Wednesday, 9 May 2012

WEAC AGRICULTURAL SCIENCE, THEORY, OBJECTIVE, QUESTIONS, AND ANSWERS-2012

Q1a)Explain what is meant by Subsistence
Agriculture.
b)Discuss briefly Interdependence of agriculture and
industry under the Following:-

i)tool, Implement, machinery Industries.
ii)Processing industries
iii)Agro-chemicals industries.
c). What is farm surveying??
Q71a)what is incubation in Poultry Production.

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2a)State 2 advantage& 2 disadvantage of natural
Incubation.
(b)List 4 factors thataffect pasture establishment in
west africa.
(c)In a tabular form, state the Causal organism and 2
symtoms of each of Following diseases of farm
animals.
i)Brucellosis
ii)Newcastle.
Q3.(a)State 4 characteristics of fartile Soil.
(b)Discuss briefly 3 Factors that affect land
availabilities for agricultural production in west africa.
(c)State 4 benefit of draining farm Land.
(d)List 2 sources of Soil Nitrogen.

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ANSWERS
1a) Subsistence agric is a type of agric that is
done on a small scale with minimum use of agro-
chemicals. The aim of the farmer is to provide
food for the family with little or no commercial
purpose. And the yields are low
7ia) Incubation is the process of keeping the
fertilized egg for a period of 5-7 days to keep
the egg warm. Within this period the embryo
develops into a baby bird.

2a) Advantages
-chicks hatched naturally tend to be more
robust
-It's easier since all the farmer does is to leave
the hatching to the mother hen
Disadvantages
-It's longer when compared to artificial
incubation
-not all the eggs are hatched
2b) water, temperature, water,quality of seed,
pathogens.
2c)Brucellosis
causative org:>bacteria
symptoms:> premature delivery, decrease in
conception rate
Newcastle
causative org:>virus
symptoms:>twisting of the neck, decrease in
feed intake,paralysis of the wings or legs,
respiratory difficulties.
3a)-it must contain all the essential nutrients
necessary for plant growth
-it must be well aerated
-it must be well drained
-It must not contain harmful microbes and
fungi.
3b)I'll list it. Just useyou head to explain it
land ownership system,social factors,economic
factors.
3c)-it makes the soilwell aerated
-it reduces soil temperature
-it supports the decomposition of organic
matters in the soil
-it reduces soil acidity.
3d) rainfall, nitrogen fixing bacteria,inorganic
fertilizers, animal manure

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OBJECTIVE ANSWER
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