2019/2020 NECO PRATICAL AGRICULTURAL SCIENCE EXPO RUNZ-ANSWERS

EXAMHOT PRATICAL AGRICULTURAL SCIENCE ANSWERS.

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(1a)

SPECIMEN A – Knapsack sprayer
SPECIMEN B – Hand fork
SPECIMEN C – Head pan
SPECIMEN D – Ranging pole

(1b)
(i) To get rid of leftover chemicals
(ii) To aid the easy flowing of the chemicals from the nozzle
(iii) To prevent it from rusting

(1c)
(i) Pulverizing the soil
(ii) Aerating the surface of the soil
(iii) Transplanting of seedlings

(1d)
(i) Metal surface
(ii) Metal handle
(iii) Hollow surface for loading

(1e)
(i) Store in a cool dry place
(ii) Clean thoroughly after use

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(2a)
E-It is a wood ash
F-It is a urea fertilizer

(2b)
E-Lime material/potash
F-Nitrogen

(2c)
Specimen E
(i)Lime
(ii)Quick lime
(iii)Potassium

Specimen F
(i)N.P.K fertilizer
(ii)Nitrate fertilizer
(iii)Manure

(2d)
(i)It is used to improve sandy soil
(ii)It is used to reduce or neutralize soil acidity

(2e)
(i)It may increase soil acidity
(ii)It can cause damage to plant
(iii)It can increase soil salinity

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(3a)
SPECIMEN G – Cowpea seeds
SPECIMEN H – Banana fruit

(3b)
Grain weevils

(3c)
G – Leguminous crop
H – Fruit

(3d)
G – Sexual propagation
H – Asexual propagation

(3e)
Specimen G
(i) Vigna unguiculata
(ii) Cercospora leaf spot

Specimen H
(i) mycosphaerella leaf spot
(ii) Black sigatoka

(3d)
Specimen G
(i) Drying
(ii) Storing

Specimen H
(i) Packing
(ii) Storing

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(4a)
I-Poultry droppings
J-Tilapia fish

(4b)
(i)It can cause algae boom
(ii)It prevents the penetration of lights into the water body
(iii)It can reduce the oxygen content
(iv)It causes pollution of the water body

(4c)
(i)It can increase the soil nutrients/organisms
(ii)It is used to feed livestocks eg cattles
(iii)It is used to replenish lost soil nutrients

(4d)
(i)Improper refuse/sewage disposal
(ii)Dumping of contaminated items

(4e)
(i)Source of food to the farm animals
(ii)It improves soil nutrients
(iii)For production of fertilizers

(4f)
(i)Regular changing of water
(ii)Regular sanitation
(iii)Avoidance of feeding the fishes with high proteinous feeds
(iv)Regular/Early harvesting

(4g)
(i)Smoking
(ii)Salting
(iii)Drying
(iv)Refrigerating

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