Effect of liquid organic fertilizer based on cocoa peel waste on white eggplant production (Solanum) melongena L.) in The Village Niko'otano Dao Gunungsitoli Alo'oa District

Authors

  • Kevin Ondoi Kenari Harefa Universitas Nias, Indonesia
  • Helmin Parida Zebua Universitas Nias, Indonesia
  • Dian Agung Sanora Laia Universitas Nias, Indonesia
  • Putra Hidayat Telaumbanua Universitas Nias, Indonesia

DOI:

https://doi.org/10.59651/cceria.v20i4.487

Keywords:

Cocoa Husk, Growth, Liquid Organic Fertilizer, Production, White Eggplant

Abstract

This study aims to determine the effect of liquid organic fertiliser (LOF) made from cocoa husk waste on the yield of white aubergine (Solanum melongena L.), and to evaluate the plants’ response. This study aimed to test various doses of organic cocoa powder and identify the dose that yielded the best results. The study was conducted in the village of Niko’otano Dao, Gunungsitoli Alo’oa Sub-district, Gunungsitoli City, using a quantitative field experiment with a non-factorial randomised block design (RBD). The study comprised four treatments: P0 (0 mL/L of water), P1 (100 mL/L of water), P2 (200 mL/L of water) and P3 (300 mL/L of water), each with three replicates. The cocoa powder was produced from cocoa husk waste through a fermentation process and subsequently tested in the laboratory. The parameters observed included plant height, number of fruits, and fruit weight. The data were analysed using analysis of variance (ANOVA) and followed by a 5% DMRT test to determine significant effects. The results showed that fertilisation with cocoa husk waste-based LOF had a positive effect on the growth and yield of white aubergines. Treatment P3 yielded the best results, with an average total of 4.33 fruits per plant and a fruit weight of 215.67 g per plant. Thus, the cocoa husk waste-based LOF at a dose of 300 ml/L of water was the most effective treatment for enhancing the growth and yield of white aubergines under the conditions of this study.

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Published

2026-10-26

How to Cite

Harefa, K. O. K., Zebua, H. P., Laia, D. A. S., & Telaumbanua, P. H. (2026). Effect of liquid organic fertilizer based on cocoa peel waste on white eggplant production (Solanum) melongena L.) in The Village Niko’otano Dao Gunungsitoli Alo’oa District. Contributions of Central Research Institute for Agriculture, 20(4), 293–298. https://doi.org/10.59651/cceria.v20i4.487