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Aspekte van die biologie van tuinduiwe (Columba livia) in die Bloemfonteinse stadsgebied
(University of the Free State, 2007-05)
English: Owing to the increase of complaints in the city of Bloemfontein concerning the damage being caused to buildings by birds, different aspects of the biology of feral pigeons (Columba livia) was investigated. Close ...
Parasitoids and aphid resistant plants : prospects for Diuraphis noxia (Kurdjumov) control
(University of the Free State, 2007-11-03)
English: Host plant resistance and biological control by means of natural enemies are becoming more favourable as high potential alternatives for chemical control of insect pests. Tritrophic studies (plant–herbivore-natural ...