GROWTH AND YIELD OF acacia hybrid CLONES ON EMBANKMENT IN LONG AN PROVINCE

Abstract

Acacia hybrid was introduced to plant in Long An province later than other provinces in the Mekong Delta. Due to hydrological characteristics affected by flood season, this species is mainly grown on the embankment, canal banks and some areas is not affected by flood. In order to give appropriate recommendations by choosing of acacia hybrid clones with high growth and yield for plantation, this study conducted a trial of selected acacia hybrids, combined with comparison with mass varieties practising in the local. The results showed that, after 2 years of planting, the survival rate was significantly different between the control and the remaining treatments, the lowest was the control treatment (81.5%) while the remaining clones were all greater than 95%. The growth parameters D1,₃, Hvn ,V and yield of the trial clones were significal differences and divided into 3 separate groups: The lowest was in the control, followed by the group of 4 clones: VC01, VC02, VC03, AH1 and the best are the clones of VC04 and AH7. With the above results, planting acacia hybrid on canal banks, embankments or scattered planting in Long An and in the other areas with similar conditions, and it is recommended to use AH7 clone or others which is equivalent growing characterictics to improve productivity and quality.