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2009 WAEC Agricultural Science Theory  (a) State four aims of crop improvement. [4 marks] (b) Give four conditions necessary for...

Agricultural Science
WAEC 2009

 (a) State four aims of crop improvement. [4 marks]

(b) Give four conditions necessary for seed germination. [4 marks]

(c) State the importance of conducting a germination test. [2 marks]

(d) Discuss briefly three problems associated with the use of poor quality planting materials. [6 marks]

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Explanation

(a) Aims of crop improvement are
 - increase the quality of crops
-Increase the quality of produce/improve nutritional value of produce
- Meet the need of growers and consumers/improve harvesting qualities. 
-Adapt to climatic conditions.
- Increase resistance to diseases. 
-Increase resistance to pests. 
-produce crops that mature early. 
Produce crops with uniform agronomic characteristics. 

(b) Conditions necessary for seed germination
- Temperature/suitable temperature/optimum temperature 
- Air/Oxygen Moisture/Water/Rainfall 
-Viable seed 

(c) Importance of conducting a germination test 
-To assess the viability of the seeds.
- To determine seed rate 

(d) Problems associated with the use of poor quality planting materials 
- It may lead to uneven germination and establishment which will eventually require replanting. 
-Seedings may be weak or feeble thereby predisposing them to mechanical damage, disease infection and if pest attack. 
- It requires grading and disinfection of the planting material against seed borne pests and diseases. 
-Extra costs are incurred in purchasing more planting materials. 
-Uneven plant growth. 
-Uneven growth may lead to uneven maturity. This will lead to haphazard nature of harvesting. 
-Marketing of produce is affected by uneven maturity n and harvesting. ▪
-Poor quality produce is harvested. •
-Processing is affected due to the unequal sizes of the produce. 
- Yield is reduced/poor. 


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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free