Free Nabteb Gce 2016 Agric Practical Answers – Nov/Dec Expo

1a)
A-sieve
B-files
C-harvesting Knife
D-sickle

1b)
i)it is used of separating of particles of different sizes
ii)it is used for sharpening and iron material
iii)it is used for harvesting grasses
iv)it is used for harvesting cereal crops

1c)
i)metal blade
ii)metal blade
iii)wooden handle
iv)wooden/metal handle

1d)
A-store in a cool dry place
B-Grease metal part after use
C-keep in a cool dry place
D-Wash and dry after Use
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2a)
plant spacing 60cm*90cm
Area spacing 60cm*90cm=5400cm^2
1 hectare=10,000m^2
hence 1 hectare=100,000,000cm^2
therefore 100,000,000/5400=18519
the population of maize planted is=18519

2b)
The population at 2 plants per stands is given as 18519*2=37037 maize plants

2ci)
50kg Npk – 1 hectare
Single stand maize per hectare=18519*50=925950k
Double stand maize per hectare=37037*50=18,51850k

2cii)
For a single stand maize =925950*3=2778850kg
For a double stand maize =1851850*3=5555550k
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3a)
1)wood ashes
2)straws
3)animal dungs
4)sea weed
5)Urine
6)Grasses

3b)
Compost is turned so as to add oxygen to the compost pile which is good for aerobic micro-organisms
Compost is turned so as to ensure that all the material are subjected to high internal to ensuring pathogen death.

3c)
6-12 months

3d)
-it improve soil fertility
-they help to increase soil fertility
-they help to increase microbial activities in the soil
-they facilitate the breakdown of nitrogen in the soil.

3e)
A-layer of grasses and legume + Animal Dungs
|
B
|
C
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4a)
P4=hence the soil is highly Acidic

4b)
1)high soil acidity affects the crop yield
2)it lead to deficiency of micro nutrients in Crops
3)it makes plant to have a stunted growth.

4c)
1)Planting of Cover crops
2)addition of liming materials

4d)
Liming is the process of applying of calcium and magnessium rich material to soil in various form to neutralize soil acidity and increase activity of soil bacteria

4e)
1)magnessium sulphate
2)quick lime
3)slaked lime
4)alum
5)calcim carbonate.
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