2004 - WAEC Agriculture Past Questions and Answers - page 2
11
A disadvantage of using organic manure on the soil is that
A
it decreases the potassuim content of the soil
B
diseases spread fast
C
it increases the humus content of the soil
D
it reduces the rate of soil water evaporation
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12
Leguminous cover crops do not
A
bind the soil particles together through their roots
B
increaes the nitrogen content of soils
C
aid in improving the soil organic matter content
D
reduce the soil microbial population
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13
In the nitrogen cycle, nitrite is oxidized to nitrate by
A
nitrobacter
B
nitrosomonas
C
azotobacter
D
rhizobium
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14
Which of the following will not lead to loss of nitrogen compounds from the soil?
A
crop removal
B
burning
C
lodging
D
leaching
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15
Farm drainage does not lead to
A
improvement in soil structure
B
improvement of oil temperature
C
increased soil aeration
D
reduction of soil alkalinity
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16
Which of the following methods of irrigation is best for a farm with an undulating landscape?
A
sprinkler
B
flooding
C
furrow
D
basin
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17
The most unreliable source of farm power is
A
wind
B
water
C
electricity
D
machine
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18
Water power is harnessed and converted into electrical power by
A
blades
B
cranes
C
turbines
D
hovercraft
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19
A farm implement used for planting grains is the
A
drill
B
ridger
C
harrow
D
plough
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20
Which of the following parts of a tractor is most essential in operating a mower?
A
steering wheel
B
top link
C
power-take-off shaft
D
stabilizer chains
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