NABTEB AGRICULTURE SCIENCE

AGRICULTURE OBJ
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(1)
(i) Animal science
(ii) Veterinary science
(iii) Soil science
(iv) Crop production

(a) Animal science:
(i) It ensures the efficient and effective management of farm animals
(ii) It ensures a better animal productivity
(iii) It helps to ensure meat and egg production

(b) Veterinary medicine:
(i) It provides a better health management for farm animals
(ii) It ensures the control of pest and parents of farm animals

(c) Soil Science:
(i) It ensures the maintenance of soil fertility
(ii) It aids better soil classification and mapping

(d) Crop production:
(i) It helps in effective crop management practices
(ii) It ensures 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)
(i) It is mostly practiced by peasant farmers
(ii) It involves small portion of land
(iii) There is no specializations
(iv)The returns or output are usually very low
(v) It usually involves family labour

(2bii)
(i) It involves the use of hired labour
(ii) Records are kept
(iii) Yield or output is usually high
(iv) It involves huge investment of money or capture
(v) It involves the cultivation of large hectares of lard

(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)
(i) passing of soft faces which may be blood stained
(ii) high temperature
(iii) brown scab inside the auditory canal
(iv) circumscribed lesions on skin

(3biii)
(i) treatment of sick animals with coccidiostate
(ii) appy appropriate drugs (antibiotics)
(iii) use of miticides
(iv) use of fungicide to cure lesions

(5)
(a) land may be defined as the uppermost layer of the earth crust in which Agriculture and non – Agriculture activities are carried out. It is also the solid part of the earth surface which has as its components water, air, soil, rock, minerals, nature vegetation and animal of life and it is suitable for agriculture production

(5b)
– Agriculture land example are:
(i) land for crop production
(ii) livestock production

– Non – Agriculture land example are:
(i)industrial or factory use
(ii) mining

(6a)
Weathering is defined as the gradual breaking down or disintegation of rocks by either physical (mechanical) or chemical process.

(6b)
(i) physical or mechanical weathering
(ii) chemical weathering
(iii) biology 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.

(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.