Agriculture Paper 1 Questions and Answers - Form 3 End Term 2 Exams 2023

QUESTIONS

SECTION A (30MKS)

1. State four factors which determines the farming systems adapted by farmers (2mks)
2. Give four reasons for sub in maize field (2mk)
3. Name two types of inventories in the farm (1mk)
4. State four negative of HIV/AIDS to agriculture (2mks)
5. State four effect of soil erosion (2mks)
6. State four deficiency symptoms of nitrogen in plants (2mks)
7. Highlight two effect of land title deed to farm (1mk)
8. State two methods of controlling headsmat in maize (1mk)
9. Give two forms of large scale farming practiced in Kenya (1mk)
10. State two ways in which parent rode influences soil characteristics (1mk)
11. Give four farming practices carried out to achieve minimum tillage (2mks)
12. State two characteristics of plantation farming (1mk)
13. Give three classes of weeds under growth cycle (1 ½ mks)
14. State four post-harvesting practices on crops (2mks)
15. List four advantages of mulching in Agriculture line (2mks)
16. State three benefits of using certified seeds (2mks)
17. State four importance of air in soil (2mks)
18. State four factors used in classification of inorganic fertilizer (2mks)
19. State one cause of hard pan in soil

SECTION B (20MKS)
Answer All questions

20. The diagram labeled A and B illustrate storage structures study the diagram carefully and answer the question that follows.
    1. Identify the structures (2mks)
       A
       B
    2. State four structural differences between (A and B)
    3. State four maintenance practices carried out on stradine (2mks)
21.              
          
    
    1. Identify the practice illustrated (1mk)
    2. Name material used in N and M and then uses (2mks)
    3. List down four problems faced by a farmer who does not carry out the practice (4mks)
22. The diagram below illustrates a method of propagating some of the common field crop.
    
    Study the diagram and answer the questions that follows
    1. Identify the method illustrated (1mk)
    2. Name two field crop which can be propagated using above method (2mks)
    3. State two conditions to be ensured at point V to ensure full rooting (2mks) 

SECTION C 40MKS

23. Discuss the production of bean under the following sub-headings (20mks)
    1. Land preparation (4mks)
    2. Selecting and treatment of planting materials (4mks)
    3. Planting (4mks)
    4. Field management practices (4mks)
    5. Harvesting of bean (4mks)
24.              
    1. State five advantages and disadvantages of overhead irrigation (10mks)
    2. State factors used in choosing irrigation methods (5mks)
    3. What are the uses of water in livestock farm (5mks)
25.                    
    1. What factors determine the number of secondary cultivation during land preparation (5mks)
    2. Give reasons why minimum tillage may be carried out (6mks)
    3. Explain the activities carried out in tertiary cultivation (6mks)
    4. What are the factors that determine the depth of ploughing (3mks)

MARKING SCHEME

1.              
   • Capital availability
   • Availability if machinery
   • Size of land
   • Resource availability
2.                  
   • To brake hardpan
   • To aerate the soil
   • To allow water infiltration
   • To allow easy root penetration
3.                  
   • Permanent inventory
   • Consumable inventory
4.              
   • Loss of labour when workers dies
   • Time lost when seeking medical services
   • Money used to pay hospital nill
   • Loss of motivation to invest in Agriculture
5.                
   • It cause silting in rivers/dawns
   • Uprooting it crops
   • Eroded soil may cover crops
   • Loss of soil nutrients.
6.              
   • leaf curl
   • Chlorosos on leaves
   • Premature leaf fall
   • Scorching of leaves
7.              
   • The farm has incentive to carry out long term investment
   • Help to solve land dispute
   • Title can be used as security for loan
8.                
   • Use of resistant varieties
   • Early planting
   • Rogueing
   • Use of certified seeds
   • Field hygiene
   • Dose season
9.              
   • Plantation
   • Ranching
10.              
    • Influences the colour of the soil
    • Inluences mineral compositions of the soil
11.            
    • application of herbicides
    • Establishing cover crop
    • Mulching
    • Uprooting weeds
    • Slashing
    • Restricting cultivation in some area where to plant
12.              
    • Large scale farming
    • Production of crop
    • High use of capital
    • Heavy machinery
13.              
    • perennial weed
    • Animal weeds
    • Biennial weed
14.              
    • shelling/threshing
    • Sorting out/grading
    • Drying
    • Dusting
    • Processing
    • Cleaning
    • Packing
15.                
    • suppress weeds
    • Prevent evaporation
    • Control soil erosion
    • Modifies soil temperature
    • Release nutrient when decays
16.                  
    • high germination potatial
    • Froze from pest and disease
    • Give high yield
    • Free from weeds
17.                    
    • oxygen use for root growth
    • Nitrogen conveted to nitrate by organic used by plants
    • Faciliatate microbial activities
    • Reduce toxicity of some compounds
18.                
    • Nutrients contained
    • Mode of application
    • Time application
    • Effect on soil PH
19.            
    • Shallow weeding to the same depth
    • Use of heavy machines in the farm
20.                
    1.              
       • traditional storage
       • Modern storage
    2.                
       • A                                                      B
          -not well ventilated              -well ventilatd
          -weak                                  - strong
          -grass thatched                   - iron sheet thatched
           -not vermin proof               -vermin proof
    3.            
       • roof reparing
       • Replacing fallen doors
       • Re-nailing weak hungers
       • Keeping surrounding clean
21.                        
    1. staking
    2. N-wood/used to support the seedling
       M-thread/used to tie the seedling
    3.                
       • produce of dirty fruits
       • difficulties in spraying/harvesting
       • frequent attack by diseases eg blight
       • infestations of fruits by soil borne pests from soil
22.                
    1. Aerial laying/marcotting
    2. mangoes ,lemons ,oranges ,avocados
    3.                      
       • rooting medium should be moist
       • rooting medium should be rich in minerals/spores
       • rooting medium should be free from diseases causing spores