ICECRD NEWS – Sunan candlenut ( Reutalis trisperma L.) is a member of the rubber-rubber (Eoforbia) family. Easily adaptable in several environments such as peat soil, sandy soil, clay soil, and ex-mining soil. This plant also grows well in soils with a low pH of <5 and is widely developed in the lowlands to highlands such as Sumedang, Garut and Tasik Malaya in West Java. The former tin mining area in Bangka, the former coal mining area in East Kalimantan, and the Batang Karang area on Buru Island. This plant grows very fast, at the age of 5 years it has reached a stem height of up to 3-4 meters, with a lush canopy.
Has the property of dropping leaves so that it can add organic matter in the soil, and 2-3 months later it will be lush again. At the age of 5 years, the kemiri sunan plant has also begun to produce, at 50 kg/tree/year, and will continue to increase according to age. At the age of 10 years, the production of kemiri sunan reaches 150 kg/tree/year or almost 13 tons/ha/year. At the age of 25 years, the plant will reach its peak production by producing 300 kg/tree or 28 tons/ha/year. The fruit kernel (flesh and seed) of kemiri sunan contains 56% essential oil, which has the potential to be used as a substitute for biodiesel as a substitute for diesel.
The Indonesian Industrial & Bevarages Crops Research Institute (IIBCRI), one of the UPTs within the Indonesian Center For Estate Crops Research and Development, the Research and Development Agency of the Ministry of Agriculture has tested biodiesel from Sunan candlenut oil by vehicle from Jakarta-Bali-Jakarta with very satisfactory results. One hundred percent biodiesel oil from kemiri sunan can be used as a substitute for diesel, not only for static engines but also for mobile engines such as four-wheeled vehicles. Sunan candlenut plants are also very long-lived (hundreds of years). At the age of 30 years, the diameter of the sunan candlenut can reach 2-3 meters, so it has the potential to become an increasingly scarce source of building wood.
The sunan candlenut plant has the potential to be used as a reclamation plant and has economic value. Sunan candlenut fruit does not need to be harvested, but will fall automatically when it is ripe. People can collect them and sell them to factories or collectors. This of course will have a positive impact on the community’s economy.
The fruiting period of kemiri sunan is about 4 months in a year, and the ability of people to collect seeds of kemiri sunan can reach 60 kg/working day. With a seed price of Rp. 2,000/kg, the income earned can reach Rp. 120,000/day for 4 months or Rp. 14,400,000,-. (Anjas)