(a) Explain briefly two types of soil water. (b) State four management practices carried out...
AGRICULTURE
WAEC 2018
(a) Explain brieflytwo types of soil water.
(b) Statefour management practices carried out during the brooding of chicks.
(c) Complete the table below on diseases of farm animals.
Disease
Causal organism
Vaccine/drug administered
Marek’s disease
(i)
(ii)
(iii)
(iv)
NDV La Sota
Coccidiosis
(v)
(vi)
Anthrax
(vii)
(viii)
Explanation
(a)Explanation of types of soil water
Gravitational water
This is soil water held in macropores especially when the soil is saturated and drains out of the soil by gravity. The water is unavailable for plant use.
Capillary water
This is water that is held by forces of surface tension in continuous films around soil particles in the capillary/micropores. It is available for plant use.
Hygroscopic water
This is soil water that is held tightly to the surface of soil particles by adsorption forces. It is very difficult to extract this water and is unavailable for plant use.
(b)Management practices carried out during the brooding of chicks
Sexing of chicks into male and female - Feeding
Sorting out abnormal chicks - Provision of water
Drying of chicks immediately after hatching - Sanitation
Intra-ocular NDV vaccination/vaccination - Drug administration
Provision of well-ventilated housing - Record keeping
Provision of warmth - Deworming
(c )Completion of the table on diseases of farm animals
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