………………………………………………………………………………………………………………………………..
13. State two factors that adapt weeds excellently to their environment. (1mk)
a) ………………………………………………………………………………………………………………………………
b) ………………………………………………………………………………………………………………………………
14. Give two reasons for inoculating legume seeds before planting. (1mk)
a) ……………………………………………………………………………………………………………………………….
b) ……………………………………………………………………………………………………………………………….
15. Give two reasons why most of Kenyan farmers practice small scale farming. (1mk)
a) ………………………………………………………………………………………………………………………………
b) …………………………………………………………………………………………………………………………….
16. Define the law of profit maximization. (1mk)
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
17. Distinguish between stocking rate and carrying capacity as used in forage production. (2mks)
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………
18. Outline four ways a farmer can use to improve labour productivity in the farm. (2mks)
a) …………………………………………………………………………………………………………………………
b) …………………………………………………………………………………………………………………………..
c) …………………………………………………………………………………………………………………………….
d) ……………………………………………………………………………………………………………………………
19. State 4 ways of modifying soil pH. (2mks)
a) ………………………………………………………………………………………………………………………..
b) ………………………………………………………………………………………………………………………..
c) ……………………………………………………………………………………………………………………….
d) ………………………………………………………………………………………………………………………

SECTION B (20MKS)
Answer all questions in the spaces provided.
20. The diagram below illustrates different methods used in crop propagation. Study the diagrams and answer the questions that follow.

a) Identify the methods of crop propagation illustrated by A,B and D. (3mks)
A:……………………………………………………………………………………………………
B:…………………………………………………………………………………………………….
D:…………………………………………………………………………………………………….
b) Identify the parts labelled X and Y in diagram A. (2mks)
X:…………………………………………………………………………………………………….
Y:…………………………………………………………………………………………………….
c) Under what conditions is method C used by farmers. (1mk)
………………………………………………………………………………………………………………………………………
d) Give two advantages of using the method illustrated in diagram D after bananas are planted in the main field. (2mks)
a) …………………………………………………………………………………………………………………………….
b) …………………………………………………………………………………………………………………………….
21. The diagram below illustrates some common weed. Study it carefully and answer the questions that follow.

a) Identify the weeds labelled A and B. (2mks)
A: ……………………………………………………………………………………………………………………………….
B:………………………………………………………………………………………………………………………………..
b) State one factor that makes weed B difficult to control in a pasture field. (1mk)
……………………………………………………………………………………………………………………………………
c) State one economic importance of each of the weeds labelled A and B. (2mks)
A:………………………………………………………………………………………………………………………………..
B:…………………………………………………………………………………………………………………………………
22. The diagrams below illustrate different methods used in soil and water conservation. Study the methods and answer the questions that follow.

a) Identify the methods illustrated by (i) (ii) and (iii). (3mks)
(i)……………………………………………………………………………
(ii) …………………………………………………………………………...
(iii) …………………………………………………………………………...
b) State two methods by which the structure in (iii) controls soil erosion. (2mks)
(i) …………………………………………………………………………………………………..
(ii) …………………………………………………………………………………………………..
c) Name two materials used to make the structure in (iii) above. (2mks)
(i) ……………………………………………………………………………………………………..
(ii) ……………………………………………………………………………………………………..

SECTION C (40MKS)
Answer any two questions from this section.
23. (a) Describe production of Napier grass under the following sub-headings.
(i) Land preparation (2mks)
(ii) Planting and planting materials (2mks)
(iii) Fertilizer application (2mks)
(iv) Defoliation (2mks)
(v) Weed control (2mks)
(b) Explain six factors that can influence a well-designed crop rotation programme. (6mks)
(c) Give four signs that would enable you to identify compost manure that is ready for use. (4mks)
24. (a) Describe procedure of preparing silage. (5mks)
(b) Outline five precautions taken in harvesting tea. (5marks)
(c) Describe the management practices carries out in a cabbage nursery. (10mks)
25. (a) Describe process of water treatment in a water treatment plant. (10mks)
(b) Briefly explain four factors influencing mass wasting. (4marks)
(c) Explain six cultural methods of controlling crop diseases. (6mks)

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