Expo: Free Nabteb 2015 Agric Science Practical Answers -

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NABTEB AGRIC PRACTICAL ANSWERS

3a.
D - maize grain (damage) by weevil
E - Kolanuts (damaged) with fungus
F - Tomato fruit attack by bacteria


3b. method of controlling
E - Spray with fungicide
- use resistant varieties
- Apply regular weeding Method of controlling
F – Avoid infected soil
- Practice crop rotation
- Use resistance varieties

3c. Economic Importance
- It reduces qualities of the products
- It reduces their market values

3d. D – Weevil
E – Fungi
F - bacteria wilt

3e. Effects
- Poor growth
- Death
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1a.
A - N.P.K fertilizer
B - Clacium Carbonate
C - Poultry Manure

1b. B- Carbon, Calcium, and Oxygen (c,ca,o) C - Carbon, oxygen, nitrogen, hydrogen (C,O,N,H)

1c. A (N K fertilizer) is an artificial fertilizer of inorganic manure WHILE C (poultry manure) is a natural fertilizer of organic manure

1d. (i) Crop production
- It reduces or neutralise soil acidity
- for tissue develpoment in plant
(ii) fish pond production
- source of calcium for bones development
- reduces turbidity in fish ponds

1e. Methods
- Ring method
- Side placement
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2a.
G - calopogonium mucunoides
H - Elephant grass

2b.i. Cilamtic factords e.g sunlight
ii. soil or edaphic factors e.g topography

2c. Pasture

2d. G - calopogonium mucunoides
H - Elephant grass it is a widely distributed pasture gas throughout the rain forest zone. it is erected and of about 3-5m tall. it is a highly leafy and aggressive gras.
G - calopogonium mucunoides - it is yellowish or reddish - brown in colour - it has dansely polise stems

2e. Planting them together raises and improve productivity

2f. By allowing it to dry-up and cut them and tie them for silage making.
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4a.
I - granite
J – Mable
K - sandstone

4b.
I - igneous rocks
J - metamorphic rocks
K - sedimentary rocks

4c. I - igneous rocks (granite) are formed by the cooling and solidification of molten rocks called magma ejected from beneath the earth's crust.

4d. I - Granite is used in the flooring and space of farm animal to raise animals
J - marble, animals feed on mable
K – sandstone
- serves as food for farm animal

4e.i. carnivorous animal e.g dog
ii. herbivorous animal e.g cow

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