Efficient Exploitation System in Rubber (Hevea brasiliensis Muell. Arg) Clone PB 260 Plantation in Simalungun Sumatera Utara Indonesia

Indonesia as a producer of natural rubber is still below Thailand, which has an area smaller than Indonesia.This is because Indonesian rubber plantations are dominated by smallholder rubber plantations whose exploitation systems do not comply with regulations.Therefore, the aim of the research was to increase the productivity of the PB 260 clone through the length of the half-spiral (S2) and quarter (S4) tapping grooves and the administration of liquid stimulants.This research was carried out at Afdeling II PT.Perkebunan Nusantara III Kebun Bandar Betsy, Bandar Huluan II District, Simalungun Regency, North Sumatra.Non Factorial Randomized Block Design Research Method as a combination treatment of an exploitation system with two levels (S2) and (S4) and administration of liquid stimulants repeated three times.The research results showed that S4 treatment had a higher latex yield than S2.The treatment given did not affect the physiology of latex clone PB 260 and was still within optimum limits.S4 treatment was more efficient in increasing the latex yield of 16-year-old PB 260 clones.