Evaluasi pertumbuhan tegakan Jati Unggul Nusantara (JUN) berdasarkan kondisi wilayah penanaman di Pulau Jawa

Abstract

Jati Unggul Nusantara (JUN) is a genetically modified teak which has a faster harvest rotation than another variance of teak that in 5 years, stands can gets an average diameter of 20 cm. The purposes of this research are to evaluate the growth of JUN based on growing environmental conditions and to estimate JUN dimensions outlook based on rotation age. This research was conducted at three sites representing JUN stands on Java, which is Bogor regency representing West Java, Kulon Progo regency, Yogyakarta represent Central Java, and Ngawi regency represent East Java. The results showed that JUN stands in Ngawi, East Java has the fastest growth than all research sites however the average diameter of 5 years JUN stands on all sites are no one which up to 20 cm. The main issues of the final results that did not appropriate the target are poor seeds quality from seedbed and poorly field managements.