Marulak Simarmata

Effects of Cocopeat–rice Husk Biochar Growing Media on Growth, Yield, Phenolic Content, and Nitrogen Uptake of Mint (Mentha spp.) under Drip Hydroponics

Mariana Makdalena, Nanik Setyowati, Marulak Simarmata, Yulian Yulian & Usman Siswanto · Asian Journal of Research in Crop Science · 2026

Mint (Mentha spp.) is a high-value medicinal and aromatic crop whose productivity and quality are influenced by growing media under hydroponic cultivation. This study evaluated the effects of cocopeat–rice husk biochar growing media on the growth, yield, phenolic content, and nit...

Open access Research Article 10.9734/ajrcs/2026/v11i3454

Effects of Madagascar Periwinkle Leaf Extract (Catharanthus roseus (L.) G.Don, Apocynaceae) on the Agromorphophysiological Characteristics of Dendrobium sp. during Acclimatization Phase

Lisa Regyna Ardianingrum, Marlin Marlin, Marulak Simarmata, Sigit Sudjatmiko & Reny Herawati · Asian Plant Research Journal · 2026

This study aimed to determine the effects of different concentrations of Catharanthus roseus leaf extract on the morphological characteristics of Dendrobium orchids. The research was conducted in the greenhouse of the Agronomy Laboratory, Faculty of Agriculture, University of Ben...

Open access Research Article 10.9734/aprj/2026/v14i4389

The Effect of Combination Liquid Organic Fertilizer and NPK Fertilizer on the Growth and Yield of Bawang Dayak (Eleutherine palmifolia (L.) Merr.)

Rangga Alqadri, Marlin Marlin, Masdar Masdar, Marulak Simarmata & Anita Hazimah Putri · Asian Journal of Agricultural and Horticultural Research · 2026

This study evaluated combinations of liquid organic fertiliser (LOF) and NPK 16:16:16 fertiliser for improving the growth and yield of bawang dayak (Eleutherine palmifolia (L.) Merr.) under lowland conditions in Bengkulu, Indonesia. The experiment was conducted from October 2025...

Open access Research Article 10.9734/ajahr/2026/v13i3487

The Effect of Growth and Yield of Edamame Soybeans Glycine max (L.) Merr at Different Planting Distances in Bengkulu City, Indonesia

Jeremia Sinaga, Uswatun Nurjanah, Hesti Pujiwati, Marulak Simarmata & Masdar · Asian Journal of Advances in Agricultural Research · 2026

Aims: This study aimed to determine the optimal planting distance for the growth and yield of edamame soybeans. Study Design: The experiment was arranged in a completely randomized block design (CRBD) with one factor consisting of five planting distances of 20 cm x 15 cm, 20 cm x...

Open access Research Article 10.9734/ajaar/2026/v26i1703