PERTANIAN TROPIK
Vol. 13 No. 2 (2026): JURNAL ONLINE PERTANIAN TROPIK

Optimization of vermicompost utilization of soil worms (Lumbricus rubellus) on the morphology green spinach (Amaranthus sp.)

Nanda Agnes Santika (Institut Pertanian Bogor)
Vivi Indriani (Program Study of Animal Science, Faculty of Agriculture, Universitas Sumatera Utara)



Article Info

Publish Date
08 Oct 2025

Abstract

Vermicompost is a fertilizer produced by composting organic waste with the help of earthworms that can fertilize the soil. Vermicompost has the measure of being beneficial for plant growth. This study aims to determine the effectiveness of vermicompost levels of worms (Lumbricus rubellus) against green spinach plants. The experimental design used was a completely randomized design (CRD) with a factorial pattern (4x3). Factor A is the level of vermicompost (0%, 5%, 10%, and 15%) based on the media and factor B is inorganic fertilizer (0%, 50%, 100%) based on the recommendation each with 5 repetitions. The quality of vermicompost products from the earthworm L. rubellus derived from cow dung has met the quality standards of solid organic fertilizers. The optimum level for the growth of green spinach (Amaranthus sp) is a combination of 10% vermicompost and 50% inorganic fertilizer levels. The addition of vermicompost fertilizer to plant media was able to increase plant vegetative growth which included plant height, number of leaves, leaf area, stem diameter of green spinach (Amaranthus sp).

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Journal Info

Abbrev

jpt

Publisher

Subject

Agriculture, Biological Sciences & Forestry

Description

Tropical Agriculture Journal (JPT) is a peer-reviewed online journal of Agriculture Postgraduate Study Program Universitas Sumatera Utara (USU). Journal is a result of research, or scientific reviews of researchers, students and agricultural institutions, and others related to agricultural studies ...