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Measures taken in controlling pests

Answer Text:
Measures Taken in controlling pests
(i) Bush Clearing
- Selective clearing of bushes was applied to prevent soil degradation.
- Caused tsetse fly to lack a place to breed and killed adult flies and pupae due to low humidity.
(ii) Bush Spraying
- Spraying from the ground or from a low flying aircraft.
- Doesn’t affect other organisms.
(iii) Sterilisation males
- Making the insect unable to reproduce by obstructing its reproductive organs.
-Luring the male flies to some chemical substance which sterilises them.
-When they mate with the females fertilisation doesn’t occur which reduces insect population.
(iv) Traps
-Square of black cloth coated with glue on which the insects stick.
-Traps impregnated with insecticides which kills the insects.
(v) Creation of Buffer Zones
-Belt of 5 km wide with dense cultivated vegetation to create barrier which the fly couldn’t cross.
(vi) Killing of the Hosts
Wild animals which the fly fed were selectively hunted and killed.