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Pest Control
Insect pests and infestations can destroy the crops of whole communities. Dr Simon Leather of Silwood Park in London describes the mains types of pests and the damage they do to plants.
This is a programme from the 大象传媒 World Service Archive and was originally broadcast in 2001.
大象传媒 World Service Archive
This programme was restored as part of the World Service archive project
