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NABTEB 2018 Agric Science Answer Obj and Essay– May/June Expo

Verified NABTEB 2018 Agric Science ANSWER
Agric OBJ:
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(1a)
i)Animal Science
ii)Veterinary medicine
iii)Soil Science
iv)Crop Production

(1a)
Animal Science
i)It ensure a better productivity
ii)it helps to ensure meat and egg production

(1b)
Veterinary Medicine
i)it provide a better health management for farm animals
ii)it ensure the control of pests and parasites of farm animals

(1c)
Soil Science
i)it ensure the maintenance of soil facility
ii)it aids better soil classification and mapping

(1d)
Crop production
i)it helps in effective crop management practices
ii)it ensure optimum plant population
===============================

(2ai)
i)small farm holding, land fragmentation or land tenure system does not permit mechanization
ii) There are no access roads for machines
iii)It is costly or expensive to hire machines and most farmers are poor
iv)High running cost for machinery discourages mechanization
v)There is inadequate farm laboures of farm hands to enhance mechanization
vi)Unfavorable soil terrain or topography prevent mechanization

(2bi)
-It is mostly practiced by peasant farmers
-It involves small portion of land
-There is no specializations
-The returns or output are usually very low
-It usually involves family labour

(2bii)
-It involves the use of hired labour
-Records are kept
-Yield or output is usually high
-It involves huge investment of money or capture
-It involves the cultivation of large hectares of lard
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(3a)
i)Unpredictable breeding behavior or rabbits
ii)Inadequate sanitation and proper
iii)it is labour intensive
iv)lack of capital impedes large investment in rabbitry
v) inadequate supply and high cost of concentrates feeds
vi) high nest box mortality of litters

(3b)
i)coccidiosis
ii)enteritis
iii)ear canker
iv)ringworm

(3bii)
-passing of soft faces which may be blood stained
-high temperature
-brown scab inside the auditory canal
-circumscribed lesions on akin

(3biii)
-treatment of sick animals with coccidiostate
-appy appropriate drugs (antibiotics)
-use of miticides
-use of fungicide to cure lesions
==============================

(5a)
Land is the basis for agriculture and other rural land uses, encompassing soils, climate, vegetation, topography and other natural resources. In other words land is the upper most layer of the earth crust which agricultural and non agricultural activities take place.

(5bi)
Agricultural Land
-Example-
i)land for crop production
ii)livestock production

(5bii)
Non- Agricultural Land
-Example-
i)mining
ii)industry and factory use
=================================

(6a)
Weathering is the breaking down of rocks, soil, and minerals as well as wood and artificial materials through contact with the Earth’s atmosphere, water, and biological organisms.

(6b)
i)physical weathering
ii)chemical weathering
ii)biological weathering

(6ci)
-Physical Weathering-
i)wind- The force of wind carries along small pieces of soil which hit against the surface of parent rock causing it to disintegrate into smaller soil particles.
ii)water- Moving water or rain has a grinding effect against the surface of the parent rock. This causes the rock to disintegrate into smaller soil particles.
iii)man activities- moving activities or rain has a grinding effect against the surface of the parent rock. This causes the rock to disintegrate into smaller soil particles.

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(6cii)
-Chemical Weathering-
i)hydration- Soluble minerals in the rocks absorb water and expand weakening rock structures The rock becomes porous and eventually disintegrates into smaller soil particles
ii)hydrolysis- Water reacting with soluble minerals in the rocks loosening and breaking them into smaller particles.
iii)Oxidation- Reaction of rock minerals with oxygen to form oxide compounds which easily break up.


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1 comment

DONNY PELL May 15, 2018 at 10:02 am

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