RESEARCH ON SOME TECHNICAL MEASURES OF in vitro CULTIVATION OF Melaleuca cajupti Powell IN HILLS AND SANDAL AREAS IN THUA THIEN HUE

Abstract

SUMMARY

Melaleuca cajupti Powell belongs to the Myrtaceae family and is a tree with medicinal value that is commonly grown in Thua Thien Hue province as a raw material for essential oil extraction. This study has determined the influence of factors such as density, pit size and amount of fertilizer on the survival rate, growth and development of in vitro Melaleuca trees grown on hilly and sandy soils in Vietnam. Hue. The analyzed results after 1 year of planting shows that the appropriate planting density in sandy and hilly areas is 10.000 trees/ha, hole size of 40 ´ 40 ´ 40 cm is suitable in hilly areas and in sandy areas the hole size is 30 ´ 30 ´ 30 cm. Applying Song Huong microbial fertilizer at a dose of 0.5 kg per hole in the hill area gives the best tree growth with a survival rate of over 90.0%, a top height of 141.1 cm, and a base diameter of 2.6 cm, canopy diameter over 72.0 cm and an average of 72.0 branches tree^-1; Meanwhile, in sandy soil areas, the best Song Huong biofertilizer formula at a dose of 1.0 kg hole^-1 gives a survival rate of over 89.5%, top height, base diameter, and canopy diameter with 60.0 cm, 0.84 cm, 31.5 cm respectively and have an average of 28.9 branches tree^-1.