PENDIPA Journal of Science Education, 2021: 5(3), 345-350 ISSN 2086-9363 https://ejournal.unib.ac.id/index.php/pendipa 345 Growth of Long Pepper (Piper rectofractum Vahl.) with Different Growing Media Composition Wuri Prameswari 1* , Welly Herman 2 , Umi Salamah 1 1 Agroecotechnoloy Study Program, Faculty of Agriulture, University of Bengkulu 2 Soil Science Study Program, Faculty of Agriculture, University of Bengkulu *Email: wprameswari@unib.ac.id DOI: https://doi.org/10.33369/pendipa.5.3.345-350 ABSTRACT Long pepper (Piper retrofractum Vahl.) is one of the potential medicinal plants in Indonesia. However, information related to the cultivation of this plant is scarce. Therefore, more research is necessary to determine the suitable planting media for the growth of long pepper. This experiment used a complete randomized group design with one treatment factor for the composition of the growing media, namely soil, soil + sand (3:1, v/v), soil + rice husk charcoal (3:1, v/v), and soil + manure (3:1, v / v). Each treatment repeats six times, and each consisted of 10 plants. Data processing was done using an analysis of variance. The plant material used was in soil tendrils and polybags measuring 30 cm x 30 cm as a container. NPK + Mg inorganic fertilizer with an equivalent dose of 12: 12: 17: 2. The results of the experiment showed that the composition of the different growing media affected all observed variables. The use of soil planting medium + cow manure showed the best growth results of long pepper for plant height, the number of leaves, root length, root and canopy wet weight, and root and canopy dry weight. Keywords: Piperaceae; rice husk; manure; medical plant; polybag. ABSTRAK Cabe jamu (Piper retrfractum Vahl.) merupakan salah satu tanaman obat potensial di Indonesia, akan tetapi informasi terkait budidaya tanaman ini masih sangat terbatas. Oleh karena itu diperlukan penelitian terkait penentuan media tanam yang sesuai untuk pertumbuhan tanaman cabe jamu. Percobaan ini menggunaka rancangan kelompok lengkap teracak (RKLT) dengan satu faktor perlakuan komposisi media tanam yaitu tanah, tanah+pasir (3:1, v/v), tanah+arang sekam padi (3:1, v/v), dan tanah+pupuk kandang sapi (3:1, v/v). Setiap perlakuan diulang 6 kali dan masing-masing terdiri atas 10 tanaman. Analisis data menggunakan sidik ragam. Bahan tanaman yang digunakan berupa stek sulur tanah dan polybag berukuran 30 cm x 30 cm sebagai wadah. Pupuk anorganik NPK+Mg dengan dosis setara 12:12:17:2. Hasil percobaan menunjukkan bahwa komposisi media tanam yang berbeda mempengaruhi semua variabel yang diamati. Penggunaan media tanam tanah+pupuk kandang sapi menunjukkan hasil pertumbuhan cabe jamu terbaik untuk variabel tinggi tanaman, jumlah daun, panjang akar, bobot basah akar dan tajuk serta bobot kering akar dan tajuk. Kata kunci: Piperaceae; arang sekam padi; pupuk kandang sapi; tanaman obat; polybag. INTRODUCTION Piper retrofractum Vahl. or often known as chilli herbs (long pepper), included in the Piperaceae family (Vasavirama and Upender, 2014) which is used as a cooking ingredient (Kartasapoetra, 2004), natural insecticides (Hasnah and Rusdy, 2015; Umami and Purwani, 2015), oral inflammation medicine, bronchitis (Evizal , 2013; Kemal et al., 2013), stomach cramps, asthma (Jamal et al., 2013), influenza (Chaveerach et al., 2006), cholesterol-lowering (Kim et al., 2011), the mother is giving birth (Vinay et al., 2012), as well as antioxidants and anticancer (Subramaniam et al., 2003; Mulia, 2015). Chilli jamu is an upright terrestrial plant similar to a pepper plant with branches reaching up to 0.5 m. Besides, this plant is a vine planted