1993 - WAEC Agriculture Past Questions and Answers - page 2
11
Which of the following is not a way of maintaining soil fertility?
A
cover cropping
B
manuring
C
mulching
D
mixed farming
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12
A soil with the PH range of 6.1 to 6.9 can be described as
A
alkaline
B
very acidic
C
slightly alkaline
D
slightly acidic
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13
Which of the following statement is not correct about micronutrients? They
A
are required in small quantities by plants
B
are harmful when present in large quantities in a soil
C
are derived from the parent rocks
D
are the most abundat elements in plant leaves
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14
A soil which consists of a mixture of and, silt and clay in equal quantities is described as
A
humus
B
alluvial soil
C
sandy clay
D
loam
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15
Which of the following processes will not lead to the loss of nutrients from the soil?
A
erosion
B
mulching
C
harvesting
D
burning
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16
The physical properties of soil include the following except
A
bulk density
B
colour
C
moisture content
D
porosity
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17
Which of the following problems will not be considered before installing irrigation equipment in a farm?
A
high cost of equipment and maintenance
B
concentrartion of salt
C
source of power
D
availability of water
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18
Which of the following is the source of energy used by green plants for photosynthesis?
A
electricity
B
water
C
wind
D
sun
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19
One of the limitation of machanization of farms is
A
reduction in the cost of production
B
exposure of soil to the effects of climate
C
increase in yield of crops
D
reduction of farm labour
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20
Which of the following farm operations cannot be mechanized?
A
weed control
B
fertilizer application
C
transportation and handling
D
seed-germination
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