DESEMPENHO DE CINCO PROCEDÊNCIAS DE Grevillea robusta NO NORTE DO PARANÁ

Resumo

                               Abstract

Growth performance of Grevillea robusta provenances in northern Parana. Grevillea robusta, a native species of subtropical coastal areas of Australia, is successfully cultivated in several countries. It is recommended for planting in warmer regions of Paraná where it is the favourite species for intercropping with coffee. A trial established in Londrina County, Paraná state, aimed to compare growth performance in relation to different provenances of G. robusta. Among the tested provenances, there were four of them provided by CSIRO’s Division of Forestry and Forest Products and one provided by a local source, from Cianorte County, provided by Paraná State Environmental Institute. Ten years after field planting, wood volume produced by Australian provenances were 68.5%, 61.2%, 50.6% and 39.7% higher than that of the local seed source (respectively Boyd, Woodenbong, Wivenhoe and Emu Vale provenances). Wivenhoe provenance attained the highest height growth and Boyd provenance the best growth in diameter and volume. This suggests that productivity growth can be achieved by seed source replace.

Keywords: Grevillea robusta; provenance trial; tree plantings.