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Friday March 29th 2024

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[Waec Answer] Waec 2018 Agricultural Science Objective And Theory Questions And Answers Now Posted For Free

AGRIC. ANSWERS


Agric Science Obj and Theory Questions And Answers.

AGRIC OBJECTIVE:

1-10: ACCADBDDBB

11-20: DDAABACBBA

21-30: CDCCADDDBA

31-40: BDDAACDDCD

41-50: CCBACBBBCC

AGRIC THEORY

(1ai)
Basic Ammenities:
-It makes able bodied me to migrate from rural to urban areas in search of job

-Poor processing facilities for farm produce

-Shortage of water for irrigation purposes for all season cropping

-Poor health services reduces the productivity of farmers

(1aii)
Farm inputs:
-Available farm inputs are of inferior quality, outdated and crude

-Farm inputs like chemicals, fertilizers, tools and implements are grossly inadequate

-Modern farm inputs are not produced in Nigeria

-Farm inputs are expensive to buy and maintain

(1bi)
Tractor:
-Used for drawing farm implements like plough,harrows,ridgers etc

-It has hydraulic control system which aids the lifting of coupled implements

-It can be used to carry harvested crops or other farm products from the farm to the market

(1bii)
Buldozzer:
-For bush clearing

-For felling trees and stumps

-For levelling ground

(1c)
-Service at regular interval

-Replace worn out or weld broken parts

-Adhere strictly to manual or manufacturer’s instruction

-Routine and regular changing of oil
=====================

2a)
i)Water is essential for the process of photosynthesis.

ii)Water also help to maintains the turgidity of plant.

iii)Water protects plant from adverse condition like drought, frost etc.

iv)Water serves as the solvent and carrier of food nutrients for the growth of plants.

2b)
i)Nitrate leaching

ii)the export of alkalinity in produce.

iii)Parent material – type of rocks from which the soil developed.

iv)Rainfall – soils under high rainfall conditions are more acid than soils formed under dry conditions.

v)Soil organic matter – soil organisms are continuously decomposing organic matter.

2c)
Adult fluke lay eggs that are passed out onto pasture in the faeces. the egg, hatches and migrates in thin films of moisture, actively seeking the snail host. Within the snail they undergo two further developmental stages, including multiplication, eventually becoming infective cercariae, which emerge from the snail when the temperature and moisture levels are suitable. The cercariae migrate onto wet herbage, encystingas metacercariae, the highly resilient infective stage of the liver fluke. Following ingestion, the young flukes migrate to the liver, through which they tunnel, causing considerable tissue damage. The infection is patent about 10-12 weeks after the metacercariae are ingested. The whole cycle takes 18-20 weeks. 3ai)
Loamy soil is the type of soil that has moderate water infiltration and retention abilities good for cassava growth.

3aii)
i)Clear land of all grass, brush and trees
ii)Plough, rotovate and ridge
iii)Apply limestone at 2-4 t/ha before rotovating
iv)Form ridges 1m apart and 25-40 cm high

3aiii)
Cassava is propagated by cuttings, by planting pieces of stem.

3aiv)
Setts are planted 50 cm to 90 cm on the ridge at a 45o angle leaving 2-3 nodes above ground.

3av)
Use a contact and/or pre- emergent herbicide to control weeds for the first three months of growth (vegetative stage). Hand-weeding using hoes are normally recommended after 3 months, if necessary, since the enlarged crop canopy should limit weed growth after 3 months.

3avi)
When soil tests are not done, a general recommendation for fertilizing cassava can be: a. NPK (12:24:12) applied at the rate of 336 kg/ha at 6 weeks after planting followed by 16:8:24 at 16 weeks after planting

3avii)
Cassava matures between 8 to 12 months after planting. Cutting back plants 2 weeks before harvesting should cause tubers to mature and increase yields by 10%. Do not weed before harvesting.

3aviii)
The storage method include its use in the productions of garri, farinha, attieke, cassava bread, chips, cassava powder

3bi)
coccidian protozoa
3bii) Cattle
3biii) Diarrhea
3biv) Use of anticoccidial drugs
3bv) Virus
3bvi) Cattle
3bvii) fever,
3bviii) by strict quarantine and slaughter

=======GOODLUCK======


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Comments:
[71months ago] Sovite :

Tanks


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