Pests and management of exotic and native species plantations in the humid forests of Tropical Africa | Forestry in a changing political environment: challenges for the 21st century
1997
Cobbinah, J. R. | Mushove, P. | Mubaiwa, M. | Mukwekwerere, M. | Pfukwa, C.
The high rate of deforestation coupled with the ever increasing demograghic figures are some of the major factors contributing to the forest plantations in the humid forests of Africa. Insect pests are known to interfere with forest management objectives and there is evidence that plantations, unlike natural forests are at higher risks of insect damage. Although the general area under plantaion in the humid area is less than 10%, potentially serious pest problems are indicated.Pests such as Phytolyma lata, Hypsipyla robusta and lamprosema lateritialis have limited the establishment of valuable native species such as iroko, African Mahoganies and Afrormosia, tespectively. The Cypress aphid Cinara cupressi and Leucaena psyllid, Heteropsylla cubana have also had devastating effects on exotic-pines and Leuceana. The ecological implications to the broader issue of why pests occur in plantations and not natural forests and why exotic species are more prone to attack than native tree species are discussed.
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