The Effect of Compost Application on Soil Fertility Parameters and Cocoa Productivity Muthmainnah (a*), Laode Asrul (b), Rusnadi Padjung (b), Kurniawan (b), Utari Eka Setiani (b)
Faculty of Agriculture, Hasanuddin University
Jl. Perintis Kemerdekaan KM.10, Tamalanrea Indah, Kec. Tamalanrea, Kota Makassar, Sulawesi Selatan 90245, Indonesia
Abstract
Cocoa is one of the plantation crops that has an important role in the national economy whose production has decreased due to ineffective treatment of plants. One thing that can be done was the addition of organic material by composting effectively. This study aimed to determine the effect of Cocoa husk compost application on soil fertility and cocoa productivity. This study was conducted in Gantarangkeke Village, Gantarangkeke Sub-district, Bantaeng Regency, South Sulawesi Province and took place from March to September 2020. This study used a randomized block design as its environmental design. Compost application consists of 5 levels, namely control (0 kg/tree), (2.5 kg/tree), (5 kg/tree), (7.5 kg/tree), (10 kg/tree). The results of the study experiment showed that compost application of 10 kg/tree resulted in a pH of 6.3, CEC value of 27.14 cmol (+)/kg, organic-C content of 2.16%, available-P content of 18.1 ppm, K 0.46 cmol (+)/kg, Number of fruit/tree 9.67 (fruit), seeds/fruit 28.37 (seeds), Weight 100 dry seeds 113.17 (g), Dry seeds per tree 315.50 (g), Dry seeds per hectare 350.50 (kg/ha).
