RESULTS OF RESEARCH FOR ASEXUAL PROPAGATION OF Calophyllum inophyllum BY CUTTINGS

Abstract

Calophyllum inophyllum is multi-purpose and economically valuable to tropical coastal areas, often planted as a roadside tree to provide shade and as wind breaks, provides fruit-pressed oil used in medicine, this wood can also be used in shipbuilding. The objective of the study was to determine the best type, concentration of growth regulators and the best season for Calophyllum inophyllum cuttings. The study used cuttings taken from 1-year-old seed trees collected from selected dominant trees planted in the material garden of the South Eastern Forest Research and Experimental Center. The results showed that the growth regulator IBA with the concentration of 1,500 ppm gave the best results with survival rate: 97.5%, rooting rate: 93.9%, average number of roots/cutting: 7.9 roots and the rooting index was 38.7. The season of cuttings had a significant effect on the survival rate and root quality parameters of Calophyllum inophyllum cuttings (P-value < 0.05), the indexes when cuttings in the dry season increased from 1.01 to 1.2 times compared to the rainy season.