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1) a. Sieve
b. (i) For the separation of different soil particles
(ii) ¶ store in cool dry place
¶ wash and clean after use
¶ oil or grease regularly
1(c) i) clay
ii) silt
iii) sand(fine)
iv) gravel(coarse sand)
d). (i) The soil is acidic
(ii) ¶ wood ash
¶ limestone
¶ slags
¶ water
¶ dolomite/calcite
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2)
a) Disc plough
b) I – Furrow wheel
II – Beam
IV – Disc Scraper
V – Disc
c) ¶ *Furrow wheel* – Used for stabilising the rear end of the plough and for guiding the direction of the plough.
¶ *Beam* – Used for holding discs in position or for attachment.
¶ *Standard*- It holds the disc firmly to the beam
¶ *Disc Scraper*- Used for removing mud from the disc
¶ *Disc*- For tilling the soil
d) For tilling the soil where crops are to be planted
e) ¶ clean or wash and dry after use
¶ repair or replace faulty parts
¶ grease joints and parts
¶ keep away from rain to avoid rusting
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3a)
I – Tassels (male flowering part)
II – Silk (female flowering part)
III – Ear/husk
IV – Leaf
V – Stem
b) Direct seeding
c) ¶ Threshing
¶ Winnowing
¶ Sieving
d) maize picker/harvester
e) ¶ Black bundle disease
¶ Black/brown spot disease
f) ¶ Use of tolerant/resistant varieties
¶ crop rotation
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4a)
I-liverfluke
II-fowl tick
4b)
-it leads to loss of blood.
-it causes liver rot
-it obstructs the bile duct
-it may result in death
-it lead to digestive disturbance
4c)
Cattle
Sheep
Goat
4d)
-tick fever
-heart water diseases
-anaemia
4e)dipping of the animal.
-animals should be kept in a clean surrounding.
-ticks should be hand picked from the body of the host animal
-practice rotational grazing or paddocking
-animal bedding should be changed regularly.
Mr class cares
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