Inventarisasi Karet ( Hevea brasiliensis ) pada Berbagai Ketinggian di Sumatera Utara

Abstract

NATANAEL SIMANJUNTAK : Inventory of Rubber (Hevea brasiliiensis) In the Different Altitude in North Sumatra . Under Supervised by BUDI UTOMO and AFIFUDDIN DALIMUNTHE. Rubber (Hevea brasiliensis) is one of the important agricultural commodity, both as a source of revenue, driving economic growth and preservation of the environment and biological resources. The purpose of this research is to inventory the distribution of rubber (H.brasiliensis) in North Sumatra in relation to climate differences and altitude. This study used a descriptive method of determining location based on the difference in height between 0-800 meters above sea level with the criteria that the village has a rubber plant where sampling method was done by Purposive Sampling which sampling deliberately chosen. The results showed that low productivity of smallholder rubber plantations in North Sumatra is mainly caused by the application of rubber technology and farm management are not as recommended. Rubber Development in North Sumatra with the extension in a cold climate region has the potential to increase the productivity of smallholder rubber such as is found in some villages which have cold climates Desa Martelu, Kecamatan Sibolangit with rubber areas of 10 hectares, Desa Parsikkaman, Kecamatan Adiankoting with rubber areas of 30 hectares, Desa Onan Hasang, Kecamatan Pahae Julu with rubber areas of 25 hectares, Desa Perdamean Nainggolan, Kecamatan Pahae Jae with rubber areas of 38 hectares, and Desa Simirik, Kecamatan Sipirok with rubber areas of 36 hectares.