Phytophthora infection in Hawaii Leucaena variety trial.

Abstract

A trial was established in June 1978 at Waimanalo, Hawaii with 7 varieties of Leucaena leucocephala at 3 densities. A gummosis was noticed after 1 yr on scattered plants and, by Aug. 1979, the infection had spread and cankers were forming. Phytophthora drechsleri was identified as the cause. Mortality was rare, but one variety (K132) suffered death of the main stems and vigorous basal sprouting on 62% of all trees. Affected trees appeared to recover in autumn 1979.