Cacao Carbon Stock Under Different Year (5,10,15) Cacao Farmer Plantation Tomoni Beringin Jaya Village East Luwu South of Sulawesi
Nahdia (a*), S A Paembonan (b), Nasaruddin (c)

a) Environmental Science of Graduate School of Hasanuddin University, Makassar, Indonesia.
*nahdia[at]pasca.unhas.ac.id - nnahdia[at]gmail.com
b) Laboratory Silviculture and Plant Physiology Forestry Faculty of Hasanuddin University, Makassar, Indonesia.
c) Laboratory Plant Physiology Agriculture Faculty of Hasanuddin University, Makassar, Indonesia.

Abstract

This study aims to determine cacao carbon stock based on the conditions of cacao farmers plantation at Tomoni Beringin Jaya Village East Luwu South Sulawesi. Carbon stock estimated aboveground biomass and belowground biomass using allometric methodology, were carried out at cacao field farmer with sampling intensity 30% cacao field at 5 year (n = 214), 10 year (n=229) and 15 years (n=329), soil sampling disturb (measure soil organic carbon), undisturb (measure bulk soil bulk density) and soil bulk density at depth 0-10 cm and 10-20 cm. Carbon stock cacao aboveground biomass at the age of 5 years (M45) was 1.89 ton C ha-1 and belowground biomass was 0.56 ton C ha-1 with proportion 77.19%:22.81%. Carbon stock cacao aboveground biomass at the age of 10 year (BR25) was 3.66 ton C ha-1 and belowground biomass 1.01 ton C ha-1 with a proportion 78.37%:21.63%. Carbon stock cacao aboveground biomass at 15 year (BR25) was 4.58 ton C ha-1 and belowground biomass of 1.21 ton C ha-1 with a proportion 79.07%:20.93%. Cacao carbon stock at 5 year, 10 year, and 15 year respectively increased, nevertheless mean annual carbon stock cacao decreased in 5 years cacao aboveground biomass was 0.37 ton C ha-1 and belowground biomass 0.11 tonCa-1. Carbon stock cacao 10 year aboveground biomass 0.36 ton C ha-1 and belowground biomass 0.10 ton C ha-1. Carbon stock cacao 15 year aboveground biomass 0.30 ton C ha-1 and belowground biomass 0.08 ton C ha-1. Soil organic carbon showed dynamic under different year cacao plantation. Soil organic carbon in cacao plantation age 5 year was 0.031 tonCha-1, cacao plantation age 10 year was 0.034 ton C ha-1, and cacao plantation age 15 year was 0.043 ton C ha-1.

Keywords: Cacao, carbon stock, above ground and below ground biomass, soil organic carbon

Topic: Sustainable Development