Waec 2022 Agricultural science questions and answers

Waec 2022 Agricultural science questions and answers 


(1a)
(i) To safeguard farmers against unreasonable eviction
(ii) To ensure that agricultural land is not unnecessarily diverted to non-agricultural purposes
(iii) To make large tracts of land available for government-sponsored development of large scale farms
(iv) To carry out large scale improvement such as irrigation, drainage and soil water conservation

(1bi)
Mechanical power

(1bii)
(i) It can handle more areas per unit of time
(ii) It works faster and more efficient
(iii) It can perform a wide range of operation
(iv) It reduces cost of labor and total cost of production

(1c)
(i) Seed tube: They conduct seeds from feed cups to the furrow lines
(ii) Furrow opener: It creates a well-defined groove in the soil where the seed can be placed at the proper depth

(iii) Hopper: holds particulate matter or flow-able material of any sort
(iv) Seed metering device: to collect seed in a singular or group fashion
(v) Furrow wheel: To stabilize the plough and take side thrust

(1d)
(i) Plough
(ii) Cultivator
(iii) Harrow


(2a)

(i) Monocropping: The practice of growing a single crop year after year on the same land.

(ii) Mixed cropping: It involves the growing of two or more species or cultivars of the same species simultaneously in the same field.

(iii) Mixed farming: It is a type of farming which involves both the growing of crops and the raising of livestock.

(iv) Crop rotation: the practice of growing a series of different types of crops in the same area across a sequence of growing seasons.

(2bi)

Phosphorus deficiency

(2bii)

(i) Anhydrous ammonia

(ii) Ammonium sulfate

(iii) Superphosphate

(iv) Urea-ammonium nitrate

(2c)

(i) Wax

(ii) Propolis

(iii) Old brood comb

(iv) Pheromones

(v) Essential oil


(4a)
[TABULATE]

(i) =CROP=
ONION

=BOTANICAL NAME=
Allium cepa

=CLASSIFICATION BASED ON USE=
Spice Crop

=METHOD OF PROPAGATION=
Vegetative propagation

(ii) =CROP=
GINGER

=BOTANICAL NAME=
Zingiber Officinale

=CLASSIFICATION BASED ON USE=
Spice Crop

=METHOD OF PROPAGATION=
Cutting

(iii) =CROP=
JUTE

=BOTANICAL NAME=
Corchorus Olitorius

=CLASSIFICATION BASED ON USE=
Latex Crop

=METHOD OF PROPAGATION=
Seed

(4b)
Total area = 36×10
= 360m³
Space = 0.36m³
Number of broiler = Total area/Space
= 360/0.36
= 1000

(4c)
(i) It increases the nutrient level of the soil
(ii) It ensures balsnced ration for livestocks while grazing
(iii) It reduces cost of feeding livestocks
(v) It reduces the attack of pests


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