| Abstract: |
The fruit of the screw tree (Helicteres isora) (‘kayu ules’ in Indonesian; ‘usak ne’o in the local language) is used for medicine (‘jamu’). This plant is a shrub species that grows to 4 m, with 9–12 stems. The fruit consists of five follicles that form spirals. The young fruit is green and, when mature, brown. The length and diameter of the mature fruit is 55.95 mm and 7.22 mm on average, respectively, with 55.29 mm of fruit stem.
As a medicinal plant, screw tree has an economic value with the potential to be traded. Given its importance, improving productivity is the key to acquiring an optimum result. Research has undertaken to obtain information on how different pruning techniques under different light conditions influence fruit productivity of the screw tree. The research was carried out in the tree’s natural habitat in Bosen Village, Soe District, East Nusa Tenggara Province. |
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