Provenance-type Trials of <i>Eucalyptus Camaldulensis</i> and <i>E. Tereticornis</i> in South Africa and South-West Africa: Eight-year Results
Аннотация
SYNOPSIS Nine composite trials of E. camaldulensis and E. tereticornis were planted in South Africa and South-West Africa during 1973 and 1974. Forty-nine seedlots of both species were included in this series of trials. In the more humid areas E. tereticornis consistently outperformed E. camaldulensis in growth and stem form quality, but was inferior to E. grandis where those two species existed side-by-side. In the dry to arid areas and where heavy frosts occur E. camaldulensis was superior in survival and growth to E. tereticornis, although neither showed satisfactory development. The use of irrigation or access to abundant sub-surface water is essential for the development of either species in semi-arid or arid areas. Recommendation are made as to which provenances of either species should be chosen for planting in the different climatic zones of South Africa and South-West Africa.