2003 - WAEC Agriculture Past Questions and Answers - page 2
11
Which of the following soil properties cannot be easily altered?
A
structure
B
consistency
C
texture
D
fertility
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12
A soil with low pH value can be improved by the addition of
A
ammonium sulphate
B
calcium carbonate
C
sodium chloride
D
sodium nitrate
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13
What is the percentage water content of a soil sample which weighed 180g when fresh and 120g when oven dried?
A
66.7%
B
60.0%
C
15.0%
D
33.3%
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14
Nitrogen may be lost from the soil through the following processes except
A
crop removal
B
soil erosion
C
leaching
D
irrigation
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15
Nitrogen deficiency in plants can lead to the following except
A
stunted growth
B
excessive growth
C
lower protein content of crop products
D
general yellowing of leaves
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16
Which of the following is not a principal of crop rotation?
A
deep-rooted crops should be followed by shallow rooted crops
B
a period of fallow must be provided in the cours of the rotation
C
a leguminous crop should be included in the system
D
crops that can be attacked by the same pest should not follow each other
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17
The most efficient irrigation method on large scale farms involve the use of
A
overhead irrigation facilities
B
flooding system
C
underground porous pipes
D
shadoof system
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18
The farm machinery that does not have the heat engine is
A
tractor
B
bulldozer
C
mower
D
combin drill
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19
What is the main use of a gunter's cabin?
A
taking measurement of distance
B
determining the depth of soil moisture
C
calculating the slope of the land
D
restraining bulls
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20
The main reason why the disc plough is preferred over the mouldboard plough for use in heavy soils is that
A
the scraper removes any adhering mud
B
it is lighter and so gets stuck easily
C
its frame is made of stainles steel
D
it buries weeds mor effectively
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