Natural Growth Model of Amorphophallus gigas from Simandiangin Hamlet, Sungai Kanan District, North Sumatra

Abstract

Amorphophallus gigas is a plant belonging to the Araceae family, including the tallest flower in the world. A. gigas was often found in North Sumatra, grows naturally under agroforestry stands. The aim of this research was to calculate the population of A. gigas and predict the population of A. gigas in the future assuming the habitat is not disturbed. This research was conducted in Simandiangin Hamlet, South Labuhanbatu Regency, North Sumatra Indonesia. The method used is to count the number of A. gigas individuals in 1 hectare by census. From the research results, there were 92 Amorphopallus gigas individuals with various growth phases, 40 seedlings, 28 juveniles and 26 adults. The average seedling height is 7.52 cm, the average seedling diameter is 0.27 cm, the average number of leaves is 7, the average canopy width is 27.27 cm. The average height in the juvenile phase is 56.88 cm, the average diameter is 1.40 cm and the canopy width is 76.2 cm. The average height in the adult phase is 151 cm, diameter 5.36, number of leaves 132 and canopy width 199.08 cm.