Pests and diseases associated with Eucalyptus in Kenya

Abstract

Eucalyptus trees are widely grown in the tropics having been introduced from Australia. They are fast growing and can adapt to a wide range of environments. Eucalyptus trees were introduced in Kenya early in the last century. In 1997 Eucalyptus hybrid clones were introduced in Kenya from South Africa and performance trials were set up in various sites. The trials have regularly been assessed and monitored for incidence of pests and diseases.Fromthese surveys the major insect pests found were Blue gum chalcid (Leptocybe invasa), which is a new pest of eucalyptus in Kenya, Snout beetle (Gonipterus scutellatus) and termites. Among the diseases the major ones were Botryosphaeria canker and Mycosphaerella leaf disease. These pests and diseases could be a major problem when establishing Eucalyptus plantations in Kenya. Other pests and diseases were also found but are considered to be of minor economic importance. The surveys carried out so far indicate that there is need to continue monitoring of pests and diseases especially due to the increased planting of Eucalyptus in the country.