The growth and yield of Calliandra Callothyrsus trees as biomass-based energy feedstock

Abstract

Abstract Calliandra callothyrsus is a woody plant that grows quickly and well in a wide range of natural conditions. C. callothyrsus is a tree species which easily cultivated and can be harvested in a short time (short-rotation wood crops). However, information about time and harvesting techniques that explain harvesting biomass is still needed. The aimed of this study is measured growth after trimming, the best time interval for harvesting and the results of cutting both biomass and the heating value contained. The method used is a destructive method. Observations are carried out repeatedly in a permanent plot. The permanent plot as treatment level cutting. So, this study evaluated the correlation between time and cutting level to growth and biomass harvested. The results showed that the best cutting limit was 50 cm above ground level. It is due to the high harvest biomass and the number of new stems that grow more. Meanwhile, to ensure business sustainability, the best harvest interval is 1 year. It will ensure adequate growth of new stems, large harvesting biomass and high calorific value of harvest. Harvesting potential can reach 25 m3.ha-1.yr1. While the heating value will be at an interval of 3016 - 3757 kcal.kg−1.